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Farmer 400
Fav 700
Fav 900
Electrics / system in general
Pressure-operated switch S025 and flow monitor S026
E
Testing
6.3.2001
9000
000091
E
a
2/9
Capitel
Docu-No.
Index
Date
Version
Page
Pressure-operated switch S025 and flow monitor S026
Text-module
Flow monitor S026
Component description, function and testing
Bullet-List
●
Possible other designations: high-pressure filter (=FENDOS)
●
Versions (chronological): in earlier types auxiliary pump was monitored by pressure-operated switch
●
Installation: oil flow direction as per stamped arrow
●
Function; Switching properties: opening of baffle plate depends on flow, i.e. static pressure does
not cause opening. Operating points depend on oil temperature, i.e. the warmer the oil, the larger
the oil flow must be to open switch.
●
Characteristics:
PM-Picturemodule
PM-Picturemodule
Text-module
Bullet-List
●
Terminals / labels
PM-Picturemodule
Text-module
Bullet-List
●
Test values:
Text-module
Reference values
At approx. 30
°
C oil temperature At approx. 65
°
C oil temperature
Oil volume increasing
6-6.5 l/min
8.6-9.7 l/min
Switch opens at
Oil volume decreasing
approx. 5.5 l/min
9.7-8.2 l/min
Switch closes at
PMTAB_Picture
Circuit diagram symbols
PMTAB_Picture
Detailed internal structure
Pin
Meaning
1
Signal
2
Earth
PMTAB_Picture
Test circuit
Position
Meaning
Condition
Condition in tractor
Test value ohms
0
Rest
Closed
Insufficient oil
0