iom-cliv-cf-eng
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45
Troubleshooting Chart
Problem
Possible causes
Possible corrective actions
Motor overload
relays or circuit
breakers open.
Voltage unbalance or out of range.
Correct power supply.
Faulty or grounded wiring on motor.
Check the electrical circuit for possible problems. Then re-
place the compressor.
Loose power wiring or faulty
contactors.
Check all connections and tighten them, if necessary replace
contactors.
High condenser temperature.
See corrective steps for high discharge pressure.
Compressor
thermal protection
switch open.
Operation beyond design conditions.
Correct to bring conditions within allowable limits.
Voltage range or unbalance.
Check and correct.
High superheat.
Set correct superheat.
Compressor mechanical failure.
Check for possible problem. Then replace the compressor.
Short cycling.
Check and stabilize load or correct control settings for the
application.
Compressor oil
level too high or
too low.
Low oil level.
Check superheat, if necessary add oil.
Insufficient water flow - level too high.
Correct the flow, check the superheat.
Solenoid valve return oil not open.
Check circuit, if necessary replace solenoid valve.
Short cycling.
Check and stabilize load and correct control settings for
application.
Excess liquid in crankcase - level too high.
Check crankcase heater. Check operation of liquid line
solenoid value.
Level too high with compressor operation.
Confirm superheat is correct, remove oil.
Operation or selection of expansion value.
Confirm superheat at minimum and maximum load conditions.
Compressor mechanical problems.
Check for possible problem. Then replace compressor.
Incorrect oil for application.
Check.
Oil collapse in remote piping.
Check refrigerant piping if correction is necessary.
Loose fitting in oil line.
Repair.
Compressor stag-
ing intervals too
short.
The control band is not properly adjusted.
Adjust the driver settings for the application.
Water temperature sensor failure.
Replace.
Insufficient water flow.
Correct flow.
Rapid temperature or flow changes.
Stabilize load.
Oversized equipment.
Evaluate equipment selection.
Light loads.
Check and adjust load.
The unit will not
operate.
Inadequate voltage.
Check the voltage and correct it.
Reset switch is off.
Switch on.
No water flow in the system.
Purge the system.
Water flow is reversed.
Check water direction.
Equipment runs,
but does not cool
sufficiently.
The set temperature value is an incorrect
setting.
Establish values.
Equipment does not have enough refrigerant.
Check the data sheet and check the system for leaks.
High condensing temperature.
Check condenser and repair.
Equipment does not have sufficient water
flow.
Check technical data, check filter in water line and adjust flow
if necessary.
The fan does not
work.
No supply voltage.
Check electrical circuit (line down).
Motor defective.
Contact the manufacturer.
Motor thermal protection switch open.
Check operating conditions, if necessary contact the
manufacturer.
Содержание Clima-Flex CLIV Series
Страница 13: ...iom cliv cf eng www clima flex com 13 Figure 8 Refrigeration Schematics CLIV Refrigeration Schematics...
Страница 14: ...iom cliv cf eng www clima flex com 14 Refrigeration Schematics Figure 9 CLIV heat pump cooling scheme...
Страница 15: ...iom cliv cf eng www clima flex com 15 Figure 10 CLIV Dimensions and Weights Packaged Units...
Страница 16: ...iom cliv cf eng www clima flex com 16 Dimensions and Weights Packaged Units Figure 11 CLIV heat pump...
Страница 21: ...iom cliv cf eng www clima flex com 21 Electrical Data...
Страница 23: ...iom cliv cf eng www clima flex com 23 Electrical Data...
Страница 46: ...iom cliv cf eng www clima flex com...