O'Brien PRO 301, Руководство пользователя

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19
308–030
PRESSURE CONTROL ADJUSTMENT
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 rup-
ture, electric shock, fire, explosion or moving parts.
This procedure sets the sprayer to 2500 psi
(172 bar) MAXIMUM WORKING PRESSURE.
Perform this procedure whenever the micro-
switch or pressure control assembly is rein-
stalled or replaced.
Improper calibration can cause the sprayer to
overpressurize, resulting in component rupture,
fire or explosion. It may also prevent the spray-
er from obtaining the maximum working pres-
sure, resulting in poor sprayer performance.
NEVER attempt to increase the sprayer’s maxi-
mum working pressure by performing these ad-
justments in any other way. Normal operation of
the sprayer at higher pressures may result in
component rupture, fire or explosion. To per-
form this adjustment, however, the sprayer
pressure must be
temporarily increased 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 de-
velop a high pressure leak or rupture.
WARNING
Service Tools Needed:
D
NEW 50 foot, 3000 psi (minimum)
grounded, flexible airless spray hose,
p/n 223–531
D
0–5000 psi fluid–filled pressure gauge,
1/4 npt, p/n 102–814
D
Tee, (1/4 npt(m), p/n 104–984
D
Nipple, (1/4 npt x 1/4 npsm), p/n 162–453
D
Swivel, (1/4 npt(m) x 1/4 npsm swivel)
p/n 156–823
D
Needle valve, p/n 102–715 or 103–067
D
3/8 in. open end wrench
D
Mineral spirits
D
5 gallon pail and water
Procedure continued on page 20
Fig 17
TEE, 104–984
NIPPLE, 162–453
Connect new hose here
Connect needle valve on end
of hose.
FLUID–FILLED
PRESSURE GAUGE,
102–814
SWIVEL,
156–823
EXISTING TEE
EXISTING PRESSURE
DRAIN VALVE
PRESSURE CONTROL
EXISTING
NIPPLE