Installation / Operation / Maintenance Manual
10/28/2019
13
Do not attempt to energize the alternate (emergency) source until the switch is operating satisfactorily on normal. With
the normal source operating, the emergency source may now be
manually
energized for testing. The emergency source
including all safety interlocks should be checked over before an attempt is made at a complete automatic systems test.
When the emergency source has been tested satisfactorily and de-energized, a test of the automatic system can now be
tried.
All Lake Shore Electric Automatic Transfer Switches are furnished with a Load Test Switch. This switch may be
installed in the PFR or mounted separately on the panel. A test of the automatic circuitry can be initiated by moving this
load test switch to the test position. This will cause the normal control circuits to de-energize and give a signal to
transfer to the emergency position.
To test the full automatic operation of the transfer switch, make sure the transfer switch is operating on the normal
source. Place the load test switch in the test position. The transfer switch will transfer to the emergency source after a
10 second time delay.
After the emergency operation has been tested, return the load test switch to the normal position. This will cause the
transfer switch to return to the preferred (normal) source after the 10 seconds time delay of the T Timer.
The above test are sufficient to place the transfer switch in operation. The following paves contain specific information
on the various components and troubleshooting information.