Priming ESCO air hydraulic pumps
Wednesday, August 5th, 2009 10:03 AM - By Andy Mathys
Posted in category Technical Articles
Wednesday, August 5th, 2009 10:03 AM - By Andy Mathys
Posted in category Technical Articles
No Comments
Have you experienced this scenario when operating your air hydraulic pump?
You push the Pedal to activate the pump and it appears to be running as it should but, the air/hydraulic pump does not build hydraulic pressure! What has happened? Well there is a good chance that your air/hydraulic pump has lost its prime. How do I prime my air hydraulic pump? Here are a few simple steps to prime your air/hydraulic pump:
· First, connect the air hydraulic pump to your air source and attach the pump to a piece of hydraulic equipment.
· Then, using the pump pedal, activate the release button of the pump, then at the same time activate the air button, underneath the front of the pedal, with your thumb.
· Do this for about 15 to 20 seconds. This will circulate Hydraulic fluid within the pump and work out any air pockets they may be located on the hydraulic side of the pump (causing the pump to lose its prime.)
· After about 20 seconds deactivate the release button and continue activation of the air button. Your air/hydraulic pump should start to build hydraulic pressure.
Note: If your air/hydraulic pump still does not build hydraulic pressure, please call 1-800-352-9852 and ask for a customer service rep or e mail customerservice@esco.net.
ESCO Air Hydraulic pump maintenance
Friday, August 7th, 2009 11:38 AM - By Andy Mathys
Posted in category FAQ
Friday, August 7th, 2009 11:38 AM - By Andy Mathys
Posted in category FAQ
No Comments
Are your air hydraulic pumps by-passing air?
This could be caused by an excessive amount of air pressure.
What is the recommended operating air pressure?
All air hydraulic pump manufacturers recommend the operating air pressure be in the 90 to 120 psi range.
Why is high air pressure bad for pumps?
The air motor on all air operated hydraulic pumps must be able to dissipate air for it to run efficiently. With high air pressure the motor cannot dissipate the air quickly enough and this will cause back pressure and an eventual stall or air bypass.
What can be done to prevent this?
This can be prevented two ways.
1. Adjust the regulator down on your air line or compressor to the recommended range of 90-120 psi.
2. Make up a regulator and gauge kit with air quick connects and attach it to the air inlet side of the pump. Then adjust the regulator to 90-120 psi. This will also allow for easy connecting and removal for proper storage in your tool box when not in use (please see attached photo).
Note: Draining water from the shop or truck compressor daily and applying a good air tool oil (Marvel Mystery oil) into the air inlet once a day will also help minimize air bypass.
