4.5 - GREEN MACHINE
™
- North America - Installation, Operation, Maintenance, & Troubleshooting Manual
Chapter 8: Troubleshooting
Page 140
Vacuum Pump Alarm: Troubleshooting Steps, continued
…
Steps
Procedures
3
.
Check to see if the vacuum pump/motor rotates freely.
•
Physically check the Vacuum Pump to make sure the pump, motor, and drive
couplings are functioning correctly.
a) Remove the carabiner clip and turn the Power Switch on the front of the VST
Control Panel OFF.
b) At the GREEN MACHINE, turn OFF the Safety Disconnect Switch.
c) Use Lockout/Tagout Safety procedure.
d) Remove the cover on the GREEN MACHINE.
e) Remove the fan guard over the vacuum pump / motor drive coupling.
f)
g)
h)
Turn the motor/vacuum pump by hand to see if it is seized (cannot rotate).
If you cannot turn the shaft between the pump and the motor, loosen the set
screws on the motor side of the rubber flange sleeve and slide the coupling
towards the motor.
Turn both the motor and vacuum pump sides of the shaft.
g) If the vacuum pump is seized, REPLACE THE VACUUM PUMP.
h) If the motor is seized, REPLACE THE VACUUM PUMP MOTOR.
i) If the drive coupling rubber flange sleeve is damaged or jammed, or if you
replace either the vacuum pump or the vacuum pump motor, REPLACE THE
RUBBER FLANGE SLEEVE.
j) See Chapter 9 for Replacement Parts Procedures.
n) Push the Maintenance button on the PLC touch screen.
o) Enter 878 then push the return button.
p) You will now be in the Maintenance Screen.
q) The Reset Motor Alarm button will be RED. Push the Reset Motor Alarm button
so the alarm resets.
