Operation (RXUW Models Only)
Automatic Transfer Switch Owner’s Manual 17
Section 4: Operation (RXUW Models Only)
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 NOTE: Before proceeding with
functional tests, read and understand all instructions
and information in this section. 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.
Manual Operation
See Figure 4-1. A manual handle (B) is shipped with the
transfer switch. Manual operation must be checked
BEFORE the transfer switch is operated electrically. To
check manual operation, proceed as follows:
1. Verify the generator is OFF.
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
(A) by observing the movable contact carrier arm.
This can be viewed through the long narrow slot in
the inside cover. The top of the movable contact
carrier arm is yellow for easy identification.
• 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).
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 utility (normal) 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, 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.
Figure 4-1. Manual Operation
(000121)
Equipment damage. Perform functional tests in the
exact order they are presented in the manual.
Failure to do so could result in equipment damage.
CAUTION
(000132)
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.
DANGER
(000122)
CAUTION
Equipment damage. Do not use excessive force while
manually operating the transfer switch. Doing so could
result in equipment damage.
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