Alpha Technologies AMPS80 HP - Manual (Page 10)

Doc. #: 026-069-B0 Rev F 8
• Only use insulated tools when handling batteries or working inside the enclosure.
• Remove all rings, watches and other jewelry before servicing batteries.
• Recycle used batteries. Spent or damaged batteries are environmentally unsafe. Refer to local codes for
the proper disposal of batteries.
• A disconnect switch shall be provided by others for the AC input and AC output circuits.
• Risk of Electric Shock and Fire Hazard: replace fuse with the same type and rating.
1.3 External Battery Safety
• The power system requires an over-current protection device for the external batteries. The maximum
allowable current is typically 450A but can be less depending on the model. Follow the local electrical
codes.
• Ensure that the external battery connection is equipped with a disconnect.
• If the batteries are stored for extended periods before the installation, charge the batteries at least once
every three months to ensure optimum performance and maximum battery service life.
• Refer to the battery manufacturer’s recommendation to select the correct float and equalize charge volt-
age settings. Failure to do so can damage the batteries. Verify that the battery charger’s float and equal-
ize settings are correct.
• The batteries are temperature sensitive. During extremely cold conditions, a battery’s charge accep-
tance is reduced and requires a higher charge voltage. During extremely hot conditions, a battery’s
charge acceptance is increased and requires a lower charge voltage. To allow for changes in tempera-
ture, the battery charger must be equipped with a temperature compensating system. For Hybrid UPS
configurations, refer to the rectifier manual for information about temperature compensation.
• If the batteries appear to be overcharged or undercharged, first check for defective batteries and then
verify that the charger voltage settings are correct.
• To ensure optimal performance, inspect the batteries according to the battery manufacturers recommen-
dations. Check for signs of cracking, leaking, or unusual swelling. Some swelling is normal.
• Check the battery terminals and connecting wires. Periodically clean the battery terminal connectors
and retighten them to the battery manufacturer's torque specifications. Spray the terminals with an ap-
proved battery terminal coating such as NCP-2 or No-Ox.
• Verify that the polarity of the cables are correct before connecting the batteries to the power module. The
polarity is clearly marked on the batteries. The battery breaker will trip and the rectifiers may be dam-
aged if the cables are connected with the wrong polarity.
1.4 Utility Power Connection
Connecting to the utility must be performed by qualified service personnel only and must comply with local
electrical codes. The utility power connection must be approved by the local utility before the installation.