Page 47 of 48 P/N 595279-01 Rev. B 5/14
CAUTION
SYSTEM MUST NOT BE PRESSURIZED WHEN
BATTERIES ARE INSTALLED. DAMAGE
TO THE ELECTRONIC COMPONENTS MAY
RESULT IF BATTERIES ARE INSTALLED
WITH SYSTEM PRESSURIZED.
RESPIRATORS WITH PAK-ALERT DISTRESS ALARM
AIR-PAK respirators equipped with a Heads-Up Display AND a PAK-ALERT
distress alarm, require six (6) “AA” cell batteries for operation. The six (6)
batteries power both the Heads-Up Display AND the PAK-ALERT distress
alarm, so separate batteries in the Gauge Console are not required. The
batteries should be replaced only by a trained maintenance technician in
a clean area known to be nonflammable. Replace batteries as follows:
1. Close respirator cylinder valve, open regulator purge valve letting out
all the trapped air, close regulator purge valve, press the reset button
twice. A fteen second beep sequence occurs as the residual air bleeds
off. Unit will sound a two tone chirp and green light will go out.
NOTE
ALWAYS BE SURE THAT CYLINDER VALVE IS OFF AND THE PAK-ALERT
DISTRESS ALARM IS COMPLETELY INACTIVE BEFORE CHANGING
BATTERIES. NEVER REMOVE OR REPLACE BATTERIES WITH
SYSTEM PRESSURIZED OR DAMAGE MAY OCCUR TO ELECTRONIC
COMPONENTS.
2. When replacing batteries on respirators, remove the cylinder and place
the respirator in a clean, non-hazardous area.
3. Use a Phillips driver to remove the Battery Housing Cover as shown
in FIGURE 27. Carefully remove the cover and set aside.
5. Install six (6) fresh new “AA” bat-
teries of the same type. Always
replace all batteries at the same
time. The battery holder is marked
with the style and orientation of the
batteries required. See FIGURE 28.
To maintain Intrinsic Safety, use six
(6) each of one of the following 1.5
volt AA batteries:
– Duracell Alkaline MN1500
– Duracell Alkaline MX1500
– Duracell Alkaline PC1500
– Eveready Energizer Alkaline EN91
– Eveready Energizer Alkaline E91.
Do not mix batteries. Verify correct orientation of batteries as shown
on label inside the battery holder.
6. The battery cover must be installed
so that it is water tight after replace-
ment. Clean the sealing rib around
battery compartment and sealing face
of the cover, shown in FIGURE 28, by
wiping with a clean damp to remove
any dirt or foreign matter which might
prevent a proper seal. Check cover
gasket for tears or cuts. If damage
is found, remove respirator from ser-
vice and tag for repair by authorized
personnel.
7. To install battery cover, align the three
grooves on the cover with the three
tabs on the battery compartment,
shown in FIGURE 28,
8. Tighten the cover screw. AFTER REPLACEMENT OF BATTERIES,
PERFORM A REGULAR OPERATIONAL INSPECTION BEFORE RE-
TURNING RESPIRATOR TO SERVICE.
WARNING
THE PAK-ALERT DISTRESS ALARM IS
INTENDED TO ASSIST IN LOCATING
A PERSON WHO MAY BE IN A LIFE
THREATENING SITUATION. FAILURE
TO FOLLOW THE INSTRUCTIONS FOR
OPENING, CHANGING THE BATTERIES AND
RE-CLOSING THE BATTERY COMPARTMENT
MAY RESULT IN DAMAGE WHICH COULD
CAUSE FAILURE OF THE PASS DURING
A LIFE THREATENING EMERGENCY OR
COULD CAUSE A FIRE OR EXPLOSION IN A
FLAMMABLE OR EXPLOSIVE ATMOSPHERE
POSSIBLY RESULTING IN INJURY OR DEATH.
CHECK YOUR WORK!
BEFORE ASSEMBLY OF BATTERY COVER,
CHECK TO SEE BOTH BATTERIES ARE
FRESH, NEW BATTERIES OF THE TYPE
INDICATED ABOVE AND THAT THEY HAVE
BEEN INSTALLED PROPERLY.
WARNING
BATTERIES MUST ONLY BE CHANGED IN
AN AREA KNOWN TO BE NONFLAMMABLE.
CHANGING THE BATTERIES IN A FLAMMA-
BLE ATMOSPHERE MAY CAUSE AN IGNI-
TION WHICH COULD RESULT IN SERIOUS
INJURY OR DEATH.
FIGURE 27
USE SCREWDRIVER
TO LOOSEN SCREW
AND REMOVE
COVER
WARNING
TO REDUCE THE RISK OF EXPLOSION
USE BATTERIES ONLY FROM THE LIST
PROVIDED, DO NOT MIX OLD BATTERIES
WITH UNUSED BATTERIES, AND DO
NOT MIX BATTERIES FROM DIFFERENT
MANUFACTURERS. UNAUTHORIZED
SUBSTITUTION OF COMPONENTS MAY
IMPAIR INTRINSIC SAFETY AND CAUSE
AN EXPLOSION WHICH COULD LEAD TO
SERIOUS INJURY OR DEATH.
CAUTION
OVERTIGHTENING THE CYLINDER VALVE
MAY CAUSE DAMAGE THAT COULD RESULT
IN LEAKAGE OF AIR FROM THE CYLINDER.
USE NO TOOLS TO CLOSE THE CYLINDER
VALVE.
4. Remove used batteries from battery
compartment by sliding them out of
the battery compartment.
FIGURE 28
BE SURE SEALING
SURFACES ARE
CLEAN BEFORE
REASSEMBLY
ALIGN TABS
CAUTION
IMPROPER BATTERY COVER INSTALLATION
CAN CAUSE BATTERIES TO OVERHEAT AND
MAY CAUSE DAMAGE TO THE PRODUCT.
ALWAYS MAKE SURE THAT THE ALIGNMENT
GROOVES ON THE BATTERY COVER ARE
ALIGNED WITH THE TABS ON THE BATTERY
COMPARTMENT DURING INSTALLATION OF
THE COVER.
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