User guide

TS 870 TRANSFER SWITCH
PM062 REV 5 08/05/05 12 Thomson Technology
to remove utility control power. To isolate the generator supply, remove
the control circuit isolation plug. Note: The AC power conductors will still
remain energized. Once all the control circuits are de-energized and
isolated the "Service Disconnected" pilot light will not illuminate due to loss
of control power.
Note: To return the transfer switch back to normal operation, the utility
control circuit disconnect switch and control circuit isolation plug must be
switched on and reconnected for correct operation.
3. If the position of the transfer switch mechanism is not in the "neutral
position", manually operate the transfer switch mechanism depending on
mechanism type as follows:
Note: Refer to product drawings in sections 12, 13 & 14 for identification of
Transfer Switch Mechanism style supplied with the Transfer Switch.
a. T-Style Mechanism: Pull the manual release plunger on
the mechanism, releasing the motor drive rod from motor
drive arm and move the knob and yoke to the marked
“neutral position”.
b. S-Style Mechanism: Insert the operating handle into the
front of the transfer mechanism and turn the operating
handle until the position indication on the mechanism
clearly shows the “neutral position”.
WARNING!
Failure to move the mechanism to the Neutral
Position may result in serious personal injury
or death due to electrical shock.
4. Close the transfer switch door securely using a suitable tool. Lock the door
in the closed position and remove the key.
WARNING!
Failure to positively lock closed and secure the
transfer switch door may result in serious
personal injury or death due to electrical shock.