Conair W1-1.5 User Manual page 79

Alarm
ALM 08
Low Temperature
Cutout alarm
UGH017/0500
Possible cause
The hot gas bypass valve
is not working properly
(possibly stuck closed).
Process fluid flow is
insufficient.
Failed RTD or
Temperature Transmitter.
RFI interference may
have altered PLC.
Series 1 Portable Chillers, PLC Control
A
LARM
C
ONDITIONS
'
CONT
Solution
If the To Process temperature
starts to go down, the solenoid
valve is faulty. Have a certified
refrigeration technician replace
the solenoid valve.
Check for plugged pipes,
closed valves, or failed flow
switch.
See Checking the Temperature
Transmitter and RTD, in the
Troubleshooting section.
Install shielded thermocouples.
Check for high frequency dri-
ves near Chiller or two-way
radio use near Chiller. Remove
these devices.
T
ROUBLESHOOTING
D
6-15