Yetter 2940 Short Floating Air Adjust Residue Manager - Manual (Page 47)

47
PRE OPERATON TEST CHECK
LEAK TESTING
This leak testing procedure is for the 2940 Air Adjust compressor system consisting of an
electric compressor with 20-gal tank, regulator control interface, tubing, and air bags. This
procedure shall be performed at the beginning of each season of system use and every
20 hours of in season use.
In addition, it should be performed if the user notices a
lack of air pressure availability or if the compressor is running an abnormally high
duty cycle. It will help keep the duty cycle in check, thus extending the life of the
compressor.
Leak Testing Procedure:
1. Ensure the Tank pressure is above
90 psi and at least 50 psi is in the Lift circuit.
2. When Tank pressure drops 2 psi, start a timer.
3. Note the Tank pressure in 2 minutes.
4. If the pressure drop is greater than
5 psi, check the Lift pressure plumbing for leaks.
Repair as necessary, and test again.
5. Then do
steps 1-4 with at least 50 psi in the Down circuit and repair leaks as
necessary and retest.
AIR COMPRESSOR PRE-OPERATION TESTING
This testing procedure is for the 2940 Air Adjust compressor system consisting of an
electric compressor with 20-gal tank. This procedure shall be performed at the beginning
of each season of system use. In addition, it should be performed if the user notices a
lack of air pressure availability. It will let the user know if the compressor is in good
condition, thus providing adequate pressure supply for the system.
AIR COMPRESSOR PRE-OPERATING TEST PROCEDURE:
1. Before beginning this test, run the compressor system leak test and ensure it
passes. There should be virtually no leaks in the tank circuit before performing this
test.
2. Start tractor if not already running. Test results will be skewed if compressor
supply voltage is inadequate (13.8 VDC no-load recommended).
3. Start a stopwatch when the Tank pressure reaches the 85 psi pressure valve.
4. Note the time to build 10psi in the tank.
5. If the time recorded is greater than 60 seconds, the compressor is either leaking or
is considerably worn. Consider servicing or replacing the compressor before using.
If no action is taken and the compressor continues to be used, closely monitor the
2940 Air Adjust system pressure availability.