4.5 - GREEN MACHINE
™
- North America - Installation, Operation, Maintenance, & Troubleshooting Manual
Chapter 8: Troubleshooting
Page 126
8.4.3
Option 2: Control Panel is Powered from ESO Breaker
Steps
Procedures
1. Note that the VST Control Panel is powered through the ESO breaker.
See Figures 8-7 & 8-8.
2.
Check that the Power Switch on the front of the Control Panel is ON. If not, turn it ON.
See Figure 8-9.
3. The VST Control Panel must be supplied 115 VAC power through an Emergency Shut-
Off (ESO) dry relay for the VST Control Panel to have power and for the GREEN
MACHINE to operate.
See Figures 8-7 & 8-8.
a) Verify the VST Control Panel is connected to the station ESO.
b) Verify the ESO is not engaged. If the ESO is engaged the GREEN MACHINE will
not have 115 VAC power.
c) Verify all the wire connections from the VST Control Panel to the ESO are
correct and tight.
d) Verify the ESO circuit has 115 VAC power from the VST Control Panel across
terminals 02011 and 02032 by checking the continuity of the jumper.
See Figure 8-8.
e) Verify that the 115 VAC Over/Under Voltage Relay is adjusted to 118 VAC or at
the local voltage.
See Figure 8-10.
