Instruction manual

33
High Throughput Diffusion Pumps
DRAFT 12/23/04
To add or change pump fluid:
1. Locate the fill and drain fittings in the appropriate
outline drawing. Refer to Figure 6 on page 9 through
Figure 9 on page 12. The fittings have special Viton
®
elastomer sealed plugs.
2. Assure that the power to the heaters is off.
3. Remove the drain plug and drain fluid into a suitable
sized container.
4. Remove the plug from the filling port of the pump
and pour the fluid in up to the FULL COLD level on
the sight glass as shown in Figure 23. The fluid can
also be poured in from the pump inlet or foreline.
Figure 23 Sight Glass Assembly
5. Replace the fill plug with a new Viton gasket.
Lubricate the O-ring with pump fluid, put the
O-ring in place, and reassemble the system.
6. Tighten the fill plug using maximum torque of
75 inches-pounds.
Once the pump is running, check that the fluid level is at
the FULL HOT level in the sight glass.
CAUTION Wait until the pump has cooled then
vent it to the atmosphere.
NOTE Dispose of fluids in accordance with all
appropriate regulations.