Midmark POWERMAX Wiring diagram

FOR USE BY MIDMARK TRAINED TECHNICIANS ONLY

Service and

Parts Manual

SF-1920 Part No. 10559400 Rev AA4 (10/25/19)

PowerMax

PM-1

PM-3

PM-4

Model Numbers:

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Style B

* Indicates multiple pages due to model / serial number break(s)

Table Of Contents

GENERAL INFORMATION

Symbols .................................... iii

Ordering Parts .......................... iii

Serial Number Location ........... iii

Specifications ........................... iv

Model Identification /

Compliance Charts .................. v

Warranty Information............... vi

OPERATION &

TROUBLESHOOTING

Theory of Operation.................... A-2

COMPONENT TESTING

Pump Filters .................................. B-2

Check for Leaks ............................ B-3

Vacuum Switch ............................. B-4

Exhaust Mufflers ........................... B-9

Check Valve ................................... B-10

Low Voltage ................................... B-12

Fuse ................................................ B-14

On/Off Switch ............................... B-16

ACCESS PROCEDURES

Vacuum Switch Cover ................C-2

Electrical Box Cover ...................C-3

WIRING DIAGRAMS

PowerMax Models

PM-1 .............................................. D-2*

PM-3 .............................................. D-3*

PM-4 .............................................. D-4*

EXPLODED VIEWS / PARTS LISTS

PowerMax Models

PM-1, PM-3, PM-4 ..................E-2

General

Information

Section C

Section D

Section E

Section A

Section B

Rev 7/14/17

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iii

General Information

AA215700

Symbols

In Section A, test the components in the order indicated.

(ex.

1st

then,

2nd

)

Refer to Section B for component testing procedures.

The symbols below may be used in this manual to represent

the operational status of table functions and components.

Indicates the function / component is working properly.

No action required.

Indicates the function / component is working,

but a problem exists.

Indicates the function / component is not working at all.

Ordering Parts

The following information is required when ordering parts:

• Serial number & model number

• Part number for desired part.

[Refer to Exploded Views / Parts Lists section]

Non-warranty parts orders may be faxed to Midmark using

the Fax Order Form in the back of this manual.

For warranty parts orders, call Midmark's Service

Department with the required information.

Customer Service: 1-800-643-6275

Technical Service: 1-888-279-1260

33

3

33

3

General Information

33

3

Equipment Alert

Indicates a potentially hazardous situation

which could result in equipment damage if not avoided.

DANGER

Indicates an imminently hazardous situation which

will result in serious or fatal injury if not avoided. This

symbol is used only in the most extreme conditions.

WARNING

Indicates a potentially hazardous situation which

could result in serious injury if not avoided.

CAUTION

Indicates a potentially hazardous situation which may

result in minor or moderate injury if not avoided. It may also be

used to alert against unsafe practices.

Serial / Model

Number Location

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iv

General Information

PowerMax Surgical Suction Systems

Weights, Dimensions, Electrical Specifications

www.Midmark.com • 1-800-Midmark • www.Documark.com

AA214000

Model Users

Height

(IN.)

Width

(IN.)

Depth

(IN.)

Weight

(LBS.)

HP

Voltage

(50/60 Hertz)

Breaker

Size per

Pump

(Amps)

Tank

Capacity

(GAL)

CFM

Maximum

PM-1 1 31" 32" 25" 150 3/4 208-230 @ 5.1 Amp 20 20 8

PM-3 2-3 31" 32" 25" 210 1.5 208-230 @ 9.7 Amp 20 20 16

PM-4 3-4 34" 38" 27" 290 2.25 208-230 @ 14.3 Amp 20 32 24

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v

General Information

Model Identification / Compliance Chart

UL 60601-1

CAN

#601.1-M90

VAC Amps Cycles (Hz)

PM-4

PowerMax Surgical Suction System 3

4 User

Complies To:

Electrical Supply

Requirements:

Model

Description

PM-1

PowerMax Surgical Suction System 2

3 User

PM-3

X

PowerMax Surgical Suction System 1

User

Configurable

X

Configurable

X

50/60

5.1

208 / 230

208-230

13.8

50/60

208 / 230

9.7

50/60

Configurable

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vi

General Information

Limited Warranty Information

SCOPE OF WARRANTY

Midmark Corporation (“Midmark”) warrants to the original purchaser its new PowerMax products and components (except for components not warranted

under “Exclusions”) manufactured by Midmark to be free from defects in material and workmanship under normal use and service. Midmark’s obligation

under this warranty is limited to the repair or replacement, at Midmark’s option, of the parts or the products the defects of which are reported to Midmark

within the applicable warranty period and which, upon examination by Midmark, prove to be defective.

APPLICABLE WARRANTY PERIODAPPLICABLE WARRANTY PERIOD

The applicable warranty period, measured from the date of installation for the original user, shall be:The applicable warranty period, measured from the

date of installation for the original user, shall be:

• PowerMax Surgical Suction Vacuums: Two (2) years or 1,500 usage hours (whichever comes first)

EXCLUSIONS

This warranty does not cover and Midmark shall not be liable for the following: (1) repairs and replacements because of misuse, abuse, negligence,

alteration, accident, freight damage, or tampering; (2) products which are not installed, used, and properly cleaned as required in the Midmark

“Installation” manual and or “maintenance” guide for this applicable product; (3) products considered to be of a consumable nature; (4) accessories or

parts not manufactured by Midmark; (5) charges by anyone for adjustments, repairs, replacement parts, installation, or other work performed upon or in

connection with such products which is not expressly authorized in writing in advance by Midmark.This warranty does not cover and Midmark shall not

be liable for the following: (1) repairs and replacements because of misuse, abuse, negligence, alteration, accident, freight damage, or tampering; (2)

products which are not installed, used, and properly cleaned as required in the Midmark Installation manual and or maintenance guide for this

applicable product; (3) products considered to be of a consumable nature; (4) accessories or parts not manufactured by Midmark; (5) charges by anyone

for adjustments, repairs, replacement parts, installation, or other work performed upon or in connection with such products which is not expressly

authorized in writing in advance by Midmark.

EXCLUSIVE REMEDY

Midmark’s only obligation under this warranty is the repair or replacement of defective parts. Midmark shall not be liable for any direct, special, indirect,

incidental, exemplary, or consequential damages or delay, including, but not limited to, damages for loss of profits or loss of use.Midmark’s only

obligation under this warranty is the repair or replacement of defective parts. Midmark shall not be liable for any direct, special, indirect, incidental,

exemplary, or consequential damages or delay, including, but not limited to, damages for loss of profits or loss of use.

NO AUTHORIZATION

No person or firm is authorized to create for Midmark any other obligation or liability in connection with the products.No person or firm is authorized to

create for Midmark any other obligation or liability in connection with the products.

THIS WARRANTY IS MIDMARK’S ONLY WARRANTY AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSOR IMPLIED. MIDMARK MAKES NO IMPLIED

WARRANTIES OF ANY KIND INCLUDING ANY WARRANTIES OF MERCHANTABILTY OR FITNESS FOR ANY PARTICULAR PURPOSE. THIS WARRANTY IS

LIMITED TO THE REPAIR OR REPLACEMENT OF DEFECTIVE PARTS.THIS WARRANTY IS MIDMARK’S ONLY WARRANTY AND IS IN LIEU OF ALL OTHER

WARRANTIES, EXPRESSOR IMPLIED. MIDMARK MAKES NO IMPLIED WARRANTIES OF ANY KIND INCLUDING ANY WARRANTIES OF MERCHANTABILTY

OR FITNESS FOR ANY PARTICULAR PURPOSE. THIS WARRANTY IS LIMITED TO THE REPAIR OR REPLACEMENT OF DEFECTIVE PARTS.

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Troubleshooting

Section A

A-1

Troubleshooting

Section A

Function / System Page

Theory of Operation .............................. A-2

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A-2

Troubleshooting

Models:

Serial Numbers:

All

Theory of Operation

Troubleshooting Page

Low Suction in Operatories ................... A-3

High Vacuum Level ............................... A-4

Pump - Motor Overheats ....................... A-5

Cycles with No Vacuum Being Used ..... A-6

Runs with No Suction at Operatory ....... A-7

Will Not Run .......................................... A-8

Theory of Operation

Air is drawn from the operatories through

a Surgical Operatory Recover Room

Package to an ASME-certified reservoir

and then into the pump inlets. Rapidly

rotating vanes propel the air to the

discharge of the pump, producing vacuum

levels in the range of 13-20 inches of

mercury ("Hg).

Vacuum level is adjustable by adjusting

the pump "on-off" points at the vacuum

switch. A vacuum gauge provides moni-

toring of vacuum level.

A low voltage relay allows "on-off" opera-

tion of the PowerMax from a remote unit

in the operatories.

Single pump unit supply a maximum flow

rate of 8 cubic feet per minute (cfm); dual

pump units deliver 16 cfm while triple

pump units provide 24 cfm.

CAUTION

Motors are thermally protected

and will have line voltage applied to them

when the tank vacuum level is below the

minimum setpoint, either could cause the

system to restart without warning.

Pump exhaust can cause eye or skin

damage. Keep air stream airways from

face and hands.

Equipment Alert

PowerMax units use rotary

vane vacuum pumps that require no

lubrication. Service life of carbon

vanes will be reduced by petroleum

products. Verify all local codes.

Vacuum Storage Tank

AA214100

Vacuum

Switch

Low

Voltage

Control

Vacuum Line From

Operatories

L1

L2

Incoming Power

From Dedicated

20A Circuit

Electrical Box

Switch 1

Switch 3

Switch 2

Check

Valve

Check

Valve

Check

Valve

Pump 1

Pump 3Pump 2

Optional Exhaust Kit

Vent To

Outside

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A-3

Troubleshooting

Models:

Serial Numbers:

Vacuum System

Problem: Low Suction in Operatories

Refer To: Page

Pump Filters ......................................... B-2

Check for Leaks .................................... B-3

Vacuum Switch ..................................... B-4

All

Vacuum System

Flush Vacuum Pump

Order Midmark Flushing Solvent, 77000699.

Flushing instructions are included with solvent.

3rd

33

3

Replace Pump Filters

Refer to: Section B Pump Filters

33

3

1st

Replace Vanes

Pump vanes are worn and need replaced.

Replacement instructions are included with the vanes.

33

3

4th

Adjust Vacuum Switch

Refer to: Section B Vacuum Switch

5th

33

3

Replace Collection Canister

Canister in operatory is full.

6th

33

3

Check Vacuum Lines

Refer to: Section B Check for Leaks

Repair any damaged or collapsed vacuum lines.

33

3

2nd

AA217600

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A-4

Troubleshooting

Models:

Serial Numbers:

Refer To: Page

Pump Filters ......................................... B-2

Vacuum Switch ..................................... B-4

All

Vacuum System

Problem: High Vacuum Level

Replace Pump Filters

Refer to: Section B Pump Filters

33

3

1st

Adjust Vacuum Switch

Refer to: Section B Vacuum Switch

3rd

33

3

AA217900

Check Vacuum Lines

Repair any damaged or collapsed vacuum lines.

2nd

33

3

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A-5

Troubleshooting

Models:

Serial Numbers:

Vacuum System

Problem: Pump / Motor Overheats

(Operating Temperature Measured at Pump Exhaust is 180° or Higher)

Refer To: Page

Pump Filters ......................................... B-2

Exploded Views and Part Numbers ....... E-1

All

Vacuum System

Replace Pump Filters

Refer to: Section B Pump Filters

33

3

1st

Check Vacuum Lines

Repair any plugged, damaged or collapesed vacuum lines.

33

3

2nd

Flush Vacuum Pump

Order Midmark Flushing Solvent, 77000699.

Flushing instructions are included with solvent.

4th

33

3

Replace Vanes

Pump vanes are worn and need replaced.

Replacement instructions are included with the vanes.

33

3

5th

Check Equipment Room Temperature.

Temperature should be -40°to 104° Fahrenheit

-4 to 37 Celsius

6th

33

3

Clean Vacuum / Motor Vents

7th

33

3

Listen for Noise in Motor

If noises are heard from the motor, bearings

are defective. Replace motor/pump.

8th

33

3

WARNING

Pump Motors are thermally protected with an

automatic reset and may start without warning.

Check Exhaust Mufflers and Piping

Clean exhaust mufflers with a rag.

Check exhaust piping for damaged or collapsed pipes.

33

3

3rd

AA218000

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A-6

Troubleshooting

Models:

Serial Numbers:

Refer To: Page

Check Valve ......................................... B-8

Check for Leaks .................................... B-3

All

Vacuum System

Problem: Cycles with No Vacuum Being Used

Clean or Replace Check Valve

Refer to: Section B Check Valve

33

3

1st

Check for Leak in PowerMax or Piping System

Refer to: Section B Check for Leaks

33

3

2nd

AA218100

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A-7

Troubleshooting

Models:

Serial Numbers:

Vacuum System

Problem: Runs with No Suction at Operatory

All

Vacuum System

Check Vacuum Lines

Repair any damaged or collapsed vacuum lines.

Verify Inlet Ball Valve is Opened

33

3

1st

33

3

2nd

AA218200

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A-8

Troubleshooting

Models:

Serial Numbers:

Refer To: Page

Vacuum Switch ..................................... B-4

Low Voltage .......................................... B-13

On/ Off Switch (Testing) ....................... B-15

Fuse ..................................................... B-12

All

Vacuum System

Problem: Will Not Run

Verify Switches in Electrical Box Are On





1st

Check Fuse

Refer to: Section B Fuse





6th

Check Voltage in Breaker

Note: If circuit breaker is tripped, measure voltage at the line

side of the vacuum switch while the unit is running. Voltage

should be in the range of

208-230. Voltage outside this range

may result in failure to start and possible damage to unit.

Install a buck/boost transformer as required.





2nd

Check Low Voltage

Refer to: Section B Low Voltage





3rd

Check On/Off Switch

Refer to: Section B On/Off Switch





4th

Check Vacuum Switch

Refer to: Section B Vacuum Switch





5th

WARNING

High Voltage. When testing

components with power on use

care to prevent electrical shock.

Rev. 3/10

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A-9

Troubleshooting

Models:

Serial Numbers:

WARNING

Pump Motors are thermally protected with an

automatic reset and may start without warning.

Problem Probable Cause Correction

Pump vanes sticking. Clean pump with Midmark flushing solvent.

Pump vanes worn.

Replace vanes.

Vacuum switch "off" point set too low. Adjust vacuum switch.

Disposable collection canister in operatory full. Replace canister.

Vacuum switch "on" point set too high. Adjust vacuum switch.

Exhaust muffler dirty or exhaust piping plugged.

Remove and clean metal exhaust muffler.

Disassemble, inspect and clean exhaust system

as necessary. Verify outside exhaust vent is open.

Dirt buildup in pump chamber.

Clean pump with Midmark flushing solvent.

Pump vanes worn. Replace vanes.

Excessive ambient temperature in equipment room.

Check that installation site is properly vented and ,

if necessary, air conditioned to prevent ambient

temperature from exceeding 104 degrees

Fahrenheit.

Vacuum lines plugged, damaged or collapsed.

Pump filters dirty. Replace filters.

Vacuum lines plugged, damaged or collapsed. Repair lines.

Repair lines.

Pump overheats

(Operating Temperature

measured at pump Exhaust is

180 degrees Fahrenheit or

Higher)

Low Suction in Operatories

Pump filters dirty. Replace filters.

Vacuum lines plugged, damaged or collapsed. Repair lines.

High Vacuum Level at

PowerMax

Pump filters dirty. Replace filters.

Go To Table Of Contents

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A-10

Troubleshooting

Models:

Serial Numbers:

Problem Probable Cause Correction

Pump check valve's) leaking. Clean or replace check valve.

Leak in PowerMax or piping system.

Check for leaks by allowing PowerMax to reach 20

Hg and shut down. Close the receiver tank inlet

valve to isolate unit from piping system. Do not

use any vacuum from piping system for several

minutes. If the vacuum gauge continues to drop

while inlet valve is closed, the leak is within the

unit. If the vacuum gauge maintains the same

reading, but drops after opening the inlet valve,

the leak is in the piping system.

Motor overloaded due to problem with vacuum pump. See " Pump Overheats".

Motor bearings defective. Listen for noisy bearings. Return unit to Midmark for repair.

Motor dirty. Clean / vacuum motor vents.

PowerMax inlet ball valve closed. Open inlet ball valve.

Open or damaged vacuum piping. Repair Vacuum lines.

Tank drain valve open. Close drain valve.

Service switches in PowerMax electrical box in "Off" position.

Each PowerMax pump has its own on-off switch.

Verify that each switch in the electrical box is in

the "On" position.

Electrical Component is not working properly. Check Line Voltage.

Fuse blown. Check fuse.

Low Voltage. Check Low Voltage.

PowerMax Cycles with No

Vacuum Being Used

Motor Overheats; Thermal

Overload Shuts Down Motor

(See Warning at beginning of

Troubleshooting Table)

PowerMax runs but there is no

suction in the operatory.

PowerMax will not run

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Section B

Testing & Repair

B-1

Components Page

Pump Filters ......................................... B-2

Check for Leaks .................................... B-3

Vacuum Switch ..................................... B-4

Exhaust Mufflers ................................... B-9

Check Valve ......................................... B-10

Low Voltage .......................................... B-12

Fuse ..................................................... B-14

On/Off Switch ...................................... B-16

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Testing & Repair

B-2

Models:

Serial Numbers:

Filters

All

Filters

Function and Location

Atmospheric air is drawn in through inlet filter before flowing to the

vacuum/motor and exhaust air is released through the outlet filters.

Filters protect the pump/motor from moisture and debris. Filters

should be changed annually.

Outlet Filter

Inlet Filter

www.midmark.com:

File Name

Filter Replacement .................... 10542100

AA217300

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Testing & Repair

B-3

Models:

Serial Numbers:

AA205900

Checking for Leaks

Checking For Leaks

Check

All

Soapy

Water

Step 1: Check for Leaks...

• Run PowerMax until gauge reaches 20 "Hg.

• Close the receiver tank inlet valve.

• Do not use any vacuum for several minutes.

Note: If the vacuum gauge continues to drop while

the inlet valve is closed, the leak is within the unit.

If the vacuum gauge maintains the same reading,

but drops after opening the inlet valve, leak is in the piping system.

Avoid water contact with electrical parts.

Step 2: If gauge shows there is a leak, use soapy

water to check for plumbing joint leaks.

Caution

Gauge

Valve in Closed

Position

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Testing & Repair

B-4

Models:

Serial Numbers:

Vacuum Switch

All

Vacuum Switch

Function and Location

Refer To: Page

Adjustment (Check SN on Page)...B-5 & B-6

Testing (Check SN on Page) ........B-7 & B-8

Wire Diagrams ...................................... D-1

Exploded Views .................................... E-1

The vacuum switch regulates the vacuum level.

A vacuum gauge monitors the vacuum levels.

Vacuum switch is factory set at 13 "Hg.

AA215400

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Midmark POWERMAX Wiring diagram

Midmark POWERMAX Wiring diagram

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