HALE Silencer APS Series, Installation, Operation And Service Maintenance Manual, Page: 27 / 146

27
Section 2a: Accessories
Hale Products, Inc., May 2006, Rev-B
Accessories / Options
❑
Figure 2a-5: Thermal Relief Valve, TRV
The valve monitors the water temperature in the pump. When tempera-
tures exceed 120° F (49° C), the valve automatically OPENS. When the
temperature returns to a safe level, the valve CLOSES.
TRV-L Kit
The TRV-L kit includes a chrome panel placard with a warning light, a light
test button, and a pre-assembled wire harness. The RED light illuminates
when the TRV is open and discharging water. (See Figure 2a-5: “Thermal
Relief Valve, TRV.”) An optional buzzer, mounted on the operator panel,
provides an audible warning.