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SYMPTON

POSSIBLE CAUSE

SUGGESTED CORRECTION

Cloudy cubes

Shortage of water

See remedies for shortage
of water

Dirty water  supply

Use water softner or water filter

Accumulated impurities

Use Ice Machine cleaner

Shortage of water

Water spilling out through curtain

Check or replace curtain

Water solenoid valve not opening

Replace valve

Water leak in sump area

Locate and repair

Water flow control plugged

Remove and clean

Irregular cubes size & some cloudy

Some jets plugged

Remove jet cover and clean

Shortage of water

See shortage of water

Cubes too large

Freezing cycle too long

Review setting of DIP SWITCH keys

Decreased ice capacity

Inefficient compressor

Replace

Leaky water valve

Repair or replace

Non-condensable gas in system

Purge the system

Poor air circulation or excessive

Relocate the unit or provide for

hot location (Red-alarm LED glows) more ventilation

Overcharge of refrigerant

Correct the charge. Purge off slowly

Capillary tube partially restricted

Blow charge, add new gas & drier,
after evacuating system with
vacuum pump

Hot gas solenoid valve leaking

Replace valve

Undercharge of refrigerant

Charge to data plate indication

Discharge head pressure too high

See incorrect discharge pressure

Poor harvest

Restriction in incoming water line

Check water valve strainer and flow
control. If necessary enlarge the
flow control orifice

Water inlet valve not opening

Valve coil with open winding
Replace valve

Hot gas valve orifice restricted

Replace hot gas valve assy

Air vented holes in mold cups

Clean out holes

plugged

Discharge head pressure too low

See incorrect discharge pressure

Unit won’t harvest

Inoperative P.C.Board

Replace P.C.Board

Hot gas valve not opening

Valve coil with open winding
Replace valve

Water solenoid valve not opening

Valve coil with open winding
Replace valve

Excessive water in unit base

Water tubing leaking

Check. Tighten or replace

SERVICE DIAGNOSIS

Page 21

Содержание DX 40

Страница 1: ...DX 40 Service Manual Cod 71503041...

Страница 2: ...allation practice OPERATING INSTRUCTIONS Start up Operational checks OPERATING PRINCIPLES How it works Freezing cycle Harvest cycle Control sequence Component description ADJUSTMENT PROCEDURES Adjustm...

Страница 3: ...MIN 10 C 5 C 1 bar 10 ice making capacity 40 35 30 25 20 15 10 Kg 38 32 5 27 21 15 10 32 38 10 21 40 35 30 25 20 15 10 Kg 38 32 5 27 21 15 10 AIR COOLED MODELS WATER TEMPERATURE AMBIENT TEMPERATURE I...

Страница 4: ...hine specifications Cubes per harvest 24 medium A 15 C water temperature Electric power cons Kwh per 24 Hr Cond unit Finish Comp HP Stainless stell 3 8 15 Kg Dimensions HEIGHT 1720 mm WIDTH 380 mm DEP...

Страница 5: ...es freely 7 Check that the compressor fits snugly onto all its mounting pads 8 Use clean damp cloth to wipe the surfaces inside the storage bin and the outside of the cabinet GENERAL INFORMATION AND I...

Страница 6: ...e and the unit If water contains a high level of impurities it is advisable to consider the use of an appropriate water filter or conditioner WATER DRAIN The recommended drain tube is a plastic or fle...

Страница 7: ...ency serving him G INSTALLATION PRACTICE 1 Hand shut off valve 2 Water filter 3 Water supply line flexible hose 4 3 4 male fitting 5 Vented drain 6 Open trapped vented drain 7 Drain fitting 8 Main swi...

Страница 8: ...pressure below the Minimum value of 1 bar 14 psig 3 Any clogging situation in the water circuit like the inlet water strainer and or the flow control D At completion of the water filling phase 5minute...

Страница 9: ...ontrolthetem perature of its probe progressively rises to reach 4 5 C 40 F and at this point the ice machine restarts to initiate a new freezing cycle with the simultaneous extinguishing of the 3rd RE...

Страница 10: ...st to avoid to overfill the ice bucket when left in the dispensing compartment The yellow LED located beside the green one is lighted ON while the auger motor is energized NOTE The CUT IN RANGE OF THE...

Страница 11: ...reezes into ice the rest of it cascades by gravity into the sump assembly below for recirculation FREEZING CYCLE The hot gas refrigerant discharged out from the compressor Fig B reaches the condenser...

Страница 12: ...Page 11...

Страница 13: ...5 to 45 minutes the defrost cycle starts DIP SWITCH 1 2 3 4 5 6 7 8 9 10 Air Cooled ON OFF OFF OFF ON OFF ON ON ON OFF Water cooled ON OFF OFF ON OFF OFF ON ON ON OFF TAB A DIP SWITCH KEYS FACTORY SET...

Страница 14: ...s ON OFF Evaporator Sensor Ice Level Sensor HARVEST Water Filling Phase Electrical components Loads ON OFF Compressor Water Pump Fan Motor Air cooled only Hot Gas Valve Water Inlet Valve Water drain v...

Страница 15: ...OMPONENTS DESCRIPTION A EVAPORATOR TEMPERATURE SENSOR The evaporator temperature sensor probe locatedincontactwiththeevaporatorserpentine detects the dropping of the evaporator tempera ture during the...

Страница 16: ...S KEY MUST BE SET IN OFF POSITION ATTENTION The check up of the P C BOARD output must be performed in averyshorttimeinordertoavoidfrequent start and stop every few seconds of the electricalcomponentsw...

Страница 17: ...il 8 9 DELTA T C ON ON 1 OFF ON 1 5 ON OFF 2 OFF OFF 2 5 TAB D ICE LEVEL SENSOR CONTROL TEMPERATURE RANGE ACCORDING TO THE DIP SWITCH SETTING COMBINATIONS Locatedonthehotgasline thisvalveisenergized t...

Страница 18: ...on the front of the P C Board 2 Take note of the combination of the DIP SWITCH KEYS 3 4 5 6 and 7 and check the corrisponding length of freezing cycle 3rd phase as shown on Table C 3 Change the same D...

Страница 19: ...OTOR C COMPRESSOR MOTOR D PUMP E WATER INPUT EL VALVE F DEFROST EL VALVE G AUGER GEAR MOTOR H BIN TEMP PROBE I EVAPORATOR PROBE L ICE PHOTOSWITCHES M ELECTRONIC CARD O FAN PRESSURE SWITCH P ANTI STRIP...

Страница 20: ...MOTOR C COMPRESSOR MOTOR D PUMP E WATER INPUT EL VALVE F DEFROST EL VALVE G AUGER GEAR MOTOR H BIN TEMP PROBE I EVAPORATOR PROBE L ICE PHOTOSWITCHES M ELECTRONIC CARD O MAX PRESSURE SWITCH P ANTI STRI...

Страница 21: ...Fan motor doesn t run during Replace fan motor freezing Check for correct operation of pressure control Cut in at 10 bar 140 psi Hot gas valve open during freezing Replace hot gas valve Water inlet va...

Страница 22: ...more ventilation Overcharge of refrigerant Correct the charge Purge off slowly Capillary tube partially restricted Blow charge add new gas drier after evacuating system with vacuum pump Hot gas soleno...

Страница 23: ...hine and fan motor OFF on aircooledmodels cleancondenserusingvacuum cleaner whisk broom or non metallic brush 5 Check for water leaks and tighten drain line connections Pour water down bin drain line...

Страница 24: ...rage bin REMEMBER To prevent the accumulation of undesirable bacteria it is necessary to sanitize the interior of the storage bin with an anti algae disinfectant solution every week WARNING The Ice Ma...

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