You have run the machine 10+ hours for vacuum since last oil change. so you have to change vacuum pump oil. For change vacuum pump oil just follow the bellow step: Press main menu then keep pressing up or down arrow key till display show "CHANGE VACUUM OIL'' then press "YES" key. Now vacuum pmp will run for two minute & stop automaticly. When pump stop you just open the oil drain plug & oil fill cap of vacuum pump ( Located oute side of the machine near high & low side hose ) & drain all oil from vacuum pump. After draining used oil,replace oil drain plug & fill new ROBINAIR vacuum pump oil till middel of sight glass.Press "YES" key & follow on screen messeage. NOTE: Do not over fill the pump & Do not use any COMPRESSOR oil on the vacuum pump!
Hope this will help you & if it is please vote for my support.
Hi Hassan, we have a robinair 34788 and i try to change the oil on the vacuum pump, i follow the instructions but on the screen says
VACUUM OIL CHANGE
CLEARING UNIT
and stays like that forever.
After an hour or so i just shut the machine off.
Hope you can help me.
Thank you
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For change vacuum pump oil follow the bellow step: Press main
menu then keep pressing up or down arrow key till display show "CHANGE VACUUM OIL" then press "YES" key. Now vacuum pump will
run for two minute & stop automatically. When pump stop you just open the
oil drain cap and drain all used oil from pump (oil drain cap located outside
of the machine near high & low side hose). After draining all used oil replace
oil drain cap and fill 5 ounce new ROBINAIR vacuum pump oil then press "YES" key and keep filling oil up to middle of sight glass of vacuum
pump. Press "STOP" key to complete the process.
NOTE: Do not over fill the pump & do not use any COMPRESSOR oil on the vacuum pump!
Hope this will help you & if it is please vote for my support.
Hope this will help you. If
so please vote for it. Good luck
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