Controlled Products Systems Group HRG 220-A ST - Manual (Page 74)

Installation and Maintenance Manual
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9. Turn on the power to the hydraulic supply.
10. Press OPEN or CLOSE to run the motor and pump hydraulic fluid through the hoses. Run the
pump for the length of time determined in Step 8.
NOTE: The operator will shut off due to the ―maximum run timer‖ after 1-minute. If needed, press
RESET on the keypad and restart the operator (in the same direction) to complete the bleeding
process.
When the air has been bled from the hoses, take the following steps:
1. Turn off the power.
2. Remove the Open/Close limit switch jumpers in the hydraulic supply cabinet.
3. Check the fluid level in the reservoir and refill to ½‖ below the fill port if low.
4. Disconnect the bleeder tool assembly(s) and reconnect all hoses in the post(s). Be sure the color-
coded socket and plug are matched and connected properly.
5. Reinstall the cover plate over the hydraulic connections.
6. If the index arm was disconnected, re-attach it now. Any spaces between the arm ends and the
brackets on the post and gate should be completely filled with washers and the attaching
bolts tightened to a minimum of 75 ft-lbs.
7. Turn on the power.
8. Test the gate to make sure it opens and closes properly, and then place into service.
NOTE: The above process will remove the air from the hoses, but may leave some air trapped in the cylinder(s). If
lagging or sluggish operation persists, cycle the gates several times forcing the air from the cylinder(s) into the
hoses, then, repeat the bleeding process above.
Electrical Controls
Before servicing, turn off power disconnect switch
No routine maintenance is needed for the electrical system or controls. If the environment is very sandy
or dusty, or has many insects, make sure to seal all holes in the electrical enclosure. Blow the dust out
of the electric panel with compressed air. A qualified technician may troubleshoot with the aid of the
troubleshooting guide in this appendix. If it is necessary to call a distributor for assistance, be sure to
have your model and serial number ready. Other helpful information would include the name of the job,
approximate date of installation, and the service record of the operator, especially any work that has
been done recently.