Operation - Graco Dyna-Star 236-753 Instructions And Parts List

Before you start the pump
CAUTION
Recommended Hydraulic Oil
Use Graco-approved Hydraulic Oil or a premium,
ISO grade 46 petroleum-based hydraulic oil con-
taining rust and oxidation inhibitors and anti–wear
agents.See A
CCESSORIES
Before using any other type of oil in this motor,
contact Graco Product Service, 1–800–543–0339.
Unauthorized use of lesser grade oil or substitutes
may void the warranty.
Hydraulic Oil Working Temperature
The recommended hydraulic oil operating tempera-
ture is 80 – 115 F (27 – 45
will wear faster and leakage may occur if the pump
is operated at higher oil temperatures.
If the hydraulic oil temperature approaches 130 F
(54 C), check the hydraulic fluid supply cooling
system, filters, etc. and clean or repair as needed.
1. Check the hydraulic fluid level in the hydraulic power
supply before each use , and add fluid as necessary
to fill the lines.
2. Flush the pump before using it for the first time to re-
move the light oil which was left in after factory test-
ing to protect the pump from corrosion. Be sure the
solvent used is compatible with the fluid to be
pumped and the pump wetted parts. See TECHNI-
CAL DA TA, page 23. Flush
comes from the outlet hose.
WARNING
How to relieve pressure
To reduce the risk of serious bodily injury whenever
you shut off the pump, check, service, clean or re-
pair any part of the system, always follow the Pres-
sure Relief Procedure on page 2.
Be sure you ALWAYS shut off the hydraulic supply
line shutoff valve (K) first, and then the return line
shutoff valve. This is to prevent overpressurizing
the motor or its seals. When starting up the hydrau-
lic system, open the return line shutoff valve first.

Operation

on page 22.
C). The motor seals
until clean solvent
To start the pump
WARNING
Maximum Working Pressures
To reduce the risk of serious bodily injury including
fluid injection and splashing in the eyes or on the
skin, which may be caused if a component
ruptures:
Never exceed 1500 psi (105 bar) Maximum Hy-
draulic Pressure to the reciprocator.
Never exceed 375 psi (26 bar) Maximum Outlet
Pressure from the displacement pump.
Be sure all accessories added to the reciprocator
power supply side are capable of at least a 1500
psi (105 bar) maximum working pressure and all of
those for the pump fluid outlet side have at least a
375 psi (26 bar) maximum working pressure .
The maximum working pressure of the displace-
ment pump is directly proportional to the pressure
at which the reciprocator is operated. Therefore, if
the fluid supplied to the reciprocator is 1000 psi (70
bar), the pump fluid outlet pressure will be 250 psi
(17.5 bar).
Turn on the hydraulic power supply.
Open the return line shutoff valve (H) first and slowly
open the hydraulic supply line shutoff valve (K).
Adjust the hydraulic inlet pressure from 500 to 1500
psi (35 to 105 bar) with the pressure reducing valve
control adjustment (M) on the hydraulic fluid control
(A). Increasing the inlet pressure increases the outlet
pressure. Decreasing the inlet pressure decreases
the outlet pressure.
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 off the power sup-
ply to the reciprocator immediately. Refill the supply
container and prime the pump to eliminate air.
NOTE: To prevent the pump from running dry , use a
low–level cutoff valve.
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.