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Hydraulic Power Supply
Limit Fluid Flow to Reciprocator
To reduce risk of over pressurizing the hydraulic
reciprocator, which could cause a rupture and serious
injury, including fluid injection, the hydraulic system
must have a means to limit the incoming fluid flow to
the reciprocator to a maximum of 3 gpm (11 lpm) and
1500 psi (10 MPa, 102 bar).
The hydraulic power supply system must have a pres-
sure reducing valve and a pressure-compensated flow
control. A flow control valve (L) is required to limit the
incoming flow to the reciprocator to a maximum of 3
gpm (11 lpm).
A supply line shutoff valve (H), pressure gauge (J), pres-
sure reducing valve (K), and flow control valve (L) are
included in the Hydraulic Fluid Control Kit, Part No.
236864, which can be ordered separately.
308390N
Hydraulic Lines
Refer to F
. 2 to locate the part mentioned below.
IG
Shutoff Valves (F and H) are installed in the hydraulic
supply and return lines.
Drain Line. Remove the plug (A) from the pump adapter
and install a 1/8-27 npt(f) tube fitting and weep tube,
ending in a waste container. Monitor the weepage of
hydraulic fluid. If it seems excessive or increases sud-
denly, the reciprocator/pump seals may need to be
changed. See page 12.
Hoses. Use a minimum 1/2 in. supply line (M) and mini-
mum 3/4 in. return line (D) on the reciprocator. Contact
your Graco representative for details of line sizing.
A pressure reducing valve (K) circulates excess
hydraulic fluid pressure back to the hydraulic power sup-
ply. Install this valve in the hydraulic supply line (M) with
a drain hose teed into the hydraulic return line (D). LImit
supply pressure to a maximum of 1500 psi (10 MPa,
102 bar).
A fluid-filled pressure gauge (L), Part No. 112567,
monitors hydraulic pressure to the reciprocator during
startup. Use the gauge for initial adjustment of the recip-
rocator. It can be removed after adjustment is made.
NOTE: A supply line shutoff valve (H), pressure gauge
(J), pressure reducing valve (K), and flow control valve
(L) are included in the Hydraulic Fluid Control Kit, Part
No. 236864, which can be ordered separately.
Installation
7
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