3
1) Please be aware of special settings by customer request.
2) For O
2
A1 is the lower alarm threshold, used to indicate oxygen deficiency.
3) User can select to fresh air calibrate after startup.
5
Operation
Remaining life of the device (only valid for Pac 3500)
– Once activated check the remaining life by pressing
[+]
while device is
turned off. The remaining time in days will be shown. After another press of
[+]
"d" will be shown.
After another press of
[+]
the gas to be measured will be shown, e. g. "750",
"d", "CO".
Activating a new device
– Press and hold
[+]
for approx. 3 seconds while "3, 2, 1" appears in the dis-
play. The device’s usable life is now started. The gas to be measured will
be shown. After 10 seconds the display will turn off or if
[+]
is pressed again,
"d" will be shown. After 10 seconds the display will turn off or after another
press of
[+]
the remaining time in days will be shown. After 10 seconds the
display will turn off.
Alarm Threshold A2
60 ppm
20 ppm
23 vol.-%
acknowledgeable
No
No
No
latching
Yes
Yes
Yes
Fresh air calibration
3)
on
on
on
Bump Test Mode
off
off
off
Life Signal
off
off
off
Turning device off
always
always
always
WARNING
The device may only be used in areas subject to explosion hazards which
are explicitly covered under the Ex Approvals which have been given to this
device.
Electrical operating safety (Ex protection) is not guaranteed in an oxygen-
enriched atmosphere.
CAUTION
Check and, if necessary, adjust the calibration before carrying out safety-rel-
evant measurements.
A bump test must be performed according to the national regulations.
CO
H
2
S
O
2
5.1 Turning the device on
– Press and hold
[OK]
. The display counts down until startup: "3, 2, 1".
– The device will perform a self test.
– The software version and the gas name are displayed.
– The number of days of remaining operation are shown, e. g. "750", "d" (only
valid for Pac 3500).
– The A1 and A2 alarm limits are displayed.
– If the calibration interval function is activated the days remaining until the
next calibration, e.g., » CAL « then » 20 « are displayed.
– If the bump test interval function is activated, the time until the bump test in-
terval elapses is displayed in days, e.g., » bt « then » 123 «.
– The first warmup time in seconds is displayed alternating with the letters
"SEC".
– A fresh air calibration can be performed at start up. The gas value will flash
for approx. 5 seconds after indication of the alarm limits. Press
[OK]
during
this period to perform the fresh air calibration. If during the flashing period
no key or
[+]
is pressed then the fresh air calibration is skipped and the de-
vice will go into the measurement mode.
Notice
All display segments are lit. Next, the LED, Alarm and Vibrating alarm are
activated in sequence. Check these before each use.
WARNING
For the O
2
sensor: after the first activation of the device, a sensor warm up
time of up to approx. 15 minutes is needed; for all further activations the
warm up time is approx. 1 minute. The gas value flashes and the
[!]
icon is
lit until the warm up time has passed, and until the second warm up time has
passed.
WARNING
The CO and H
2
S have a 15 minute warm up after the first activation of the
device. For all further activations, these sensors will be ready immediately
after the activation sequence.
