Dräger PSS 7000 Series C/W SENTINEL 7000 EMU User Instructions page 13

PSS® 7000 SERIES c/w SENTINEL 7000 EMU
A battery check is performed
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d u r i n g t h e s e l f - c h e c k
sequence. If the battery
voltage is below a preset voltage
the backlight will illuminate; the
low battery icon (Fig 4) will be
displayed; the Sentinel 7000
will emit a series of tones for
approximately four seconds; and
then the display will switch off. When
this occurs replace the battery.
To remove the battery insert
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and press the two pronged
key (supplied with the SCBA)
into the two slots at the base of the
battery. This will open the locking
latch allowing the battery to be
removed.
Installing the Cylinder
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The following instructions are for a screw-on cylinder coupling. Installation
of a quick-connect cylinder coupling is detailed in a separate UI (refer to
instruction no. 3356260).
Set the carrying-frame backplate to the short (S) position (refer to Adjusting the
Backplate Height).
Inspect and check the following:
The external thread of the cylinder valve port.
The internal thread of the first-stage regulator handwheel.
The O-ring seal in the pressure connector is in position and not damaged.
The bore to the sintered filter in the HP connector of the first-stage regulator is clean
and free from dirt and contamination.
Lay the carrying frame horizontal and fully extend the cylinder strap.
Take care to prevent impact damage as the cylinder valve is aligned with the first-
stage regulator handwheel.
Insert the cylinder (valve end first) through the cylinder strap, to align the cylinder
valve with the handwheel.
Lift the cylinder and backplate into the vertical position (supported on the end of the
cylinder).
Align and fully tighten the handwheel (clockwise). Do not use tools or overtighten.
Sentinel 01: Edition 1: July 2008 - Subject to Modification
11
Fig. 4
2580