Matrix 0850 - Page 210

0850/0850-T1 User Manual
Matrix Machine Tool (Coventry) Limited 210 / 231
Edition: 08/2013
PV °C
SV °C
PRESSURE
Possible Cause
Low or overcharge of refrigerant.
Obstruction/leakage in the refrigeration system.
Condenser/air filters are dirty.
Poor heat dissipation.
Fan/motor failure.
Inspection
The copper pipe near the low pressure side of the compressor is warm.
Condenser fins are cold.
Check if the cooler unit’s internal temperature is too high.
Check if fan/motor is out of order.
Solution
Please contact the refrigeration service technician for faults in the
refrigeration system.
Clean the air filter and condenser regularly to improve heat dissipation.
Remove any obstructions from the air intake and exhaust.
5
Explanation
There is a fault in the compressor which is tripping out the
overload protector.
PV °C
SV °C
COMP
Possible Cause
Incorrect power voltage input.
Compressor has burnt out.
Overload protector has tripped out.
Poor heat dissipation.
Fan/motor failure.
Inspection
Check if input power voltage is correct.
Check if compressor has burnt out.
Check if overload protector has tripped out.
Check if cooler unit’s internal temperature is too high.
Fan/motor out of order.
Solution
Input the correct power voltage.
Replace burnt out compressor.
Reset the overload protector.
Improve the working environment to lower the ambient temperature and
improve ventilation.
Replace/fan/motor.
6
Explanation
The power phase input has been reversed.
PV °C
SV °C
REV
Possible Cause
Reversed phase of main power source.
Power source is single phase.
Reverse-phase relay failure.
Temperature controller failure.
Inspection
Check if the power phase input is correct.
Has the reverse-phase relay failed?
Has the temperature controller failed?
Solution
Reconnect the power cable with the correct phase.
Three phase cooling unit should be connected to a three phase power
source.
Replace faulty components.