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6
306–646
MAINTENANCE
Shutdown and Care of the Pump
Always
follow the
Pressure
Relief Procedure W
arning
on page 7 whenever you shut of f the pump. Stop the
pump
at the bottom of its stroke to keep fluid from drying
on the exposed displacement rod and damaging the
throat
packings.
Every
40 hours of operation, check that the packing nut/
wet–cup
(21) is tight. Follow the
Pressure Relief Proce
-
dure
W
arning
on page 7 first. T
ighten just snug – do not
overtighten
or the packings may be damaged.
Always
flush the pump before the fluid dries
in the pump
and hoses. If the pump is to be stored for any period of
time,
and
you are pumping water–based fluid, first flush
the pump with water, then with mineral spirits to protect
the
pump parts.
Flushing
To
reduce the risk of fluid injection injury
, static sparking,
or splashing in the eyes or on the skin, follow the Pres-
sure
Relief Procedure W
arning
on page
7, and
remove
the spray tip (spray guns only) before flushing
. Hold a
metal part of the gun/valve firmly to the side of a
grounded
metal
pail and use the lowest possible fluid
pressure
during flushing.
Lubrication
The accessory air line lubricator (E) provides automatic
air motor lubrication. For daily , manual lubrication, dis-
connect
the air regulator (C), place about 15 drops of
light
machine
oil in the pump air inlet, reconnect the
regulator
and
turn on the air supply to blow oil into the motor
.
Corrosion Protection
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 pressure, and leave the min
-
eral spirits in the pump. Be sure to follow all steps
of the Pressure Relief Procedure W arning on
page
7.
WARNING