SMC Networks HRS012-A-10 Series Service Manual page 74

HRX-MM-N007
Chapter 3 Alarm Indication and Troubleshooting
Ambient temperature is out of the specification range.
1.
Ambient temperature is higher than 40
specification").
External load is out of the specification range.
2.
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.
3. Enough ventilation space has not been secured.
- 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 an enclosed space.
(e.g. In a room without ventilation or air conditioner)
The dustproof filter is too dusty.
4.
Dustproof filter on the front side of the
Thermo-Chiller or the fin of the air-cooled
condenser inside is contaminated.
Check the rotation of the fan.
5.
Check visually that the fan rotates right after starting
the Thermo-Chiller operation from the stopped state.
(Depending on the installation environment, the fan
may stop rotating for few seconds after starting the
product operation, which is normal. If the fan does
not rotate after starting the operation, this is not
normal.)
3.3 Troubleshooting
3-58
o o
C (45 C for Option G "High ambient temperature
Fig. 3.3-33 An air-cooled condenser and
a dustproof filter
Fig. 3.3-34 Fan position
HRS Series