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8.
MAINTENANCE
8.3 NiMH BATTERY PACK INSTALLATION
Refer to
Section 8.1 Battery Installation
.
1)
Remove existing battery pack.
2)
Insert the MPRO NiMH rechargeable battery pack into battery compartment as
shown. (See Figure 16). The connector end faces the rear of the instrument where it
makes electrical contact. Once the end with the connector is pushed in, the rear of
the battery pack may now be pushed down.
3)
Push down cover and secure with a half turn clockwise on screw.
4)
Charge instrument prior to use.
8.4 NiMH BATTERY GENERAL INFORMATION
The supplied NiMH battery pack represents the latest in battery technology, and as an
added benefit, does not have the environmental problems associated with Nickel
Cadmium technology.
It should be left on charge when not in use. There is a small current drain on the pack.
8.5 SENSOR REPLACEMENT
1)
Turn off the instrument and remove the 4 screws (See Figure 17) securing the top
half of the case.
2)
Disconnect battery pack connector by lifting it straight up.
3)
Remove the single screw securing the gas plate (See Figure 17).
4)
Remove sensor by lifting it straight up.
5)
Toxic sensors include a small wafer-thin printed circuit board as part of the sensor
assembly. Make sure that this board is removed with the sensor.
6)
If installing a new toxic sensor, it is necessary to remove any shorting clip or spring
attached to the sensor pins.
7)
Align pins of new sensor with sockets and push down to secure sensor.
8)
Reconnect gas plate and secure with screw.
9)
Reconnect battery connector.
10) Install case cover and secure with 4 case screws.
11) Allow sensors to stabilize for 15 minutes prior to turn-on.
12) Calibrate the instrument.
M U L T I G A S D E T E C T I O N
8.
MAINTENANCE
8.1 BATTERY INSTALLATION
Open battery compartment by turning the screw (See Figure 15) a half turn
counterclockwise to release.
8.2 ALKALINE BATTERY PACK INSTALLATION
Refer to
Section 8.1 Battery Installation
.
1)
Remove existing battery pack.
2)
Insert 4 approved alkaline cells into the supplied alkaline battery holder. Observe the
polarity indicated in the holder when inserting each cell.
3)
Insert alkaline battery holder, with 4 approved AAA cells, into the battery
compartment. Observe battery pack contacts orientation (See Figure 16). This means
that the connector end faces the rear of the instrument where it makes electrical
contact. Once the end with the connector is pushed in, the rear of the battery pack
may be pushed down.
4)
Push down cover and secure with a half turn clockwise on screw.
CAUTION
Use only MPRO NiMH rechargeable battery pack or MPRO alkaline battery holder with 4
each of the following alkaline cells only: Duracell Pro-cell-2400, Duracell MN-2400 and
Eveready E-92 or EN-92. Observe proper polarity when installing alkaline batteries.
Do not change batteries in a hazardous location.
Figure 15
Battery Compartment
Figure 16
Battery Pack Orientation
1/2 turn to release
