Product Manual

8
Special Equipment Safety Features
This unit is equipped with the following safety features:
High Pressure Safety Device (Rupture Disc)
Acts as a backup safety feature. If the Pressure Control
Valve (Unloader) malfunctions, this separate high-
pressure safety device will open and relieve excess
system pressure. Repair is required.
WARNING: Rupture Disc failure
If the high-pressure safety device ever discharges
water, turn the unit off and do not use the machine.
Call Product Support at 1-800-270-0810.
Temperature Control Switch
Measures water temperature and automatically turns
burner off when temperature setting is reached. When
water temperature drops, burner automatically reignites.
Figure 1
Pump Thermal Relief Valve
This valve, on the Unloader bypass port, protects the
pump from overheating. The pump continues to work in
bypass mode when you are not spraying. If high
temperatures are developed during bypass mode, the
Thermal Relief Valve will open and discharge hot water
onto the ground, protecting the pump from overheating.
Note: One of two pumps will be on your machine.
Figure 2
Spray Gun Safety Latch
Has a built-in trigger safety latch to guard against
accidental trigger actuation.
Figure 3
High Pressure
Safety Device
Note: Shield not
shown for clarity
Pump
Thermal
Relief Valve
Cat pump
Comet
pump
00417
Safety Latch
High Temp
Limit