Flow 94i-D, Руководство пользователя

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Cleaning a contaminated hydraulic system
When the hydraulic pump is being replaced because of
a catastrophic failure (indicated by the presence of
metal flakes throughout the hydraulic oil system), you
must completely clean the hydraulic system. If you do
not, the new pump, intensifier, shift valve, pilot valve,
pressure control valve, and other components can fail.
Service steps
WARNING
Place the main electrical disconnect in the OFF
position and bleed down all high-pressure lines.
Place an Out of Service tag on the main electrical
disconnect and lock it out. Failure to do so can result in
equipment damage or injury to personnel.
1. Shut down the system.
2. Follow the procedures below for each pump com-
ponent, then continue with Step 3.
Reservoir
•
Drain the contaminated oil from the reservoir.
•
Remove the cover from the reservoir and completely
clean the interior.
Hoses
•
Remove ALL hydraulic oil hoses: case drain, suction,
bypass drain, system pressure, compensator, pres-
sure control valve manifold, and bleed-down valve
system. Pour fresh oil through all loose lines (hoses)
to clean and flush out the old oil.
Hydraulic pump(s)
•
Remove the shift valves, pilot valves, relief valves,
and manifolds. Completely clean and flush with
fresh oil or cleaning solvent.
Heat exchanger
•
Remove the heat exchanger and test it for leaks (see
Servicing the heat exchanger ). If the heat exchanger
does not leak, flush it with fresh oil. If the heat
exchanger is faulty, replace it.
Note: Before installing a new heat exchanger, test it
for leaks as described in Servicing the heat
exchanger.
46 | M-390
© Flow International Corporation
HYPERJET™ 94i-S AND 94i-D PUMPS