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ELECTRIC CIRCUIT
CASE TRAINING CENTER
AUGUST 2000
Hydraulic oil temperature gauge
1) Circuit configuration
CM00F008
1. Instrument panel
2. Main electronic control box
3. Hydraulic oil temperature sender
4. Hydraulic oil temperature gauge
5. Series connection
2) Operation
A. The hydraulic oil temperature sender (3) attached to the inlet pipe sends a signal to the main electronic control box
(2).
B. The main electronic control box (2) calculates the number of bars to be displayed and sends the information to the oil
temperature gauge (4) via the series connection (5).
C. When the 8th bar is displayed on the hydraulic oil temperature gauge, the message “OVER HEAT” appears on the
instrument panel control screen (1) and the audible warning device sounds.
1
4
5
2
3
8
7
6
5
4
3
2
1
20 30 40 50 60 70 80 90 100
98
ON
OFF
95
ON
OFF
88
ON
OFF
80
ON
OFF
60
ON
OFF
45
ON
OFF
25
ON
OFF
Hydraulic oil temperature (°C)
Hydraulic oil temperature
gauge bar
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