Graco LubeMaster, Инструкция по эксплуатации

Страница: 19 / 44

Maintenance and Repair
3A2781A 19
Assembly
Before assembling, lubricate followers and tube inner
diameter with the same lubricant used in the system.
1. Slide reservoir (11) over follower cups (15 and 17)
being careful not to distort the follower cup lips.
Slide reservoir tube up until it contacts reservoir cap
(9).
2. Install new gasket (8) on pump.
3. Place reservoir (11) on gasket (8) and rotate reser-
voir cap (9) until holes in the cap line up with holes
in the pump.
4. Install tie rods (3) through holes in reservoir cap (9)
and pump.
5. Install lockwashers (5) and hex nuts (1) on tie rods
(3) and torque to 5 ft-lbs (6.78 N•m).
6. Install fill stud (13) and dust cap (12) in pump.
When the assembly is completed, any components
which were removed to ease disassembly should be
reinstalled on the reservoir.
Low-Level Switch Assemblies
Refer to F
IG
. 12 for reference numbers used in the fol-
lowing instructions.
If the grease level runs down and the switch assembly
fails to perform as required:
• check all electrical connections to make sure they
are secure
• check for any physical obstructions which might be
preventing the switch from operating. If an obstruc-
tion is found, disassemble the unit and clear the
obstruction.
If switch assembly is damaged, replace the switch
assembly using the following procedure.
Disassembly
1. Disconnect all electrical power, air supplies and
relieve pressure to the lube system. (See
Pressure
Relief Procedure on page 13)
2. Disconnect and remove all wiring from the low level
switch (304).
3. Remove low level switch (304) from bracket (a).
4. Remove retainer ring (b) and spring (c).
5. Remove three screws (d) and bracket (a).
Assembly
1. Attach bracket (a) to grease reservoir cover using
three self-tapping screws (d) (F
IG
. 12).
2. Place spring (c) (F
IG
. 12) over tip of level indicator.
3. Compress spring (c) and place retainer ring (b)
between spring and tip of level indicator (F
IG
. 12).
4. Attach low level switch (5) to bracket (a) (F
IG
. 12).
5. Wire low level switch (304a) in accordance with local
electrical codes. Refer to wiring diagram (F
IG
. 13).
A Normally closed
B Normally open
C Common
F
IG
. 12
F
IG
. 13: Low Level Switch Wiring
304
a
b
d
c
A
B
C