Midmark Gas Supply Systems Installation guide

Brand: Midmark

Model: Gas Supply Systems

Type: Installation guide

Matrx by Midmark

145 Mid County Drive

Orchard Park, New York 14127

800 MIDMARK [643-6275] (Customer Service)

888 279 1260 (Technical Service)

www.midmark.com

Part No. 10376600 Rev. E

FLO-SAFE

Manifold & Alarm System

Installation and Operation Manual

MX105300

Reference Only

1-800-Midmark

www.midmark.com

Style F

Doctor’s Operating Summary.................................... ii-iii

Safety Warning and Important Information .................. 1

Section 1 About FLO-SAFE ...................................... 2

1.1 Description

1.2 Models and Features

1.3 System Components

Section 2 Pre-Installation ...................................... 3-5

2.1 Kit Content

2.2 Installation of Manifold Mounting Plate

2.3 Installation of Zone Valve

2.4 Piping System Installation

2.5 Supply Circuit Connection

2.6 Low Voltage Signal Cable

Section 3 System Installation................................ 6-7

3.1 Wall Mounted Alarm

3.2 Desk Mounted Alarm

3.3 Control Module

3.4 Manifold

3.5 Cylinders and Regulators

Section 4 Zone Valve Installation and Testing .. 8-10

4.1 Zone Valve Pre-Installation

4.2 Manifold Switch Wiring

4.3 Zone Valve Switch Wiring

4.4 “Chained” Zone Valve

4.5 Pressure Switch Testing

4.6 Final Inspection

Section 5 FLO-SAFE Operation and Checkout 11-14

5.1 Activating the System

5.2 Deactivating the System

5.3 Changing Security Code

5.4 Alarm Features

5.5 Manifold Features

5.6 Control Module Features

Section 6 System Functional Testing............... 15-17

6.1 Test Setup

6.2 Cross Connection Test

6.3 Testing the Manifold Alarm

6.4 Replacing the Test Regulators

Section 7 Maintenance....................................... 18-20

7.1 Fuse Replacement

7.2 Adjusting Cylinder Regulators

7.3 Gas Cylinder Replacement

Section 8 Calibration and Troubleshooting ..... 21-23

8.1 FLO-SAFE Manifold Calibration

8.2 Problems and Solutions

8.3 Global Reset

8.4 Troubleshooting Tips

Section 9 Replacement Parts ................................. 24

Section 10 Service and Warranty............................. 24

TABLE OF CONTENTS

CONTENTS

Reference Only

Daily Startup

1. Open all four gas cylinder valves completely.

2. At the Alarm Panel, press the ON/OFF indicator.

3. The system is now operational unless your system

is a FS-1 or CFS-1 with the optional security

system. For these systems, the Alarm Panel

SECURITY indicator should light. Enter your code.

If indicator fails to light, call for service.

4. Press ON/OFF again. Your system is now

operational.

Daily Shutdown

1. At the Alarm Panel, press the ON/OFF indicator.

2. Close all four gas cylinders valves completely. The

system is now shut down.

3. Do not remove alarm or disconnect components

to shut down FLO-SAFE.

Operating Tips

1. Do not use the supply circuit breaker to control

operation of FLO-SAFE. Current draw is negligible

and a global reset (Section 8.3) must be performed

each time power is turned off (or interrupted).

2. It is a good practice to note the pressure readings

of both gauges at the Manifold after shutdown and

just before startup. If there is more than 5 psi

change in pressure, your system is leaking

excessively. Call your Matrx by Midmark dealer for

Service.

3. If you have forgotten or want to change your

security code, see Section 5.3 and 5.6 of this

manual.

4. FLO-SAFE provides: status information; audible

and visual alarms when gas pressure is high or

low; warnings when there is no reserve, and a

manual override to allow gas delivery during power

outages. These functions are illustrated from a

user’s prospective on the next page.

DOCTOR’S OPERATING SUMMARY

ALARM PANEL

STEP 2 CLOSE ALL FOUR GAS CYLINDER

VALVES COMPLETELY

STEP 1 PRESS ALARM PANEL

ON/OFF INDICATOR

MX105500

Startup

Shutdown

SUMMARY

STEP 3 FOR SYSTEMS WITH SECURITY,

ENTER YOUR CODE

STEP 2 PRESS ALARM PANEL ON/OFF

INDICATOR

STEP 4 FOR SYSTEMS WITH SECURITY,

PRESS ON/OFF AGAIN

MX105400

STEP 1 OPEN ALL FOUR GAS CYLINDER

VALVES COMPLETELY

ALARM PANEL

Reference Only

iii

Electrical power failure. To

continue operation, set the

Manifold selector knob so that

the pointer of the knob aligns

withe the triangular blue mark at

12 o’clock on the Manifold cover.

Gas will now flow to the operato-

ries. When power returns, press

the ON/OFF indicator on the

Alarm Panel to resume auto-

matic operation.

Alarm beeps continuously indicates high or low gas

pressure. When nitrous oxide or oxygen pressure at the

Manifold exceeds 65 psi or drops below 40 psi, the Alarm

Panel responds with an audible, repeating “beep” and

lights the appropriate HIGH or LOW indicator. Correcting

the problem causes the indicator to return to normal and

shuts off the beeper. To silence the beeper during

servicing, press the icon shown.

FLO-SAFE is not operating normally and the tank

gauges show adequate gas supplies (at least 200

psi). Check the SYSTEM STATUS indicator. When an

abnormal situation arises, the SYSTEM STATUS

indicator and one or more of the letters A, B, or C will

light. See Section 8, Troubleshooting, for a description

of each of the status condition codes e.g., A, AB, BC.

If calling for service, give your Matrx dealer (listed on

cover), the status code indicated.

When a NO RESERVE icon lights, a good practice is to

replace empty tank without delay to avoid an automatic

shutdown because of low gas pressure.

DOCTOR’S OPERATING SUMMARY

O NO RESERVE INDICATOR

NO RESERVE INDICATOR

MX105800

SYSTEM STATUS

INDICATOR

MX105800

NITROUS OXIDE

HIGH/LOW INDICATOR

TO SILENCE ALARM

BEEPER, PRESS HERE

OXYGEN HIGH/LOW

INDICATOR

MX105700

ON/OFF INDICATOR

MX105600

FOR MANUAL

OVERRIDE, SET

SELECTOR KNOB

TO 12 O’CLOCK

Reference Only

WARNING: READ AND UNDERSTAND THE FOLLOWING SAFETY INSTRUCTIONS

BEFORE ATTEMPTING TO INSTALL OR OPERATE THE FLO-SAFE MANIFOLD AND

ALARM SYSTEM. IF YOU DO NOT UNDERSTAND THESE INSTRUCTIONS, CONTACT

YOUR LOCAL MATRX BY MIDMARK DEALER.

SAFETY WARNINGS AND IMPORTANT INFORMATION

Installation and testing shall be done in accordance with NFPA or CSA standards. It is the responsibility of

the installer to ensure compliancy with the above standards as well as any local building or fire code.

1. DO NOT USE OIL, GREASE, OR ANY OTHER

PETROLEUM-BASED OR FLAMMABLE

SUBSTANCE ON OR AROUND OXYGEN

EQUIPMENT. Oil and grease become highly

combustible in the presence of oxygen. Oxygen

is not flammable by itself; however, all materials

which burin in air will burn much more rapidly in

the presence of oxygen.

2. DO NOT ALLOW OXYGEN OR NITROUS

OXIDE EQUIPMENT TO BECOME EXPOSED

TO FIRE, SPARKS, OR OTHER POSSIBLE

SOURCES OF IGNITION.

3. DO NOT USE THE REGULATOR IF OIL OR

GREASE IS PRESENT, OR IF DAMAGE IS

EVIDENT.

4. DO NOT SUBMERGE THE REGULATOR IN

WATER. Wipe Dusty parts with a damp cloth.

To disinfect the regulator, use isopropyl alcohol.

5. NEVER ALTER THE REGULATOR IN ANY WAY.

6. IF YOU HEAR A LOUD “HISSING” OR

“POPPING” SOUND COMING FROM THE

REGULATOR, CLOSE THE CYLINDER VALVE

OR GAS INLET AND CONTACT YOUR MATRX

BY MIDMARK DEALER. This regulator is

equipped with a relief valve; these sounds

indicate a possible malfunction and hazardous

condition.

7. INSPECT THE GAS CYLINDER VALVE FOR

LEAKS BEFORE PUTTING IT INTO SERVICE. If

a leak is found around the cylinder valve stem,

close the valve, place the cylinder outdoors in a

safe area, and inform your medical gas supplier

immediately.

8. DO NOT STORE CYLINDERS NEAR SOURCES

OF HEAT OR FLAME. Never allow the temperature

of the cylinder contents to exceed 125° F.

9. NO SMOKING. Remove matches, cigarettes,

lighters, and lighter fluids from the area.

10. SECURE TANKS with tank restraints.

11. KEEP ALL SUPPLY TANKS IN A LOCKED,

SECURED AREA.

12. NEVER LEAVE GAS CYLINDER VALVES OPEN

OVERNIGHT. Turn all cylinder valves clockwise at

the end of each day to shut off the gas supply.

13. WHEN OPENING A CYLINDER VALVE, ALWAYS

STAND SO THE CYLINDER VALVE IS BETWEEN

YOU AND THE REGULATOR. (Stand opposite the

supply line from the regulator to the Manifold).

NEVER STAND IN FRONT OF OR BEHIND A

REGULATOR when opening a cylinder valve.

INSTALLATION AND TESTING SAFETY

REGULATORY AND GAS CYLINDER SAFETY

Reference Only

ABOUT FLO-SAFE

SECTION 1.0

1.1 DESCRIPTION

The Matrx FLO-SAFE Manifold and Alarm System

provides safe delivery of nitrous oxide (N

0) and Oxygen

) from source tanks to the lines supplying patient

areas. The FLO-SAFE Manifold is designed for systems

using less than 3000 cubic feet (85 cu. m.) of gas.

1.2 MODELS AND FEATURES

The FLO-SAFE Manifold System is available in two

models:

1. FS-1 and CFS-1with security

2. FS-2 and CFS-2 without security

All models provide automatic switchover to the reserve

tank, audio/visual alarms, and a Proportional Fail-Safe

feature that stops nitrous oxide flow in the event oxygen

pressure drops so that nitrous oxide cannot be

administered without oxygen.

1.3 SYSTEM COMPONENTS (Figure 1)

The system consists of the FLO-SAFE Manifold, Alarm

Panel, Control Module, Service Isolation Valve, Zone

Valve Shutoff box and four Cylinder Regulators.

1. The wall-mounted Manifold connects to the gas

supply (nitrous oxide and oxygen). It contains

pressure sensors, pressure relief devices, pressure

gauges, a Proportional Fail-Safe system, an

automatic switchover mechanism and Control

Module.

2. The Control Module houses the control electronics

and power supply. It directs all major functions of

the system, including tank switchover, pressure

alarms and system status.

3. The Alarm Panel provides control and system status

monitoring, with audio and visual alarms to warn of

high and low gas pressures. Model FS-1 has a

security function that prevents unauthorized

operation of the system. The Alarm Panel can be

wall-mounted or optionally desk-mounted

(requires kit PN 91307605).

4. The Zone Valve provids emergency shutoff of

gases in the patient area. Surface and flush-

mounted versions are available. Both are supplied

with high/low pressure switch assemblies and a

single-handle shutoff.

5. The Service Isolation Valve provides a means to

disconnect the supply gas from the distribution

system. A single actuator controls both O

and N

valves. Includes a security device to allow locking

the valve open and closed.

NOTE: Zone Valve Shutoff Boxes are required

in some installations. Refer to NFPA and CSA

guidelines.

FIGURE 1. FLO-SAFE Manifold System with Optional Zone Valve

MX106000

FLOW

TO INDIVIDUAL

PATIENT ROOMS

PATIENT AREA

CONTROL

MODULE

REGULATOR

CYLINDER

VALVE KNOB

O REGULATOR

SECURE

AREA

MANIFOLD

ZONE VALVE

(OPTIONAL)

WALL PLATE

WALL-MOUNTED

ALARM PANEL

OPTIONAL

DESK-MOUNTED

ALARM PANEL

6’ CABLE

SUPPLIED

WALL PLATE

Reference Only

PRE-INSTALLATION

SECTION 2.0

2.1 KIT CONTAINS

The Canadian FLO-SAFE (CFS) Manifold System

Installation Kit is available in two different configurations

based on the zone valve mounting arrangement, being

recessed or surface mount. Installation kit with recessed

zone valve, p/n 91307612 consists of the following:

Description Part No. Qty.

Manifold Installation Kit (includes

mounting plate, 100’ of signal and

hardware package) 40116000 1

Service Isolation Valve 30111600 1

Zone Valve Shut-off Box (Recessed) 91305653 1

Switch Box 61943300 1

Switch Box Support 61943455 2

Bushing 62923803 1

2-20 Cable 61896300 1

Installation Kit, with surface mount zone valve, p/n

91307613 consists of the following:

Description Part No. Qty.

Manifold Installation Kit (includes

mounting plate, 100’ of signal and

hardware package) 40116000 1

Service Isolation Valve 30111600 1

Zone Valve Shut-off Box (Surface) 91305652 1

Switch Box 61943300 1

Switch Box Support 61943455 2

Bushing 62923803 1

2-20 Cable 61896300 1

FIGURE 2. Installation Options for Manifold Mounting Plate and Main Power Installation

2.2 INSTALLATION OF MANIFOLD MOUNTING

PLATE

See Figure 3 to select a location for the manifold

mounting plate. The location selected must be within 36

inches of the proposed location for the gas cylinders

because 36 inch lines are provided to connect the FLO-

SAFE Manifold to the cylinders. Mount the bottom edge

of mounting plate 5 feet above the floor.

NOTE: UP label indicates proper orientation

2.2.1 Drywall Mounting

1. Use the mounting plate as a template. Mark

locations of the four spacers on back of the four

spacers on back plate and the four corner holes.

2. Drill 1" diameter clearance holes through drywall

at each spacer location so mounting plate fits flush

to wall.

3. Drill ¼” holes at corner holes. Insert hollow wall

anchors in corner holes. Attach plate using anchors.

2.2.2 Wall Stud Mounting

1. Use mounting plate as template. Mark the upper

and lower rear spacer holes.

2. Attach mounting plate to stud using wood screws.

2.2.3 Crossmember Mounting

1. Use mounting plate as a template. Mark the left,

right and lower rear spacer holes.

2. Attach mounting plate using wood screws.

2.3 INSTALLATION OF THE ZONE VALVE

(Refer to Section 4 elsewhere in this manual)

MX104800i

DO NOT USE

KNOCKOUTS

ON SIDE OF

ELECTRICAL BOX

IEC

CORD

GAP

SIGNAL

CABLE

ACCESS

FOR WIRING ACCESS

LEAVE THIS AREA OPEN

8” MAXIMUM

LOCATE BOTTOM

EDGE 5’ FROM FLOOR

Mounting Plate Options:

For drywall or surface mounting,

use four corner holes.

For pre-drywall crossmember

mounting, use three holes shown.

For pre-drywall stud mounting, use

two holes shown.

Main Power Installation Options:

Electrical box may be accessed from:

Top knockout

Knockout on backside of plate

Reference Only

PRE-INSTALLATION

Figure 3 Installation Options for Manifold Mounting Plate and Main Power Installation

FLOW

MX104900i

2-20 CABLE

(6’ PROVIDED)

TRIPLE GANG

ELECTRICAL BOX FOR

ALTERNATE PRE-

DRYWALL INSTALLATION

(NOT PROVIDED)

MANIFOLD MOUNTING PLATE:

• LOCATE BOTTOM EDGE 5’ FROM FLOOR

• WITHIN 36” OF SUPPLY GAS REGULATOR

SURFACE MOUNTED

ZONE VALVE

RECESSED

ZONE VALVE

1 3/8”

TWO ZONE VALVE SHUTOFF SIGNAL

CABLE - 4 CONDUCTOR EACH

(100’ PROVIDED)

ALARM SIGNAL CABLE - 4 CONDUCTOR

(100’ PROVIDED)

115 VAC MAIN POWER WITH

DEDICATED CIRCUIT BREAKER

CONNECT WITH WIRE

CONNECTORS (SUPPLIED

WITH ALARM PANEL)

12 1/8”

R.O.

2 5/16”

WRAP WET RAGS

AROUND PIPING AT EACH

END WHEN BRAZING

ZONE VALVE

SHUTOFF BOX

IN PATIENT AREA

TO OUTLET

STATION

ISOLATION

VALVE

2” X 4”

1/2”

DRYWALL

Reference Only

PRE-INSTALLATION

2.4 PIPING SYSTEM INSTALLATION

Install piping system in accordance with local building

and fire codes. Depending on locality, adherence to

NFPA 99C or CSA 27396.1 is strongly recommended.

2.5 SUPPLY CIRCUIT CONNECTION

All electrical connections must be made to local codes

by a licensed electrician. A dedicated 15A, 115VAC, 14

All electrical connections must be made to local codes

by a licensed electrician. A dedicated 15A, 115VAC, 14

gauge supply circuit is required. This must be a

dedicated circuit due to the emergency system

requirements, rather than the amperage demands, of

the FLO-SAFE System. To install the supply line:

1. Feed dedicated branch circuit line to Manifold

Mounting Plate electrical box.

· For surface-mounted power line,

use knockout on top of box.

· For in-wall power line, use rear

center knockout.

Note: Do not use side knockouts on

electrical box.

2. Attach bushing of supplied Romex connector to

incoming cable. Insert connector through chosen

knockout and secure with connector locknut.

3. Connect supply hot line to black or brown wire using

wire connector provided.

4. Connect Supply neutral line to white or blue wire

using wire connector or provided.

5. Connect supply ground to ground post inside

electrical box. Attach ground of Manifold power cord

to same post using #6-32 nut provided.

6. Attach cover to box.

7. To facilitate future servicing, label dedicated

Manifold System supply circuit at service panel.

2.6 LOW VOLTAGE SIGNAL CABLE

Provided is 300’ of 4 conductor signal cable. Two equal

lengths run between the Manifold Mounting Plate and

Zone Valve Shutoff Box. A third length between the

Manifold mounting Plate and the Alarm panel (see figure

2). Also provided is a 6’ length of 2 conductor cable

which connects the alarm panel to the 90 dB remote

auditory alarm. Connection details found in the FLO-

SAFE Manifold & Alarm System Installation & Operation

Manual #10376600.

Reference Only

SYSTEM INSTALLATION

SECTION 3.0

Follow these instructions to complete system installation

only after the building trades have completed the

Pre-Installation procedures in Section 2.

3.1 WALL-MOUNTED ALARM (Figure 4)

1. Attach one end of 4" cord to connector on back of

Alarm Panel, then attach other end to connector on

Alarm Panel wall plate.

2. Insert tabs on back of Alarm Panel into slots on

Alarm Panel wall plate, then slide Alarm Panel down

into place.

3.2 DESK-MOUNTED ALARM (Figure 5)

Installation of the optional Desk-Mounted Alarm requires

kit PN 91307605

1. Remove backing from double-sided tape on support

wedges.

2. Slide metal tabs on back of Alarm Panel into slots in

support wedges. Place assembled Alarm Panel on

selected desk, making sure bottom edges of support

wedges rest on desk when Alarm Panel is upright.

3. Attach one end of 6’ cord (supplied with kit) to

connector on back of Alarm Panel, then attach other

end to connector on Alarm Panel wall plate.

3.3 CONTROL MODULE (Figure 6)

Now, install the Control Module on the Manifold

mounting plate and connect the Alarm wiring per the

following procedure while referring to Figure 6.

1. Place Control Module tabs over four studs on

Manifold mounting plate. Fasten with 6-32 nuts and

lock washers. Do not pinch power cord when

tightening.

2. At Control Module, remove 3" to 5" of gray outer

jacket from four-conductor alarm signal cable, then

strip ¼” insulation from the end of each wire.

3. Connect wires to terminal block, matching wire

colors to terminal block label, then tighten screws.

4. Insert Alarm terminal-block jack into Control Module

port (connector) marked ALARM.

3.4 MANIFOLD (Figure 6)

Now, install the Manifold in the Manifold mounting plate

and connect the wiring as detailed below.

1. Remove and discard retaining clips and cap plugs

from both gas line pigtail fittings on Manifold

mounting plate.

2. Place Manifold over 2 studs on Manifold mounting

plate and fasten 2" screws.

3. Connect Manifold DISS fittings to pigtails.

4. Insert jack of pre-wired 12-conductor cable from

Manifold into Control Module port (connector)

marked SWITCHES.

5. Insert jack of pre-wired six-conductor cable from

motor on Manifold into Control Module port marked

MOTOR.

6. Turn Manifold selector knob to 6 o’clock position.

7. Place cover on Manifold, gently spreading sides of

cover so as to clear locking tabs on sides of

Manifold mounting plate.

3.5 CYLINDERS AND REGULATORS

WARNING: Read and understand the page 1

safety instructions before attempting to

operate regulators. If you do not understand

these instructions, contact your Matrx by

Midmark dealer.

1. Mount tank restraints 40" from floor.

2. Secure tanks in tank restraints. Each cylinder

MUST be individually restrained.

3. Open and close each cylinder valve to purge foreign

materials. Contact your medical gas dealer for more

information.

FIGURE 4. Wall-Mounted Alarm Panel Installation

FIGURE 5. Desk-Mounted Alarm Panel Installation

6’ CORD

TAB

OPTIONAL

DESK-MOUNTED

ALARM PANEL

TO WALL PLATE INSTALLED 12”

MINIMUM ABOVE FLOORING

SUPPORT

WEDGES

SLOT

MX106200

4” CORD

TAB

WALL-MOUNTED

ALARM PANEL

WALLPLATE

SLOT

MX106100

Reference Only

SYSTEM INSTALLATION

FIGURE 6. Control Module and Manifold Installation

4. Mount a test regulator on one oxygen cylinder.

5. Mount a test regulator on one nitrous oxide cylinder

NOTE: Do not mount the preset regulators

supplied at this time.

6. Connect DISS oxygen and nitrous oxide flexible

hoses from test regulator outlets to Manifold inlets.

7. Install any optional Zone Valves required for the

system as discussed in Section 4. Perform the

installation checkout and operational feature

familiarization of Section 5.

8. Finally, functionally test system per Section 6

procedure. This test must be witnessed.

WARNING: After installation, the customer and

Matrx by Midmark dealer shall witness testing

of system for proper gas connections.

MX106200

MANIFOLD

MOUNTING

PLATE

LOCKING

TAB

12-CONDUCTOR

PRESSURE SWITCHES

JACK FROM MANIFOLD

TO CONTROL MODULE

“SWITCHED” PORT

6-CONDUCTOR MOTOR JACK

FROM MANIFOLD TO CONTROL

MODULE PORT LABELED “MOTOR”

IEC 320 POWER CORD

3’ TO 5”

1/4”

4-CONDUCTOR ALARM JACK

FROM ALARM PANEL TO CONTROL

MODULE PORT LABELED “ALARM”

(Installer Assembled)

MANIFOLD

COVER

MANIFOLD

CONTROL

MODULE

Reference Only

ZONE VALVE INSTALLATION AND TESTING

SECTION 4.0

4.1 ZONE VALVE PRE-INSTALLATION (Figure 3)

The Zone Valve Shutoff Box Kit includes the following

components:

• Shutoff Box assembly (with separately

packaged O

and N

O pressure

assemblies).................................... 1

• Bezel ............................................... 1

• Clear access panel.......................... 1

• Central supply label......................... 1

• Manual ............................................ 1

• Truss head screws #6 x ¼ .............. 4

• 100’ four-conductor alarm cable...... 2

NOTE: Do not install pressure switch

assemblies or open packages at this time.

Place packaged assemblies in Shutoff Box.

1. Feed two four-conductor signal cables from Zone

Valve Shutoff Box to Manifold mounting plate.

2. Feed both cables through plastic bushing at upper

right corner of Manifold mounting plate. Mark

both ends of each cable for proper identification.

3. Replace cardboard plaster shield in Zone Valve

Shutoff Box.

4.2 MANIFOLD SWITCH WIRING (Figure 7)

1. At the Manifold, remove shorting jumper assembly

from the terminal block labeled “Zone Valve.”

2. Remove 3" to 5" of gray outer jacket from both

four-conductor cables. Strip insulation back ¼”

on each wire.

3. Attach wires for Zone Valve to this terminal block,

jack, matching wire colors to colors on label

(see Figure 7). Tighten screws securely.

NOTE: If a Zone Valve Shutoff Box is not

installed, do not remove the shorting jumper

from terminal block.

4.3 ZONE VALVE SWITCH WIRING (Figure 8)

NOTE: The Zone Valve Shutoff box has three

wire routing holes. Three strain relief fittings

are provided with each Zone Valve in a 3" x 5"

plastic bag. Insert strain relief fittings into

holes before inserting cables.

1. At the Zone Valve, remove 8-10" of gray outer

jacket from both four-conductor cables and strip

insulation back 1/4" on each wire.

2. Remove foam packing from the pressure switch

assemblies.

3. Attach wires to terminal strips on pressure

switch assemblies, matching colors to wires on

each pressure switch (see figure 9). Tighten

terminal screws to fasten wires securely.

4. Insert oxygen pressure switch into lower section

of Zone Valve Shutoff Box.

5. Insert nitrous oxide pressure switch into upper

section of the Zone Valve Shutoff Box.

4.4 “CHAINED” ZONE VALVES (Figure 9)

1. For multiple Zone Valves, install wiring to first

Zone Valve as described in Section 4.2.

2. Run two additional four-conductor cables between

the two zone valves.

3. Remove jumpers from the second terminal strip on

both the oxygen and nitrous oxide pressure switch

assemblies.

4. Using the second pair of four-conductor cables,

attach wires to these terminal strips following the

same color code.

5. At the next Zone Valve Shutoff Box, attach four-

conductor cable wires to first terminal strips on the

oxygen and nitrous oxide pressure switch

assemblies.

6. If installing additional Zone Valves, repeat Steps 2-5.

NOTE: If “Chained” Zone Valves are not installed,

do not remove jumpers from second terminal

strip on pressure switch assemblies.

FIGURE 7. Zone Valve Terminal Block at Manifold

TWO 4-CONDUCTOR CABLES

SHORTING

JUMPER

ZONE VALVE

TERMINAL BLOCK

JACK

ZONE VALVE CONNECTOR FROM BACK

SHOWING WIRING COLOR CODE

MX105200

Reference Only

ZONE VALVE INSTALLATION AND TESTING

4.5 PRESSURE SWITCH TESTING

1. Test Set-Up. With the Zone Valve open and the

Manifold System turned on at the Alarm Panel (see

Section 5.4), slowly open all four cylinders, pressurizing

the system to the normal operating pressure. After

about 10 seconds, pull the Zone Valve handle to close

its two valves, isolating the Zone Valve pressure

switches from the Manifold pressure switches.

2. Low Pressure Alarm Test. To an outlet station,

connect a stem-indexed hose with a shutoff valve.

Slowly bleed down the pressure at the outlet station

until the LOW pressure visual (4, Figure 11) and

audio alarms activate. The Zone Valve gauge

pressure should be approximately 40 psi. Silence the

audio alarm (see section 5.4). Repeat for both gases.

NOTE: To perform the high pressure test, the

Zone Valve must be pressurized from the outlet

station side of the Zone Valve Box. To prevent

false alarms, make sure the Manifold side of

the Zone Valve remains pressurized at the

normal operating pressure. The Zone Valve

handle must remain closed.

3. High Pressure Alarm Test. To a controlled outlet

station, connect a stem-indexed hose with a test

regulator and cylinder capable of pressurizing the line

to 65 psi. Slowly increase pressure until the HIGH

pressure visual (4, Figure 11) and audio alarms,

activate. The Zone Valve gauge pressure should be

approximately 65 psi. Silence the audio alarm (see

section 6.4). Repeat for both gases. Slowly relieve

pressure in both lines.

4.6 FINAL INSTALLATION

1. Remove and discard the protective cover only

after the completion of wall plastering, painting,

tiling, and trim work. Be careful removing the

protective cover so that the plaster does not chip

away from the edge of the box.

2. Check that all wires are terminated, both pressure

switch assemblies are installed, and valves are open.

3. Remove the self-adhesive label from the plastic

bag in the box. Mark the area controlled on label.

4. Attach label to bezel (see figure 8).

5. Secure bezel to metal enclosure with screws

provided.

6. After pressure switch testing, remove packing from

cover and place cover in opening of bezel.

FIGURE 8. Zone Valve Final Installation and Wiring

MX107400

FLOW

NITROUS OXIDE SWITCH (BLUE)

GREEN

RED

TO GREEN

SWITCH

OXYGEN SWITCH (GREEN)

ATTACH

LABEL

COVER

BEZEL

MANIFOLD

LOW (N.O.)

HIGH (N.C.)

TO BLUE

SWITCH

TWO 4-CONDUCTOR

CABLES TO

CONTROL MODULE

ZONE VALVE

SHUTOFF BOX

WHITE

BLACK

LOW (N.O.) HIGH (N.C.)

OPERATORIES

Reference Only

ZONE VALVE INSTALLATION AND TESTING

FIGURE 11. “Chained” Zone Valve Installation

ZONE VALVE 1

REMOVE

JUMPERS

ZONE VALVE 2

WHITE

TO MANIFOLD

GREEN

BLUE NITROUS OXIDE

PRESSURE SWITCH

LOW (N.O.)

HIGH (N.C.)

BLACK

TO MANIFOLD

ZONE VALVE 1

RED

GREEN OXYGEN

PRESSURE SWITCH

HIGH (N.C.)

LOW (N.O.)

REMOVE

JUMPERS

BLACK

RED

BLUE NITROUS OXIDE

PRESSURE SWITCH

ZONE VALVE 2

GREEN OXYGEN

PRESSURE SWITCH

LOW (N.O.)

HIGH (N.C.)

LOW (N.O.)

HIGH (N.C.)

BLACK

RED

MX106400

GREEN

WHITE

GREEN

WHITE

Reference Only

FLO-SAFE OPERATION AND CHECKOUT

SECTION 5.0

The FLO-SAFE Manifold with Security and without

Security are operated using controls on the Alarm Panel

and Control Module. The Alarm Panel and the Control

Module are touch panels. To operate, touch the graphics

or icon on the panel that depicts the desired function.

(For examples, see Figure 10) In the detailed operating

procedures that follow, the numbers in parentheses

following the names of indicators are “find” numbers that

are keyed to the referenced illustration.

5.1 ACTIVATING THE SYSTEM (Figure 11 to 13)

1. Turn on main power at the circuit breaker.

2. At the Manifold, turn the selector knob (Figure 14)

to 6 o’clock.

3. Open the cylinder valves.

4. Insert power cord into right side of Control Module.

The POWER ON indicator (Figure 12) should light.

FIGURE 12. Quick Operating Guide

STARTING FLO-SAFE (5.1)

ALARM

WITH SECURITY

ALARM

WITHOUT SECURITY

DEACTIVATING FLO-SAFE (5.2)

STEP 2

GAS INDICATORS

GO OFF

STEP 1

TOGGLE

ON/OFF TO OFF

STEP 3

MANUALLY CLOSE

GAS VALVE

STEP 10

INDICATES

GASSES

ACTIVATED

STEP 11

TANK IN USE

INDICATOR

LIGHT

STEP 9

PRESS

ON/OFF

STEP 6

SECURITY

LIGHTS

STEP 7

ENTER

SECURITY

CODE

STEP 5

PRESS ON/OFF

STEP 8

PRESS ON/OFF AGAIN

STEP 2

SET SELECTOR

KNOB TO 6 O’CLOCK

MX106500

Reference Only

FLO-SAFE OPERATION AND CHECKOUT

3. After the test sequence, the SECURITY (2) indicator

will illuminate.

4. Enter a new security code of up to four digits using

the Code Control (3) buttons.

5. Press the ON/OFF (1) button again.

6. The system will save the new code, then deactivate.

To reactivate the system using the new code, follow

Section 5.1.

NOTE: Allow 20 seconds for processing and

storing after entering a new code before

reactivating FLO-SAFE with the new code.

5.4 ALARM FEATURES (Figure 11)

1. ON/OFF: FLO-SAFE’s primary ON/OFF control.

Press this touch button to turn the system on or off.

2. SECURITY: This icon illuminates to indicate that

thecode must now be entered to complete

activation. To change the code, see Section 5.3.

3. CODE CONTROL BUTTONS 1, 2, 3: These

buttons are used to enter the selected security

code or factory default code (1) to complete

activation of the unit.

4. HIGH/LOW PRESSURE INDICATORS: When

nitrousoxide or oxygen pressure at the Manifold

exceeds 65 psi or drops below 40 psi, Alarm

sounds an audible, repeating “beep” and illuminates

the appropriate HIGH or LOW indicator. Correcting

the problem causes the indicator to return to

NORM, automatically silencing the beeper.

5. TEST/SILENCE ICON: During an alarm, press this

icon to silence the alarm beeper. If no alarm is in

progress, pressing this icon starts the test sequence,

which consists of a single response beep and the

illumination of each indicator in the following

sequence: LOW, NORM, HIGH, NO RESERVE,

SYSTEM STATUS, A, B, C, and SECURITY. The

Alarm Panel performs a self-test whenever activated.

Test each day before beginning use. If the test

sequence is not normal, call for service.

6. NO RESERVE: When either of there icons

illuminates, the reserve gas supply is exhausted.

The upper icon indicates reserve status of the nitrous

oxide supply; the lower icon is the oxygen reserve.

7. SYSTEM STATUS INDICATORS: If an

abnormal situation arises, the SYSTEM STATUS

indicator (7) and one or more of the letters A, B,

or C will illuminate. See Section 8, Troubleshooting,

for description.

Alarm with Security (Figure 13)

5. At the Alarm Panel, press the ON/OFF (1) control.

Note: An audible “beep” occurs each

time on Alarm Panel button is pressed.

6. The SECURITY (2) indicator will illuminate to

indicate a security code must be entered.

7. Enter the security code using the Code Control (3)

buttons. (See section 5.3 to change the code, or

Section 5.6 if you have forgotten the code.)

8. Press the ON/OFF (1) control again.

A) If the security code is correct, SECURITY (2)

indicator goes off, and both the NITROUS OXIDE

and OXYGEN pressure indicators (4) will illuminate,

indicating that the Manifold is supplying gas to the

patient area.

B) If the SECURITY indicator (2) remains

illuminated, the code was incorrect. Re-enter code.

9. When powering up the system for the first time, you

must do a global reset as detailed in Section 8.3

CAUTION: FLO-SAFE will not operate properly

unless a global reset is done when the unit is

first powered up and after correction of main

power problem such as a blown fuse.

Alarm without Security (Figure 11)

10.Press the ON/OFF (1) button. The NITROUS OXIDE

and OXYGEN pressure indicators (4) will illuminate.

11. At the manifold, the appropriate SELECTED (in

use) tank indicator arrows (3 & 7, Figure 13) will

illuminate to show which tanks have been selected.

5.2 DEACTIVATING THE SYSTEM

1. At the Alarm Panel, press the ON/OFF (1) button.

2. The NITROUS OXIDE and OXYGEN pressure

indicators (4) will go ofF (extinguish), indicating

that the Manifold is no longer supplying gas.

3. At the Manifold, close all the cylinder valves by

turning clockwise until completely closed.

5.3 CHANGING SECURITY CODE (Figure 11)

1. Activate FLO-SAFE at the Alarm Panel by pressing

ON/OFF button (1). Press and hold Alarm Test/

Silence button (5).

2. Press and release the ON/OFF (1) button. Release

the Test/Silence control (5) button.

Reference Only

FLO-SAFE OPERATION AND CHECKOUT

5.5 MANIFOLD FEATURES (Figure 12)

1. PROPORTIONAL FAIL-SAFE: A safety feature,

the Proportional Fail-Safe assures that nitrous oxide

line pressure never exceeds that of oxygen.

2. PRESSURE GAUGES: Gauges for nitrous oxide

and oxygen indicate the pressure of the pipeline in

pounds per square inch (psi).

3. MANUAL OVERRIDE: Overrides automatic tank

selection function of the Manifold. In the event of a

power failure or other unusual condition, it permits

gas flow to the patient area. Manually turn the

selector knob to the 12 o’clock position and align

the pointer with the blue mark on the Manifold cover

to select all four tanks simultaneously. Use this

function only when necessary, as it can compromise

reserve tank(s) integrity.

NOTE: During periods of extremely high gas

usage, such as normal usage combined with

oxygen flushes, a Low Pressure alarm may

activate due to a brief system pressure drop.

The FLO-SAFE Manifold has a built-in ten

second delay to help avoid erroneous tank

switchovers during such conditions.

The selector switch used to operate manually (12

o’clock) or automatically (6 o’clock) is a six-position

switch. Figure 12 shows the tank open/closed

configuration in the other switch positions.

FIGURE 11. Alarm Panel Controls

FIGURE 12. Manifold Controls and Indicators

(4) PRESSURE

INDICATOR

(6) NO RESERVE

INDICATOR

(7) SYSTEM

STATUS

INDICATOR

(3) CODE

CONTROL

(5) TEST

SILENCE

CONTROL

(2) SECURITY

INDICATOR

(1) ON/OFF

CONTROL

MX106600

CONTROL MODULE

SELECTOR KNOB

GAUGE

O GAUGE

MX106700

Reference Only

FLO-SAFE OPERATION AND CHECKOUT

5.6 CONTROL MODULE FEATURES (Figure 13)

1. Code Reset: If the security code is forgotten, the

unit can be reprogrammed to the factory code, which

is 1, by depressing the Code Reset button (1) on the

Manifold. Carefully insert a thin pen or tool into the

hole just above the words MANUAL OVERRIDE and

gently depress the button. Code Reset must also be

depressed simultaneously with both Service buttons

to perform a global reset.

2 & 6. SERVICE Buttons: Two buttons, labeled PRESS

AFTER REPLACING N

O TANK and PRESS

AFTER REPLACING O

TANK, are the Service

buttons. To test all indicators for either gas, hold the

button down. All the indicators will illuminate

simultaneously. Releasing the button clears the

EMPTY indicators for that gas. To reset the Manifold

after using the Manual Override feature, press both

buttons simultaneously. The Service buttons (and the

Code Reset button (1)) are also used to globally

reset the FLO-SAFE computer. A global reset is

required at initial start-up, before calibration and

whenever electrical power is interrupted.

3 & 7. TANK Indicators: There are two indicators for

each tank. SELECTED indicates which tank is in

use; EMPTY indicates which tank is considered

empty by the Manifold. The NO RESERVE indicator

on the Alarm will illuminate when the EMPTY

indicator is illuminated at the Manifold. A tank is

considered empty when the Manifold senses low

pressure for 10 seconds while that tank is selected.

If low pressure exists when the system is activated,

a two-minute delay occurs before the EMPTY

indicator illuminates to allow the user to open the

cylinder valve and/or allow the system to fill with gas,

thus avoiding a false EMPTY reading.

4. POWER ON Indicator: Lights when main power is

applied.

5. MANUAL OVERRIDE Indicator: Illuminates at the

Manifold when the selector knob is aligned with the

blue mark at 12 o’clock on the Manifold cover. The

PRESSURE indicators and NO RESERVE indicators

will illuminate at the Alarm Panel, according to the

gas pressure. To resume automatic operation, press

both Service buttons on the Manifold Control Panel

or the ON/OFF button on the Alarm.

8. SYSTEM STATUS Indicators: If an abnormal

situation arises, the SYSTEM STATUS indicator and

one or more of the letters A, B or C will illuminate.

See Section 8, Troubleshooting, for code

descriptions.

9. PRESSURE Indicators: These four indicators are

hard wired to the pressure switches and illuminate if

there is a break anywhere in the switch circuit. They

are visible only with the Manifold cover removed.

Power Supply with Fuse: The power supply and main

connector with a replaceable fuse are enclosed in

the Control Module. See Section 7.1 for fuse

replacement instructions.

FIGURE 13. Control Module Controls and Indicators

MX106800

(8) SYSTEM STATUS

INDICATOR

(4) POWER ON

INDICATOR

(9) PRESSURE

SWITCH INDICATORS

(7) NITROUS

OXIDE

TANK

INDICATOR

(6) NITROUS OXIDE

RESET BUTTON

(5) MANUAL

OVERRIDE INDICATOR

(1) CODE

RESET BUTTON

(2) OXYGEN

SERVICE BUTTON

(3) OXYGEN

TANK

INDICATOR

Reference Only

SYSTEM FUNCTIONAL TESTING

SECTION 6.0

NOTE: The National Fire Protection Association

(NFPA) requires a 24 hour standing pressure

leak test at 55 psi with the intended use gases.

Refer to NFPA 99, 1996 Edition, Section

4-5.4.1.3 Check your local inspection

requirements before testing.

NOTE: Use test regulators for the following tests.

Do not use the preset regulators supplied.

NOTE: If installing a Zone Valve Shutoff

assembly, see Section 5.0 before performing

the tests in Section 4.0.

WARNING: Always hold free end of hose.

“Hose whip” may cause serious injury.

6.1 TEST SETUP (Figure 14)

1. Remove Manifold cover.

2. Turn selector knob to 12 o’clock position.

3. Make sure Zone Valve is open (if installed).

4. Slowly and carefully turn oxygen cylinder valve

counterclockwise until you hear oxygen begin to flow

into test regulator. Wait about 10 seconds, then open

cylinder valve fully. Repeat for nitrous oxide cylinder.

WARNING: When opening a cylinder valve,

never stand in front of or behind a regulator.

(Stand opposite the line from the regulator to

the Manifold). Always stand so the cylinder

valve is between you and the regulator.

Always open the cylinder valve slowly.

5. Adjust both test regulators to 55 psi.

6. Check for obvious leaks throughout the entire

piping system.

7. Turn selector knob to 6 o’clock position.

8. Turn the Manifold Alarm ON at the Alarm Panel.

There should be no alarms at the normal

operating pressure.

9. The system is now ready for testing.

FIGURE 14. Setup and Function Test

MX106900

STEP 1

REMOVE

MANIFOLD COVER

STEP 8

TURN ALARM ON

PRESS TO

SILENCE

ALARM

STEP 7

SET SELECTOR

TO 6 O’CLOCK

STEP 4

OPEN

CYLINDER VALVE

STEP 4

OPEN

CYLINDER VALVE

STEP 2

SET SELECTOR

TO 12 O’CLOCK

MANIFOLD

Reference Only

SYSTEM FUNCTIONAL TESTING

6.2 CROSS CONNECTION TEST

When system installation is complete (FLO-SAFE

Manifold and Alarm and all piping and outlet stations to

the operatories installed and leak tested), a cross

connection test shall be run and witnessed by the

customer and/or Matrx dealer. The procedure that

follows assures that gas lines have not been crossed

during installation. These tests must be conducted

before clinical used of the system.

1. Exhaust gas from the entire Manifold system by

sequentially connecting an indexed hose to each

outlet station.

2. Test the oxygen circuit. Open all oxygen cylinder

valves; close all nitrous oxide cylinder valves.

3. Turn ON FLO-SAFE at the Alarm Panel. Silence

the alarm by depressing the alarm silence icon on

the Alarm Panel (see Figure 14).

4. Exhaust all nitrous oxide gas from the entire system

by sequentially connecting an indexed gas hose to

each nitrous oxide outlet station.

5. Verify the following:

· All gas cylinders are individually restrained

to the wall.

· Manifold oxygen gauge reads 50 to 55 psi.

· Manifold nitrous oxide gauge reads 0 psi.

6. Test for crossed gas lines by connecting an indexed

gas hose to each outlet station in all areas and

verifying that:

· There is no oxygen flow at each O

outlet

station.

· There is no nitrous oxide flow at each

O outlet station.

7. This completes the oxygen portion of the crossed

lines test. Exhaust all gas from the entire Manifold

system sequentially connecting an indexed hose to

each outlet station.

8. Next, test the nitrous oxide circuit. Open all nitrous

oxide cylinder valves; close all oxygen cylinder

valves.

9. Turn ON FLO-SAFE at the Alarm Panel. Silence the

alarm by depressing the alarm silence icon on the

Alarm Panel (see Figure 14).

10.Exhaust all oxygen from the entire system by

sequentially connecting an indexed gas hose to

each oxygen outlet station.

11. Verify the following:

· All gas cylinders are individually restrained

to the wall.

· Manifold nitrous oxide gauge reads

50 to 55 psi.

· Manifold oxygen gauge reads 0 psi.

12.Test for crossed gas lines by connecting an

indexed gas hose to each outlet station in all

areas and verifying that:

· There is nitrous oxide flow at each N

outlet station.

· There is no oxygen flow at each O

outlet station.

13.This completes the crossed lines test. Exhaust all

gas from the entire Manifold system by sequentially

connecting an indexed hose to each outlet station.

6.2 TESTING THE MANIFOLD ALARMS

NOTE: Due to the proportional Fail-Safe

feature, the following order of alarm testing

must be followed:

1. Oxygen High Alarm

2. Nitrous Oxide High Alarm

3. Nitrous Oxide Low Alarm

4. Oxygen Low Alarm

WARNING: During high pressure alarm testing

do not pressurize the system higher

than the high pressure switch point (65 psi).

Manifold pressure should never exceed 72 psi.

1. Test the Oxygen High Alarm.

Using the oxygen cylinder test regulator, slowly

increase the oxygen pressure to the Manifold until

the oxygen high pressure visual and audio alarms

activate. The pressure reading on the Manifold

oxygen pressure gauge should be approximately

65 psi. Silence the audio alarm at the Alarm Panel

(see Figure 14).

2. Test the Nitrous Oxide High Alarm

Keep the oxygen pressure at is high alarm set point

from the preceding step. Using the nitrous oxide

cylinder test regulator, slowly increase the nitrous

oxide pressure until the nitrous oxide high pressure

visual and audio alarms activate. The pressure

reading on the Manifold nitrous oxide pressure

gauge should be approximately 65 psi. Silence the

audio alarm at the Alarm Panel (see Figure 14).

Reference Only

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Midmark Gas Supply Systems Installation guide

Midmark Gas Supply Systems Installation guide

Midmark Gas Supply Systems Installation guide

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