9
307622
Operation
CAUTION
When shutting off the hydraulic supply system,
always shut off the supply line shutoff valve (E) first,
and then the return line shutoff valve (R). This is to
prevent overpressurizing the motor or its seals.
When starting the hydraulic system, open the return
line shutoff valve first.
Check the hydraulic fluid level, and add fluid as neces-
sary to fill lines, before each use.
Flush the pump before using it for the first time to
remove the light oil which was left in after factory
testing to protect the pump from corrosion. Be sure the
solvent used is compatible with the fluid to be sprayed
and the wetted parts of the pump, shown on the back
cover.
To Flush:
Use a compatible solvent when flushing. In a circulat-
ing system, circulate the flushing fluid long enough to
thoroughly clean all lines.
WARNING
To reduce the risk of fluid injection, static sparking
and splashing when flushing, be sure the entire
system is grounded, including flushing pails. Hold a
metal part of the gun firmly to the side of a
grounded metal pail, and aimed into it, and use the
lowest possible pressure to flush. See Fig. 2. Then,
follow the
Pressure Relief Procedure
on page 8.
Fig. 2
ÄÄÄÄ
ÄÄÄÄ
ÄÄÄÄ
01136
Maintain firm
metal-to-metal
contact between
gun and container.
To operate the pump, turn on the hydraulic power
supply. Open the hydraulic return line shutoff valve (R)
first, and then the supply line shutoff valve (E). Slowly
open the flow control valve. Use the lowest possible
pressure to obtain the desired results. Higher pres-
sures increases tip wear and pump wear.
In a direct supply system, the pump starts when the
gun or valve is opened and stall when it is closed. In a
circulating system, the pump operates continuously
until the hydraulic power supply is turned off.
WARNING
To reduce the risk of overpressurizing the system
which can cause a rupture, fire, or explosion and
result in serious injury, including fluid injection,
always follow these precautions:
Never exceed 1000 psi (7 MPa, 70 bar), or 3 gpm
(11.4 liter/min) hydraulic input to the motor.
Never exceed 1000 psi (7 MPa, 70 bar) maximum
pump outlet pressure.
CAUTION
Never allow the hydraulic oil temperature to exceed
130
_
F (54
_
C). The pump seals wear faster and
leaking might occur at higher temperatures.
