Icematic N21 Service Manual
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Icematic N21 Service Manual

Icematic N21 Service Manual

Automatic cubers
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N21
AUTOMATIC CUBERS
OUR SYSTEMS CONFORM TO EC STANDARD 73/23 CEE - 89/336
SERVICE MANUAL
Cod. 71503341/0 - 3/00 - GB

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Summary of Contents for Icematic N21

  • Page 1 AUTOMATIC CUBERS OUR SYSTEMS CONFORM TO EC STANDARD 73/23 CEE - 89/336 SERVICE MANUAL Cod. 71503341/0 - 3/00 - GB...
  • Page 2 32 °C et température eau 21 °C - mit Raumtemperature 32 °C und Wassertemperatur 21 °C SPECIFICHE TECNICHE - TECHNICAL SPECIFICATIONS SPECIFICATIONS TECHNIQUES - TECHNISCHE ANGABEN N 21 N21 W Alimentazione elettrica - Electric voltage - Alimentation électrique - Normale Netzpannung 220-240/50/1 -10÷+6% Condensazione - Condensation - Condensation - Kühlung...

  • Page 3: General Information And Installation

    GENERAL INFORMATION AND 5. Remove all internal support packing and masking tape. INSTALLATION 6. Check that refrigerant lines do not rub against or touch other lines or surfaces, and that then fan blades move A. INTRODUCTION freely. 7. Check that the compressor fits snugly onto all its This manual provides the specification and the step-by- mounting pads.

  • Page 4: Electrical Connections

    2. Level the Icemaker in both the left to right and front to Since water is the most important single ingredient in pro- rear directions by means of the adjustable legs. ducing ice you cannot emphasize too much the three items listed above.

  • Page 5: Final Checklist

    F. FINAL CHECK LIST Have the bolts holding the compressor down been checked to ensure that the compressor is snugly fit- ted onto the mounting pads? Is the unit in a room where ambient temperatures are within a minimum of 10°C (50°F) even in winter Check all refrigerant lines and conduit lines to guard months?

  • Page 6: Operational Checks

    OPERATING INSTRUCTIONS OPERATIONAL CHECKS C. At completion of the water filling phase the unit initiate automatically the first freezing cycle with the start up of START UP (Fig.1): COMPRESSOR After having correctly installed the ice maker and com- WATER PUMP pleted the plumbing and electrical connections, perform FAN MOTOR (in air cooled version) the following "Start-up"...
  • Page 7 I. Check the texture of ice cubes just released. after 30 seconds, 1 minute at the most, namely when They have to be of the right size with a thickness of the control bulb temperature drops to reach + 1°C. about 7÷8 mm.

  • Page 8: Principle Of Operation

    PRINCIPLE OF OPERATION The refriferant head pressure, in the course of the freez- ing cycle, ranges between 9/7 bars. On the air cooled version, the FAN MOTOR. Is working In the cube ice makers the water used to make the ice is during freezing cycle.
  • Page 9 The incoming water, passing through the water inlet valve BEGINNING FREEZE and in its incorporated flow control (outlet), runs over the Electrical components (Loads) ..evaporator platen and then flows by gravity through the Compressor ........dribbler holes down into the sump/reservoir. Fan motor ...........
  • Page 10 Electric Controls....... B. BIN THERMOSTAT Conctats 3-4 evaporator thermostat... The bin thermostat, which has its sensing bulb downward Conctats 3-2 evaporator thermostat... into the storage bin, shuts-OFF automatically the icemak- Bin thermostat ........er when the ice storage bin is filled and ice contacts its Conctats COM-NO timer microswitch bulb.

  • Page 11: Water Pump

    The water pumped, is sprayed throught its nozzles in L. FAN MOTOR (Air cooled version) each individual mold or onto each evaporator tip to be The fan motor, operates during the freezing cycle to draw frozen into ice. cooling air through the condenser fins so to keep the con- densing pressure between the 9/7 bars values.

  • Page 12: Service Diagnosis

    SERVICE DIAGNOSIS SYMPTOM POSSIBLE CAUSE SUGGESTED CORRECTION Unit will not run Main switch in OFF position Turn switch to ON position Loose electrical connections Check wiring Inoperative bin thermostat Replace thermostat Compressor cycles Low voltage Check circuit for overloading intermittently Check vltage at the supply to the building.
  • Page 13 SERVICE DIAGNOSIS SYMPTOM POSSIBLE CAUSE SUGGESTED CORRECTION Irregular cubes Some jets plugged Remove jet cover and clean size & some cloudy Shortage of water See shortage of water Unit not level Level as required Cubes too large Freezing cycle too long Adjust evap.

  • Page 14: Maintenance And Cleaning Instructions

    MAINTENANCE AND When remove the ice cubes from its sensing bulb the unit will restart after few seconds from the defrost cycle assur- CLEANING INSTRUCTIONS ing the filling up of the water tank. A. GENERAL NOTE. It is possible tu adjust the setting temperature of the bin thermostat by slihtly turning its adjusting The periods and the procedures for maintenance and screw.
  • Page 15 Switch OFF the unit after approx. 10 minutes and flush out the rinsing water from the sump reservoir. ATENTION. In case the ice cubes are cloudy, white and have and acid taste, melt them immediately 10.Move the cleaning switch on RINSING position and by pouring on them some warn water.
  • Page 16 ELECTRIC DIAGRAM N21...

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