Specifications

Actual temperature of water supplied to the mold is
higher than the setpoint deviation limit allows.
1. High deviation temperature is set too low. Increase.
2. Water has stopped flowing between supply outlet and
return inlet. Check for plugged pipe or failed cooling
valve.
3. The heater contact failed. Replace the contactor.
4. The heater and lines may be too
large for this application.
Actual temperature of water supplied to
the mold is higher than the programmed
190˚ F safety limit.
1. Water has stopped flowing between supply outlet and
return inlet. Check for closed valve or plugged line.
2. The heater contactor failed. Replace contactor.
Actual temperature of water supplied to
the mold is below the programmed 20˚ F
safety limit.
1. The cooling valve is stuck open. Clean valve.
2. The heater has failed. Check for a bad heating element,
or a heater contact that failed in the open position.
The incoming power is out of phase. A
leg may have failed or is disconnected.
1. The pump is rotating in the wrong direction. Reverse any
two leads on the power connection.
2. Check fuses or circuits at the main power supply.
The return line temperature probe failed.
Check for loose connections, or replace.
The supply line temperature probe failed.
Check for loose connections, or replace.
The pump fuse failed.
Replace the fuse on the motherboard.
NOTE: See the Thermolator User Guide for additional alarm mes-
sages regarding fuses and controller errors.
TROUBLESHOOTING
Shut down alarms
The Thermolator has shut down automatically to prevent
damage to equipment or personnel. To resume normal
operation, press , fix the problem, then press .
The pump overload has tripped. Contact is open.
1. Verify that the correct voltage is supplied to the motor.
2. Water flow may be more than the pump can handle.
Check current draw against motor rating. Decrease flow
as needed.
The supply water level is low.
1.Verify that the water supply is turned on.
NOTE: The low water pressure alarm does not require manual
reset. It will reset automatically when the water level is sufficient.
The actual temperature of water supplied to the mold
exceeds the 190˚ F temperature safety switch limit.
1. The unit is not running. Start the Thermolator.
2. Water has stopped flowing between supply outlet and
return inlet. Check for closed valve or plugged line.
3. The heater contactor failed. Replace contactor.
If there is a problem, the Thermolator
®
activates the red Alarm light
and changes the RUN/STOP light from green to flashing red.
Press to silence the optional audible alarm.
Check the indicator lights and messages
to help determine the cause of the problem.
Warning alarms
The Thermolator continues operating, but this problem
could lead to a shutdown condition if not corrected.
Actual temperature of water supplied to the mold is
lower than the setpoint deviation limit allows.
1. Low deviation temperature is set too low. Increase.
2. The heater failed. Check for a bad heating element or a
heater contact that failed in the open position.
3. The cooling valve is stuck open. Clean valve as needed.
Stop Run
WARNING: Before servicing the Thermolator
®
Allow the unit to cool to below 100˚ F. Disconnect and lockout
the main power source. Disconnect water and air supply lines.
!
1
2
Low Deviation
High Deviation
SPI Communication
FUS
002
PbS
Err
Pbr
Err
Hi
SAF
Lo
SAF
PHS
Err
Pump
Pump
High Temp. Safety
Low Water Pressure
QCH006/1197 © 1997
Positive/Negative Water
Temperature Controller
with TW-2 Microprocessor
Quick Card
Thermolator
®
vacuTrac
The Conair Group, Inc.
One Conair Drive
Pittsburgh, PA 15202
Phone: [phone]
Fax: [phone]
Basic
Operation
Troubleshooting
Instant Access Parts
& Service:
[phone]
[phone]
www.conairnet.com