Graco 25M404, Instructions Manual

Page: 9 / 32

Installation
3A6711C 9
Installation
Pressure Relief Procedure
Follow the Pressure Relief Procedure
whenever you see this symbol.
1. Turn off power supply to the pump or
close fluid shut off valve (B).
2. Open nozzle.
3. Trigger the metered dispense valve into
a waste container to relieve pressure.
4. Open any bleed-type master air valves
and fluid drain valves in the system.
5. Leave the drain valve open until you are
ready to pressurize the system.
Grounding
Follow manufacturer’s recommendations to
ground the
pump and fluid supply
container .
To maintain grounding continuity when
flushing or relieving pressure:
hold a metal
part of the metered dispense valve firmly to
the side of a grounded metal pail, then trigger
the metered dispense valve.
Hoses: Only use electrically conductive
hoses. Check electrical resistance of hoses.
If total resistance to ground exceeds 29
megohms, replace hose immediately.
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
dispensing and before cleaning, checking,
or servicing the equipment.
The equipment must be grounded to
reduce the risk of static sparking. Static
sparking can cause fumes to ignite or
explode. Grounding provides an escape
wire for the electric current.
FIRE HAZARD
Conductive metal surfaces on the metered
dispense valve must not make contact with
any positively charged metal surface,
including (but not limited to), the starter
solenoid terminal, alternator terminal or
battery terminal. Such contact could cause
electrical arcing and a fire.