Fluke P3800 [23/32] Chapter 4

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Chapter 4

Maintenance

Introduction

The P3800 Series of High Pressure Deadweight Testers have been designed to require

minimal maintenance.

Routine maintenance entails keeping the unit clean and free from excess oil.

The operating fluid should be changed at regular intervals due to potential contamination

from items under test. As soon as discoloration of the fluid is observed it should be

replaced as soon as possible.

W Warning

If fluid contacts the skin, a mild allergic reaction may result.

Wash at once with soap and water.

Should the PCU require inspection or cleaning, great care must be taken whilst handling

the components.

PCU Removal

Before removal of the PCU, the system pressure must be reduced to zero as described

above.

1. Carefully lift off Weight Carrier Tube Assembly.

2. Unscrew Piston Nut B, and lift out Piston — take great care not to apply any

side-loads to the piston to avoid possible breakage.

3. Unscrew Piston Nut A, taking great care not to drop Cylinder, as it may be inside the

assembly.

Note

The Piston Nut A contains a bearing assembly, which is held in place by a

snap-ring. This should not normally require any maintenance or additional

lubrication.

4. Remove Cylinder.

5. The O Ring Seal under the PCU can now be replaced if required.