Multicharger II
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SafeCheck 200 Operator’s Manual
31
10. MultiCharger II
Caution: The MultiCharger II may only be used when the SafeCheck 200
contains rechargeable Nickel Cadmium or Nickel Metal Hydride
battery packs. If an alkaline battery pack is accidentally placed into
the charger, it will not attempt to charge. No damage will be done to
the charger. The MultiCharger II is not approved for operation in
a hazardous environment, so any attempt to charge a unit and/or a
rechargeable battery pack in a hazardous environment is
specifically cautioned against. In fact, if the unit is operated while
connected to the charger in a hazardous location, all intrinsic safety
approvals are voided.
We provide this charger for the reconditioning of the NiCad and NiMH
battery packs. The battery packs may be charged either as part of the unit or
may be removed from the unit for separate recharging.
The MultiCharger II is designed to fully recharge a battery pack in less than
two hours. When the pack is fully charged, the charger switches to a trickle
charge to maintain the charge on the pack and to avoid damage to the pack
by overcharging. In addition, there is a discharge button that can be used
with the NiCad battery pack to fully discharge the pack before charging to
counteract the affect of "battery memory" that is a problem inherent to
NiCad batteries. As a guide, using this feature would discharge a fully
charged NiCad pack in about six hours. With NiCad packs it is
recommended that you do a discharge before charge cycle about every 10th
charge cycle. This helps to lengthen the life of a NiCad pack especially if
the pack is only partially discharged on a regular basis. There is no
requirement to do the conditioning discharge/charge cycle on the NiMH
battery pack, as this type of battery does not suffer from memory effects.
Note: Rechargeable SafeCheck 200 battery packs may only be
charged with the Quest MultiCharger II battery charger. Use of
other charger's could result in damage to either the unit or the
battery pack. Likewise, attempting to charge other battery packs
with a Quest MultiCharger II could result in damage to the
charger.
QTP-2000 Sample-Draw Pump
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SafeCheck 200 Operator’s Manual
32
11. QTP-2000 SAMPLE-DRAW PUMP
The QTP-2000 Sample-Draw Pump may be used to test air prior to entering
a confined space. Attach the pump to the SafeCheck 200 using the attach-
ment screw located on the end of the pump. The pump starts automatically
any time that the unit is in the RUN MODE or the CALIBRATE MODE.
The pump will not run in any other mode to conserve unit battery power.
Attach the Tygon tubing and sample gas probe as shown.
The Sample Gas Probe contains a replaceable hydrophobic filter to prevent
accidentally drawing water into the unit, and to prevent dust and solid
objects from getting into the unit. The pump gets it's power from the unit
and draws approximately 2.5 liters per minute. It is also controlled by the
unit, in that if it becomes plugged or begins to draw in water, the unit will
cause the pump to shut down and give an audible and visual indication that
the pump is plugged.
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