Visual And Function Check; Tightness Check - MSA AutoMaXX-AE Operating Manual

MSA
(3) Remove diaphragm edge from the diaphragm groove in the housing.
(4) Roll up diaphragm until the slot in the diaphragm fork is visible.
(5) Pull out the diaphragm from the diaphragm fork in slot direction.
(6) Slightly stretch diaphragm surface and check against light for damage such
as tears; if needed, replace.
Assembly
(1) Slide diaphragm mushroom of diaphragm into the slot of the diaphragm fork.
(2) Fit diaphragm edge into the diaphragm groove.
(3) Slide on protective cap as follows:
Push both operating buttons simultaneously and slide on protective cap

until it audibly and visibly snaps into place on the snap-on hooks.
(4) Assemble handwheel as follows:
For AutoMaXX-AE and AuroMaXX-N only
Push in safety clamp and simultaneously push and hold down both

operating buttons.
Slide on handwheel until stopper still holding down both operating

buttons.
(5) Perform tightness check and check closing pressure (positive pressure
versions) or rather opening pressure (negative pressure versions).
4.5.

Visual and function check

Check for visible faults or defects,

e.g. components mounted incorrectly.
Check all operating functions,

e.g. mechanical function test of flush button.
4.6.

Tightness check

Check that the AutoMaXX is tight both without medium pressure and
with medium pressure.
Without medium pressure
(1) Switch off AutoMaXX with red operating button (only positive pressure lung
governed demand valve).
(2) Connect AutoMaXX to test device.
For positive pressure lung governed demand valve use a connecting

adapter.
(3) Generate positive pressure of +7.5 mbar on test device and hold for 60 s.
The pressure change must not exceed 1 mbar in 60 seconds.

(4) For negative pressure versions additional:
Generate negative pressure of -7.5 mbar on test device and hold for 60 s.
The pressure change must not exceed 1 mbar in 60 seconds.

AutoMaXX - series
CARE AND MAINTENANCE
15