Fluke Calibration P3031, User Manual

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Maintenance & Servicing
Draining PCU Fluid
5
5-3
1
2
5
3
4
gmg11.eps
Figure 5-1. PCU Assembly
Table 5-1. PCU Assembly - Parts List
Item Description Part
1 Weight Carrier SPEC
2 Set Screw 3910313
3 Cylinder SPEC
4 Piston SPEC
5 Cylinder Retainer 3919216
Draining PCU Fluid
Note
In order to prevent contamination of the pneumatic system, the PCU
lubricating fluid must be drained from the PCU housing before
commencing any maintenance procedures that involve moving the
instrument from the horizontal position. This includes packing the
instrument for storage or shipment.
1. Depressurize the system by slowly opening the exhaust valve.
2. Disconnect any DUT from the test port.
3. Place absorbent cloth or tissue paper around the base of the PCU housing.
4. Unscrew drain plug at the lower, rear of the housing to release fluid.
5. To increase flow rate, unscrew filler plug at the upper left hand side of the housing.