Graco Lube Master Instructions Manual page 21

10 Watt Low-Level Switch Assembly Option
Refer to F . 17 for reference numbers used in the fol-
IG
lowing instructions.
No maintenance is required on the 10 watt low-level
assemblies used on oil reservoirs.
If the oil level is too low and the assembly fails to per-
form as required, the pump assembly may have to be
disassembled to replace a defective switch assembly.
Before disassembling, check that all electrical connec-
tions are secure and check for any physical obstruction
preventing the float (304h) from operating.
Disassembly
1. Follow Prepare for Maintenance, page 16.
2. Disconnect the two 22 AWG wires from the top of
the adapter (304k).
3. Disconnect the adapter (304k) from the conduit.
4. Remove the cover (9) from the reservoir (11).
5. Unscrew the coupler (304m) from the adapter
(304k). Use caution to not twist the wires too much.
6. Unscrew the coupler (304m) from the coupling
(304n).
7. Unscrew the coupling (304n) from the switch (304p).
8. Unscrew the adapter (304k) from the reservoir cover
(9).
3A2781B
Reassembly
The following procedure is used for installing a new
assembly in a reservoir. If the assembly was removed
for repairs, steps 1 and 2 do not apply.
1. Remove the cover (9) from the reservoir (11).
2. Remove the 1/4 in. pipe plug from the cover. Screw
the adapter (304k) into place and tighten securely.
3. Guide the two 22 AWG wires from the switch (304p)
through the coupling (304n).
4. Place the coupling (304n) onto the switch (304p)
and tighten securely.
5. Guide the two 22 AWG wires through the coupler
(304m).
6. Place the coupler (304m) into the coupling (304n)
and tighten securely.
7. Guide the two 22 AWG wires through the adapter
(304h).
8. Insert the coupler (304m) into the adapter (304k).
Use caution to not to twist the wires too much.
9. Tighten the connection.
10. Connect the switch (304p) in accordance with local
electrical codes.
F . 17:
IG
Maintenance and Repair
304k
9
304m
304n
304p
21