Gardner Denver THOMAS ASF VAKUMATIK IVF R34, Installation And Operation Manual, Page: 11 / 24

Leak detector Vakumatik IVF R34
6. Functional characteristics
- The leak detector (1) operates per the vacuum principle. A built-in vacuum pump (1.21)
evacuates air from the interstitial space (12) via the suction line (6) and compensates for
minor leaks in the system. The interstitial space is formed by the space between the two
tank walls or between the leak protection lining and the tank wall (11, 14). The evacuated air
is usually circulated back into the tank via the exhaust line (8). A pressure switch (1.23),
which is also connected to the interstitial space, identifies the pressure in the system and
controls the pump according to the specified switching values as well as the alarm signal
with major leaks of the leak detector system.
- A green power lamp (1.3) permanently indicates the operating condition of the leak detector
(voltage applied).
- A red alarm lamp (1.2) as well as the acoustic buzzer (1.18) indicate the alarm condition.
This acoustic alarm may be temporarily disabled by means of a switch (1.4). A yellow lamp
(1.5) will indicate a disabled buzzer.
- An alarm condition may, for example, also be forwarded to a central monitoring station via
terminal "A" found on the terminal strip (1.16) and/or via an isolated contact (1.17, optionally
installed or as an accessory).
- The normal operating condition has been reached once all connecting lines have been
connected, all test and locking devices (1.13/1.15) are in a secure operating position, the
power lamp is "ON", the alarm signal is "OFF", and the buzzer has been activated (yellow
lamp "OFF").
- Diagram 2 below describes the start-up operation sequence, normal operation and alarm.
Diagram 2
6.1.
Media-touching materials of the leak detector
- The leak detector components, which touch the stored medium in case of a leak, consist of
the following materials:
Pump and pressure switch: NBR, PA
Connecting lines and connectors: PVC, POM
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