MULTIPLEX Beermaster 75 Temp Control Retrofit Kit EI219360 Installation guide

Brand: MULTIPLEX

Model: Beermaster 75 Temp Control Retrofit Kit EI219360

Type: Installation guide

In accordance with our policy of continuous product development and improvement,

this information is subject to change at any time without notice.

EI219360 Issued (JMT/KAK) 6 March, 2001

Manitowoc Beverage Equipment

2100 Future Drive  Sellersburg, IN 47172-1868

Tel: 812.246.7000, 800.367.4233  Fax: 812.246.9922

www.manitowocbeverage.com

Foodservice Group

Multiplex Beverage Equipment Installation Instructions for

Electronic Temperature Control Retrofit Kit

for Model 75 Beermaster Glycol Chiller

P.N. 00219360

This kit is designed to replace the existing Ranco mechani-

cal temperature control in a Multiplex Model 75 Beermaster

Glycol Chiller. The Electronic Temperature Control (ETC) is

mounted under the top cover of the Model 75 Beermaster Gly-

col Chiller and provides a constant display readout of the sen-

sor temperature. It will be readily visible by lifting the top

cover of the unit.

Installing the electronic temperature

control retrofit kit

Tools Required

 Screwdriver,

/32" Tip

 Screwdriver,

/4" Tip

 Screwdriver, #2 Phillips

 Nut Driver,

/16"

 Wire Cutter/Stripper

Installation

1. Turn “off” all control switches on unit.

2. Disconnect electrical power at branch circuit disconnect.

For cord-connected units, simply unplug the power cord.

3. Remove the cover panel from unit.

4. Remove the access panel from switch/control box.

5. Remove cover from temperature control mounted to bulk-

head.

6. Loosen two (2) terminal screws and disconnect both brown

wires.

7. Pull wires back through hole in bottom of control.

8. Cut the terminal connectors off the brown wires and strip

the wire ends

/16". Note that one (1) of the wires is at-

tached to one (1) of the control switches and the other

wire is routed to the refrigeration compressor.

9. From the opposite side of the bulkhead, loosen and re-

move two (2) screws that secure the temperature con-

trol. Remove the temperature control from the unit.

10. Position the ETC assembly where the holes in the rear

flange of the mounting bracket align with the holes in the

bulkhead, and the holes in the mounting bracket front

flange align with the two (2) holes in the front flange of

the motor shelf.

11. Secure the ETC assembly with two (2) #10 Phillips head

screws through the bulkhead holes, and with two (2) #10

hex head screws into the motor shelf.

Note: The screws into the motor shelf are self-threading

screws. Use a 5/16" nut driver to install.

12. Route the blue and brown wires extending from the ETC

into the switch/control box via the wire opening in the

bottom of the box.

13. Disconnect the two (2) wire nuts, add the blue and brown

wires to their respective wire groups, and reconnect the

wire nuts.

14. Loosen the four (4) screws in the ETC cover and open the

ETC.

15. Route the two (2) newly stripped brown wires formerly

connected to the old temperature control through the

opening in the end of the ETC.

16. Insert the stripped end of the wire from the control switch

into opening marked “C” of the ETC lower terminal block.

Tighten the pressure screw to secure the wire.

17. Insert the other stripped wire end into the adjacent open-

ing, marked “NO”. Tighten the pressure screw to secure

the wire.

18. Replace the cover on the ETC and temporarily secure by

partially starting two (2) diagonal screws (the cover will

be removed again later).

19. Route the sensor cord through an opening in the bulkhead

to the glycol tank

20. Using cable ties, secure the sensor to the bracket attached

to the evaporator.

21. Attach the cover plate to the switch/control box.

EI219360 Issued (JMT/KAK) 6 March, 2001

Equipment Installation Instructions

Caution: To Avoid Serious Injury

Important: Read the following warnings before beginning an installation. Failure to do so

may result in possible death or serious injury.

DO Adhere to all National and Local Plumbing and Electrical Safety Codes.

DO Turn “off” incoming electrical service switches when servicing, installing, or

repairing equipment.

DO Check that all flare fittings on the carbonation tank(s) are tight. This check

should be performed with a wrench to ensure a quality seal.

DO Inspect pressure on Regulators before starting up equipment.

DO Protect eyes when working around refrigerants.

DO Use caution when handling metal surface edges of all equipment.

DO Handle CO

2 cylinders and gauges with care. Secure cylinders properly against

abrasion.

DO Store CO2 cylinder(s) in well ventilated areas.

DO NOT Throw or drop a CO2 cylinder. Secure the cylinder(s) in an upright position

with a chain.

DO NOT Connect the CO2 cylinder(s) directly to the product container. Doing so will

result in an explosion causing possible death or injury. Best to connect the

CO2 cylinder(s) to a regulator(s).

DO NOT Store CO2 cylinders in temperature above 125°F (51.7°C) near furnaces,

radiator or sources of heat.

DO NOT Release CO2 gas from old cylinder.

DO NOT Touch Refrigeration lines inside units, some may exceed temperatures of

200°F (93.3°C).

Notice: Water pipe connections and fixtures directly connected to a potable water supply

shall be sized, installed and maintained in accordance with Federal, State, and Local codes.

EI219360 Issued (JMT/KAK) 6 March, 2001

Equipment Installation Instructions

How to operate the electronic

temperature control

The LCD display provides a constant readout of the sensor

temperature and indicates if the output relay is energized.

The output relay controls operation of the refrigeration com-

pressor. When the S1 annunciator is constantly illuminated

during operation, the relay is energized and the compressor

should be running. The display is also used in conjunction with

the keypad to adjust the set-point temperature and differen-

tial.

Set-up

The temperature set-point refers to the temperature at

which the normally open (NO) contacts of the output relay

will open. The differential refers to the number of degrees

between the set-point temperature and the temperature at

which the NO contacts close. The differential may be set for a

heating mode or cooling mode. For the cooling mode, the dif-

ferential is above the set-point. The relay will de-energize as

the temperature falls to the set-point. It will energize when

the temperature rises above the differential.

Programming

1. Connect power to Multiplex Model 75 Beermaster Glycol

Chiller.

2. To program the ETC, press the SET (

) key once to access

the Fahrenheit/Celsius mode. The display will show the

current status, either F for degrees Fahrenheit or C for

degrees Celsius. Then press either the up arrow (

) or

down arrow ( ) key to toggle to the F designation.

3. Press the SET (

) key again to access the set-point. The

LCD will display the current set-point and the S1 annun-

ciator will be blinking “on” and “off” to indicate the

control is in the set-point mode. Then press the

up arrow (

) or down arrow ( ) key to set the set-point

at 28.

4. Press the SET (

) key again to access the differential.

The LCD will display the current differential and the DIF 1

annunciator will be blinking “on” and “off” to indicate

that the control is in the differential mode. Press the ap-

propriate up arrow (

) or down arrow ( ) to set the dif-

ferential to 2.

5. Press the SET (

) key again to access the cooling or heat-

ing mode. The LCD will display either C1 or H1. If H1 is

displayed, press either the up arrow (

) or down arrow ( )

to toggle to C1. Press the SET (

) key once more and

programming is complete.

Note: The ETC will automatically end programming if no keys

are depressed for a period of thirty seconds. Any settings that

have been input to the control will be accepted at that point.

All control settings are retained in non-volatile memory if

power to the ETC is interrupted for any reason. Re-program-

ming is not necessary after power outages or disconnects un-

less different control settings are required.

Lockout Switch

The ETC is provided with a lockout switch to prevent tam-

pering by unauthorized personnel. When placed in the LOCK

position, the keypad is disabled and no changes to the set-

tings can be made.

To access the lockout switch, disconnect the power supply

and open the control cover. The switch is located on the inside

of the cover about 2 inches above the bottom. To disable the

keypad, slide the switch to the left LOCK position.

After programming is complete and the control is locked,

place the ETC cover in position and tighten the four (4) screws.

Replace top cover of the Multiplex Model 75 Beermaster Gly-

col Chiller, restore power to the unit, and turn control switches

“on”. Verify settings and display after refrigeration has stabi-

lized and cycled “on” and “off”.

EI219360 Issued (JMT/KAK) 6 March, 2001

Equipment Installation Instructions

Troubleshooting Error Messages

Display Error/Problem How to Correct

E1 Appears when either the up arrow ( ) or If the E1 message appears even when no keys are

down arrow (

) key is pressed when not in the being pressed, replace the control.

programming mode.

E2 Appears if the control settings are not properly Check all settings and correct if necessary.

stored in memory.

EP Appears when the probe is open, shorted, or Check to see if the sensed temperature is out of

sensing a temperature that is out of range. range. If not, check for probe damage by

comparing to a known ambient temperature

between –30°F and 220°F. Replace the probe if

necessary.

EE Appears if the EEPROM data has been corrupted. This condition cannot be field repaired. Replace

the control.

CL Appears if the calibration mode has been entered. Disconnect power to the control for at least

5 seconds. Reconnect power. If the CL message

still appears, replace the control.

MULTIPLEX Beermaster 75 Temp Control Retrofit Kit EI219360 Installation guide

MULTIPLEX Beermaster 75 Temp Control Retrofit Kit EI219360 Installation guide

MULTIPLEX Beermaster 75 Temp Control Retrofit Kit EI219360 Installation guide

Related papers

Other documents