F3 Series Charger Manual
3
1
Overview
This manual covers installation, operation and troubleshooting of SENS model F3 filtered battery charger.
1.1
READ THIS FIRST
Please follow the installation and use instructions. They are vital to the satisfactory operation of the
charger. If you have any doubts about adjusting, maintaining or servicing the equipment, contact SENS
service department.
Changing factory-set potentiometers
voids the warranty.
Contact the factory if you believe that the
settings on your charger are incorrect.Before determining that the charger is not working correctly, check
the following:
1. Are three phases of AC power available to the charger?
2. Are any circuit breakers tripped or fuses blown?
3. Is the charger connected to a battery of the correct voltage?
4. Was the charger damaged in transit or installation?
5. The charger may have shut down to excessive output voltage. To ensure that the high volt shutdown
has been reset, turn off both the AC input breaker and DC output breaker for five minutes. This is
more than sufficient time for the DC voltage to decay and reset the shutdown.
6. If the battery is being over- or undercharged, check whether the output voltage settings have been
tampered with. The pots should be covered with either white adhesive paper dots or a hard colored
varnish.
Under no circumstances change the adjustment of control board pots other than R33 and
R34.
1.1
Description and Application
The F3 is a fully automatic battery charger and DC current source offering the following features:
• Constant voltage output
• Electronic current limiting
• Filtered output (on battery rated in AH four times amp rating of charger): 12, 24, 48V: 30 mV rms; 110,
120V: 150 mV rms; 144,
240V: 300 mV rms
• Filtered output without battery: 12, 24, 48V: 100 mV rms
• With optional filter for 110 & 120V models: 30mV rms on battery, 300mV without battery
• Temperature compensation to maximize battery performance and life
• Circuit breakers for AC input and DC output
The chargers are designed to supply equipment requiring a low ripple DC source and to automatically
recharge and maintain a parallel connected lead-acid or nickel-cadmium battery.
1.2
Upon Delivery
Inspect the charger for damage caused during transit, and report damage to the carrier immediately. Then
contact SENS to determine how best to repair/replace the damaged unit.
