MSA OptimAir MM 2K, User Instructions

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TAL 0110 (L) Rev. 8 - 10020949
TEST METHOD FOR OPTIMAIR MM 2K
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 indication 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. (An MSA wall mount-
ed Flow Tester p/n 488903 or the
adapter p/n 491046 and 487995 is
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 deter-
mined 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 MM 2K 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 1
and the negative probe on pin 2.
4. The resistance should be less than
10W.
25
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