Graco ULTRA 1000 Instructions-Parts List Manual page 23

POWER SUPPLY CORD REPLACEMENT
1. Remove the pressure control cover and screws.
2.
Disconnect the power supply cord lead from the
ON/OFF switch (303). the
whiie
wire going to the
bridge (308). and the green wire to the grounding
screw (343) and lockwasher
(327).
See Fig 15.
3. Loosen the strain relief bushing (328). Remove the
power supply cord (31 1).
4. Install the new cord in the reverse order of
disassembly.
5. Reinstall the cover end screws.
343,3271
311
A p
ON/OFF SWITCH REPLACEMENT
1. Remove the pressure control cover end screws.
2. Use
s needle nose pliers to disconnect the upper
terminal wire from the microswitch (302) for ease in
removing the ONlOFF switch
(303).
Refer to Fig
15.
3. Use the pliers to disconnect the two black wires
from the ON/OFF switch (303). Refer to Fig 15.
4. Use
a
5/8"
socket wrench to loosen and remove
the nut and rubber boot (304) from the top
of
the
pressure control
box.
Remove the switch guard
1305).
See Fig 16.
-5.
Remove the ON/OFF switch.
6. Install the new switch so the internal tab of the anti-
rotation ring (W) engages with the vertical groove
in the threads of the switch, and the external tab
engages with the blind hole
(D)
of the pressure con-
trol box. See Fig 16.
7. Install the switch guard (305). aligning the internal
tab with the groove in the threads. See Fig 16.
8. Install the nut and rubber
boot
(304) and tighten.
See Fig 16.
9. Reconnect the wires to the ON/OFF switch (303)
and reconnect the wire to the microswitch
(302).
Refer to Fig 15.
10. Reinstall the pressure control covw end screws.
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