Graco Lube Master, Instructions Manual

Page: 10 / 44

Setup
10 3A2781B
Fill Grease Reservoir Model
• Filling the grease reservoir requires an external,
air-free supply source connected to the fill stud (13).
• Avoid introducing air into the system, by keeping
enough grease in the supply source to fill the reser-
voir without being disconnected.
• Operate the supply source at a steady speed to
allow air-free filling of the reservoir. Filling the
reservoir too fast may result in air pockets.
• Visually check the level of grease.
- For reservoirs with plastic cylinders, the grease
level can be viewed through the cylinder.
1. Remove the fill cap (12)
2. Connect the grease supply source to the fill stud
(13).
3. Loosen the drain plug (E), located on the opposite
side of the base from the fill stud (13) (F
IG
. 6).
4. Begin to slowly fill the reservoir, allowing for air
trapped under the follower to exhaust out the open
drain plug.
5. After grease that is free of air flows from the drain,
tighten the plug (E) and continue to fill the reservoir
until follower is at the vent hole in reservoir tube
(any remaining air and small amount of grease will
exit drain).
6. When filling is complete, turn off the supply source
and disconnect it from the fill stud (13). Replace the
cover (12).
NOTE: Integrating a check valve inside of the fill
stud prevents lubricant from being forced back out.
7. Loosen the pump assembly outlet fitting.
8. Operate the pump until lubricant that is free of air
flows from the outlet port.
9. Tighten the mainline connection at the pump. The
pump is now free of air.
NOTE: If the pump will not take a prime, inject sev-
eral ounces of heavy oil through the fill stud. The
pump primes on the oil pulling the grease behind it.
If this method is used, all injected oil should be dis-
charged at the loosened system mainline connec-
tion, in addition to any air.
OVER PRESSURIZATION HAZARD
Over pressurization can result in serious injury from
splashing fluids due to equipment rupture. Fill slowly
to avoid over pressurizing the reservoir.
F
IG
. 5: Fill Grease Reservoirs
12
E
13
F
IG
. 6: Drain Plug
E