Installation Instructions

8
3.2.1 CLOSE TO NORMAL SOURCE SIDE
Before proceeding, verify the position of the switch by observing
window “A” in Figure 3.1. If window “A” reads “ON”, the contacts
are closed in the normal position, no further action is required. If it
reads “OFF”, proceed with Step 1.
Step 1: With the handle attached to the actuating shaft, move
handle in the direction of the arrow on the switch cover
until it stops — DO NOT FORCE. Release handle slowly
to allow the spring in the switch box to relax. “ON” now
appears in Window “A” and “OFF” appears in Window “B”.
3.2.2 CLOSE TO EMERGENCY SOURCE SIDE
Before proceeding, verify the position of the switch by observing
window “B” in Figure 3.1. If window “B” reads “ON”, the contacts
are closed in the EMERGENCY (STANDBY) position. No further
action is required. If it reads “OFF”, proceed with Step 1.
Step 1: With the handle attached to the actuating shaft, move the
handle in the direction of the arrow on the switch cover
until it stops - DO NOT FORCE. Release handle slowly
to allow the spring in the switch box to relax. “OFF” now
appears in Window “A” and “ON” appears in Window “B”.
3.2.3 RETURN TO NORMAL SOURCE SIDE
Manually actuate switch to return Window “A” to the “ON” position.
3.3 VOLTAGE CHECKS
3.3.1 UTILITY VOLTAGE CHECKS
1. Turn ON the UTILITY power supply to the transfer switch with
whatever means provided (such as the UTILITY maim line
circuit breaker).

PROCEED WITH CAUTION. THE TRANSFER
SWITCH IS NOW ELECTRICALLY HOT.
CONTACT WITH LIVE TERMINALS RESULTS
IN EXTREMELY HAZARDOUS AND POSSIBLY
FATAL ELECTRICAL SHOCK.
2. With an accurate AC voltmeter, check for correct voltage.
Measure across ATS terminal lugs N1 and N2; N1 to NEUTRAL
and N2 to NEUTRAL.

FAILURE TO TURN OFF THE UTILITY SUPPLY
BEFORE WORKING ON THE UTILITY CON-
NECTIONS OF THE ATS WILL RESULT IN
EXTREMELY DANGEROUS AND POSSIBLY
FATAL ELECTRICAL SHOCK.
3. When certain that UTILITY supply voltage is correct and
compatible with transfer switch ratings, turn OFF the UTILITY
supply to the transfer switch.
Operation
Figure 3.1 — Actuating Transfer Switch