Technical data

32
Central vacuum systems
After repairing, measure the depression again.
Z 214
Z 215
Z 216
Testing the inlet valves
•
Start the central vacuum cleaner up by inserting
the vacuum gauge into whatever inlet valve of
the system.
Testing of
the inlet valves
•
Listen if there are any whistles due to losses of
the inlet valves.
Whistles are due to:
1. an excessive screwing of the inlet valve into the
backup boxes (see paragraph “Mounting and
connection of the inlet valves”)
2. a damaged or incorrect mounting of the gasket.
Check if it is positioned correctly.
Practical testing of the functioning of the system
It is preferable that the customer himself cleans in
order to check whether the suction system works
perfectly.
Final testing of
the system
In this phase the installer tests the finished system.
Start the vacuum cleaner up by inserting the
vacuum gauge into whatever inlet valve and
measure the depression.
Please notice: if you use inlet valves with pin-jacks,
the system can be started up creating a bridge with
the two 12 V electric cables coming out of the central
unit.
Wait a few seconds so that the system creates the
depression necessary for the measurement. When
the pointer has come to a standstill, read the exact
value of depression.
Then check that the depression measured at
the inlet valve corresponds with that measured
at the inlet of the central vacuum cleaner.
These measures must correspond. Small differences
in the value indicated in the “Technical data” sheet
can derive from the voltage of the electric system
and could be considered in the normal tolerance
range. If the two values do not correspond, there is
an air-infiltration in the tubing. Locate the origin of
the loss by putting the stethoscope on the wall or
on the floor along the tubing. An infiltration is present
where you locate a whistle.
In case you notice whistles which aren’t caused by
the inlet valves, locate the origin of those whistles
by placing the stethoscope on the wall or on the
floor along the tubing.
Delivery of the finished
system to the customer