4.5 - GREEN MACHINE
™
- North America - Installation, Operation, Maintenance, & Troubleshooting Manual
Chapter 8: Troubleshooting
Page 124
8.4.2
Option 1: Control Panel is Powered from Distribution Panel
Steps
Procedures
1. Verify that the Breaker for the VST Control Panel in the main power distribution panel
is ON. If not, turn the breaker ON.
See Figures 8-5 & 8-6
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 supply 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 8-5 & 8-6.
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 on the field connections section of the VST Control
Panel.
See Figure 8-6.
e) Verify that the 115 VAC Over/Under Voltage Relay is adjusted to 118 VAC or at
the local voltage.
See Figure 8-10.
4. Check to see if the Safety Disconnect Switch at the GREEN MACHINE is turned ON. If
not, turn ON the switch. If the switch has a Lockout/Tagout lock, do not remove the
lock and leave the switch OFF. Someone is preforming maintenance.
