B. Braun 871 5416, Service Manual

Page: 51 / 86

Unit Elements
4
Infusomat® fmS 2.3 gb 4 - 11
4.8 Front Frame Designation Ord. No.
Front frame without flow inhibitor and pressure spring . . . 3450
5822
Circular seal 571 mm / 45 mm . . . . . . . . . . . . . . . . . . . 3477 3126
Flow inhibitor with pressure spring . . . . . . . . . . . . . . . 3477 3258
Pressure spring for flow inhibitor (5 pcs.) . . . . . . . . . . 3477 3266
Tamper-proof caps 10 mm (50 pcs.) . . . . . . . . . . . . . . 3477 3134
Reed sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3450 1754
Exchange
Tools: Pin punch
1. Remove battery (see „Battery“
➪
p. 4 - 1) .
2. Dismount cover (see „Housing and Handle“
➪
p. 4 - 4) .
3. Disassemble pump cover (see „Pump Cover“
➪
p. 4 - 3) .
4. Loosen countersunk screws by piercing a screwdriver through
the caps and remove caps.
Note
Do not loosen the assembly screw on the lower pressure sensor
board! Otherwise the pump has to be recalibrated with a 4mm
gauge.
5. Press Reed sensor out of holder on the rear side, see Fig.: 4 -
13 .
6. Press both snap-in pins inwards (rear side top and bottom).
Then remove front frame to the front.
7. Remove flow inhibitor with pressure spring and Reed sensors
and assemble in new front frame.
8. Insert the seal. Assembly is done in reverse order. Snap-in
pins manually. Insert Reed sensor and fasten cables firmly
with cable ties.
Check
Safety check, pump unit check.
Fig.: 4 - 12
Snap-in pin
(rear side)
Reed sensor
(rear side)
Snap-in pin
(rear side)