Alpha XM 6015 Series Operations Instructions download pdf (Page 35)

6.7 Battery Installation and Wiring

WHENEVER INSTALLING OR REPLACING BATTERIES, DO NOT ALLOW LIVE BATTERY

WIRES TO CONTACT THE ENCLOSURE OR THE POWER MODULE CHASSIS. Insulate any

exposed wire ends with electrical tape. Shorting battery wires could result in a fire or possible

explosion. Make sure that the power module’s battery circuit is deactivated by switching the

battery breaker OFF, or removing the battery fuse.

WEAR EYE PROTECTION WHENEVER WORKING WITH BATTERIES.

MAKE SURE THAT ALL BATTERY TERMINAL CONNECTIONS ARE TIGHT. One major

battery manufacturer recommends that terminal connectors be torqued to 75 inch-pounds at

installation and then re-torqued to 60 inch-pounds during routine maintenance. Loose

connections will cause the unit to operate improperly. Use an approved battery terminal coating

such as NCP-2 to protect the terminals. If custom battery cables are made, they should be #8

AWG or larger and as short as practical. Battery terminals should be checked for corrosion and

cleaned if necessary.

CHECK BATTERY POLARITY. Polarity identifications are clearly marked at the module's

battery connector. A single battery connected backwards may go unnoticed until it is required

to perform. In the event polarity becomes accidently reversed at the batteries, the battery circuit

breaker will trip to protect the module.

IN ADDITION TO VOLTAGE CHECKS, ALWAYS INSPECT BATTERIES FOR SIGNS OF

CRACKS, LEAKS OR SWELLING. If a battery has one or more defective (shorted or high

impedance) cells, erratic operation or failure to provide standby power will result.

ALWAYS USE NEW BATTERIES WHEN FIRST INSTALLING A POWER SUPPLY. VERIFY

THAT THEY ARE THE SAME TYPE OF BATTERY WITH AN IDENTICAL DATE CODE.

NEVER INSTALL OLD OR UNTESTED BATTERIES.

Whenever batteries have been in storage for more than 3 months, they should be recharged for

(at least) 24 hours and checked under load prior to installation. Batteries with date codes older

than 2 years should not be used unless thoroughly recharged and tested.

Procedure: (Refer to the Battery Wiring drawing located at the back of the manual)

1. Place the batteries with the positive terminals forward on the enclosure’s shelf or slide

tray. Position the batteries with maximum ventilation space between them (+/- 1").

2. Interconnect the three batteries in series (negative to positive). The optional in-line

fuse if included, should be connected to the positive terminal on the right-hand battery.

3. Switch the module's battery breaker OFF to deactivate the DC circuit. Insert the

battery cable's red and black quick-connects into the module's color-coded connector.

Route the lugged ends of the cable through the grommeted holes in the enclosure’s

shelf and into the battery compartment. Connect the red cable (+) to the positive

terminal of the left-hand battery. Connect the black cable (-) to the negative terminal

of the right-hand battery.

4. Use a voltmeter to verify polarity and DC voltage at the module's battery connector.

Caution: Whenever making or breaking battery connections, never allow live battery

cables to contact the chassis. If necessary, wrap the lugs with electrical tape to

prevent arcing and temporarily disconnect one of the leads from the center battery.

5. Number the batteries 1 - 3 (left to right) using labels or masking tape. Record each

battery’s number and date code in the power supply's maintenance log.

6. The charger utilizes a remote temperature sensor (RTS) to provide precise battery

charger temperature compensation information. Uncoil the cable and plug the con-

nector into the (upper) jack on the Main Module Assembly. The connector is keyed

and fits in one direction only. Route the sensor end of the cable into the battery

compartment and attach it to the side of the center battery using a high-strength

adhesive tape (see opposite page). In the event the sensor is disconnected, a

secondary sensor located on the main board provides temperature compensation

based upon ambient temperature.

Do not reset the battery breaker until the module is running on AC LINE power.

6. INSTALLATION

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Alpha XM 6015 Series Operations Instructions Page 35

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