Maintenance - Graco Foam-Cat Series Instructions-Parts List Manual

Bung Adapter
If the ISO material shows signs of crystallization, and
whenever the pump is removed from the drum, check the o-
ring (39) and gasket (41) for wear or damage, replacing as
needed. Refer to the Parts Drawing.
ISO Pump Packing Protection and
Lubrication
CAUTION
Use only IPL (Isocyanate Pump Lube) to lubricate the
packings of the feed pump. Other types of lubricant
are not as effective in preventing packing damage.
1. Insert the 14.6 oz. cartridge (16) of IPL in a standard
grease gun.
2. At shutdown each day, stop the pump with the rod
(34) in the down position, then lubricate the
packings liberally with IPL through the grease fitting
(36). Proper lubrication prevents pump sticking. See
Fig 4.
3. Wipe off the extra, contaminated IPL from around
the top of the packing nut (28) and displacement rod
(34).
4. Coat the displacement rod with fresh IPL.
Flushing
CAUTION
Be sure the solvent used is compatible with the
material to be pumped to avoid material
contamination.
1. Connect a short hose to the pump outlet.
2. Insert the pump intake into a pail of solvent.
3. Direct the fluid hose into the pail.
8 307552

Maintenance

FIG. 4
Air Lubrication
If the air supply is dry, periodically oil the air motor. For
manual lubrication, turn off the air, put about 15 drops of
lightweight motor oil in the air inlet (7), reconnect the
hose, and turn on the air. See Fig 4.
1. Open the air valve (8) or regulator to start the pump.
Allow the pump to cycle slowly for at least 5
minutes.
2. Stop and disconnect the air hose.
3. Be sure to relieve the fluid pressure.
4. Push up on the intake valve (35) check plate to drain
the lower part of the pump. See Fig 5.
5. Turn the pump over to drain the upper part of the
pump.
FIG. 5
Adjusting the Packing Nut
Follow the Pressure Relief Procedure on page 7
before adjusting the packing nut.
Periodically, check the tightness of the packing nut (28).
It should be tight enough to prevent leakage; no tighter.
See Fig. 4. If the leakage cannot be stopped, change
the packings to prevent exposure to the fluid being
pumped.
34
28
WARNING
13
7
8
36
05219B
03765