Transfer Switch Manual

Operation
Automatic Transfer Switch Owner’s Manual 11
Section 4 Operation
4.1 — 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.
IMPORTANT: Before proceeding with functional
tests, read and make sure all instructions and
information in this section is 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.
4.2 — Manual Operation
A manual handle is shipped with the transfer switch.
See 1 in Figure 4-1. Manual operation must be
checked BEFORE the transfer switch is operated
electrically. To check manual operation, proceed as
follows:
1. Ensure the generator is in the OFF mode.
2. Turn OFF both UTILITY (service disconnect circuit
breaker) and EMERGENCY (generator main line
circuit breaker) power supplies to the transfer
switch.
3. Note position of transfer mechanism main contacts
by observing the movable contact carrier arm. This
can be viewed through the long narrow slot in the
inside cover of the ATS. The top of the movable
contact carrier arm is yellow to be easily identified.
• Manual operation handle in the UP position - LOAD
terminals (T1, T2) are connected to UTILITY
terminals (N1, N2).
• Manual operation handle in the DOWN position -
LOAD terminals (T1, T2) are connected to
EMERGENCY terminals (E1, E2).
4.2.1— Close to Utility Source Side
Before proceeding, verify the position of the switch
by observing the position of manual operation
handle in Figure 4-1. If the handle is UP, the contacts
are closed in the NORMAL (UTILITY) position, no
further action is required. If the handle is DOWN,
proceed with Step 1.
1. With the handle inserted into the movable contact
carrier arm (see A in Figure 4-1), move handle UP.
Be sure to hold on to the handle as it will move
quickly after the center of travel.
2. Remove manual operating handle from movable
contact carrier arm. Return handle to storage
bracket (see B in Figure 4-1).
Figure 4-1.
4.2.2— Close to Generator Source Side
Before proceeding, verify the position of the switch
by observing the position of the manual operation
handle in Figure 4-1. If the handle is DOWN, the
(000121)
CAUTION
Equipment damage. Perform functional tests in the
exact order they are presented in the manual. Failure
to do so could result in equipment damage.
(000132)
DANGER
Electrocution. Do not manually transfer under load.
Disconnect transfer switch from all power sources
prior to manual transfer. Failure to do so will result
in death or serious injury, and equipment damage.
(000122)
CAUTION
Equipment damage. Do not use excessive force
while manually operating the transfer switch.
Doing so could result in equipment damage.
000228
A
B