H50/150 Smart – User Manual
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6.
TROUBLE SHOOTING
6.1 UNIT DOES NOT START
Check the cord; ensure it is plugged in.
Check the position of the circuit breaker on the front of the unit. It has to be in the upper
position.
Check the voltage of power supply.
NOTE: several starting attempts may be necessary on units with a Low Flow Switch
and configured to shut down with a low flow fault.
6.2 UNIT DOES NOT CIRCULATE FLUID
Check the water level in the reservoir. Fill, if necessary.
Check the instrument being cooled for restrictions in the cooling line.
Check the pump strainer.
Check the pressure gauge, adjust the relief valve as necessary.
6.3 INADEQUATE TEMPERATURE CONTROL
Verify the setpoint.
If the temperature continues to rise, make sure the instrument to be cooled heat load does not
exceed the rated specification.
Make sure the air intake and discharge are not impeded and the ambient temperature does not
35
℃
.
Make sure the condenser is free of dust and debris.
6.4 LEAKAGE
Due to vapor contained in the atmosphere, condensation may occur outside the tubes when
the temperature of the refrigeration system is lower than the ambient: specially when the
humidity of the atmosphere is high, while the set point is lower, the condensation will be more
evident. To avoid such results, a dehumidifier should be use or the temperature set higher.
