Maintaining The Fastener System; Examining Tightness Of Chemical Protective Suit; Examining Tightness Of Suit Valves - Dräger CPS 7900 Notice D'utilisation

6. Refit the ventilation unit
7.4

Maintaining the fastener system

1. Liberally grease the fastener system after each use and
each cleaning/disinfection process. Only use the grease
stick supplied by Dräger.
2. In particular, make sure to adequately grease the links of
the chain of the inside zipper mechanism and the area
underneath the links of the chain on which the zipper tab
runs.
NOTICE
i i
Protruding textile threads can be removed using a
lighter to prevent the zip fastener from becoming stuck.
The flame must only come into contact with the zip
fastener for a few split seconds to avoid damage or
deformations.
7.5 Examining tightness of chemical
protective suit
NOTICE
i i
The test is described for the test device Porta Control.
You can carry out the tests with other test devices, but
the indicated values must be observed.
Test equipment and accessories:
Porta Control – R 53 340
Compressed air pistol – R 51 034
Compressed air supply
Carry out the tests according to EN 464 at room temperature
(20 °C ±5 °C (59 °F ... 77 °F).
1. Check Porta Control for leaks.
2. Close fastener system and spread out chemical protective
suit front-down on a clean and even surface.
3. Protect visor with a soft underlay to avoid scratches.
4. Take protective caps off all suit valves and remove valve
discs.
5. Fit test cap on the right suit valve and connect to Porta
Control.
6. Close test hose with sealing plug.
7. Fit another test cap to the left suit valve and connect with
compressed air pistol via hose connection and hose clip.
8. Open hose clip and operate compressed air pistol. Inflate
chemical protective suit without creases until Porta Control
shows 17.5 mbar (179 mm WC).
9. Close hose clip.
10. Set the settling time to 10 minutes and start stopwatch.
During this time, keep the pressure at a minimum 17 mbar
(173 mm WC) to allow for pressure and temperature
compensation. Boost pressure via hose clip and
compressed air pistol, if necessary.
11. Disconnect compressed air pistol and open hose clip.
Reduce pressure to 16.5 mbar (168 mm WC) and close
hose clip.
12. Set the test time to 6 minutes and start stopwatch.
Dräger CPS 7900
1
if applicable. 13. Read off pressure on Porta Control at end of test time.
There are no leaks in the chemical protective suit if the
pressure drops by 3 mbar (30 mm WC) or less, then
disassemble test set-up and check suit valves.
If the pressure drops by more than 3 mbar (30 mm WC):
1. coat critical spots like e. g. seams, glove and boot joints
and zipper systems with soap suds,
2. mark leaking spots,
3. rinse off soap suds,
4. vent and repair chemical protective suit or send in to
Dräger for repair.
5. Then repeat leak test.
7.6

Examining tightness of suit valves

NOTICE
i i
The test is described for the test device Porta Control.
You can carry out the tests with other test devices,
but the indicated values must be observed.
Test device:
Porta Control – R 53 340
1. Moisten valve disc and insert it.
2. Assemble test set-up. Place test cap onto the valve to be
tested.
3. Open hose clip and create a negative pressure of 10 mbar
(102 mm WC) with pumping ball, then reclose hose clip.
Do not overload pressure gauge.
4. Set the test time to 1 minute and start stopwatch.
5. Read off pressure on Porta Control at end of test time.
6. The suit valve is in order if the pressure drops by less than
1 mbar (10 mm WC). Check the next suit valve.
7. Remove valve disc and visually examine it if the pressure
drops by more than 1 mbar (10 mm WC). Valve disc and
valve seat must be clean and undamaged. Replace valve
disc, if necessary.
8. Moisten valve disc and insert it.
9. Repeat test.
10. If the test is successful, place protective caps on exhalation
valves.
Troubleshooting
29