Operating manual
Page 16 of 32
B0102
GMI / GML / SAB / GOI
4.4 Function control (optional)
Functional description:
The function control is basing on an inductive proximity switch, which monitors the piston
movement of the supply pump. When the supply pump fails, the function control immediately
detects that condition. Switch output open at idle position.
Replacing the proximity switch
(damped type)
Replacing the proximity switch
(non-damped type)
Pull off the plug from the proximity switch.
Loosen the locknut. Unscrew anticlockwise
the proximity switch out of the plastic insert.
Screw clockwise the new proximity switch by
hand force into the plastic case to bottom
stop. Slightly tighten the locknut on the
plastic case and mount the plug on the
proximity switch.
Pull off the plug from the proximity switch.
Loosen the locknut. Unscrew anticlockwise
the proximity switch out of the pump case.
Energise the electric magnet (consider the
duty cycle), to make shure that the pistons
has moved out. Screw clockwise the new
proximity switch into the pump case to
bottom stop and turn it back anticlockwise by
half a turn, then. Slightly tighten the locknut
on the pump case and mount the plug on the
proximity switch.
Technical data: Proximity switch
Sensing distance:
2,5 mm
(not flush with surface)
Residual ripple:
≤10%
Connecting diagram:
Technical data: Proximity switch
Sensing distance:
1.5 mm
(flush with surface)
Residual ripple:
≤10%
Connecting diagram:
Spare part order number:
913.900-65
Spare part order number:
913.900-66
Fault elimination guide in case of faults:
Check the plug for tight contact, check the distance of the proximity switch related to the
supply piston and inspect the cable for damage (cable break).
