4.5 - GREEN MACHINE
™
- North America - Installation, Operation, Maintenance, & Troubleshooting Manual
Chapter 9: Replacement Procedures
Page 175
9.8.2
Removing the Vacuum Pump
1.
For the Vacuum Pump Assembly and Components,
See Figure 9-22.
2.
Make sure the power is OFF to the VST Control Panel at the Power Switch located on
the front of the VST Control Panel.
NOTE: The Motor will not be affected during the replacement of the Vacuum Pump.
Figure 9-22: Vacuum Pump Assembly and Components
3. Remove the brass pipe fittings from both sides of the Vacuum Pump and keep for reuse.
CAUTION
: The fittings are a Parker 45° flare, use caution not to damage the 45° flare
fittings or the threads after removal.
4. Remove the fan guard (the large center guard #1 in
Figure 9-22
) for access to the
coupling flanges and removal of the Vacuum Pump.
5. Loosen the drive coupling set screws on the motor side of the rubber flange sleeve, then
slide the drive coupling towards the motor. Penetrating oil may be needed to slide the
flange sleeve.
Remove the rubber flange sleeve and discard.
6. The rubber flange sleeve between the Vacuum Pump and the motor must be replaced
with each new pump.
7. Remove the 4 mounting bolts from the Vacuum Pump base and keep for re-use.
CAUTION
: There may be metal shims under the Vacuum Pump. They must be marked for
location and saved for re-use.
8. Slide the Vacuum Pump towards the motor and remove.
