Temptek PTK Series, Инструкция по эксплуатации

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Page: 23
TEMPTEK, INC.
525 East Stop 18 Road Greenwood, Indiana 46142
317-887-6352 Fax: 317-881-1277
Email: service@Temptek.com
PTK Series Polyethylene Pump Tank Station with Checkmate Control System
4.3 SOLENOID VALVE SERVICE
A. Units with the optional electric water make-up system use a solenoid valve controlled by
the float switch for water make-up.
B. The operator can determine the solenoid valve requires service when the tank does not
‘make-up’ as required.
C. Generally, solenoid valves fail due to poor water quality, low water flow, or defective valve
elements.
D. The operator should follow this procedure to service the cooling solenoid valve:
1. Disengage main power supply. Follow proper lock out tag out procedures.
2. The operator must be certain all water system pressure is relieved from the
supply line.
3. If necessary, remove or open any access cover panel and set aside to gain
access to the solenoid valve.
4. Identify the retaining screw on the solenoid valve coil. Remove the screw.
Keeping all electrical connections intact, lift the coil off of the enclosure tube and
set aside.
5. Use a pair of channel lock pliers or a pipe wrench to separate the bonnet
assembly from the valve body. The plunger is “loose” inside the enclosing tube.
Be certain it is retained in the enclosure tube as the bonnet is removed.
6. Identify the diaphragm assembly. Gently remove the assembly from the valve
body.
7. Identify the mesh screen. Gently removed the mesh screen and clean or replace
as necessary. Clean the valve body.
8. Reset the mesh screen into the valve body.
9. If a new diaphragm assembly was obtained, continue with step 11. If not,
disassemble the diaphragm assembly and note component order. Clean the
valve port, plate, collar and O-ring. Once cleaned, reassemble the diaphragm.
10. Set the reassembled diaphragm assembly into the valve body. The stem should
be facing out of the valve body.
11. Inset the plunger with spring first into the enclosing tube of the top bonnet.
Holding the plunger in the enclosure tube, set the top bonnet onto the valve body
and tighten.
12. Place the coil onto the top bonnet and replace the retaining screw.
13. Open the water supply valve (if installed) to circulate water. Restart the unit.