4.5 - GREEN MACHINE
™
- North America - Installation, Operation, Maintenance, & Troubleshooting Manual
Chapter 9: Replacement Procedures
Page 155
9.1.2
Replacement Procedures by Part
9.2 PLC (Controller) Replacement
9.3 Control Panel Small Components Replacement
9.3.1 Vacuum Pump Motor Breaker Replacement
9.3.2 Vacuum Pump Motor Solid State Relay Replacement
9.4 Pressure Sensor Replacement
9.5 Rubber Flange Sleeve Replacement
9.6 Vacuum Pump Motor (Only) Replacement
9.7 Control Valve Replacement
9.8 Vacuum Pump (Only) Replacement
9.9 Canister Replacement
9.10 Separator Replacement
9.11 Leak Test
9.2
PLC (Controller) Replacement
Safety
Use lockout / tagout procedures prior to starting work.
9.2.1
Removing the PLC
1. 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
).
2. Follow lockout & tagout procedures prior to starting work.
3. Open the VST Control Panel door for access to the PLC.
4. Loosen and remove the two terminal blocks on the top and bottom of the PLC.
DO NOT REMOVE ANY OF THE WIRES INSTALLED ON THE TERMINAL BLOCKS
.
See Figures 9-5 and 9-6
.
5. Loosen and remove the two hold-down clips on the sides of the PLC for removal.
See Figure 9-7
.
6. Remove the PLC from the front door of the VST Control Panel.
