PSS BG 4 Service Manual
Draeger Safety, Inc.
Testing with an RZ 25 (replaced
with RZ 7000)
Before starting up for the first time and whenever the
PSS BG 4 has been serviced.
Testing the PSS BG 4 with Inserted
CO
2
Absorber
During the shelf life of the apparatus (see table
“Maintenance Intervals”, section CO2 absorber
(factory-packed cartridge) with footnotes 1 and 2) the
operating test can be run a total of six times, each
test lasting no more than 15 minutes.
A record of each test should be made on the CO2
absorber housing, with details of the month and year
and the tester’s initials.
Exceptionally, if the breathing circuit is opened for
more than 5 minutes, the CO2 absorber apertures
should be sealed with three PE plugs to prevent
escape of gas.
Test Equipment and Accessories
RZ 25 ..................................................... E08200
Test adapter ......................................... R50028
1)
Sealing cap .......................................... R22086
1)
Test unit RZ-50e .................................. 4056732
1)
Part of the test set R33777
Preparing for Tests
• Align the zero point of test unit RZ 25. Note
the instructions for use of the test unit RZ 25.
Test Setup
• Position the PSS BG 4 on the left and test unit
RZ 25 on the right. This ensures that the
closed-circuit breathing apparatus is easily
accessible to the tester and the test unit
RZ 25 can be operated without difficulty.
• The tests must be performed in the specified
order. Contact Draeger Safety, Inc. for
approval of alternate testing methods.
Draeger Training 11/16 rev 1
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