To secure trouble-free operation of the rangefinder:
-be prompt in replacing the rechargeable battery by freshly charged when the red LED in the
-keep the range finder dry at all times especially in the cold season of the year;
-after exposure to subzero temperatures keep the range finder at room temperature for at least two hours before unpacking and then mop up the condensed moisture;
-while operating the range finder at temperatures above 35˚ C and exposing to direct sunrays, attach cover AEP 42.63.021 taken from individual SPTA set to keep away sunlight. Moistening the cover with water is permitted to cool off the range finder.
After replacement of emitter and (or) control circuit board make entries in Section 4 of this manual as to their new serial numbers and basic characteristics.
-Charged as described under 15.3;
-Discharged by setting the toggle switches to the
DISCHARGE and MAIN positions until the DISCHARGED light diode flashes on and off to indicate the discharged condition. Charge up the operating voltage for 15 hours as described under 15.3.
15.3.3.The battery that has been stored in the discharged condition for over 3 months is subject to two processing cycles before use.
Cycle 1
- Charging for 24 hours with the toggle switches set to the CHARGE and PREPARATORY positions on the charging device;
- Discharging with the toggle switches in the DISCHARGE and PREPARATORY positions, until the LED labelled DISCHARGED flashes.
Cycle 2
- Charging as directed under 15.3.;
- Discharging with the toggle switches set to the DISCHARGE and MAIN positions on the charging device, until the DISCHARGED diode flashes.
If the minimum discharging time is 5 hours, charge the battery up to the operating voltage as directed in 15.3.
If the discharging time is between 5 and 3.5 hours, subject the battery to another Cycle 2 as described in 15.3.3, then charge it up to the operating voltage as described in 15.3.1.
It’s prohibited to use the battery, if the discharging time was under 3.5 hours.