Temperature Control Units : With ‘LS’ Series Instrument
Page: 73
TEMPTEK, INC.
525 East Stop 18 Road Greenwood, Indiana 46142
317-887-6352 Fax: 317-881-1277
Service Department Fax: 317-885-8683
www.Temptek.com
8.4
OPERATION OF MOLD PURGE
A.
Temptek supplies an optional MOLD PURGE kit for temperature control
units. The mold purge kit contains several solenoid valves and check
valves. When activated and supplied with compressed air, the mold purge
kit will expel process water from the mold to the central water supply or
drain. Temptek mold purge kits are supplied as a factory installed option or
a field retrofitted kit.
B.
The operation of the mold purge is as follows (see illustration)
1.
Stop the pump, maintain electrical
power to unit.
2.
Close the water supply ball valve.
3.
Connect a regulated air supply
to mold purge compressed air
connection.
Note: Air supply should be
regulated approximately 10 PSI
above drain line pressure.
4.
Activate mold purge with button
located on electrical cabinet.
5.
When water is purged disconnect air
supply.
6.
Depress and hold vent button
(approximately 30 seconds to release
air pressure.
7.
Disconnect power to unit
.
LINE TO DRAIN
CHECK VALVE
Prevents compressed air from purging
unit
TO PROCESS CONNECTION
CHECK VALVE
Prevents water bleed to air line during
normal run cycle
COMPRESSED AIR
CONNECTION
SOLENOID VALVE
Opens to allow compressed air to enter
during mold purge operation
SOLENOID VALVE
Opens to purge water to drain
DRAIN CONNECTION
AVT VALVE
Closed to prevent purge of unit
MOLD PURGE SWITCH
Turns on/off mold purge feature. Located on
electrical cabinet
WATER SUPPLY
CONNECTION
Valve must be closed during mold purge
operation
FROM PROCESS CONNECTION
Содержание VETERAN LS Series
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