Graco 220-834, Инструкция-перечень запасных частей

Страница: 17 / 28

17
PRESSURE CONTROL
To reduce the risk of serious bodily injury, including
fluid injection; splashing in the eyes; injury from
moving parts or electric shock, always follow the
Pressure Relief Procedure W arning on page 11
before continuing.
WARNING
Use extreme caution when removing the elbow
(309) or nipple (103) from the pressure control. Any
twisting or jarring of the pressure control fittings
could alter the factory setting of the control or per-
manently damage the control.
CAUTION
NOTE: Refer to Fig 20 except where noted otherwise.
NOTE: If you purchased a bare pressure control, remove
items 302 to 322 as listed on page 24, and item
103 from the old box and install them on the new
one.
1 Remove the nut (122) and washer (123). Hold the nut
(A) at the pressure control with a wrench and unscrew
the swivel union (84) from the pressure control. Re-
move the filter assembly (47).
2 Disconnect the hose (52) from the pressure control.
3 Remove the screws (135) and cover (41) from the
pressure control (50).
4 Disconnect the motor leads. See Fig 21.
5 Loosen the knurled part of the strain relief bushing
(306) and unscrew it from the pressure control. Slide
the strain relief bushing up on the power cord to pro-
vide clearance and unscrew the conduit connector
(305).
See Fig 20.
6 Remove the screws (7), lockwashers (4) and nuts (3).
Pull the pressure control away from the frame, care-
fully guiding the motor leads through the connector
(305).
7 Remove the mounting bracket (40) and screws (25)
and install them on the new pressure control.
8 Reasemble the pressure control in the reverse order
of disassembly.
Failure to observe the following may cause poor
performance or excessive pressure and perma-
nent damage to the pressure control:
1. Always use nylon spray hose at 15.2 m (50 ft)
minimum length.
2. Never use a wire braid spray hose.
3. Never attach a spray hose to the pressure
drain valve.
4. Never add any type of shutoff device between
the pump outlet and the spray gun.
5. Never allow flushing water or water base paint
to freeze in the system.
CAUTION
A
305
HIDDEN
FROM
VIEW
Fig 7–20
41
135
3
4
0121
40
VOLTAGE CHANGE
BOX LOCATED ON
THIS SIDE OF MOTOR
122
123
84
52
50
7
25
306
47
309
103
MICROSWITCH
ON/OFF
SWITCH
POWER
CORD
BROWN
BLUE
GRN/YEL
MOTOR LEADS
ATTACH TO
GROUNDING SCREW (302)
Fig 7–21
0131