Section 8
Electrical System
20412989
1-2012/Rev 08
8-11
Proximity Switch Maintenance
A proximity switch has failed and needs to be replaced if the LEDs do not change state,
indicating they are not sensing the piston, if an LED flashes continuously, or if the appropriate
input is not noted on the PLC processor annunciator light panel in the electrical enclosure.
Figure 8-7: Proximity Switch
1. Turn the machine off and observe the appropriate Lockout/Tagout procedures.
Severe injury can result if the machine is not properly locked out. Observe
electrical Lockout/Tagout procedures before performing maintenance on the
system components.
Ensure all pressure is relieved or blocked from the hydraulic and high pressure
circuits before performing maintenance.
2. Remove the electrical cable from the failed proximity switch.
3. Remove the two socket head screws, the failed switch and the o-ring spacer.
4. Install a new proximity switch by positioning the o-ring spacer and the switch. Ensure the
o-rings are correctly oriented.
5. Apply JL-M grease to the threads on the screws and tighten to 140-160 in-lbs (16-18 Nm).
To Next Page
Loading...
Need help?
General
