CPS GS40, Instruction Manual

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1. Install 4 alkaline AA batteries in the
battery compartment as shown in-
side battery compartment.
2. Turn the instrument ON by sliding the
front panel switch to either the LO
position as shown in Fig 2. This sets
the instrument to its low sensitivity
setting.
CAUTION: perform this step and the
previous one in an atmosphere free
of contaminants.
3. Wait approximately 30 seconds un-
til the audible alarm starts to tick at
a slow rate.
4. Start searching for leaks.
5. If no leaks are found, exit to an area free from contami-
nants, switch the instrument to the HI sensitivity setting
and repeat from step 3.
OPERATION
The GS40 is a fully automatic instrument and it will adjust itself
to any background contamination. This means that if the user
walks into an area where there is a background concentration of
contaminants, there will be an alarm, but the unit will quickly ad-
just itself to the background and will resume its slow ticking rate.
CAUTION: If a background indication is detected, it is best to
return to an area free of contamination, turn off the instrument,
ventilate the area and repeat the operation from Step 2.
If large leaks are present, the high sensitivity of the GS40 will
make it difficult to pinpoint the source of the leak. In those cases,
exit to an area free from contaminants, set the sensitivity switch
to LO and repeat the search procedure from Step 3. Large leaks
should be repaired first.
The best procedure to find a leak with the GS40 is to sweep the
sensor back and forth over suspected areas such as joints,
fittings and valves. Repeated alarms over the same spot are a
sure indication of a leak.
4
Fig 2