G424 Service Manual LPG Fuel System(Low Emission Version)90
Vacuum Switch (MAP)
1. Electrical
2. Vacuum port
3. Main body
The vacuum switch is a simple direct acting contact
pressure switch, consisting of a main body (3), an
electrical connector with two pins (1) and a vacuum
port connection (2).
The unit is normally open (i.e. the electrical connectors
(1) are not common) when no vacuum is applied to the
vacuum port (2).
When vacuum is applied to the port (2) unit respponds
and closes the electriccal contacts (1) so that current
may pass.
Vacuum Switch
1. Electrical
2. Vacuum port
3. Main body
The vacuum switch is a simple diaphragm unit,
consisting of a main body (3) housing a
diaphragm/spring, two electrical connectors (1) and a
vacuum port connection (2).
The unit is normally open (i.e the electrical connectors
(1) are not common) when no vacuum is applied to the
vacuum port (2).
When vacuum is applied (see specification for limits)
to the port (2) the diaphragm/spring in the body (3)
responds and closes the electrical contacts (1) so that
current may pass.
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