How to drain the isv in ac34700z - Robinair Cool Tech 34700Z Recovery, Recycling, Recharging

Have you changed the filter on the system?

Robinair 34788 Set Up Operation Part #1 - YouTube

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www.youtube.com/watch?v=XW8o5tahLpE
Aug 30, 2013 - Uploaded by OTC TOOLS This video takes the viewer through the entire Set Up and Operation of the 34788. The Cool-Tech 34788 ...

If it's a replaceable tank it likely has a check valve to prevent backfilling. If the tank is designed to be refilled you may need a different hose for filling it, check the manual.

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This is a common problem of Robinair 34700Z / 347002K & 347112K series machine. So don't worry just do the following, with POWER SWITCH OFF: - 1# Open front panel cover and verify the ISV tank is not overfilled. If full, carefully remove refrigerant manually from ISV tank by pressing tank valve. 2# verify if there is high pressure in the ISV tank. Purge excess air from the tank manually. (Open air purge hose from the ISV tank, then carefully press tank valve as needed to blow out excess pressure from the ISV tank)

After doing all above stapes and your problem still exist then replace air purge solenoid (Air purge solenoid located near the ISV tank and fixed with automatic air purge device). Hope this will solve your problem, if so please vote for it for farther help! Good luck

If your machine is one of the bellow Model:- Robinair 34700Z / 347002K & 347112K series. just do the following, with POWER SWITCH OFF: - 1# Open front panel cover and verify the ISV tank is not overfilled. If full, carefully remove refrigerant manually from ISV tank by pressing tank valve. 2# verify if there is high pressure in the ISV tank. Purge excess air from the tank manually. (Open air purge hose from the ISV tank, then carefully press tank valve as needed to blow out excess pressure from the ISV tank)
After doing all above stapes and your problem still exist then replace air purge solenoid (Air purge solenoid located near the ISV tank and fixed with automatic air purge device). Hope this will solve your problem, if so please vote for it for farther help! Good luck

You may overfill the ISV tank. #1 Open front cover & close LIQUID valve on the ISV. #2 Disconnect LIQUID hose from tank,then open tank liquid valve (which you close earlier) to reduce some refrigerant manually from the ISV tank. #3 after reduce refrigerant from tank, re-connect everything & switch on the machine. #4 If you still have the same problem then you have to re-calibrate the scal. I hope this will help you

Open air purge hose from the ISV tank,then press tank valve as needed to purge air from the tank

Please do the following :- With power OFF remove refrigerant manually from ISV tank.Open Liquid hose from the tank,then press tank valve as needed.Hope this will solve your problem

Please do the following:1# With main power OFF,disconnect liquid line from ISV (internal tank) & press tank valve to reduce refrigerant manually as needed.2# Disconnect air purge line & reduce access air from ISV as needed.3# Turn main power ON & calibrate scal if needed.Hope this will solve your problem.