Section 8
Electrical System
20412989
1-2012/Rev 08
8-12
Ensure that the proximity switch is properly installed and secured prior to starting
the machine. Failure to tighten the two hold down screws on each switch will
result in the spray of hydraulic oil.
Optical Relay Maintenance
The four optical relays identified in Table 8-3 change the state of the associated solenoid valves.
If the relay or the fuse for the relay fails, the state will not change. For example, if the relay
controlling the two-pressure solenoid valve fails, the machine will not switch between low and
high pressure operation.
Table 8-3
Optical Relays
Label Component Function
4K1 Directional Control Valve, Solenoid A Switches the direction of the hydraulic flow
4K2 Directional Control Valve, Solenoid B Switches the direction of the hydraulic flow
4K5 Two Pressure Solenoid Valve Switches to low or high pressure operation
5K9 Water Supply Valve Opens and closes the inlet water solenoid valve
To Next Page
Loading...
Need help?
General
