Specifications
Table Of Contents
- ugh015-0100.pdf
- Contents
- Introduction
- Description
- Installation
- Operation
- Maintenance
- Troubleshooting
- Before beginning
- Diagnostics
- Repair
- Checking and replacing fuses
- Resetting overloads
- Replacing the pump overload
- Replacing the motherboard
- Replacing the heater contactor
- Checking thermocouples
- Replacing thermocouples
- Repairing solenoid valves
- Replacing heater elements
- Removing the pump
- 3/4-2 Hp Pump disassembly/assembly
- 3-7.5 Hp Pump disassembly/assembly
- Appendix
- Parts/Diagrams

UGH015/0100 Thermolator TW-1 and TW-2
TROUBLESHOOTING 6-19
Reassemble the valve and other components.
Reassemble in reverse order. Seal all pipe fittings
with pipe sealant. Check that all flows are in the correct
direction. Check for leaks before resuming operation.
R
EPAIRING
S
OLENOID
VALVES
Nameplate
Cover*
Yo k e *
Housing*
7/8" Dia. Hole
for 1/2" Conduit
Solenoid Base
Sub-Assembly
0.9375-26 UNS-2A
Thread
Core (AC)
Tapped Hole in Core
0.250-28 UNF-2B
0.38 Minimum Full Thread
or
Retaining Clip*
Retaining Cap*
Sleeve*
Grounding Wire
(Not present on all constructions)
Insulating Washer
Sleeve*
Spring
Washer
*
Housing*
with Nameplate*
*Indicates Parts Supplied
in Solenoid Enclosure Kit
Alternate Construction with
Nameplate on Housing
Coil
Insulating Washer
9
*Indicates Parts Supplied
in Solenoid Enclosure Kit
Cover*
Yo k e *
7/8" Dia. Hole
for 1/2" Conduit
Solenoid Base
Sub-Assembly
0.9375-26 UNS-2A
Thread
Core (AC)
Tapped Hole in Core
0.250-28 UNF-2B
0.38 Minimum Full Thread
or
Retaining Clip*
Sleeve*
Grounding Wire
(Not present on all constructions)
Sleeve*
Coil