Simrad PI50 - REFERENCE MANUAL REV A Reference Manual page 201

Even though the PS Charger is designed for charging the PS sensors, it can also charge
the PI sensors, but only at normal charge rate.
WARNING
Charging a sensor at sub zero temperature might develop explosive
gases representing a potential danger. Simrad assumes no liability
for improper charging, or the use of other chargers than those
approved by us.
Daily operation
Observe the following procedure for daily operation.
Connect the charger to 230 Vac or 115 Vac.
1
The AC voltage required by the charger is printed on the panel.
2 Attach the charging clamps to the sensor as follows:
• Red clamp: Positive (+) fastening lug
• Black clamp: Negative (–) fastening lug
• On every sensor the polarity of the fastening lugs are engraved on the sensor
body using + and – characters.
3 Ensure that mounting materials do not short circuit the charging lugs.
• This may be ropes, wires, chains or other items that obstruct or short circuit the
electrical connections.
4 When the charger is connected to the sensor, check the charger lamps.
• It will flash once every four seconds during charging.
Observe the charge times and temperature limitations!
5
• ~16 hours for full battery capacity.
• Charging must only take place within the specified temperature range. For best
results, keep the ambient temperature between +10 and +25°C.
Note
Do not charge sensors in temperatures above +50°C or below 0°C!
Battery depleted frequently
If the charger lamp is illuminated, but the sensor lamp does not flash every four seconds,
the battery is not being charged properly. Most likely, this is because the sensor was not
switched off when the charger was connected.
To correct, charge the sensor for ten minutes, then disconnect the alligator clips. Use a
small wire, and make contact between the water switch sensor and one of the fastening
lugs. This will cause the sensor to flash its start-up code. If not, wash the sensor in
fresh water to disengage the water switch.
328458/A
PI50 sensors
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