Data Sheet

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4. The PK250B is completely automatic and will operate on its own once installed. Controls will need to be reset only after extended
power outages or battery drain occurs.
Troubleshooting
If the PK250B fails to operate as described, check for the following:
1. Determine if power line cord is firmly plugged into a live wall outlet.
2. Check that power switch is in the ON position.
3. Check the fuses on back panel. Unscrew the black caps and remove the fuses. Check visually for proper condition. Replace in the
proper slots after checking.
Extended Power Outage
A built-in control feature protects the battery from damage due to deep discharge beyond its normal capacity. During a prolonged power
outage, the PK250B will provide power to the limit of its battery. Beyond this point, the unit will shut down the battery circuitry. If this
happens, the power switch must be turned OFF. Wait until utility power is restored and turn power switch ON. Allow 15 hours to recharge
before the unit is ready to provide power again.
Storage
When the PK250B is not in use, leave it plugged into the power supply and turn power switch OFF. This will prevent damage to battery from
discharge.