3M 950 Series Quick Start Manual

3M ™ Multi-Gas Detector 950 Series – Battery Maintenance
The battery must be replaced in a non-hazardous area only. Battery replacement is not an
intrinsically safe operation.
The detector may be operated with an alkaline battery pack or a nickel metal hydride
battery pack. The battery packs are interchangeable. The detector will recognize a new
type of battery pack upon start up.
See the user instructions for a list of approved batteries and model number. The 3M™
Nickel Metal Hydride (NiMH) Battery 921-022-000 and Energizer® EN91 Battery will
be shown in this video demonstration.
The Nickel Metal Hydride Battery should be replaced when the detector indicates a
low power or replace battery condition or according to an establish change schedule. To
remove it:
a) Turn off the unit.
b) Unscrew the two retaining screws located at the base of the detector.
c) Loosen the battery pack and remove it from the detector.
d) Dispose of the NiMH battery pack in accordance with local regulations. The
NiMH is not designed to be repaired and the entire pack must be replaced as
needed.
e) Insert the battery pack back into the base of the detector.
f) Secure the pack with the two retaining screws, ensuring they are properly
tightened.
Proper operation is indicated by a "POWER ON" message on the LCD.
To change the alkaline batteries:
a) Turn the monitor off.
b) Remove the two screws from the base of the detector
c) Slide the plastic case out of the detector.
d) Unscrew the single retaining screw at the internal end of the battery pack.
e) Slide the plastic cover away and up from the base.
f) Replace the batteries using an approved type listed in the user instructions.
g) Insure the correct polarity is observed (polarity is marked on the inside of the
battery compartment).
h) Replace the plastic cover.
i) Secure the plastic cover with the retaining screw.
j) Insert the battery pack back into the base of the detector.
k) Secure the pack with the two retaining screws, ensuring they are properly
tightened.
Allow 30 seconds for the battery test to complete before turning on the unit to confirm
proper operation.