Conair Thermolator TW-1 User Manual page 80

TW-1, TW-2
C S
ONTROL
D A
OWN LARMS
Alarm
Lo
Actual temperature
of water supplied to
the process is below
the programmed
20° F safety limit.
Pbr
The thermocouple
in the process
return line failed.
PbS
The thermocouple
in the process
supply line failed.
6-12
T
ROUBLESHOOTING
The Thermolator has detected a problem that could lead to equip-
ment damage or personal injury if it is not corrected.
u The Alarm LED lights and the STOP/RUN LED flashes red.
HUT
u The Thermolator automatically shuts down.
u The control displays a red LED or alarm code indicating the
source of the problem.
Possible cause
The cooling valve is stuck
SAF
open.
The heater failed.
The thermocouple is
Err
loose.
The thermocouple failed.
The thermocouple is
Err
loose.
The thermocouple failed.
Thermolator TW Series
Solution
Disassemble the cooling valve
and check for particles block-
ing the valve seat. Check the
valve seat for excessive wear.
Replace parts as required using
a valve repair kit. See
Repairing Solenoid Valves,
Section 6.
Check for a bad heating
element, or a heater contactor
that failed in the open position.
See Replacing the Heater
Contactor and Replacing
Heater Elements, Section 6.
Check for a loose thermocou-
ple or loose wire connections
to the thermocouple.
Check the thermocouple and
replace if necessary. See
Checking and Replacing
Thermocouples, Section 6.
Check for a loose thermocou-
ple or loose wire connections
to the thermocouple.
Check the thermocouple and
replace if necessary. See
Checking and Replacing
Thermocouples, Section 6.
UGH025-0504