TP-5660 11/9818 Scheduled Maintenance
Hazardous voltage.
Can cause severe injury or death.
Disconnect power sources before
servicing. Install barrier after
adjustments, maintenance, or
service.
(under 600 Volt)
WARNING
Hazardous voltage.
Will cause severe injury or death.
Disconnect power sources before
servicing. Install barrier after
adjustments, maintenance, or
servicing.
(600 Volt and above)
DANGER
Hazardous voltage.
Movingrotor.
Can cause severe injury or death.
Operate generator set only with all
guards and electrical enclosures in
place.
WARNING
Grounding the transfer switch. Hazardous voltage can
cause severe injury or death. Electrocution is possible
whenever electricity ispresent. Open maincircuit breakers of
all power sources before servicing equipment. Configure the
installation to electrically ground the transfer switch and
related equipment and electrical circuits to comply with
applicable codes and standards. Never contact electrical
leads or appliances when standing in water or on wet ground,
as the chance of electrocution increases under such
conditions.
Short circuits. Hazardous voltage/current can cause
severe injury or death. Short circuits cancause bodily injury
and/or equipment damage. Do not contact electrical
connections with toolsor jewelry whilemaking adjustments or
repairs. Remove wristwatch, rings, and jewelry before
servicing equipment.
Servicing the transfer switch. Hazardous voltage can
cause severe injury or death. Deenergize all powersources
before servicing. Open main circuit breakers of all power
sourcesto thetransferswitch and disable allgeneratorsetsas
follows: 1) Move all generator set master controller switches
to the OFF position. 2) Disconnect power to all battery
chargers. 3) Disconnect all battery cables,negative (--) leads
first. Reconnect negative (--) leads last when reconnecting
battery cables after servicing. Follow these precautions to
prevent starting of generator sets by an automatic transfer
switch, remote start/stop switch, or engine start command
from a remote computer.
Servicingtransfer switch controlsand accessories within
the enclosure. Hazardous voltage can cause severe
injury or death. Disconnect transfer switch controls at the
inline connector to deenergize the circuit boards and logic
circuitry but allow the transfer switch to continue to supply
power to the load. Disconnect all power sources to any
accessories mounted within the enclosure but which are not
wired through the controls and deenergized by inline
connector separation. Test circuits with a voltmeter to verify
that they are unpowered before servicing.
NOTICE
When replacing hardware, do not substitute with inferior
grade hardware. Screws and nuts are available in different
hardness ratings. AmericanStandard hardware uses aseries
of markings and metric hardware uses a numeric system to
indicate hardness. Check markings on bolt head and nuts for
identification.
NOTICE
Hardware damage! Transfer switch may use both American
Standard and metric hardware. Use the correct size tools to
prevent rounding of bolt heads and nuts.
NOTICE
Electrostatic discharge damage! Electrostatic discharge
(ESD) damages electronic circuit boards. Prevent
electrostatic discharge damage by wearing an approved
grounding wrist strap when handling electronic circuit boards
or integrated circuits. An approved grounding wrist strap
provides a high resistance (about 1 megohm), not a direct
short, to ground.
4.1 Inspection and Service
Contact an authorized service center to inspect and
service the transfer switch when any wear, damage,
deterioration, or malfunction of the transfer switch or its
components is evident or suspected.
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