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Corporate Office: 724.584.5500
Instant Access 24/7 (Parts and Service): 800.458.1960
Parts and Service
:
814.437.6861
81
Cleaning the Operator
Interface
Use of abrasive cleaners or solvents may damage the
window. Do not scrub or use brushes. To clean the
display window:
1.
Disconnect power from the terminal at the
power source.
2.
Using a clean sponge or a soft cloth, clean the
display with a mild soap or detergent. If paint or
grease splash is present, remove before drying
by rubbing lightly with isopropyl alcohol.
Afterward, provide a final wash using a mild
soap or detergent solution. Rinse with clean
water.
3.
Dry the display with a chamois or moist cellulose
sponge to avoid water spots.
General Troubleshooting
Problem
Possible Cause
Remedy
Compressor will not
start
Three-phase power monitor tripped
Check correct phasing of incoming power
Compressor overload
Check supply voltage, amperage of each leg,
contactor and wiring, overload set point
Compressor contactor
Replace if faulty
PLC output card
Replace if faulty
Compressor failure
Contact Conair’s Service Department for
assistance
Low refrigerant
pressure
Low refrigerant charge
Contact refrigeration service technician
Refrigerant leak
Contact refrigeration service technician
Compressor suction service valve partially or fully
closed
Open valve all the way
Low refrigerant pressure sensor
Replace if faulty
PLC input card
Replace if faulty
Fouled evaporator flow
Clean evaporator inlet strainer. If the
evaporator is plugged, clean if possible or
replace if necessary.
Low evaporator flow
Check evaporator pumping system
High refrigerant
pressure
Plugged condenser
Clean condenser
Insufficient condenser water flow (ESEW only)
Make sure chiller is installed in accordance
with recommendations in this manual
High condenser water temperature (ESEW only)
Maximum temperature is 95°F
Condenser water regulating valve (ESEW only)
Replace if faulty
Compressor discharge service valve is fully or partially
closed
Open valve all the way
Refrigerant circuit overcharged
Contact refrigeration service technician
High refrigerant pressure sensor
Replace if faulty
PLC input card
Replace if faulty
Freezestat
Low flow through evaporator
Adjust flow to proper level
Freezestat control
Check for proper setting and replace if faulty
Temperature sensor
Replace if faulty