SMC Networks HRS012-A-10 Series Service Manual page 102

HRX-MM-N007
Chapter 3 Alarm Indication and Troubleshooting
Check of power supply
1.
Check if the power supply is correct.
(1) Check if the power supply is within the specified range. Measure the power supply voltage that
is connected to the connector of the power supply cable to be connected to the Thermo-Chiller
with a tester, and check if the power supply voltage is within the specification range.
Thermo-Chiller model: HRS
- -10 (100V spec.): Single phase 100 VAC (50/60Hz), 115 VAC (60Hz)
- -20 (200V spec.): Single phase 200 VAC to 230 VAC (50/60 Hz)
(2) Check that there is no temporary voltage drop or instantaneous power supply stop caused with
the power supply.
Check the compressor operation.
2.
Leave the Thermo-Chiller in an operation stop state for 2 hours or more (to decrease the
temperature of the compressor body).
After starting Thermo-Chiller operation, judge if the compressor is operating with the compressor
operating noise and the vibration of the compressor.
(When checking vibration, use a screwdriver to touch the compressor body. Do not touch the
compressor body directly with hand as it becomes hot while it is operating.)
Ambient temperature is out of the specification range.
3.
Ambient temperature is higher than 40
specification").
External load is out of the specification range.
4.
Cooling capacity varies depending on the ambient temperature, set circulating fluid temperature,
and power supply frequency.
Please refer to the "Cooling capacity" graph shown on the Operation Manual.
Enough ventilation space has not been secured.
5.
- The Thermo-Chiller is installed too close to a wall.
- There is other equipment close to the Thermo-Chiller.
- Hot ventilated air from other equipment enters the Thermo-Chiller.
- The Thermo-Chiller is operating in a enclosed space.
(e.g. In a room without ventilation or air conditioner)
3.3 Troubleshooting
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Power supply specification
o o
C (45 C for Option G "High ambient temperature
HRS Series