Service manual

HEC-Series Service Manual
MAINTENANCE
10/21/01
7-8
Preventive Maintenance Program
Model # ___________________ Serial # ____________________ Date _____________
Customer/Address ___________________________________________________________
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Mgr. Name ______________________ Service Tech Name __________________________
The following service performed and checked:
Last maintenance performed (approx. date) ___/___/___
Scale condition of water tank & tubes (good - fair - poor)
All drains freely draining (water tank, drip pan, ice bin)
Water distributors cleaned
Ice machine cleaner circulated through system
AC condenser clean (if applicable)
Voltage at machine (actual reading) L1-L2 ______, L2-L3______, L1-L3______
Compressor amps (halfway through the freeze cycle) L1______ L2______ L3______
Cutter motor amps (cutting ice) _____
Water pump amps _____
AC condenser motor amps (if applicable) _____
Crankcase heater heating
Refrigerant leak (okay - high - low)
Leak checked system ______ leaks found & repaired
Compressor oil level (i.e, 1/4 - 1/2 - 3/4 - low - high)
Gear reducer oil (okay - low)
PSIG, low pressure switch set @ 20 psi
PSIG, high pressure switch set @ 300 psi
Bin stat(s) installed and operate properly
Make-up water float valve adjusted okay
Adjustable blowdown adjusted for clear ice
°F suction line superheat at TXV (after at least two minutes into the freeze) _____°F
CYL__________ CRU________ Suction PSIG at end of freeze
CYL_____/____ CRU____/____ Suction PSIG during harvest (high/low)
______ PSIG, CPR valve adjustment
CYL__________ CRU________ Discharge PSIG at end of freeze
______°F/°C at machine ______ °F/°C outside ambient (at condenser if applicable)
______ °F/°C make-up water temperature
CYL ______ CRU _____ Freeze cycle time (minutes)
CYL ______ CRU _____ Harvest cycle time (minutes)
CYL ______ CRU _____ First ice out (seconds)
CYL ______ CRU _____ All ice out (seconds)
CYL ______ CRU _____ Pounds of ice per cycle
Capacity check: ice # per cycle X 1440 = _________ lbs. (24 hr. capacity)
total cycle time (min) ______
Remarks:___________________________________________________________________
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