Changing Alkaline Batteries; Carrying Out The Fresh Air Calibration - Dräger X-am 7000 Instructions For Use Manual

Operational characteristics
4.10

Changing alkaline batteries

WARNING
!
Explosion hazard!
Do not change the batteries or Alkaline Battery Pack
underground or in explosion-hazard areas.
Do not throw used batteries into fire or try to open them
by force.
Switch off the instrument.

1. Loosen the two screws on the
bottom of the instrument.
Remove the alkaline power

pack from the instrument.
Loosen the four screws on

the battery compartment and
open the cover.
Replace the exhausted

batteries with new ones.
Observe the polarity when inserting the new batteries!
Assemble the alkaline power pack in the reverse order and insert

it in the Dräger X-am 7000.
Only the following batteries (C-Size, round cell, LR14) can be used
with the alkaline power pack:
– Energizer, E93
or
– Duracell Plus, MN140C
The use of other batteries will invalidate the explosion-protection
approval!
52
After the batteries have been replaced:
The settings and data are

stored when the battery is
replaced. The sensors are still
supplied with power.
If the power pack is

disconnected from the
instrument for a long period,
the sensors warm up when the
power pack is connected again.
4.11

Carrying out the fresh air calibration

for improved measuring accuracy
– To improve the zero point accuracy, you can carry out a fresh air
calibration/zero point adjustment.
– Calibrate the instrument in fresh air which is free of the gases to
be measured and gases which could interfere with the calibration.
1
Do not calibrate the instrument indoors (in a workshop, office, etc.)
00523725_1.eps as the CO
– All sensors which can be calibrated – no warning icon »
display – are included in the fresh air calibration. Faulty sensors
and sensors which have not yet warmed up are skipped.
– Fresh air calibration adjusts the zero points of all sensors (except the
sensors for oxygen and CO
For the oxygen sensor only, the sensitivity is set to 20.9 Vol.-% O
With the instrument switched on, briefly press the » ▼ « key.

In the "Quick menu" which then appears, use the » ▼ « key to

select "Fresh air cal".
– The scope of the "Quick menu" can be selected and may vary
depending country (see the "Dräger X-am 7000 Technical Manual".
level may be higher.
2
) to 0.
2
01123725_1.eps
« in the
.
2
Dräger X-am 7000