Operation
Starting the Pump
Maximum
W
orking Pressures
T
o reduce the risk of serious bodily injury
includ-
ing fluid injection and splashing in the eyes or on
the skin, which may be caused if a component
ruptures:
Never exceed
1500 psi (10 MPa, 102 bar) Maxi
-
mum Hydraulic Pressure
to the reciprocator
.
Never exceed
375 psi (2.6 MPa, 26 bar) Maxi
-
mum Outlet Pressure
from the displacement
pump.
Be sure all accessories added to the reciproca
-
tor power supply side are capable of at least a
1500 psi (10 MPa, 102 bar) maximum working
pressure and all of those for the pump fluid out
-
let side have at least a 375 psi (2.6 MPa, 26 bar)
maximum working pressure
.
The maximum working pressure of the displace
-
ment pump is directly proportional to the pres
-
sure at which the reciprocator is operated.
Therefore, if the fluid supplied to the reciprocator
is 1000 psi (7 MPa, 69 bar), the pump fluid out
-
let pressure will be 250 psi (1.8 Mpa, 18 bar).
WARNING
1. T
urn on the hydraulic power supply
.
2.
Open the return line shutof
f valve (H), and slowly
open the hydraulic supply line shutoff valve (K).
3.
Adjust the flow control valve (N) to limit the
hydraulic flow to no more than 3 gpm (1
1 lpm),
which is approximately 60 cycles per minute.
NOTE:
If Graco Part No. 236–864 hydraulic fluid
control is used, no adjustment is necessary
.
4.
By adjusting the pressure reducing valve control
adjustment (M), increase the hydraulic inlet
pressure from 500 to 1500 psi (3.4 to 10 MPa, 34
to 102 bar). Increasing the inlet pressure
increases the outlet pressure. Decreasing the inlet
pressure decreases the outlet pressure.
5.
Always use the lowest pressure possible to obtain
the desired results. This reduces pump wear
.
Never allow a pump to run dry of the fluid being
pumped. A dry pump quickly speeds up and can
damage itself. If it speeds up, shut of
f the power
supply to the reciprocator immediately
. Refill the
supply container
, and prime the pump to eliminate
air.
T
o prevent the pump from running dry
, use a low-
level cutoff valve.
CAUTION
If the Reciprocator Leaks at the Fluid
Fittings
Tighten
the fittings (16, 17, 25), which are self-sealing
and have replaceable o-rings. If leaking persists,
change the o-rings. See Fig. 3.
Fig. 3
SELF-SEALING
FIT
-
TING
(16, 17, 25)
O-RING
RECIPROCATOR
03522
Shutdown
Relieve
the pressure
whenever you shut down.
WARNING
T
o reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure
on page 8.
