105
Section 3 - operation
3.21 pressure washer operation
The pressure washer pump is powered by the
hydraulic system and mounted to the driver side
chassis. It provides up to 2500 psi (172 BAR) to
the handheld spray gun. The pressure hose and
spray gun connect to a high pressure disconnect
fitting on the pump and are stored in the tool box.
A manually operated ON/OFF valve and a flow
control valve supply pressurized hydraulic fluid to
the hydraulic motor that powers the pump. The
flow control valve is equipped with colored rings
that indicate the valve setting for reference.
Water is provided to the pressure washer by the
water system pressure pump. Ball valves on the
water lines are used to direct water to the cutter
nozzles or pressure washer.
Always make sure to close the pressure washer
hydraulic and water ball valves whenever it is not
being used.
Pressure Washer Pump & Water Supply Valve
Clean Water Pressure Pump & Supply Valves
1.
Pressure Washer Water Supply Valve
4.
Water System Pressure Pump
2.
Wand Pressure Gauge
5.
Pressure Pump Supply Valve
3.
Manual Bypass Valve
6.
Cutter Nozzle Water Supply Valve
1
3
2
5
4
6
Use the following procedures to activate or shut-
down the pressure washer.
Activating The Pressure Washer:
1. Make sure the truck is parked on level ground
with the parking brake set and the engine at
idle.
2. Verify that the pressure gauge on the pump
indicates 0 pressure, then attach the pressure
hose and gun to the quick disconnect fitting.
3. Make sure the truck is in WORK mode with the
hydraulic system activated.
4. Verify that the clean water supply valve is open
and raise the engine speed to 1000 RPM.
5. Activate the pressure pump. Then verify wa-
ter pump operation and pressure 50-60 PSI
(2.8-4.1 Bar).
6. Open the pressure washer water supply valve
and close the cutter nozzle supply valve.
Содержание RH7500
Страница 1: ...RH7500 Operations Manual ...
Страница 2: ......
Страница 6: ...6 NOTES ...
Страница 10: ...10 NOTES ...
Страница 19: ...19 Section 1 Safety Information ...
Страница 20: ...20 NOTES ...
Страница 108: ...108 NOTES ...
Страница 150: ...150 NOTES ...
Страница 155: ...155 Appendix 3 Tools Spare Parts ...
Страница 156: ...156 Appendix 3 Tools Spare Parts ...
Страница 158: ...158 NOTES ...
Страница 163: ......