Graco Viscount II 4500 Pump [10/16] Maintenance
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Graco Viscount II 4500 Pump [10/16] Maintenance

Graco Viscount II 4500 Pump [10/16] Maintenance
 
Maintenance
WARNING
T
o reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure
on page 8.
Keep the wet-cup (P) 1/3 filled with Graco Throat Seal
Liquid (TSL)
Check the tightness of the packing nut weekly
. Before
adjusting,
relieve the pressure
. The packing nut
should be tight enough to stop leakage, but no tighter
.
Overtightening will compress and damage the pack
-
ings and result in pump leaking. Place a pin in one of
the holes of the packing nut to adjust it.
Carefully monitor the fluid supply
. If the pump empties
the supply container
, air will be drawn into the pump,
causing it to run too fast and to be damaged. If the
pump runs too fast, shut it of
f immediately. Fill the
supply container and prime the pump and hoses to
remove all air
, or flush the pump and hoses with a
compatible solvent and leave it filled with an oil-base
solvent or mineral spirits.
Always flush the pump before the fluid can dry in it.
Always stop the pump at the bottom of its stroke to
prevent the fluid from drying on the displacement rod.
Corrosion Protection for Carbon Steel
WARNING
To
reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure
on page 8.
CAUTION
Water
, or even moist air
, can cause your pump to
corrode. T
o help prevent corrosion, never leave the
pump filled with water or air
. After normal flushing,
flush the pump again with mineral spirits or oil-based
solvent,
relieve the pressure
, and leave the mineral
spirits in the pump.

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