Vaisala GM70 - Manual (Page 17)

Chapter 3 ________________________________________Preparations Before Use
VAISALA __________________________________________________________ 17
CHAPTER 3
PREPARATIONS BEFORE USE
This chapter describes the procedures required before use.
Recharging the Batteries
1. If using alkaline batteries, unscrew the back plate of the indicator
and insert the batteries. Note that while possible, the use of alkaline
batteries is not recommended. If the GM70 is ordered with a
rechargeable battery pack, the battery pack is already in place as
shipped from the factory.
2. Recharge the battery pack as follows: Plug in recharger to the
recharger connector of the indicator and connect the recharger to
wall socket. A battery symbol in corner of display starts to roll.
- It is not recommended to use the GM70 during the first
recharging. Later on the GM70 can be used while recharging.
- Duration of recharging depends on the charge level of the
battery pack being 4 hours typical. The recommended first
recharging time is 6 hours.
3. The battery pack is full when the battery symbol stops to roll.
4. Disconnect the recharger.