Sentex and Stanley Gate Products to replace your existing  operators, control panels for electric gates. We also have spare parts Upswung LLC

gate operators
    US Mail: P.O. Box 2713, Stateline, NV 89449
Sentex and Stanley  Factory Replacement parts and Gate Openers and Control Boxes for your Sentex / Stanley Gate Operators. Call for expert advice from licensed installers.
Contractors Lic.  NV. #57900 CA #363787   Since 1978 

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Spare Parts

HL410-11
115 volt

HL410-21 
230 volt 

HL410-290
230 volt

HL410-390
  230 volt

HL410-440
230 volt
How to add oil to Hydraulic arms
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ADDING OIL TO SENTEX HYDRAULIC ARMS

Click on the MODO 290 PDF  you will find an exploded view of the MODO290, so please take a look to the drawing in order to better understand how to proceed for oil refilling.

 

 
  1. Remove the front fork from the rod (nr 31), this may be not easy because it is glued with loctite
  2. Remove the black plastic cover (nr 28) by pressing the two small wings to the center with  pliers
  3. Remove the plastic cap of the manual release device (nr 14 & 16)
  4. Pull the aluminum carter. Now you have the naked piston
  5. Open the dowel (nr 19 ) and maintain the operator with this side up, like in the drawing.
  6. Now you can use a plastic funnel to refill the operator.
  7. fill the funnel of oil
  8. Connect the operator to power supply and make some cycles of "opening & closing", This will will the cycle the rod. During these "cycles" the operator will take the oil inside by itself.
  9. In the meanwhile, look the oil surface inside the funnel and check if some air bubbles come up.
  10. When you will not see air bubbles to come out for more than 3 or4 cycles, you are sure that there is no air inside the circuit.
  11. Disconnect the operator from the power supply WHEN THE ROD IS COMPLETELY INSIDE!!! this is the most important step!!!
  12. Remove the oil from the funnel, with an oil syringe.
  13. Close the dowel (nr 19)
  14. oil refilling is complete.

First cycles after this operation the operator may not move regularly, it take some cycles to work properly.

Concerning the oil you have to use for the Hydraulic operators, you have to buy SHELL APR HC 13. Pay attention to do not mix oil inside these operators, If you do not find SHELL, you can use another brand with the same characteristics. 
 
 

Hydraulic Gate openers installations should be completed by a qualified installer only. Sentexparts  assumes no liability if product is installed incorrectly. Please see owners / installation instructions for complete details.

 

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