Fluke Calibration 4184297, User Manual

Page: 31 / 48

Maintenance & Servicing
PCU Assembly — 10 mm Nominal Diameter — Vacuum
5
5-3
1
2
3
4
gjn31.eps
Figure 5-1. PCU Assembly - 10mm - Pressure
Table 5-1. PCU Assembly - 10 mm - Pressure - Parts List
Item Description Part Item Description Part
1 Weight Carrier Spec 3 Piston Spec
2 Cylinder Spec 4 O Ring 3864954
PCU Assembly — 10 mm Nominal Diameter — Vacuum
Piston Disassembly
1. Unscrew the PCU assembly from the instrument; use the dowel hole if the cylinder is
tight.
2. The weight carrier is permanently attached to the piston, hold the weight carrier and
gently withdraw the piston from the cylinder (2)
Piston Cleaning
3. Use “non-fluffing”, non-abrasive, lint-free tissue or absorbent cloth. Hold the piston
by the weight carrier, and rub the tissue back and forth along its length.
4. To remove all traces of contamination, the piston can be cleaned in a suitable solvent.
W
Caution
O-ring seals (where fitted) are Nitrile rubber, and should not be
immersed in solvents, as they will become damaged. They
should be wiped carefully with a new tissue.