SMC Networks HRS012-A-10 Series User Manual

HRX-MM-N007
Chapter 3 Alarm Indication and Troubleshooting
3.3 Troubleshooting HRS Series
3-48
AL11: Low compressor intake temp.
<Detection method> This alarm goes off when the compressor intake temperature sensor detects -15
o
C
or less.
IS AL04 being generated?
Y
N
Is AL24 being generated?
Y
N
Low compressor intake
temp.
AL11
2.
Is the flow rate of
the circulating fluid less
than 5 L/min?
3.
Check the pump
performance.
Y
Connect a by-pass piping.
4.
Check the compressor intake
temp. sensor.
5.
Check the compressor
intake temp. sensor after
replacement.
7.
After stopping the power
supply, does the same alarm go off
again when the chiller is
restarted?
Please contact SMC or distributor.
N
Y
Normal
Error
N
Normal
Error
Error
Normal
1.
Is cooling load larger
than the heating capacity
being applied to the
Thermo-Chiller?
This system cannot be used.
Y
N
Refer to section "AL04:
Circulating fluid discharge
temp. drop".
Refer to section "AL24:
Compressor intake temp.
6.
Is the circulating fluid
contaminated?
Y
N
Replace the pump.
See section "4.5.3
Replacement of pump
(For standard pump)", and
section "4.5.4
Replacement of high
pressure pump".
Replace the main board.
See section "4.5.16
Replacement of main board
& communication board".
Clean the circulating fluid circuit.
See a document No. HRX-MM-S060 for
cleaning instructions.
If contamination with the circulating fluid
circuit cannot be removed by cleaning,
the heat exchanger, which is an
evaporator and a part of the refrigerant
circuit, needs to be replaced. Only a
specialized operator is allowed to handle
the refrigerant circuit.
See document No. HRX-MM-Q014 for
replacement.
Electronic expansion valve,
which is a part of the
refrigerant circuit, needs to be
replaced. Only a specialized
operator is allowed to handle
the refrigerant circuit.
See document No. HRX-MM-
Q016 for replacement.

SMC Networks HRS012-A-10 Series Specifications

General

Brand	SMC Networks
Model	HRS012-A-10 Series
Category	Chiller
Language	English