MBA Instruments MLA 900, Operating Instructions Manual

Page: 29 / 40

Maintenance
MLA 900 Operating Instructions V 2.0 8011381 © MBA Instruments GmbH 29
5.2
Battery
Check
When the life of the built-in battery comes to an end, the message
BAT
is indicated on the
display.
b
Whenever you open the display unit, check if
BAT
is indicated.
Replacing the battery
1 Undo the 8 screws at the rear of the display unit.
2 Lift the upper section of the enclosure on the left-hand side.
➝
The battery is located in the lower section.
3 Detach the battery cable from the electronics (pin-and-socket connector) and remove
the battery.
4 Check the enclosure seal.
b
If the seal is damaged: replace the seal (spare parts
→
S. 30, §5.3 ).
5
Insert the new battery and connect the battery cable.
6 Screw the enclosure back together. Make sure
– that the enclosure seal is correctly positioned
– that no cables are pinched.
7
Carry out a performance test (
→
S. 21, §4.3 ) – Caution: for safety reasons, make this first
performance test after battery replacement outside hazardous locations.
HINWEIS: Risk of damage by leaking battery
Caustic liquid could escape from the spent battery and could damage the
electronics of the display unit.
b
Remove a spent battery as soon as possible.
b
Replace the built-in battery at the latest after 3 years.
b
Note in a suitable place when the battery was last replaced.
WARNUNG: Risks in explosion-hazardous locations
b
When using the MLA 900 in hazardous locations, use only batteries of the
original type (
→
S. 30, §5.3 ).
⊗
Never open the enclosure inside a hazardous location.