Filter
Top Products
307-830 19
Pressure
Control
WARNING
INJECTION
HAZARD
T
o reduce the risk of serious bodily
injury
, follow the
Pressure Relief Proce
-
dure W
arning
on page 1
1 before check
-
ing or repairing any part of the spray system.
CAUTION
Do not remove the nipple (105e) or elbow (105d)
from the pressure control unless they are damaged.
T
wisting or jarring the these fittings could alter the
factory setting of the control or permanently damage
it. If they must be removed, use extreme care. Hold
the corresponding hex (B) steady with a wrench and
then remove the part.
WARNING
All wires connected to the over–pressure switch (C)
and the pressure switch (D) must be insulated at
the terminals to reduce the risk of electric shock if
someone touches these parts when the power is
on. When installing the new pressure control, be
sure the these terminals are covered with shrink
tubing or electrical tape. See Fig. 20.
1.
Disconnect the spray hose. Hold the nut (B)
steady with a wrench and unscrew the filter (15).
2.
Hold the elbow (105d) steady with a wrench and
disconnect the hose (30). Disconnect the drain
hose (80).
3.
Remove the pressure control cover (21).
4.
Disconnect the three power supply cord leads. See
Fig. 20.
5.
Disconnect the four motor leads. See Fig. 20.
6.
Unscrew the conduit nut (103). See Fig. 19. Pull
the pressure control away from the conduit while
carefully guiding the wires through the connector
.
7.
Loosen the knurled part of the strain relief bushing
(101) and unscrew the fitting from the pressure
control. See Fig. 19.
8.
Remove the mounting screws (35) and pull the
pressure control away from the sprayer
.
See Fig. 19.
9.
Remove the mounting plate (1
1) and secure it to
the new pressure control. See Fig. 19.
10.
Reassemble the new pressure control in the
reverse order of disassembly
.
11.
Adjust the pressure control.
See page 21.
CAUTION
Failure to observe the following precautions may
cause poor performance or excessive pressure and
permanent damage to the pressure control.
D
Always use at least 50 ft (15.2 m) of grounded,
flexible spray hose.
D
Never use a wire braid spray hose.
D
Never add any type of shutof
f device between the
pump outlet and the spray gun.
D
Check the filter (if used) for clogging or incorrect
assembly if tip clogging frequency increases.
D
Never allow flushing water or water base paint to
freeze in the system.
01755A
Fig. 19
35
44
30
70
21
23
11
33
80
B
101
34
103
105e
105d
15