14
308147
Operation/Maintenance
(HYDRAULIC-POWERED PUMPS)
Starting and Adjusting the Pump
1.
Refer to Fig. 4 on page 10. Connect the suction kit
(T) to the pump’s fluid inlet, and place the tube into
the fluid supply.
2.
Check the hydraulic fluid level before each use,
and add fluid as necessary.
3.
Make certain that the supply line shutoff valve (U)
and the return line shutoff valve (V) are closed.
4.
Start the hydraulic power supply.
5.
Hold a metal part of the gun/valve (S) firmly to the
side of a grounded metal pail and hold the trigger
open.
6.
Open the return line shutoff valve (V) first, then
slowly open the supply line shutoff valve (U).
7.
Cycle the pump slowly until all air is pushed out
and the pump and hoses are fully primed. Release
the gun/valve trigger and engage the safety latch.
The pump should stall against pressure when the
trigger is released.
WARNING
SKIN INJECTION HAZARD
To reduce the risk of fluid injection, do not use your
hand or fingers to cover the bleed hole on the
underside of the bleeder valve body (34) when
priming the pump. Use a crescent wrench to open
and close the bleeder plug (35). Keep your hands
away from the bleed hole.
8.
If the pump fails to prime properly, open the
bleeder valve (35) slightly. Use the bleed hole, on
the underside of the body (34), as a priming valve
until the fluid appears at the hole. See Fig. 5.
Close the plug (35).
NOTE: When changing fluid containers with the hose
and gun already primed, open the bleeder valve plug
(35), to assist in priming the pump and venting air
before it enters the hose. Close the bleeder valve
when all air has been eliminated.
9.
With the pump and lines primed, and with ade-
quate hydraulic volume supplied, the pump will
start and stop as the gun/valve is opened and
closed. In a circulating system, the pump will
speed up or slow down on demand, until the
hydraulic power supply is shut off.
10. Use the fluid pressure gauge (F) and flow control
valve (G) to control the pump speed and the fluid
outlet pressure. Always use the lowest hydraulic
flow and pressure necessary to get the desired
results. Higher pressures cause premature tip/noz-
zle and pump wear.
WARNING
COMPONENT RUPTURE HAZARD
To reduce the risk of overpressurizing
your system, which could cause compo-
nent rupture and serious injury, never
exceed 10 MPa, 103 bar (1500 psi) Maximum Hy-
draulic Input Pressure to the pump, or 140 bar
(2000 psi) Maximum Fluid Working Pressure (see
the Technical Data on page 35).
To prevent overpressurizing the hydraulic motor or
its seals, always shut off the supply line valve (U)
first, then shut off the return line valve (V).
CAUTION
Do not allow the hydraulic oil temperature to exceed
54
_
C (130
_
F). The pump seals will wear faster and
leakage may occur if the pump is operated at higher
oil temperatures.
11. Never allow the pump to run dry of the fluid being
pumped. A dry pump will quickly accelerate to a
high speed, possibly damaging itself. If your pump
accelerates quickly, or is running too fast, stop it
immediately and check the fluid supply. If the
supply container is empty and air has been
pumped into the lines, refill the container and
prime the pump and the lines with fluid, or flush
and leave it filled with a compatible solvent. Be
sure to eliminate all air from the fluid system.
