Pressure Control Adjustment
WARNING
USE EXTREME CAUTION WHEN PERFORMING THIS ADJUSTMENT PROCEDURE to reduce the risk of a fluid injection injury or other serious bodily injury, which can result from component rupture, electric shock, fire, explosion or moving parts.
This procedure sets the sprayer to 2750 psi (190 bar)
MAXIMUM WORKING PRESSURE.
Perform this procedure whenever the microswitch or pressure control assembly is reinstalled or replaced.
Improper calibration can cause the sprayer to over- pressurize, resulting in component rupture, fire or explosion. It may also prevent the sprayer from obtaining the maximum working pressure, resulting in poor sprayer performance.
NEVER attempt to increase the sprayer's maximum working pressure by performing these adjustments in any other way. Normal operation of the sprayer at higher pressures may result in component rupture, fire or explosion. To perform this adjustment, howev- er, the sprayer pressure must be temporarily in- creased above the normal working pressure.
Use a new 50 foot (15.2 m) spray hose, rated for at least 3000 psi (210 bar) MAXIMUM WORKING PRESSURE, when performing this procedure. A used, under±rated hose could develop a high pres- sure leak or rupture.
Service Tools Needed
See Fig. 21.
DNEW 50 foot, 3000 psi (minimum) grounded, flex- ible airless spray hose (A), 223±541
DNipple (B), 1/4 npt x 1/4 npsm, 162±453
DSwivel (C), 1/4 npt(m) x 1/4 npsm swivel, 156±823
DTee (D), 1/4 npt(m), 104±984
D0±5000 psi fluid±filled pressure gauge (E),1/4 npt, 102±814
DNeedle valve, 102±715 or 103±067
D3/8 in. open end wrench
DMineral spirits
D5 gallon pail and water
E
D
C
B
A
44
Procedure
WARNING
INJECTION HAZARD
To reduce the risk of serious bodily injury, follow the Pressure Relief Proce- dure Warning on page 11 before check-
ing or repairing any part of the spray system.
1.Remove the old spray hose. Install the new hard- ware and hose as shown in Fig. 21. On the other end of the hose install the needle valve.
Procedure continued on page 22
Fig. 21 | 01315 |
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