KSB M 1, Инструкция по установке и эксплуатации, Страница: 9 / 20

4 Description
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M 1 (K) Alarm Contactor
4 Description
4.1 General description
M 1 alarm contactor
The M 1 alarm contactor is a float switch that automatically sets KSB alarm switchgear
AS 0, AS 2, AS 4, AS 5, AS W4 or AS W8 to alarm status when the water level in the
collecting tank of the Ama -Drainer-Box is too high.
M 1 K alarm contactor
The M 1 K alarm contactor is a float switch that responds when the water level in the
collecting tank of the Ama-Drainer-Box is too high by
- automatically sending an alarm signal to the KSB AS 1-M alarm switchgear and
- automatically triggering an acoustic warning signal in
washing machine interrupter
GEWAS 191 AN GL, causing the devices connected to the interrupter to be de-
energised.
4.2 Designation
Example: M 1 K alarm contactor
Table 4: Key to the designation
Code Description
Alarm contactor Type series
M Magnetic float switch
1 Code number
K With contact plug (for washing machine interrupter only)
4.3 Name plate
6
5
4
1
2
3
Fig. 1:
Example of name plate for alarm contactor
1 Manufacturer 2 Type series
3 Rated voltage 4 Serial number
5 Switching capacity 6 Start-up current
4.4 Design details
▪
The M 1 (K) alarm contactor is a magnetic float switch working according to the
non-contacting principle.
▪ It comprises:
–
A connection element with PG 7 cable gland
–
A 5 m connection cable (2 x 0.34 mm
2
)
–
A sensor tube with a reed contact and the float
As the liquid level rises, the float with the incorporated annular magnet moves
upwards.
In the switching range of the reed contact, the resulting magnetic action triggers a
switching signal.
If the float leaves the contact’s range as the liquid level drops, the reed contact will
return to its original position.