A purge valve is available as an option on Direct Injection and
Closed Circuit units only. This valve quickly evacuates fluid
from the process circuit, allowing faster disconnection of the
temperature controller from molds and hoses. An optional
manual purge button controls this valve on TW-1 models.
TW-2 models have a purge button on the control panel.
If this option is ordered with the Thermolator, purge control
wiring and installation of the valve on the process line outlet
of the unit is completed at the factory. You still must connect
process and cooling water inlets and outlets, as well as a sup-
ply of non-lubricated compressed air.
Remove the shipping pipe plug
from the female
connections on the back of the Thermolator.
Install an external ball valve on the cooling
water inlet of the Thermolator.
This valve is
required when a purge valve is used.
Install pipe to the rear of the Thermolator.
Use male 1
1/
4
-inch NPT piping for process connections
and male
3/
4
inch NPT piping for water connections. Pipe
and pipe threads must be clean and new. Clean threads
with solvent, removing all oil, grease and dirt. Allow the
threads to dry before proceeding.
Coat the pipe threads with thread sealant.
Follow the sealant manufacturer’s directions.
Connect the male pipe to the appropriate
female connection on the back of the unit
.
Connect cooling water lines as indicated on the previous
page. Connect process lines as indicated below. Start by
hand until the threads engage, then use a pipe wrench to
tighten the connection only enough to prevent leaks.
Do
not over-tighten!
Connect the purge
valve to the compressed
air supply.
The air pressure
should not exceed 100 psi.
UGH015/0100
Thermolator TW-1 and TW-2
O
PTIONAL
P
URGE
V
ALVE
H
OOKUPS
I
NSTALLATION
3-5
From
process
To
process
Compressed air
fitting
1
2
3
4
5
6
Summary of Contents for Thermolater vacuTrac
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