TESTO 330 - Charging the Rech. Batt; Mains Operation

5 First steps
34
5.2.1.2. Charging the rech. batt.
The rech. batt. can only be charged at an ambient temperature of
±0...+35 °C. If the rech. batt. has been discharged completely, the
charging time at room temperature is approx. 5-6 hrs.
Charging in the measuring instrument
1. Connect the plug of the mains unit to the mains unit socket on
the measuring instrument.
2. Connect the mains plug of the mains unit to a mains socket.
- The charging process will start. The charge condition will be
shown on the display. The charging process will stop
automatically when the rech. batt. is fully charged.
Charging in the charging station (0554 1087)
> Refer to the documentation enclosed with the charging station.
Rech. batt. care
> Do not fully exhaust rech. batts.
> Store rech. batts. only in charged condition and at low
temperatures, but not below 0 °C (best storage conditions with
a charge level of 50-80 %, at an ambient temperature of
10-20 °C, recharge completely before use).
> For longer breaks you should discharge and recharge the rech.
batts. every 3- months. Trickle charging should not exceed
2 days.
5.2.1.3. Mains operation
1. Connect the plug of the mains unit to the mains unit socket on
the measuring instrument.
2. Connect the mains plug of the mains unit to a mains socket.
- The measuring instrument is powered by the mains unit.
- If the measuring instrument is switched off and a rech. batt. is
inserted, the charging process will start automatically. Switching
the measuring instrument on has the effect of stopping rech.
batt. charging and the measuring instrument is then powered
via the mains unit.
For longer measurements that are mains-operated, Testo
recommends using a combustion air temperature probe
with connecting cable. Self-heating of the instrument
during mains operation may influence the combustion air
temperature measurement with a mini ambient air probe.