background image

Components:

Refrigeration system, including air cooled
condenser, compressor, capillary tube and
evaporator.

Control system, including ice level sensor,
water sensor, auger motor sensor, controller,
control pad and transformer.

Auger drive system, including auger motor,
gear reducer and auger.

Auger support system, including top bearing
and water seal.

Water system, including the float and
reservoir.

Storage system, including ice storage bin,
drain and door.

The GEMU090 is a continuous flow ice machine.
When the control system senses that the storage
bin’s ice level is low, it turns on the compressor, fan
motor and auger drive motor.

During ice making the refrigeration system takes
heat from the evaporator. The evaporator is a
vertical refrigerated stainless steel tube containing
water and a slowly rotating auger. When the water
gets to the freezing point, ice begins to form. That
ice is very soft and is pushed up the evaporator
tube by the auger. As ice is made more warm
water enters at the bottom. The soft, mushy ice is
forced up to the top of the evaporator’s tube where
it is forced through nine tapered holes. As the ice is
pushed through the holes excess water is
squeezed out. The ice comes out of the holes
shaped as a rod of ice. The rods of ice are broken
off by being pushed against the tapered flange
above the holes, forming the irregular lengths of
pearl ice. The ice sweep, rotating with the auger,
moves the ice to the ice chute where it falls by
gravity into the storage bin.

Page 2

GEMU090
Service

Refrigeration System Schematic

Air Cooled

Condenser

Capillary Tube

Compressor

Evaporator
Assembly

Auger Drive
System

Liquid Line

Suction Line /

Heat

Exchange

Содержание GEMU090 Series

Страница 1: ...Service Manual GEMU090 Series Ice O Matic 11100 East 45th Ave Denver Colorado 80239 P t N b 9081430 02 D t 9 11 Part Number 9081430 02 Date 9 11...

Страница 2: ...the electrical or water supply charges related to the replacement of non defective parts or components damage by fire flood or acts of God This warranty is valid only when installation service and pre...

Страница 3: ...em Page 4 Water System Page 5 Storage Page 6 Performance and Technical Specs Page 7 Electrical Sequence Page 8 Service Diagnosis Page 9 Service Diagnosis Page 10 Component Diagnostics Page 11 Ice Capa...

Страница 4: ...igerated stainless steel tube containing water and a slowly rotating auger When the water gets to the freezing point ice begins to form That ice is very soft and is pushed up the evaporator tube by th...

Страница 5: ...Evaporator and Auger Page 3 GEMU090 Service Cut Away View Stationary Half of Water Seal Rotating Half of Water Seal Heat Exchange Tube Coil Auger Ice Outlet Bearing Foam Insulation Water Inlet...

Страница 6: ...roller during ice making If the current is too high indicating an overload the controller will stop ice making If the current is zero indicating an auger motor failure the controller will also stop ic...

Страница 7: ...nt of ice and it enters this machine through the compression fitting in the back That leads to the float valve and reservoir When the float is not supported by water the float arm is down and the atta...

Страница 8: ...ic lined ice storage bin covered by an insulated top panel and an insulated swing open door with gasket The ice storage bin is foamed in place so the side panels are not removable Page 6 GEMU090 Servi...

Страница 9: ...uger motor restart window times there is no visible indication that the unit is in a restart mode Light Blink Information All blink once and repeat every 2 seconds Auger motor overload All blink twice...

Страница 10: ...system will stop the machine and cause the Check Water light to blink Red alerting the user of a lack of water When water has returned to the reservoir the unit will automatically restart Power interr...

Страница 11: ...ensor bypassed If auger motor still overloads replace gear reducer Compressor on auger on fan blade not turning Check fan blade for ease of rotation remove any blockage and retry Check fan motor repla...

Страница 12: ...estricted Check drain clear of restriction Ensure it has a proper air vent Pump drain slow Check for proper pump switch operation and drainage Scale on evaporator and auger Clean with scale remover Se...

Страница 13: ...but drawing high amps replace compressor Pump Switch Pump model only The pump switch activates the pump based on pressure to it from water inside the drain hose to the pump inlet It is normally open...

Страница 14: ...ooled condenser or fan blade All ice making capacities listed by Ice O Matic are for clean new machines The ice storage bin is not refrigerated it is an insulated ice chest so there is meltage A restr...

Страница 15: ...the evaporator tube That scale must be removed by use of ice machine scale remover using the process described in Maintenance Heavy scale build up will require the process to be repeated The inside of...

Страница 16: ...screws and lifting it out 8 Remove 2 orange wires from water level sensor on top of float tank 9 Rotate ice sweep counter clockwise and remove ice sweep 10 Lift and remove ice chute 11 Remove 4 screws...

Страница 17: ...ns of radial scoring 19 Remove 4 screws securing gearbox bracket to compartment base 20 Carefully lift and rest gearbox bracket against back of compartment lip 21 Remove four 5 32 allen head screws ho...

Страница 18: ...bottom of the evaporator tube until flush with the bottom of the tube Be sure it is in as straight as possible Note Do NOT touch the inner ring of the water seal with fingers or sealant Wipe off with...

Страница 19: ...ad screws holding breaker to evaporator 7 Lift breaker off and replace with a new part Note Be sure auger shaft is smooth and un damaged A dark finish at the bearing area is normal Replace auger if da...

Страница 20: ...ition 4 Loosen nut at water valve inlet and separate inlet tube from reservoir valve 5 Pull outlet hose off reservoir tank 6 Remove screws holding reservoir to unit and lift off 7 Reverse steps to rea...

Страница 21: ...an Blade or Motor 1 If equipped with drain pump follow all steps to remove pump 2 Unplug fan motor connection 3 Remove four screws holding fan motor brackets to shroud 4 Pull fan blade and motor from...

Страница 22: ...st 13 Add temporary refrigeration system access valves to the discharge and suction sides of the refrigeration system 14 Recover the refrigerant 15 Remove the four hair pins securing compressor to cha...

Страница 23: ...ucer and evaporator from unit or recover refrigerant and disconnect at evaporator Note If leaving evaporator gear reducer in unit have a helper support them while the cabinet is removed 17 Lift bin an...

Страница 24: ...Wiring Diagram...

Страница 25: ...Schematic Diagram...

Отзывы: