Pro Refrigeration CHILSTAR Series, Руководство по эксплуатации

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Packaged Glycol Chiller Systems | III
PROBLEM POSSIBLE CAUSES CORRECTIVE STEPS
compressor will not run A Main Switch / Circuit Breaker Open A Reset Switch / Circuit Breaker
B Fuse Blown B Check Electrical Circuits and Motor Windings
C Thermal Overloads Tripped for shorts or grounds. Investigate for possible over-
D Defective Contactor or Coil loading. Replace Fuse or reset Circuit Breaker after
E System shut down by Safety Device fault is corrected.
F No Cooling is required C Reset any tripped thermal overloads, Check unit
G Liquid Line solenoid will not open closely when unit comes online.
H Motor Electrical Trouble D Repair or replace coil
I Loose Wiring E Determine Type and Cause of shut down and
J Circulation Pump Not Running correct before resetting.
F Wait until Unit calls for Cooling. Check setting of
Thermostat. Check the Temperature of Glycol Solution.
G Check for Voltage at Solenoid Coil, replace coil.
H Check motor for opens, short circuit, or burnout.
I Check all wire junctions, tighten loose connections.
J Check overload relay on circulation Pump
Compressor noisy or vibrating A Liquid Refrigerant Flooding to Crankcase A Check Superheat Setting of Expansion Valve(s).
B Worn Compressor Check the Glycol Solution Percentage, make
certain that evaporator is not freezing up.
B Replace Compressor
High Discharge Pressure A Condenser Water Supply is insufficient or A Adjust Water Regulating Valve, investigate ways to
temperature is too high. increase water supply.
B Fouled Condenser (Water) B clean
Fouled Cooling Tower C Purge out non-condensables, reclaim refrigerant
Dirty Condenser Fin or Tube Surface (Air) and recharge with new refrigerant.
C Non-Condensables in System D Remove excess refrigerant charge
D System overcharged with Refrigerant E Open Valve
E Discharge Valve Partially closed F Check Condenser Rating Tables
F High Ambient Conditions
Low Discharge Pressure A Faulty Condenser Fan Control A Check Fan Controls
B Suction Shut off partially closed B Open Valve
C C Adjust Water Regulating Valve or Water Supply
D D See "Low Suction Pressure" below
E Insufficient Refrigerant Charge E Check for leaks, repair & recharge
F Low Ambient Conditions F Check Condenser rating tables
Low Suction Pressure A Lack of Refrigerant A Check for leaks, repair, & recharge.
B Clogged Liquid Line Filter Drier B Replace
C Expansion Valve malfunction C Check Superheat Setting, adjust or replace.
D Condensing Temperature too low D Check means of regulating Condensing Temperature
E Compressor will not unload E See "Compressor will not unload" section below
F Insufficient Flow through evaporator F Check circulation pump rotation and motor amperage.
G Not enough Glycol Concentration or Glycol Make sure Gate Valves on Evaporator inlet & outlet
Level in Tank is too Low. are completely open.
7-5 G Add required Glycol to System
High Suction Pressure A Excessive Load A Reduce Load or add additional cooling equipment
B Expansion Valve malfunction B Check Superheat of TXV, replace if necessary
Compressor will not unload A Unloader mechanism defective A Replace mechanism
B Faulty Thermostat or Pressure Control B Check settings of device, replace if necessary
Oil Alarm A Excessive Liquid Refrigerant in crankcase A Check crankcase Heater. Adjust TXV superheat.
B Oil Failure Control defective B Replace
C Worn Oil Pump C Replace Oil Pump.
D Stuck reversing gear on oil pump D Reverse Rotation of Compressor
E Worn Bearings E Replace Compressor
F Low Oil Level F Check System for leaks, repair, & add Oil.
G Pump Housing Gasket leaks G Replace Gasket
Motor Overload Fault, tripped Circuit A Low Voltage during high load conditions A Check for excessive voltage drop
Breaker, or Blown Fuses B Grounded wiring in motor or power circuit B Check wiring and repair fault.
C Loose power wiring C Check wiring and tighten any loose connections
D High Condensing Pressure D See corrective steps for "High Discharge Pressure"
E Voltage unbalance E Check Power Supply. Contact Power Company. Do not
F High Ambient at bi-metal Overload Relay Operate until fault is corrected.
F Provide Ventilation to Motor Controls
Compressor Thermal Switch Open A Operating out of design conditions A Add facilities to prevent system from operating out of
B Discharge Valve Partially closed design conditions.
C Blown Valve Plate Gasket B Open
D Power Line Fault C Replace Gasket
D Check Power Supply. Contact Power Company. Do not
Operate until fault is corrected.
Low Pressure Freeze Alarm A Wrong Pump Rotation A Reverse Rotation of circulation pump (CW from motor end)
B Evaporator Freeze Up B Check Glycol Percentage. Must be at least 20 F below
C Incorrect Freeze Point setpoint thermostat set point.
C Adjust freeze point for application, consult factory.