Conair W1-1.5 User Manual page 74

A
LARM
C
ONDITIONS
Alarm
ALM 03
Low Suction
Pressure alarm
6-10
T
ROUBLESHOOTING
Possible cause
No or low flow with a
failed flow switch and
RTD.
Compressor suction valve
is closed.
No load on the Chiller.
The Evaporator is fouled.
The evaporator is frozen.
There is a refrigerant
leak.
Faulty pressure transduc-
er.
Series 1 Portable Chillers, PLC Control
Solution
❐ Check To Process and From
Process valves to see if they
are open.
❐ Check Flow switch and
RTD. Replace as needed.
Open valve.
Compare process load to
required load. Chiller may be
oversized.
Clean Evaporator. See
Cleaning the Evaporator or
Water-cooled Condenser, in the
Maintenance section.
❐ Check flow switch, RTD,
temperature transmitter and
low temperature cutout on
temperature controller.
Replace as needed.
❐ Check PLC control for
proper percent ethylene gly-
col or propylene glycol solu-
tion. Change percent glycol
setpoint, if needed.
Check for oil in chiller cabinet
and bubbles in refrigerant sight
glass. Consult Conair Service
for repair.
See Checking the Pressure
Transducer, in the
Troubleshooting section.
UGH017/0500