TAL 0110 (L) Rev. 8 - 10020949
TEST METHOD FOR OPTIMAIR MM 2K
TEST METHOD FOR THE OPTIMAIR
MM 2K PAPR
The test method should only be used if
any one of the OptimAir MM 2K PAPR
components (charger, battery pack, or
motor-blower) is not functioning properly.
This method will outline the steps need-
ed to evaluate the proper electrical func-
tions of each of the components of the
MM 2K. A Digital Multimeter is required.
Testing the Charger:
The MM 2K comes standard with a dual-
rate smart-charger. This charger has a
status indication LED. There is no testing
of the charger. The LED will indicate if
there is a problem during charging.
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LED Color Status Description
Red Rapid Charge Charger is supplying maximum current
to battery pack for charging.
Green Charge Complete Battery Pack is charged and a
maintenance charge is being delivered
to offset self-discharge.
Amber Charge Pending Battery Temperature is outside the
charge range. If the battery is too hot,
charge will not begin until temperature
falls. If temperature is too low, charger
will trickle charge until the battery
temperature increases sufficiently
to begin rapid charge.
Red Flash Charge Failure Charger failure can occur in any one of
four ways:
1) No Thermistor – This will be checked
in the battery pack test.
2) No Voltage – This will be checked in
the battery pack test.
3) Clock Time Out – This occurs when
charger fails to transition to
maintenance charge from rapid
charge. In this case the clock turns
the charger off before cell damage
can occur.
4) Over Temperature – This can occur if
the batteries become too hot during
rapid charge.
*If the charger fails, refer to "Testing the
Battery Pack" section. You will need to
determine if the battery pack or the
charger is bad.
Off No AC/Battery If the LED is off then the unit is not
plugged in, or there is no battery
attached to the charger.
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