Drain All The Hydraulic Fluid; Preparation; Procedure - GE Druck PV 622 User Manual

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4.7 Drain all the
hydraulic fluid

4.7.1 Preparation

4.7.2 Procedure

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4-6 Hydraulic pressure operation (PV 623)
In some conditions, it is necessary to fully drain the hydraulic
fluid from your PV 62x pressure station; for example:
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if you are using water and the storage or operating
temperature is going to be less than 4°C (39°F)
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if there is a long period of storage
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if there is unwanted material in the hydraulic fluid
To drain the instrument, we recommend these items:
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the applicable skin and eye protection
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a container that is large enough to hold the hydraulic fluid
and prevent contamination of the work surface
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applicable materials to make sure the instrument and the
area stay clean; see Chapter 6 (Maintenance procedures)
Step Procedure (Drain all the fluid)
1.
If applicable, release the pressure (Section 4.3) and
remove the device (Section 4.4).
Note: If it is attached, we also recommend you remove the
DPI 620 calibrator; see Chapter 5 (Pressure calibrator
operation (DPI 620)).
2.
Remove the hydraulic pressure release valve.
3.
Wind the volume adjuster wheel fully clockwise; this
moves the fluid out of the pressure mechanism.
4.
Put a container below the instrument then tilt the instrument
up until all the fluid has come out. To discard the hydraulic
fluid, obey all the local health and safety procedures.
Note: Fluid comes out of the test port and the connection
for the pressure release valve.
5. To flush out fluids that contain unwanted material, refill the
system and repeat steps 3 and 4.
Note: To prevent contamination use only one type of
hydraulic fluid in the instrument.
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K0457 - [EN] English