[EN] English - K0457
Hydraulic pressure operation (PV 623) 4-5
Issue 1
4.6.2 Add more hydraulic fluid
If the device under test has a large fluid capacity, you can add
hydraulic fluid during the pressure procedure.
4.6.3 Drain hydraulic fluid from the device under test
If you add more hydraulic fluid during the pressure procedure,
drain this fluid out of the device when the pressure procedure is
complete.
Note:
If it is safe and there is no risk of contamination, you can
leave the hydraulic fluid inside the device.
Preparation
To drain the device, we recommend these items:
•
the applicable skin and eye protection
•
a container that is large enough to hold the hydraulic fluid
and prevent contamination of the work surface
•
applicable materials to make sure the instrument and the
area stay clean; see Chapter 6 (Maintenance procedures)
Procedure
1.
Release the pressure (Section 4.3).
2.
Remove the device (Section 4.4) but do not let fluid spill
onto the PV 62x instrument.
3.
If necessary, drain the hydraulic fluid from the device under
test.
Note:
To discard the hydraulic fluid, obey all the local health
and safety procedures.
4
5
3
+
2
1
Step
Procedure
1.
To seal off all the pressure in the test port and the
pressure module connection, close the refill valve.
2.
Remove the hydraulic pressure release valve.
3.
Use the refill bottle to add the necessary hydraulic
fluid
*
but leave a small air gap.
Note:
To prevent contamination use only one type of
hydraulic fluid in the instrument.
* Refer to Chapter 7 (Specification)
4.
To remove air from the pressure mechanism, wind the
volume adjuster through one full cycle
(counterclockwise then clockwise).
5.
Seal the system and continue with the normal
pressure procedure; see Section 4.6.1.
