4.5 - GREEN MACHINE
™
- North America - Installation, Operation, Maintenance, & Troubleshooting Manual
Chapter 8: Troubleshooting
Page 138
8.6.1
Vacuum Pump Alarm: Troubleshooting Steps
Steps
Procedures
1. Check to see if the Vacuum Pump breaker (BKR2) in the Control Panel has tripped.
See Figure 8-14.
a) Turn OFF power to the VST Control Panel at the Power Switch located on the
front of the VST Control Panel. (The power, ground, and neutral will be
completely disconnected from the GREEN MACHINE).
b) Follow lockout & tagout procedures prior to starting work.
c) Open the Control Panel front door
d) Check the breaker BRK2 to see if it tripped:
•
If the breaker lever is up and the window is RED, the breaker has not
tripped.
•
If the breaker lever is down and the window is GREEN, the breaker has
tripped.
e) If the breaker has not tripped, go to Step 2.
f) If the Vacuum Pump breaker has tripped, move the lever up to reset the
breaker.
g) Close the Control Panel front door.
h) Turn on the Power Switch on the front of the Control Panel and re-install the
carabiner clip. The PLC will turn ON in the Main Screen.
i) Push the Maintenance button on the PLC touch screen.
j) Enter 878 then push the return button.
k) You will now be in the Maintenance Screen.
l) The Reset Motor Alarm button will be RED. Push the Reset Motor Alarm
button so the alarm resets.
m) Push ESC on the PLC to go back to the Main Screen and the alarm will be
cleared.
n) The GREEN MACHINE is now in a Normal Operating Mode and will operate if
the UST pressure is above 0.2 IWC.
o) NOTE: IF THE VACUUM PUMP BREAKER CONTINUES TO TRIP,
GO TO STEP 2.
