Baker Hughes Druck DPI 610 IS, Инструкция по эксплуатации

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Copyright 2007 Baker Hughes Company.
English–DPI 610/615 IS Instruction Manual | 57
Bleeding the System
Note: A bleed point must be provided on the external device.
Figure 9 - 2: Priming/Test Set-up
9.4 Bleeding the System
Before any measurements can be made, the hydraulic system needs to be primed and bled free
of air. During the following operations, prepare for fluid spillage and provide a suitable receptacle
for collecting the spillage.
1. Prepare for use as detailed in Section
9.3.
2. Fill a suitable container with clean hydraulic fluid and place the bleed hose assembly (1)
connected to the priming port into the fluid.
3. Open the UUT bleed valve (5) and, if possible, fit a hose to the bleed point and locate the
hose end in a container of the same hydraulic fluid.
4. Use the priming pump (2), to pump hydraulic fluid into the instrument and the connected
system. Monitor the hydraulic fluid level, ensuring that the bleed hose assembly (1) stays
below the fluid level and is not allowed to suck in air. Top-up hydraulic fluid level as
necessary.
5. Continue use of the priming pump (2) until only hydraulic fluid and no air is expelled from the
bleed point.
6. Close the UUT bleed valve (5) when the priming pump (2) is at the bottom of its stroke (fully
pushed in) and slowly wind out the screw-press (3) to its fullest extent to draw in further
hydraulic fluid (approx. 7 cm
3
or 0.43 in
3
).
1 Bleed hose assembly 2 Priming pump
3 Screw-press 4 UUT/system under test
5 UUT bleed valve 6 Isolation valve
O Open C Closed
5
4
6
1
2
3
S
3