Advertisement
WARNING
Pressure
Relief
Procedure
To reduce the risk of serious bodily injury, including
fluid injection, splashing in the eyes or on the skin, or
injury from moving parts, always follow this procedure
whenever the pump is shut off, when checking or ser-
vicing any part of the system, when installing or
changing spray tips, and whenever you stop spraying.
1. Engage the spray gun or dispensing valve safety
latch.
2. Turn off the hydraulic power supply.
3. Disengage the gun or dispensing valve safety latch.
4. Hold a metal part of the gun or valve firmly to a
grounded metal waste container and trigger it to
I
relieve the fluid pressure.
5. Engage the safety latch again.
6. Open the pump drain
valve
(required in system),
having a container ready to catch the drainage.
7. Leave the drain valve open until you are ready to
spray again.
if you SLISpeCt thet the sprey tip or hose is COt??p/ete/y
clogged
of thet pressure has not b88n f&y relieved
after following
th8 steps 8bov8, VERY SLOWLY
loosen the hose end coupling and relieve pressure
gradually, then loosen completely. Now clear the tip or
hose obstruction.
TROUBLESHOOTING
CHART
PROBLEM
CAUSE
Pump operates,
but output low on
both strokes
Pump operates,
but output low on
down stroke
Pump operates, but low on up stroke
Erratic pump operation
Exhausted fluid supply
Held open or worn intake valve or
piston packings
SOLUTION
Restricted lines or inadequate
hydraulic supply
Insufficient hydraulic pressure; Clos-
ed or clogged valves, etc.
Exhausted fluid supply
Clogged fluid line, valves, etc.
Fluid check valves naad adjusting
Packing nut too tight
Loose packing nut or worn
packings
Held open or worn intake valve
Clear lines; increase hydraulic
supply. Open flow control.
Open;
clean.
Refill 6 raprima or flush!'
Clear?*
Adjust; Sea page 6.
Loosen.
Tighten; replace. Sea manual
367-662.
Clear; service. Saa manual 367662.
Held open or worn piston or
packings
Clear: service. Sea manual 307-662.
Refill and raprima or flush!'
Clear; service. Sea manual 367662.
Fluid check valves need adjusting
Excessive hydraulic fluid supply
volume
Adjust; Saa page 6.
Lower.
Pump fails to operate
Restricted lines or inadequate
hydraulic supply
Insufficient hydraulic pressure; clos-
ad or clogged valves, etc.
Exhausted fluid supply
Clogged fluid line, valves, etc.
Damaged hydraulic motor
Dried fluid seizure of displacement
rod
Clear; increase.
Open; clean.
Refill and raprima or flush?
Clear!*
Service; sea 307-664.
SarvicaC**
and raprima the pump being sure to alimina
*Stop the pump immediately if it is running too fast; check fluid supply. If empty, ra
all air from the system, or flush the pump and store it with an oil-based solvent, such as mineral spirits, to prevent corrosion.
**Follow the Pressure Relief Procedure
Warning,
above, and than disconnect fluid line. If pump starts when hydraulic power is
restored, line, etc. is clogged.
l
**Alwavs
stop the pump at the bottom of its stroke, and keep the packing nut/wet-cup
l/3 full of TSL to help prevent displacement
rod seizure.
307-624
7
Advertisement
