4
5.2 Before entering a working place
– Use the clip to attach the device to clothing before working in or near poten-
tial gas hazards.
– After turning the device on, the actual measurement value will normally be
shown in the display.
5.3 Performing a “bump test” with gas
– Prepare a Dräger test gas cylinder with 0.5 l/min flow regulator and a gas
concentration higher than the alarm threshold to be tested.
– Insert the Dräger Pac 3500/5500 and connect the test gas cylinder to the in-
let (back most) nipple on the calibration adapter or to the Dräger Bump Test
Station.
– To enter the bump test mode manually press the
[+]
3 times within
3 seconds. The device beeps twice, quickly. The Display begins to flash
slowly and the
[!]
icon appears.
– Open the regulator valve to let test gas flow over the sensor.
– If gas concentration exceeds the alarm thresholds A1 or A2 the correspond-
ing alarm will occur.
– To finish the bump test press
[OK]
, the
[!]
icon is removed from the display
and the device returns to the measuring mode.
– If during the bump test no alarm occurs within 1 minute, the device alarm
mode is entered to indicate failure. The error icon
[X]
and the notice icon
[!]
flash; error code 240 is shown upon acknowledgement. "
– – –
" is shown in-
stead of the measured value, and the
[X]
and
[!]
icon are lit. In this case the
bump test can be repeated or the device can be calibrated.
– The result of the bump test (passed or failed) will be stored in the event log-
ger (see section 5.6).
WARNING
The gas opening is equipped with a dust and water filter. This filter protects
the sensor against dust and water. Do not destroy the filter. Replace
destroyed or clogged filter immediately.
Ensure that the gas opening is not covered and that the device is also near
to your breathing area. Otherwise the device will not work properly.
WARNING
If the notice icon
[!]
is lit after turning the device on, it is recommended that
you perform a bump test.
CAUTION
Risk to health! Test gas must not be inhaled.
Observe the hazard warnings of the relevant safety data sheets.
– The bump test can also be finished automatically by the instrument without
pushing the "OK" button. This function can be activated using the PC soft-
ware Pac Vision or CC Vision (see section 5.7).
– If the bump test mode was entered by mistake, while the notice icon
[!]
is lit,
press
[+]
to cancel the bump test mode and switch over to measurement
screen.
5.4 During operation
– If the allowable measurement range is exceeded or a negative drift occurs,
the following will appear in the display: “
” (too high concentration) or
“
” (negative drift).
– Alarms are indicated as described in section 6.
– Continuous function of the device is indicated by the life signal, which is a
beep every 60 seconds, if configured (see section 4).
5.5 Turning the device off
– Simultaneously hold both keys for approximately 2 seconds until "3" ap-
pears in the display. Continue to hold both keys until the countdown is fin-
ished. The alarm and LED will be activated momentarily.
5.6 Event logger
– Dräger Pac 3500/5500 is equipped with an event logger. The event logger
stores 60 events. If event No. 61 occurs the logger overwrites the oldest
stored event.
– For download of the stored data connect Dräger Pac 3500/5500 to a PC us-
ing the connecting cradle or the E-Cal System. The stored data can be
downloaded with installed software Pac Vision or Gas Vision.
5.7 Calibration and configuration
– For full zero and span calibration or individual configuration connect the de-
vice to a PC using the connecting cradle or the E-Cal System. Calibration
and configuration can be done with installed software Pac Vision or CC Vi-
sion. A calibration “due date” can be set using the operation timer (in days).
Strictly follow the instructions for use of the modules and software in use.
5.8 Calibration intervals
– Dräger recommends 2 year inspections. Yearly or 6 monthly calibrations if
demanded, acc. EN 50073, OSHA or other country or company specific re-
quirements.
