Dellmeco DM 15/30, Инструкция по эксплуатации

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37 I DELLMECO I AODD DIAPHRAGM PUMPS
16.3. Diaphragm Monitoring (option code DM1, DM2)
Although DELLMECO diaphragms with integrated metal core are designed for an optimum service life, the
diaphragm remains a wear part. If it breaks, liquid can leak into the center housing and possibly emerge through the
muffler. This can be prevented simply and effectively with the DELLMECO diaphragm monitoring.
A capacitive diaphragm sensor is mounted in the muffler [17] of the pump, which registers any liquid
approaching the sensor, no matter whether the liquid is conductive or not. Hence, a fast reaction to a damage of a
diaphragm becomes possible. In case of humid surrounding air a false alert may occur despite operating the pump
with dried compressed air.
The diaphragm monitoring system is available in two variations:
• DM1 Diaphragm sensor (Namur), also for explosion-proof area
• DM2 Diaphragm monitoring system complete with sensor and controller
The diaphragm sensor can either be connected to an existing controller with Namur inlet (code DM1) or to the
controller included (code DM2). The wiring diagram and technical data can be found on the controller itself. For
further details, please refer to the data delivered by the manufacturers of the components. The controllers have to
be installed in a suitable cabinet.
Spare part list, diaphragm monitoring
Pump size: DM 15 DM 25 DM 40 DM 50 DM 65
Code Position Quantity Description Material Part no. Part no. Part no. Part no. Part no.
DM 1 63 1 Diaphragm sensor, Namur diverse 9 15 19 00 9 15 19 00 9 15 19 00 9 15 19 00 9 15 19 00
DM 2
63 1 Diaphragm sensor, Namur diverse 9 15 19 00 9 15 19 00 9 15 19 00 9 15 19 00 9 15 19 00
- 1 Controller diverse 9 15 14 00 9 15 14 00 9 15 14 00 9 15 14 00 9 15 14 00
16.4. Back Flushing System (option code BF1, BF3)
A
pump equipped with the back flushing system can be emptied along with an inclining discharge line while
being installed within the plant. It consist of a ball-lift system in the side housings which can be activated by manual
valves.
Open the manual valves by turning blocking pins [ 67 ] clockwise (right turn), approx. 9 0° . The pump should be
kept in operation meanwhile. Slow down the pump slowly and finally stop it. The pump is drained entirely on both
sides (suction and discharge).
The side housing o-rings are made from EPDM (BF1 option), or FPM (BF3 option).
ATTENTION: Blocking pins may be rotated only in clockwise direction to avoid unscrewing of cap [ 70 ] - see the
drawing on page 38 (arrows show direction of rotating of blocking pins). To close manual valves, you should turn
clockwise blocking pins [
67 ] around – to the original position, before activating BF system.