Product Manual

5. Transfer Switch Service 3-2016

FIGURE 30. RA 100A/200A CIRCUIT BREAKER

2. RA 400A service entrance transfer switch models only:

a. Remove all sources of power from the transfer switch in the following order.

i. Move the operation selector switch on the generator set to Stop (Off).

CAUTION

Always disconnect a battery charger from its AC source before disconnecting the

battery cables. Otherwise, disconnecting the cables can result in voltage spikes

high enough to damage the DC control circuits.

ii. If there is an external battery charger, disconnect the battery charger from its AC power

source.

WARNING

Ignition of explosive battery gases can cause severe personal injury. Do not

smoke or cause any spark, arc, or flame while servicing batteries.

WARNING

Accidental starting of the generator set can cause severe personal injury or death

due to electrocution or contact with moving parts. Disconnect the starting battery

cables, before performing service. Batteries emit hydrogen, a highly explosive

gas. Thoroughly ventilate the battery compartment before removing battery

cables. Remove the negative (-) cable (s) first to reduce the risk of arcing.

iii. Disconnect the generator set starting battery (negative [-] lead first).

WARNING

If the cabinet must be opened for any reason, remove AC power to the automatic

transfer switch. If the instructions require otherwise, use extreme caution due to

the danger of shock hazard.