Alpha Technologies USM2 - Manual (Page 8)

8
©2000 ™
704-587-B0-003 Rev.D
2. Installation
2.1 Inverter Module Removal and Installation, XM2
The XM2 Series 2 Power Supply comes with a field-replaceable Inverter Module, containing the inverter, battery charger
and control logic circuitry. The Inverter Module is designed to accept USM2 plug-in logic upgrades to facilitate remote status
monitoring. The Inverter Module can be removed while the power supply is running on line power. With the Inverter Module
removed, the power supply will continue to operate in a non-standby mode.
The Inverter Module will need to be removed to add the optional USM2 circuit board; the procedure detailed below should
be strictly followed:
CAUTION: ALWAYS switch the battery breaker OFF prior to removing the Inverter Module.
XM2 Inverter Module Removal Procedure:
1. Switch OFF the battery breaker. Disconnect the battery input, and the temp probe cables.
2. Disconnect all the cables (TMPR, XPDR, and SYS COM) as needed from the Communications Module.
3. Loosen the thumbscrews at the bottom of the Inverter Module.
4. To remove the Inverter Module: grasp ONLY the handle of the Inverter Module, pull firmly to release the
module from the connector. Slide the module assembly straight out.
XM2 Inverter Module Installation Procedure:
1. To re-seat the Inverter Module: align the metal shield in the upper and lower card-guides. Using ONLY
the Inverter Module’s handle (
absolutely apply no pressure of any kind to the front panel) firmly drive
the module back into the connectors. The connectors are designed to be made with reasonable force. The
thumbscrews are not intended to aid in making these connections, but to secure the Inverter Module to
the chassis.
2. If the Inverter Module is correctly seated the front panel Smart Display will start-up, and the “Inverter
Disconnected Alarm” will NOT be active.
3. Retighten the thumbscrews. ONLY tighten by hand, Do not use tools to tighten the thumbscrews.
4. Reconnect all the cables (TMPR, XPDR, and SYS COM) as needed to the Communications Module.
5. Verify that the battery breaker is OFF, reconnect the battery input, and the temp probe cables, and then
finally switch ON the battery breaker.
Thumbscrews
Figure 2-1; Inverter Module Installation