User's Manual

Battery Information
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SafeCheck 200 Operator’s Manual
21
5. BATTERY INFORMATION
5.1 Replacing or Installing the Batteries
Turn the unit off before performing this operation. Please dispose of old
batteries in an appropriate manner.
Three different removable battery packs are available for your SafeCheck
200. Sealed packs containing rechargeable NiCad (Nickel Cadmium) or
NiMH (Nickel Metal Hydride) batteries are available as well as a pack,
which will hold two disposable "C-size" alkaline batteries. These battery
packs, which are labeled as to which type they are, are interchangeable and
the packs can be removed from the unit and replaced while in a hazardous
environment.
Caution: Only fully assembled alkaline packs may be removed or
replaced in a hazardous environment. Alkaline packs may not be opened
for battery replacement in a hazardous environment. In addition, any
attempt to use rechargeable batteries in the alkaline battery pack will void
any intrinsic safety approvals and substantially reduce unit
Battery Information
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SafeCheck 200 Operator’s Manual
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Caution: Any time the battery pack is removed and then replaced,
your unit is designed to turn itself on. This is to insure that, in the case of
an accidental power interruption, the unit comes back on to safeguard
worker protection. Therefore, any time that the battery pack is removed
and then replaced, it is necessary to manually turn off the unit unless you
are going to immediately use the instrument.
The unit should be turned off before changing a battery pack. The pack is
held in firmly by two spring clips located on either side of the battery. To
remove the pack, depress the two spring clips and pull the pack away from
the main housing. To replace the battery pack, position the pack such that
contacts on the pack are in line with the pins in the housing and gently push
the main housing and pack together until both spring clips lock in place.
The pack is keyed so it only goes in one way.
5.2 Low Battery Warnings
When the battery voltage is reduced to approximately 2.2 volts, the alarm
will sound and the display will indicate "**LOW BATTERY** ALARM".
At this point the battery alarm can be silenced up to two times for a period
of one minute each before the alarm will turn on and stay on until the unit is
shut off. When low battery is indicated, you need to shut the unit off and
replace or recharge the battery pack.
If operation of the unit is continued until the battery voltage gets down to
2.1 volts, the alarm will sound and the display will indicate "DEAD
BATTERY SHUTDOWN". At this point the alarm cannot be silenced and
it will stop monitoring the environment. When this occurs you need to turn
the unit off and replace or recharge the battery pack. If this is not done, after
approximately thirty seconds the unit will turn itself off. This extra
protection feature is included to provide an orderly shutdown of the
program that controls the unit and ensure that essential values are saved in
the unit's memory.
5.3 Recharging NiCad and NiMH Battery Packs
We provide a charging station for the reconditioning of these battery packs.
The battery packs may be charged with the Quest MultiCharger II either as
part of the unit or may be removed from the unit for separate recharging.