background image

MECHANICAL SYSTEM

The mechanical system of the Ice-O-Matic Ice
Dispenser consists of a gear motor assembly that
drives (through a ratchet coupling) a worn shaft or
auger placed on its vertical axis within the freezing
cylinder.

The gear motor is made of a single-phase electric
motor with a permanent capacitor. This motor is
directly fitted in the gear case through which it
drives – in a counter clockwise rotation at a speed
of 9.5 rpm – the freezer auger linked to it by the
ratchet coupling.

NOTE If the gear motor rotates in the wrong
direction (counter-clockwise) or is not rotating at all
the unit will stop immediately and the 3RD
WARNING YELLOW LED will turn on showing the
intervention of the Electromagnetic Safety Device -
based on Hall Effect principle.

After diagnosing and eliminating the source of the
failure, restart the unit by pressing the RESET
button or turn the power switch OFF and ON (Fig.
7).

The RED LED will start blinking and after 3
minutes the ice machine will resume normal
operations by running first the gear motor and then
the compressor.

When the gear motor rotating speed is slowed
below 1300 rpm - normal speed is 1400 rpm - the
Electromagnetic Safety Device transmits an
electrical signal to the MICROPROCESSOR to
stop the unit operation immediately (just as it does
for the wrong rotation) and the 3rd YELLOW
WARNING LED turns on. This is done to avoid

overloading the electrical and mechanical
components of the entire Drive System and extend
their durability.

NOTE: After diagnosing and eliminating the source
of the gear motor slow rotation, restart the unit by
pushing the RESET button to or turning the power
line main switch OFF and ON.

NOTE: Any time the machine stops with a problem
the front 4 LED’s start to blink.

REFRIGERANT METERING DEVICE:

·

Capillary tube

OPERATING PRESSURES

(With 70°F ambient temperature)

·

Discharge pressure: 130 to 145 psig

·

Suction pressure: 14.5 psig

·

REFRIGERANT CHARGE (R134 A): 13 oz.

NOTE: Before charging the refrigerant system
always check the type of refrigerant and quantity
as specified on the individual ice machine data
plate.

The refrigerant charges indicated are relatives to
averages operating conditions.

GEMD270A

Page 14

Fig 7

Bin full

Bin empty

Reset button

No water

Power

Hi cond temp when Steady

3 minute wait when Blinking

Auger Motor when Steady

Hi evap temp when Blinking

Summary of Contents for GEMD270A

Page 1: ...MODEL GEMD270A PEARL ICE WATER DISPENSER SERVICE AND INSTALLATION MANUAL Ice O Matic 11100 East 45th Ave Denver Colorado 80239 Part Number 9081407 01 Print Date 9 09...

Page 2: ...SERVICE PARTS MANUAL 22 INCH WIDE ICE SERIES CUBERS MODEL ICE0320 ICE0520 Includes 50Hz Units ICE O Matic 11100 East 45th Ave Denver Colorado 80239 Part Number 9081297 01 PD04 02 Rev1 05...

Page 3: ...ONNECTIONS Page 5 WATER SUPPLY AND DRAIN CONNECTIONS Page 6 FINAL CHECK LIST Page 7 OPERATING INSTRUCTIONS Page 8 INITIAL START UP CONTINUED Page 9 SETTING THE DISPENSING SELECTOR Page 11 PRINCIPLE OF...

Page 4: ...S GEMD270A Page 2 Model Cond unit Cabinet Size Finish Comp HP Ice bin cap GEMD270A Air 34 13 32 high x 15 9 32 wide x 26 7 64 deep S Steel 3 8 12 lb Basic electrical Amps Watts Amps fuse 115 60 1 6 55...

Page 5: ...CABINET DIAGRAMS GEMD270A Page 3...

Page 6: ...including Model and Serial Number taken from the data plate Forward the completed self addressed registration card to Ice O Matic factory LOCATION AND LEVELING WARNING This Ice Dispenser is designed...

Page 7: ...sure that the ice machine is connected to its own circuit and individually fused see data plate for fuse size The maximum allowable voltage variation should not exceed 10 and 10 of the data plate rati...

Page 8: ...ar WATER SUPPLY Connect to the male water inlet fitting using the supplied fitting to the cold water supply line A shut off valve should be installed in an accessible position between the water supply...

Page 9: ...en checked to ensure a flowing water pressure of at least 20 psi 7 Check all refrigerant lines and conduit lines to guard against vibrations and possible failure 8 Has the unit been sealed to the coun...

Page 10: ...After 3 minutes have elapsed the stand by period the unit starts operating by activating systems in following sequence 1 GEAR MOTOR 2 COMPRESSOR 3 FAN MOTOR which is controlled by the condenser tempe...

Page 11: ...panels and if needed connect the refrigerant service gauges to the corresponding service valves to check both the HI and LO refrigerant pressures NOTE The condenser temperature sensor which is located...

Page 12: ...start up immediately 2 seconds later the compressor will start and after the 3 minutes the unit resumes normal operation F To check for the correct operation of the electronic eye that controls ice b...

Page 13: ...shing the proper switch b Place a glass or a carafe in front of the two Optical Dispensing Devices c The dispensing drive motor and or the water solenoid valve starts Ice and or water is discharged th...

Page 14: ...r and is powered by a direct drive gear motor It carries the ice upward along the inner walls of the freezer and as it raises the ice gets progressively thicker and harder As the ice rises upward it m...

Page 15: ...microprocessor on the PC Board that energizes through a TRIAC the Fan Motor in ON OFF mode When the condenser temperature goes below the pre fixed limit the temperature sensor changes its electrical...

Page 16: ...he gear motor rotating speed is slowed below 1300 rpm normal speed is 1400 rpm the Electromagnetic Safety Device transmits an electrical signal to the MICROPROCESSOR to stop the unit operation immedia...

Page 17: ...ce machine is off and why C CONDENSER TEMPERATURE SENSOR BLACK TWO POLE CONNECTOR MANUAL RESET The condenser temperature sensor probe located within the condenser fins detects condenser temperature va...

Page 18: ...ith the two infrared sensors of ice level control The RED LED lights up and after 6 seconds the ice machine resume its operation and the 6th YELLOW LED turns off F ICE WATER OPTICAL DISPENSING DEVICE...

Page 19: ...lastic box on the right side of the unit consists of two separated printed circuit boards one at high voltage and the other at low voltage protected by three fuses integrated with a RESET button It al...

Page 20: ...otor reducer is made of a single phase electric motor with a permanent capacitor directly fitted on a gearbox The drive motor rotor is kept aligned on its vertical axis by two permanently lubricated b...

Page 21: ...ops Check for correct operation of drive after a while motor magnetic sensor Check for correct magnetic capacity of magnetic cylinder Compressor cycles intermittently Low voltage Check circuit for ove...

Page 22: ...st float valve setting screw Excessive noise or chattering Mineral or scale deposit on auger Remove and manually polish auger and inner freezer walls and inner walls of freezer barrel using emery pape...

Page 23: ...elp of a bit of ice machine cleaner plain 7 With the ice machine and fan motor OFF clean condenser using vacuum cleaner whiskbroom or non metallic brush taking care to do not damage the condenser temp...

Page 24: ...the water reservoir taking care to maintain the level just below the overflow NOTE The ice made with the cleaning solution is slushy and colored It may also loose fluidity creating some resistance in...

Page 25: ...n 11 Remove nut holding bin to chassis 12 Pull bin out of machine 13 Remove screws holding air deflector to chassis and pull deflector out of the unit 14 Remove screws holding reservoir to bulkhead pa...

Page 26: ...lace large washers over coupling and small washer under bottom of bearing Insert bolt through large washers coupling and bearing Run one nut into bearing to center the bolt Add small washer and nuit T...

Page 27: ...e thrust bearing and place it on top of the roller bearing The inner race of the roller bearing must project through the center of the flat thrust bearing 9 Install the flat washer provided with the n...

Page 28: ...ring and bottom seal Rotating Half 1 Remove old rotating half from the auger Clean the mounting area 2 Place a bead of food grade sealant onto the shoulder of the auger where the rotating half of the...

Reviews: