Instruction manual

The sensor cover plate contains holes for five sensors. In
instruments with less than five sensors, some of these holes
are permanently blocked with special sealing membranes. Do
not puncture these membranes; otherwise, erroneous gas
readings can result.
Storage
Store your FiveStar Alarm in a safe, dry place when it is not in
use. The optimum storage temperature is between 23 and 104
degrees Fahrenheit (-5 and 40 degrees Celsius).
• The FiveStar Alarm with rechargeable battery packs can be
stored on charge indefinitely.
Storage for Models with Nitric Oxide (NO)
or Ammonia (NH
3
) Sensors
These models draw a small amount of power at all times (even
when turned OFF) in order to maintain a voltage on toxic gas
sensors and keep them ready for immediate use.
• When the FiveStar Alarm is stored for less than 20 days,
recharge the rechargeable battery pack or replace alkaline
batteries before storing.
• To store these models for more than 20 days, attach the unit to
a battery charger and charge with the proper MSA charger or
periodically replace alkaline batteries with fresh cells.
• If the instrument was stored without a charged battery attached,
attach the pack; then, allow the NO or NH
3
sensor
to stabilize for 12 hours with the battery attached prior to
calibration and use.
"!
WARNING
After storage, always recheck instrument calibration before use.
During storage, sensors may drift or become inoperative and
may not provide warnings of danger to the health and lives
of users.
Shipment
1. Remove battery pack before shipment. When returning the
FiveStar Alarm for repairs, disconnect the normally used
battery pack from the unit, and include it in the container.
Chapter 3, General Maintenance Instruction Manual
3-2 FiveStar Alarm