TAL 114 (L) Rev. 4 - 10090982
TEST METHOD FOR OPTIMAIR MASK-MOUNTED PAPR
Resistance will result in an indication
of charge failure status by the charger.
In this case, the battery pack is defec-
tive and should be replaced.
Indication of charge failure status
when attempting to charge a battery
which passes these tests is an indica-
tion of charger failure and the charger
must be replaced.
TESTING THE MOTOR-BLOWER:
The function of the motor-blower can
be tested by using an MSA flowmeter
and a multimeter. (MSA adapter P/N
491046 and flow check meter P/N
487995 are required to run the flow
test)
Before Testing:
1. Examine the motor-blower for
cracks or other physical damage.
If any of these conditions exists,
replace the battery pack.
2. Using a good battery pack as
determined by the previous tests,
fully charge the battery until a full
charge is achieved.
Testing the Flow of the Motor-
Blower:
1. Assemble the motor-blower to the
battery pack.
2. Attach the motor-blower to the
flow meter per the supplied
instructions.
3. Turn on the Mask-Mounted PAPR
and notice the volumetric flow.
4. This flow must be above 115 lpm.
Testing the Resistance of the
Motor:
1. Refer to Diagram 1 for proper pin
locations.
2. Set the multimeter to measure
resistance.
3. Place the positive probe on pin 2
and the negative probe on pin 3.
4. The resistance should be less than
10W.
23
Quick Reference Chart – Battery Tests
Test
Multimeter
Positive
Negative
Switch
Value
Setting
Probe
Probe
Setting
Open Circuit Voltage
Voltage
Pin 1
Pin 2
Off/On
0 / >4.8 Volts
Switch Circuit
Open Circuit Voltage
Voltage
Pin 4
Pin 2
On or Off
> 4.8 Volts
Recharge Circuit
Thermistor Resistance
Resistance
Pin 3
Pin 2
On or Off
7K
Ω
–18K
Ω
Charger Control
Circuit
D
E
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