Pressure Relief Procedure - Graco 3325 HA-DD Operation - Repair - Parts

Pressure Relief Procedure

Pressure Relief Procedure
Follow the Pressure Relief Procedure whenever
you see this symbol.
This equipment stays pressurized until pressure is
manually relieved. To help prevent serious injury from
pressurized fluid, such as skin injection, splashing
fluid and moving parts, follow the Pressure Relief
Procedure when you stop spraying and before
cleaning, checking, or servicing the equipment.
1. Engage trigger lock.
2. Turn unit off.
3. Shut off water supply. Disconnect from water.
4. Disengage trigger lock.
5. Trigger gun to relieve pressure.
6. Engage trigger lock.
7. If you suspect the nozzle or hose is clogged or that
pressure has not been fully relieved:
a. VERY SLOWLY dosconnect the hose from the
washer to relieve pressure.
b. Disconnect hose, gun, and nozzle completely.
c. Clear the obstruction in the hose or nozzle.
10
Thermal Relief Valve
To ensure the water temperature does not exceed
acceptable levels, never allow the unit to operate
continuously in bypass mode (unit running with gun
trigger closed) for more than three minutes.
All units have a thermal relief valve to protect the pump.
It may begin to open and release water if the water
temperature in the pump has exceeded 140°F (60°C).
This will allow fresh, cool water to enter the system.
3A6588B