Watson-Marlow Bredel 40 - Manual (Page 46)

MAINTENANCE
46
4. Fit the breather (A) on the rear of the pump, by
mounting it to crimp connector (B).
5. Connect the high-level float switch to the
auxiliary power circuit via the 2-metre long PVC
cable (2 x 0.34 mm
2
). Bear in mind that the
electrical contact of the float switch is normally
closed (NC). The knob is upwards for normally
closed operation. When the lubricant level is
(too) high the contact will open.
Specifications
*
* For use in non-explosive atmospheres
Voltage: Max. 230 V AC/DC
Current: Max. 2 A
Power: Max. 40 VA
Where the float switch is constructed to
stop the equipment, operating has to be
arranged so that the stop function locks-
out, preventing the equipment from being
re-started without re-setting. Check if the
float switch is mounted with the NC sign at
the top.