IMI Cornelius, Inc. IDC 2XX Installation Manual

Page 1

DESCRIPTION

The IDC series of dispensers solves your ice and beverage service needs in a sanitary, space saving, economical way. Designed to be manually filled with ice from any remote ice-making source, these dispensers will dispense cubes (up to 1–1/4 inch in size), cubelets, and compressed (not flaked). In addition, the units include beverage faucets, a cold plate, an internal carbonator tank and an external pump for the carbonator, and are designed to be supplied direct from syrup tanks with no additional cooling required.

SPECIFICATION

IDC Installation Manual

INSTALLATION MANUAL

IDC 2XX with Cold Carbonation

Model Descriptions: IDC 215

B=Beverage C=Coldplate H=Internal Carb Z=No Drip Tray

Ice Storage: 215 Pounds 255 Pounds

Maximum Number of Faucets Available:

Built–in Cold Plate: Yes Yes

Electrical: 120/1/60,

Dimensions: Width 30 inch

10 10

9.3 Amps of Total Unit Draw

220/1/50,

4.7 Amps of Total Unit Draw

Deep 30-11/16 inch High 36 inch (to top of bin) 36-3/4 inch (to top of lid)

Z-Models

Width 30 inch Deep 23-1/16 inch High 36 inch (to top of bin) 36-3/4 inch (to top of lid)

IDC 255

B=Beverage C=Coldplate H=Internal Carb Z=No Drip Tray

30 inch 30-11/16 inch 39 inch (to top of bin) 39-3/4 inch (to top of lid)

30 inch 23-1/16 inch 39 inch (to top of bin) 39-3/4 inch (to top of lid)

2 Operating Pressure 75-psig (max) 75-psig (max)

Ambient Operational Temperature

Revision Date: August 20, 2009 Revision: F

65 to 95

F. (18.3 to 35o C.) 65 to 95o F. (18.3 to 35o C.)

Page 2

IDC Installation Manual

SAFETY INSTRUCTIONS

Read and Follow all Safety Instructions

Read and follow all safety instructions in this manual and on the machine (decals, labels, and laminated cards).

Read and understand all applicable OSHA (Occupation Safety and Health Administration) safety regulations before operating the machine.

Recognize Safety Alerts

This is the safety alert symbol. When you see it in this manual or on the machine be alert to the potential of personal injury or damage to the machine.

Different Types of Alerts

There are 3 types of safety alerts:

DANGER — Indicates an immediate hazardous situation which if not avoided WILL result in seri-

ous injury, death, or equipment damage.

WARNING — Indicates a potentially hazardous situation which, if not avoided, COULD result in

serious injury, death, or equipment damage.

CAUTION — Indicates a potentially hazardous situation which, if not avoided, MAY result in

minor or moderate injury or equipment damage.

Safety Tips

• Carefully read all safety messages in this manual and safety signs on the machine.

• Keep safety signs in good condition and replace missing or damaged safety signs.

• Learn how to operate the machine and how to use the controls properly.

• Do not let anyone operate the machine without proper training. This appliance is not intended for use by very young children or infirm persons without supervision. Young children should be supervised to ensure that they do not play with the appliance.

• Keep your machine in proper working condition and do not allow unauthorized modifications to the machine.

Qualified Service Personnel

CAUTION — Only trained and certified electrical, plumbing and refrigeration technicians should

service this unit. ALL WIRING AND PLUMBING MUST CONFORM TO NATIONAL AND LOCAL CODES.

CO2 (Carbon Dioxide) Warning

WARNING — CO2 Displaces Oxygen. Strict Attention must be observed in the prevention of

CO2 gas leaks in the entire CO2 and soft drink system. If a CO2 gas leak is suspected, particularly in a small area, immediately ventilate the contaminated area before attempting to repair the leak. Personnel exposed to high concentration of CO2 gas will experience tremors which are followed rapidly by loss of consciousness.

Shipping And Storage

CAUTION — Before shipping, storing, or relocating the Unit, syrup systems must be sanitized

and all sanitizing solution must be purged from the syrup systems. All liquids, after sanitizing, must be purged from the unit. A freezing ambient environment will cause residual sanitizing solution or water remaining inside the Unit to freeze resulting in damage to the internal components.

Page 3

INSTALLATION

IMPORTANT: TO THE INSTALLER. It is the responsibility of the Installer to ensure that the water supply to the dispensing equipment is provided with protection against backflow by an air gap as defined in ANSI/ASME A112. 1.2– 1979; or an approved vacuum breaker or other such method as proved effective by test.

Water pipe connections and fixtures directly connected to a potable water supply shall be sized, installed, and maintained according to Federal, State, and Local laws.

1. Locate the dispenser indoors on a level counter top. A. LEG OPTION

Unpack the four (4) legs and install them into the threaded holes provided in the bottom of the unit. The installer must provide flexibility in the product and utility supply to permit shifting the position of the dispenser sufficiently to clean the area beneath it. The dispenser MUST be placed in a horizontal position.

B. COUNTER MOUNTING

The ice dispenser must be sealed to the counter. The template drawing (see Figure 2) indicates where openings can be cut in the counter. Locate the desired position for the dispenser, then mark the outline dimensions on the counter using the template drawings. Cut openings in the counter.

Apply a continuous bead of 4-inch inside of the unit outline dimensions and around all openings. Then, position the unit on the counter within the outline dimensions. All excess sealant must be wiped away immediately.

2. The beverage tubes, drain tube and power cord are routed through the large opening in the bottom of the unit. See the MOUNTING TEMPLATE (Figure 2) for locating the required clearance opening in the counter for these utility lines.

3. DRIP TRAY DRAIN ASSEMBLY (see Figure 3): Route the drain tube to an open drain with the end of the tube above the “flood” level of the drain. Use the tubing, fittings, clamps, and insulation provided with the Dispenser to assemble the drain. The completed drain line continuously downward and contain no “traps” or improper drainage will result.

IDC Installation Manual

NSF International (NSF) silastic sealant (Dow 732 or equal) approximately 1/

must pitch

NOTE: This equipment must be installed with adequate backflow protection to comply with federal, state, and local codes.

NOTE: IMI Cornelius Inc. recommends that a water shutoff valve and water filter be installed in the plain water inlet supply line. A Cornelius Water Filter (P/N 313860000) and QUICK DISCONNECT SET (P/N 313867000) are recommended.

CAUTION: Check the minimum flow rate and the maximum pressure of the plain water inlet supply line. MINIMUM FLOW RATE MUST BE AT LEAST 125-GALLONS PER HOUR. If flow rate is less than 125-gallons per hour, starving off the carbonator water pump will occur. Starving will allow the carbonator water pump to overheat causing the safety thermostat on the pump outlet to stop the water pump motor. Overheating could occur if the plain water supply line flow rate drops below 125gallons per hour. INCOMING PLAIN WATER INLET SUPPLY LINE WATER TO PUMP PRESSURE MUST REMAIN A MINIMUM OF 10 psi BELOW THE CARBONATED CO PRESSURE. (Example: Carbonator CO2 operating pressure is 75 psi and the maximum water pressure can be no more than 65 psi, etc.). Water over pressure (higher CO2 operating pressure) can cause carbonator flooding, malfunction, and leakage through the carbonator relief valve. If water is exceeding maximum pressure specifications, a Water Pressure Regulator Kit must be installed in the plain water inlet supply line. If fitting connector is not available, tap into the plain water supply line with a 3/8 flare saddle valve.

4. Locate the carbonator pump assembly and connect to power cord from the Ice/Drink Unit to the pump. The cord is connected to the unit’s electrical box and has an electrical connector on the end that plugs into a receptacle in the junction box at the carbonator pump assembly. Connect inlet water to pump and pump outlet to Ice/Drink Unit using 3/8-inch food-grade tubing. Disable the pump

2 OPERATING

Page 4

IDC Installation Manual

from operating by switching the switch in the carbonator pump assembly junction box to the OFF position.

5. Connect the beverage system product tubes as indicated in applicable Flow Diagram Figure 4 or Figure 5. This work should be done by a qualified service person.

NOTE: See applicable Flow Diagram (see Figure 4 or Figure 5) or Decal on the lower front of the unit for the location of syrup and water connections.

6. Clean the hopper interior (see CLEANING INSTRUCTIONS in Owner’s Manual).

7. Connect the unit power cord to a 120 volt, 60 cycle, 3-wire grounded receptacle. For 220-240 Volt International Units, a 3-wire power cord is provided. An adapter plug for the particular country will need to be provided by the Installer.

ADJUST CARBONATOR CO2 REGULATOR AND TURN WATER INLET SUPPLY LINE ON

CAUTION: Before connecting the CO2 regulator assembly to a CO2 cylinder, turn the regulator adjusting screw to the left (counterclockwise) until all tension is relieved from the adjusting screw spring.

1. Open (counterclockwise) CO the valve fully to back-seat the valve. (Back-seating the valve prevents leakage around the valve shaft).

2. The carbonator CO

3. Open one of the post-mix dispensing valves to exhaust trapped air inside the carbonator tank.

CAUTION: Never operate the carbonator pump with the water inlet supply line shutoff valve closed. “Dry running” the water pump will burn out the pump. A pump damaged in this manner is not covered by warranty.

4. Open the water inlet supply line shutoff valve.

UNIT OPERATION

WARNING: The unit must be electrically grounded to avoid possible fatal electrical shock or serious injury to the operator. The unit power cord is equipped with a three-prong plug. If a three-hole (grounded) electrical outlet is not available, use an approved method to ground the unit.

1. Connect electrical power to the Unit.

2. Check for water and CO

3. Enable the carbonator pump by turning the switch ON. The switch is located on the junction box of the carbonator pump. The water pump will start and fill the carbonator tank with carbonated water. The water pump will stop when the carbonator tank is full. The carbonator pump will now cycle on whenever a drink is dispensed and the liquid level in the carbonator tank drops below the low level probe (approximately 22 oz).

4. Dispense a drink until the carbonator pump cycles on. The refill time should be about 5 - 7 seconds.

5. If the carbonator pump appears to be short-cycling where the refill time is 1 - 2 seconds, refer to the Troubleshooting section.

2 cylinder valve slightly to allow lines to slowly fill with gas, then open

2 regulator is fixed at a nominal 75 psi.

2 leaks and tighten any loose connections.

NOTE: The dispenser is not designed for a wash down environment and must not be placed in an area where a water jet could be used.

Page 5

GATE RESTRICTOR PLATE AND ADJUSTMENT

The rate at which ice is dispensed can be adjusted by varying the opening of the gate restrictor plate as illustrated in Figure 1. Reducing the dispense rate of ice is especially desirable when using glasses or other containers with small openings. To adjust the gate restrictor plate, loosen the (4) nuts that hold the ice chute assembly to the bin. The restrictor plate can now be moved up or down. When the restrictor plate is fully up, the ice gate opening is 2-1/2” in height, and the maximum rate of ice dispense is available (approximately 3 oz/sec). Retighten the (4) nuts to set the desired restrictor plate opening. DO NOT EXCEED 50 IN-LB of torque.

DISCONNECT POWER BEFORE INSTALLING,

REMOVING, OR ADJUSTING RESTRICTOR.

INSTALL PLATE

ON STUDS AS

IDC Installation Manual

SHOWN

ADJUSTMENT

MAX TORQUE

50 in.-lb.

Figure 1. Gate Restrictor Plate

NOTE: Tighten (4) nuts for fastening lower ice chute in place to 50 in-lbs (max). Draw all four nuts tight uniformly.

Page 6

IDC Installation Manual

15/16

7/16 DIA.

26 3/81 13/16

ZStyle

18 5/8

31/2

91/2

REMOVABLE SINK

RECOMMENDED COUNTER OPENING SIZE 9 X 12 FOR UTILITIES A ND BEVERAGE TUBING. OPENING CAN BE LOCATED ANYWHERE WITHIN SHADED AREA.

21 1/4

31 1/2

23 1/16

Figure 2. IDC 2XX Mounting Template

Page 7

HOSE CLAMP

DRAIN LINE 1" I.D. PLASTIC TUBING (6') WITH INSULATION

IDC Installation Manual

Figure 3. Drip Tray Drain Assembly

Page 8

IDC Installation Manual

THIS EQUIPMENT MUST BE INSTALLED WITH ADEQUATE BACKFLOW PROTECTION TO COMPLY WITH APPLICABLE FEDERAL, STATE AND LOCAL CODES.

INCLUDED WITH UNIT

VALVES

56 7

PW= PLAIN WATER

CW= CARBONATED WATER

PLAIN WTR IN

CARB WTR IN

W2W1

TOTAL FLEX MANIFOLD

COLDPLATE

ICE

CHUTE

SECONDARY REGULATOR

SYRUP BIB'S 60 PSIG

TOTAL FLEX MANIFOLD

PRIMARY REGULATOR

CARB TANK OUT

CARB TANK IN

OUT

CARB TANK

PUMP & MOTOR ASY

PRESSURE

CO2 CYLINDE

REGULATOR OR BOOSTER

PUMP MAY BE

REQUIRED

CITY WATER

WATER FILTER

Figure 4. Flow Diagram - Eight Flavor Unit

IMPORTANT: THIS EQUIPMENT MUST BE INSTALLED WITH ADEQUATE BACKFLOW PROTECTION

TO COMPLY WITH APPLICABLE FEDERAL, STATE AND LOCAL CODES.

INCLUDED WITH UNIT

PW = PLAIN WATER

CW = CARBONATED WATER

TOTAL FLEX MANIFOLD

W2W1

VALVES

CHUTE

COLDPLATE

ICE

TOTAL FLEX MANIFOLD

PRIMARY

REGULATOR

110 PSIG

CO2

SECONDARY REGULATOR

60 PSIG

S10

CYLINDER

SYRUP BIB's 60 PSIG

PRESSURE REGULATOR ORBOOSTER

MAYBE

REQUIRED

TOBE POST-CHILLED

PRE-CHILLEDWATER

WATER

PUMP

PUMP & MOTOR ASY

FILTER

CITY

WATER

Figure 5. Flow Diagram - Ten Flavor Unit

Page 9

ICE AGIT. MOTOR

HEATER

IDC Installation Manual

BLK

GRN/YLW

(N)

GRN

WHT

(L)

BRN

BLK

ELECTRICAL

JUNCTION BOX

CARB. MOTOR PUMP ASY

CORD

POWER

ELECTRIC SHOCK HAZARD. DISCONNECT

POWER BEFORE SERVICING UNIT.

MAIN ELECTRICAL BOX

WHT

BLK

GRN/YLW

GRN

RED

BLU

BRN

BLK

WHT

BLK

WHT

BLK

WHT

BLK

GRN

WHT

LOW LIQUID LEVEL PROBE

BLK

RED

CARB. TANK

WHT

YEL

BLK

YEL

HI LIQUID LEVEL PROBE

BLK

WHT

BLK

BRN

BLU

BLK

WHT

CAPACITOR

YEL YEL

TRANSFORMER

YEL

BALLAST

WHT

BLK

RED

YEL YEL

BLK

LIGHT

SOCKET

STARTER

WHT

ICE

GATE

SWITCH

BLK

LIGHT

SOCKET

VALVES

TRANSFORMER

YEL

WHT

YEL

BLK

RED

BLK

RED

KEY

SWITCH

Figure 6. Wiring Diagram - 120V Unit

Page 10

IDC Installation Manual

ICE

HEATER

AGIT.

MOTOR

BRN

BLU

GRN/YLW

RED

BLU

GRN

BRN

EARTH

CARB MTR

EARTH_IN

AGIT

EARTH

L2_AGIT

AGIT

CARB.

PUMP

MOTOR

BLU

CARB MOTR L2

BRN

TIME

WHT

BLK

WHT

RED

LIQUID LEVEL

(CARB. TANK)

CONTROL PROBES

BRN

BALLAST

BLK

BLU

BRN

BLU

WHT

STARTER

POWER

SWITCH

BLK

LIGHT

SOCKET

ASY

GRN

BLK

HEATR

CARB MOTR

OFF

TIME

CORD

POWER

BLU

GRN

BLU

BRN

WHT

BLU

BRN

BLK

BLU

BRN

XFORMR

L2_IN

L2_

BALST

L2_

HEATR

WHT

L1_IN

XFORMR

L1_BALST

BLK

RED

BRN

SWITCH

BRN

ICE GATE

CAPACITOR

LIGHT

BRN

SOCKET

WIRING DIAGRAM 230V IDC2XXX

RED

WHT

RED

BLK

KEY

SWITCH

TOTAL FLEX

LEFT & RIGHT

SOLENOID BLOCKS

BLU

BRN

BLU

BRN

YEL

ORN

TRANSFORMER

ELECTRIC SHOCK HAZARD

620410555 REV 1

DISCONNECT POWER

BEFORE SERVICING UNIT

Figure 7. Wiring Diagram - 230V Unit

Page 11

IDC Installation Manual

L1 L2

EARTH

L1_IN

L1_BALLAST

L1_HEATER

CARB MOTOR

CARB MOTR

CARB EARTH

AGITATOR MOTOR

AGITATOR AGITATOR_L2

AGITATOR EARTH

OPTIONAL LIGHTING

BALLAST

FLOURESCENT LIGHT

STARTER

HEATER

CARB MOTR_L2

BALLAST_L2

HEATER_L2

L2_IN

E-BOARD

XFORMER_L1 L2_XFORMER

VALVES

KEY LOCK

120V Pri

XFRMR1

24V Sec

120V Pri

XFRMR2

24V Sec

80 VA

VALVES

80 VA

VALVES

E-BOARD

ICE GATE SWITCH

HIGH LEVEL PROBE LOW LEVEL PROBE GROUND

CARB TANK

Figure 8. Wiring Schematic

E-BOARD

Page 12

IDC Installation Manual

TROUBLESHOOTING

IMPORTANT: Only qualified personnel should service internal components or electrical wiring.

WARNING: If repairs are to be made to a product system, remove quick disconnects from the applicable product tank, then relieve the system pressure before proceeding. If repairs are to be made to the CO

pressure before proceeding. If repairs are to be made to the refrigeration system, make sure electrical power is disconnected from the unit.

Should your unit fail to operate properly, check that there is power to the unit and that the hopper contains ice. If the unit does not dispense, check the following chart under the appropriate symptoms to aid in locating the defect.

Symptom Cause Remedy

system, stop dispensing, shut off the CO2 supply, then relieve the system

Dispenser Troubleshooting

Blown fuse or circuit breaker

Agitator does not turn

Short circuit in electrical wiring Repair Wiring

Inoperable agitator motor (shorted motor)

No power Restore power or plug in unit

Improperly installed upper ice chute assembly (Reed switch is not being activated)

Inoperable reed switch Replace reed switch

Electrical board driver circuit is defective

Gear motor has open circuit Replace gear motor

Reed switch is not activated Improper assembly of upper ice chute to lower chute.

Broken wire in the 2-wire harness leading to the reed switch

Replace gear motor

Check the upper ice chute assembly for proper assembly and operation

Replace main control board

Check to make sure tongue of upper chute engages into the back of the lower chute, ensure upper chute engages outside the lower chute, and snap front of chute into place.

Repair of replace 2-wire harness

Bad connection at main control board, J3, pins 2 &3

Ice dispenses continuously

Slushy ice or water in hopper

Ice gate mechanism is stuck in open position

Stuck or bent ice lever (does not allow gate to close and open reed switch)

Blocked drains in cold plate Remove access covers in cold plate

Repair connection or replace 2-wire harness

Inspect gasket for proper position. Examine gate plate to see if it slides freely behind the lower ice chute.

Examine ice dispense lever to see if it is bent.

cover & inspect/clean drains

Page 13

IDC Installation Manual

Beverage does not dispense

Beverage is too sweet

Unit will not dispense carbonated drinks. Dispenses syrup only.

Poor ice quality due to water quality or

Correct water quality or repair ice maker

ice maker problems

No 24VAC to valves Restore 24 VAC to valves

No CO2 pressure Restore CO2 pressure

Valve brix requires adjustment Adjust valve brix

Carbonator is not operating Repair carbonator

No CO

City water pressure supply low or inconsistent

CO high.

in carbonator Restore CO2 pressure in carbonator

Booster pump must be used if dynamic water pressure drops below 40 psig.

pressure in carbonator tank is too

Check CO2 pressure regulator setting. 75 psig recommended. Relieve

pressure from carbonator tank.

Water valve will not open Check electrical connection to water

valve. Check resistance of coil (should be 9 ohms). Check for voltage at coil when brand button is depressed.

Unit will not dispense carbonated drinks. Spurts CO

and

syrup only.

Carbonator tank is empty, because tank was emptied while power was applied to unit. 5 minute time-out of carbonator pump/motor occurred, and carbonator pump is locked off.

Note that this can occur while the water filter system is serviced or water supply is shutoff. If drinks are drawn from the dispenser while water pressure is shutoff, the carbonator pump starts and runs continuously, then shuts off on the 5 minute timeout.

Carbonated drinks are flat (low on

is out Replace CO

carbonation)

Carbonator tank is 100% filled because the city water pressure exceeds the carbonator tank CO2 pressure regulator

setting.

Low water pressure Could be caused by excessively long

runs (over 40 ft.) of 3/8” water supply line.

Unplug the unit and reconnect the unit. Main control board will reset, ice agitation will occur, and carbonator tank will refill to normal level.

1) low water pressure switch deactivates carbonator pump, 2) after 5 minutes reset and retry carbonator pump. If water supply is restored, the 5 minute timeout will not occur. Repeat reset a second time, but on a third time, then lockout carbonator pump, which will generate a service call.

setting for the carbonator tank is

75 psig, max water pressure is 60 psig. If necessary, install a water pressure regulating valve.

Increase line size to 1/2”

Low water pressure Add water pressure booster pump

Plugged water filter. Change water filter

Water booster bladder has burst Replace water booster tank/bladder

Page 14

IDC Installation Manual

No Syrup or

Syrup supply is empty Replace BIB Watered down drink dispensed

BIB pump not working Replace BIB pump

No CO

BIB pump, or not enough pressure

or compressed air supply to

Check CO2 pressure regulator setting. 65 psig recommended. Replace CO tank or fix compressor.

Carbonator Troubleshooting

Symptom Cause Remedy

Carbonator pump does not start to fill tank

Power cord for the carbonator pump

motor is not connected.

Carbonator pump is powered off the main control board inside the electrical box of the unit. Check that the umbilical cord is connected from the unit to the pump motor terminal box.

Power cord is connected but carbonator pump

Carbonator pump motor is disabled. Check the enable/disable switch on the

carbonator pump terminal box and enable it, if necessary.

does not run.

Probes were dry, unit was powered up,

water was not turned on, and

carbonator did not fill.

This results in a 5 minute timeout. Unplugging the unit and plugging it in will reset the unit and start the carbonator pump.

Water service was interrupted for more

than 5 minutes.

Unplugging the unit and plugging it in will reset the unit and start the carbonator pump.

Carbonator pump is short cycling with every drink drawn

Carbonator tank overfills, overflows through relief valve,

Lower liquid level probe reads “dry”

while upper probe reads “wet”

A. Poor electrical connections between

carbonator tank and main control board

Check color of leads going to probes. Black should go to bottom probe and white to top probe. Reverse if incorrect.

A. Check connections at carbonator tank and at connector J4 on the main

control board. and pump shuts off after 5 minutes.

B. Broken wires between carbonator

B. Replace wire harness

tank and main control board

C. Defective liquid level probes C. Replace both liquid level probes

Contact your local syrup or beverage equipment distributor for additional information and troubleshooting of beverage system.

Page 15

DIAGNOSTICS GUIDE FOR THE MAIN CONTROL BOARD

IDC Installation Manual

State

0 Flash rate 3

1 Flash rate

2 Flash rate

3 Flash rate

4 Flash rate 1

Observed State

of Red LED

seconds

1/2 second

second

Sensor Input Control Response Service Remedy

Both probes read “wet” Standby mode. Pump

= OFF

Pump is OFF and HIGH probe reads “dry” and LOW probe reads “wet”

Both HIGH and LOW probes read “dry”

Entered when HIGH probe does not detect liquid, and LOW probe does detect liquid, and pump is ON

Entered when HIGH probe reads “wet” and LOW probe reads “dry”

Waiting for level to drop below LOW probe. Pump = OFF

Normal mode. Pump = ON

THIS IS AN ERROR CONDITION.

No service required

- Check electrical connections at the carbonator tank, and at connector J4 on the main control board

- Black wire should be connected to the LOW probe and also to Pin 4 of Connector J4

- Reverse the connections if incorrect

- Replace harness if necessary

5ON

continuously, but “flickers” every 3 seconds

6ON

continuously

Poor signal connection to the carbonator tank. May result in short cycling of the carbonator pump.

Entered when pump has run continuously for 5 minutes

Able to continue to function but carbonator pump short-cycles. Pump will come on each time a drink is drawn. THIS

SITUATION SHOULD BE CORRECTED.

THIS IS AN ERROR CONDITION.

Check the harness connections of the red signal wire at both ends:

1) at the carbonator ring terminal and

2) at Pin 5 of the J4 connector at the main control board

Unplug the unit and plug it back in. This will reset the unit's main control board and restart the carbonator pump.

IMI Cornelius, Inc. IDC 2XX Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual