28
308986
Operation
10. While observing the pump outlet gauges (J2),
adjust the resin and hardener drain valves (P1,P2)
until the gauges show your normal operating
pressure.
NOTE:
The pressure must be within 20% of the orig-
inal spraying pressure to get a usable test.
11. Close the mixer manifold. Put a separate sampling
container under each drain valve.
12. Open the mixer manifold to draw a sufficient
sample.
13. As you close the mixer manifold, check the pump
outlet gauges (J2) again to make sure they are at
your normal operating pressure.
14. If the fluid pressure is not within 20% of the normal
operating pressure, flush the mixer manifold again
and take another sample. If the sample ratio is
incorrect, refer to the Troubleshooting chart on
page 31. If the ratio is correct, the problem is with
other system component.
15. Close the drain valves (P1,P2).
Fig. 20
N
P1
KK
P2
J2
J2
02898A
Hydraulic Startup – Prime the Pump
1.
See Fig. 3. Check the hydraulic fluid level before
each use, and add fluid as necessary.
2.
Close the supply line shutoff valve (P) and the
return line shutoff valve (R).
3.
Start the hydraulic power supply.
4.
Hold a metal part of the gun firmly to the side of a
grounded metal pail and hold the trigger open.
5.
Open the return line shutoff valve (R) first, then
slowly open the supply line shutoff valve (P).
6.
Run the pump slowly until all air is pushed out and
the system is fully primed. Always use the lowest
pressure necessary to get the desired results.
Higher pressures cause premature pump wear.
7.
Release the gun trigger and lock the trigger safety.
With adequate hydraulic volume supplied to the
motor, the pump will start and stop as you open
and close the gun.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure
on page 23.
8.
Relieve the pressure. Install the nozzle in the gun,
as explained in the gun manual.
WARNING
COMPONENT RUPTURE HAZARD
To prevent overpressurizing the hydraulic motor or
its seals,
always
shut off the supply line valve (P)
first,
then shut off the return line valve (R).
CAUTION
Do not allow the hydraulic oil temperature to exceed
130
_
F (54
_
C). The pump seals will wear faster and
leakage may occur if the pump is operated at higher
oil temperatures.
Summary of Contents for HYDRA-CAT FIXED RATIO
Page 38: ...38 308986 Notes...
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