
Installation and Maintenance Manual
52
General Maintenance
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 be certain 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.
Pressure Relief Valves Adjustment Procedures
To check your relief valve setting, first disconnect the hoses. Run the operator either open or closed (the
gate will not move with the hose disconnected. The relief valve is found on the rear of the hydraulic
power unit. It has an adjusting head and lock nut. To adjust, loosen the lock nut and screw the threaded
bolt clockwise for increased pressure, counterclockwise to decrease pressure.
MODEL
FACTORY
RELIEIF
SETTING
HRG
220
1350
PSI
HRG
222 1350
PSI
There is only limited value in using the relief valve as an entrapment protection device. Photo Eyes or
gate edges are the best methods to protect pedestrians and maintain reserve power to reliably drive the
gate.
Содержание HRG 220 ST
Страница 15: ...Installation and Maintenance Manual 9 Swing Gate Post Details ...
Страница 16: ...Installation and Maintenance Manual 10 HRG 220 Pump Pack ...
Страница 17: ...Installation and Maintenance Manual 11 HRG 222 Pump Pack ...
Страница 18: ...Installation and Maintenance Manual 12 How Our Hydraulic Swing Gates Work ...
Страница 25: ...Installation and Maintenance Manual 19 Instructions for Hand Pump or Manual Operation ...
Страница 29: ...Installation and Maintenance Manual 23 ...
Страница 47: ...Installation and Maintenance Manual 41 ...
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Страница 62: ...Installation and Maintenance Manual 56 Battery Connection Diagram ...
Страница 63: ...Installation and Maintenance Manual 57 Battery Connection Diagram ...
Страница 65: ...Installation and Maintenance Manual 59 Wire Size Schedules ...
Страница 66: ...Installation and Maintenance Manual 60 Parts Breakout HRG 220 Pump Packs ...
Страница 67: ...Installation and Maintenance Manual 61 Parts Breakout HRG 222 Pump Packs ...
Страница 68: ...Installation and Maintenance Manual 62 Parts Breakout Control Box ...
Страница 69: ...Installation and Maintenance Manual 63 Parts Breakout Post ...
Страница 70: ...Installation and Maintenance Manual 64 Parts Breakout DC Power Supply ...