Alpha Technologies CFR 3000, CFR 3000RM - Manual (Page 24)

2 Installation 18
2.4 Connecting the External Battery Pack
DANGER: There are hazardous voltages inside the battery packs. Use extreme cau-
tion. For more information on battery handling, see the safety instructions in the front of
this manual.
CAUTION:
1) Verify the pack’s polarity and voltage at the connector before attaching the cable to
the unit.
2) When a pack or batteries have been in storage for more than 6 months, they should
be recharged for at least 24 hours and then thoroughly tested with a load before installa-
tion. If after charging, a battery’s voltage varies more than 0.3 VDC from the others, do
not use it.
Tools and Materials Required:
• DC voltmeter.
• Phillips screwdriver.
Procedure:
1 Verify the battery circuit breaker is switched off. Keep it off until after the unit has been
started with line power.
2 Loosen the cover plate and slide it up to expose the connector (Figures 2.5, 2.6).
3 Verify the correct DC voltage and polarity at the battery pack’s connector. It should be
between 48 to 53 VDC.
TIP: Wrong voltages or polarities could damage the unit or the battery pack.
4 Connect the pack’s ground wire to the unit’s ground connection.
5 Connect the pack’s connector to the unit’s battery connector.
Battery Pack Connection Finished