Holder C-Trac 4.74 - Manual (Page 148)

Operating instructions
149 443 147
C 4.74
Troubleshooting guide
Problem Cause Remedy
Position control not always working Potentiometer ranges shifted
Actuator for angle sensor out of
adjustment
New calibration with Opus
Readjust and recalibrate angle sensor
Directional control valve leaky Foreign particles in seat valve Remove, clean or replace valve
cartridge
No pressure build-up Slide valve in input plate stuck
(foreign particles) Remove, clean slide valve or replace
plate
Strong oil flow fluctuation in flow
divider I or oil flow too low Lack of oil Higher RPM, reduce demand of 2nd
load
Troubleshooting is also possible with Opus or the PC soft-
ware in the menu
•
Keyboard Check: Keyboard buttons.
•
Output functions XO...Y3: Check if box provides
current for valves.
•
Rear power lift position limiter: Functions of lift posi-
tion control.
•
Cushioning device: Functions of hydraulic implement
cushioning
•
Desired value channel.
•
FCE1: Joystick functions.
•
Diagnosis of master inputs.
•
Diagnosis of BKN nodes.
Use the circuit diagrams and wiring diagrams.
Also refer to the Bucher Hydraulics operating instructions.