13. Pump: A mechanical device that moves and
pressurizes fluid. [Pump oil must be changed after
first 40 hours of use, and then changed every three
months or 500 hours of use. See “Maintenance and
Repair” section for pump oil change instructions
and recommendations.]
14. Gun Hooks: Spray gun storage location.
15. Power Switch: Flip up for on.
16. Thermostat: Controls power to fuel solenoid for
firing.
17. Control Panel: Power Switch (Reference 15),
Thermostat (Reference 16) and Nozzle Storage
(Reference 18) are located on control panel.
18. Nozzle Storage: Control Panel (Reference 17) has
space for storing nozzles.
19. Fuel Filter/Water Separator: Filter in fuel line that
removes water and screens out dirt and debris from
fuel.
20. Quick Connector: Connection point on spray gun
for high pressure hose.
21. Spray Gun: Pressurized water is discharged.
22. Grip: Protected area on spray gun for additional
hold.
23. Lance Wand: Unprotected area on spray gun.
24. Power Cord Hangers: Storage location.
25. High Pressure Hose Hanger: Storage location.
26. Garden Hose Water Inlet: Connection point for
standard garden hose. Garden hoses less than
100’ in length must have a minimum inner diameter
of 5/8.” Garden hoses over 100’ in length must
have a minimum inner diameter of 3/4.”
Note: See “Parts Explosion” for additional detail.
Special Equipment Safety Features
This unit is equipped with the following safety features:
High Pressure Relief Valve
Acts as a backup safety feature. If the Pressure Control
Valve (Unloader) malfunctions, this separate high-
pressure relief valve will open and relieve excess
system pressure. Repair is required.
WARNING: Relief valve failure
If the high-pressure relief valve 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
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