20
8.1 C
LEANING
Wipe the outside of the instrument with a soft, clean cloth.
Never use solvents or cleaning solutions of any type.
8.2 C
HANGING THE
B
ATTERY
To change the TMX412 battery pack:
• Hold the instrument with battery cover facing up.
• Turn the battery cover latches counter-clockwise one
quarter of a turn using the maintenance tool supplied to
release the cover.
• Gently press down on the bottom of the battery pack to
release the top contacts.
• Grasp the battery along the edges and lift out.
• Insert replacement battery, and replace battery cover.
• Turn the latches one quarter turn in the clockwise
direction to secure the battery cover.
The instrument display will return to the LOG TIME
mode and the display will indicate that the log time (LT)
will be reset to 00:00. The TWA and STEL values for all
toxic sensors will also be reset to zero.
If there is insufficient memory to log approximately 12
hours of data when the hygiene function is reset, the real
time clock value will be displayed as RTOR:OR.
When the data memory is full, both the real time and log
time will be displayed as OR:OR.
The data memory may be cleared when full by performing
a hygiene reset as described above. All currently stored
data will be overwritten. The stored data may be down-
loaded using the TMX hygiene software.
R T 0 6 : 4 5
L T 0 0 : 0 0
R T O R : O R
L T 0 0 : 0 0
R T O R : O R
L T 0 R : 0 R
8.
M
AINTENANCE
21
WARNING: When changing lithium battery cells,
replace the cells within the lithium battery pack in a non-
hazardous location. Replace the lithium cells with three Duracel
DL123A or three Panasonic CR123A or three Sanyo CR123A
3.0 volt lithium battery cells only. Use of another battery may
present a risk of fire or explosion.
WARNING: Lithium battery cells may explode if
mistreated. Do not recharge, disassemble, or dispose of in
fire. Do not charge the replaceable lithium battery pack either
while it is installed in, or removed from the instrument.
WARNING: The 1704-9889 replaceable lithium
battery pack is not approved for use in applications or
areas requiring MSHA approval.
WARNING: Australian TMX412, p/n 1810-2434, is to
be used with Nicad battery pack p/n 1705-4735 only.
8.3 O
PENING THE
I
NSTRUMENT FOR
S
ERVICE
• Remove the battery cover and battery.
• Remove the three screws that hold the instrument case
halves together.
• Grasp the bottom half of the instrument with one hand.
Using the other hand, lift the top until it clears the
sensors. Then place it face down next to the instrument.
Use care not to damage the flex cable connecting the
case top to the main circuit board.
8.4 R
EPLACING
W
ATER
B
ARRIERS
When the sensor water barrier becomes clogged or
damaged, it is necessary to replace them.
To replace the watter barrier:
• Lift the water barrier and filter screen from inside the top
case half and remove.
• Place the new water barrier and filter screen in the top
case half.
!
!
!
!
8.5 I
NSTALLING OR
C
HANGING
S
ENSORS
• Open the instrument as described.
• Carefully remove the sensor shroud by lifting it
straight up.
Содержание TMX412
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