Installation Instructions

6
2.6 CONNECTION OF POWER
SUPPLY FOR CONTACTORS
The Overload Prevention Control Board (OPCB) can be powered
from either a 24 Vac or 120 Vac power supply. The 24 Vac sup-
ply is from a class 2 transformer that can be purchased from the
manufacturer. Mounting holes are provided in the enclosure sub-
plate for mounting of the transformer. The 120 Vac supply is fused
at 5 amps and is factory connected to OPCB terminals labeled "T1
and "Neutral".
2.6.1 24 VAC SUPPLY
Transformer connection are made as shown in Figure 2.3
• Blue wire - OPCB "LOAD SUPPLY 1" terminal
• Black wire - OPCB "T1" terminal
• White wire - OPCB "NEUTRAL" terminal
• Yellow wire - OPCB "LOAD SUPPLY 2" terminal
2.6.2 120 VAC SUPPLY
Install the following jumpers on the OPCB (Figure 2.4).
• Load Supply 1 to T1
• Load Supply 2 to Neutral

Load supply voltage on the OPCB terminals
must match the PMM contactor coil voltage, or
the equipment will be damaged.
Figure 2.4 — 120 Vac Supply Connections
3.1 FUNCTIONAL TESTS AND
ADJUSTMENTS
Following transfer switch installation and interconnection,
inspect the entire installation carefully. A competent, qualified
electrician should inspect it. The installation should comply
strictly with all applicable codes, standards, and regulations.
When absolutely certain the installation is proper and correct,
complete a functional test of the system.

Perform functional tests in the exact order
presented in this manual, or damage could be
done to the switch.
IMPORTANT: Before proceeding with functional tests, read and
make sure all instructions and information in this section are
understood. Also read the information and instructions of labels
and decals affixed to the switch. Note any options or accessories
that might be installed and review their operation.
Operation
0 Ground
194 +12V
23 Transfer
T1
NEUTRAL
A/C 1
24V
A/C 2
24V
LOAD 1
LOAD 2
LOAD 3
LOAD
4
A/C 1 & LOAD 1
LOAD
SUPPLY
LOAD
SUPPLY
1
2
1
2
2
2
2
1
1
1
1A MAX
1A MAX
1A MAX
1A MAX
A/C 2 & LOAD 2
LOAD 3
LOAD 4
Blue
Black
White
Yellow
Factory
wiring
Transformer
leads
Field installed
Existing
wiring
Figure 2.3 — 24 Vac Supply Connections