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Batteries
G1 Powered Air-Purifying Respirator (PAPR)
US
11.2 Charging Rechargeable (NiMH) Batteries
WARNING!
Use ONLY an MSA battery charger to charge the rechargeable (NiMH) batteries.
The positive and negative battery terminals are on the opposite end from the charging receptacle. To
prevent a short circuit in the battery, do NOT connect the positive and negative battery terminals
through any conductive element (including but not limited to conductive metals and liquids) without
sufficient electrical load/resistance. A short circuit can cause leakage of the battery liquid electrolyte,
heating, bursting, and fire.
Do NOT pull on the cord for the charger plug to remove it from the battery. Doing so can cause
damage to wire connections of the charger plug housing and increase the risk of electrocution.
Failure to obey these warnings can result in serious injury or death.
NOTICE
Do NOT connect the metal charging leads on the plug for the battery charger to a ground. Doing so
can cause damage to the battery charger.
In a discharged condition (after approximately 4 hours of operational use), the battery will charge for
approximately 6 hours. Charging times will be different for batteries in a partially charged state. The
best charging time is 8 hours.
(1) In a clean area (no dust) with a temperature between 32°F (0°C) and 100°F (38°C), put the
charger on a horizontally flat surface. The best temperature is 70°F (21°C).
(2) Connect the applicable power cord set (120 V or
230 V) to the IEC receptacle on the charger.
(3) Connect the power cord to the applicable regulated 120 V or 230 V outlet. When there is no
battery in the charger and during battery charging initialization, the orange LED comes on.
(4) Align and connect the keyed charger plug with the
charging receptacle in the battery. The red LED
comes on to show that the battery is in Fast Charge
mode.
(5) If the red/green LEDs come on, there is a fault condition. Do the following:
a) Remove the battery from the charger immediately. To remove the battery from the
charger, firmly hold the charger plug housing with your fingers and pull it from the battery.
Do NOT pull on the cord for the charger plug to remove it from the battery.
b) Connect a different battery to the charger. If the red/green LEDs come on again, remove
the charger from service.