User Manual

14
DRAFT COPY
DRAFT COPY
BATTERY REPLACEMENT
ALWAYS BE SURE THAT THE PAK-ALERT DISTRESS ALARM IS COM-
PLETELY INACTIVE BEFORE CHANGING BATTERIES. NEVER REMOVE
OR REPLACE BATTERIES WITH SYSTEM PRESSURIZED OR DAMAGE
MAY OCCUR TO ELECTRONIC COMPONENTS.
b. Depress the PAK-ALERT distress alarm retaining
spring and slide the Sensor Module from Backframe
as shown in FIGURE 6.
c. Turn the sensor module over to expose the battery
cover, shown in FIGURE 7 and replace batteries as
instructed in steps 5 through 10 of this section.
4. When replacing batteries on respirators equipped with
Wire Frame Backframe, P/N 804173-01:
a. Place the respirator with the cylinder side of the
backframe facing down exposing the battery cover
on the back of the sensor module, as shown in FIG-
URE 8.
b. Replace batteries as instructed in steps 5 through 9
of this section.
1. Place the respirator in a clean, non-hazardous area.
2. Remove the cylinder as follows:
a. Close the respirator cylinder valve.
b. Open the regulator purge valve to release any air trapped in the sys-
tem. Close the regulator purge valve.
c. Press the RESET button twice. The unit will beep as a fifteen (15)
second shut-down sequence occurs. When the sequence is complete,
the unit will sound a two tone chirp and the green light will go out.
d. Remove the high pressure coupling from the cylinder and remove the
cylinder from the backframe.
FIGURE 6
RETAINING SPRING
REMOVE
DEPRESS
FIGURE 7
BATTERY COVER
COVER SCREW
(4 PLACES)
FIGURE 8
BATTERY COVER
COVER
SCREW
(4 PLACES)
3. When replacing batteries on respirators equipped with
Aluminum Backframe, P/N 804415-01:
a. Place the respirator with the sensor module facing
upward as shown in FIGURE 6.
CAUTION
SYSTEM MUST NOT BE PRESSURIZED WHEN BATTERIES ARE INSTALLED. DAMAGE
TO THE ELECTRONIC COMPONENTS MAY RESULT IF BATTERIES ARE INSTALLED WITH
SYSTEM PRESSURIZED.
5. To remove battery cover, first loosen all four (4) cover
screws 1 or 2 turns each, then fully loosen all the
screws. Carefully remove cover and set aside.