Question about Robinair Cool Tech 34700Z Recovery, Recycling, Recharging

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34700z will operate properly till it starts charging and it shoots freon into the oil recovery tank when charging. any help would be appiciated

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Please check 1# OIL DRAIN solenoid, 2# OIL DRAIN switch, 3# OIL DRAIN CHECK valve. It sound like one of those are faulty.
Hope this will help you to solve your problem, if so please vot for my solution. Good luck!

Posted on Jul 31, 2010


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34700z only charges about .5 lbs to 1.0lbs, asks to start engine to help draw freon in. still won't charge any more. where should i start

The machine requires a min amout of 6lbs to even charge. but if you are showing any amout charging it is not the machine its self. you are looking at may be bad hoses or couplers. it is common in the winter months to have charge issues if the unit is not above 70 degrees F. dont forget there are cars/trucks out there that no matter how hard you try you can not complete a charge on the high side and you must switch over to a low side charge

Aug 06, 2012 | Robinair Cool Tech 34700Z Recovery,...

1 Answer

34700 unit when in the vacuum mode it sends R134 into the oil recovery bottle tank

Please check oil drain sensor(switch) or oil drain solenoid for any debris. If both are check OK, then check Vacuum,Recycle and charge solenoid for any debris or damage. Replace/rebuild as needed. Hope this will help you

Nov 03, 2010 | Robinair Cool Tech 34700Z Recovery,...

1 Answer

The freon is coming out at the oil/dye tank when performing a recharge???


Sep 20, 2010 | Robinair Cool Tech 34700Z Recovery,...

1 Answer

My 34700z will tell me i have 2 or 3 lbs of freon but when i try to charge even 1/2 it will say insuffecent. how do i reset the machine to get a true reading? thanks

Your machine sound like normal to me! For charging to the vehical you should have minimum 3.30 lbs of refrigerant on ISV tank. However if you wish to re-calibrate the scal,please check with my other solution where i post detail information about scale calibration.
I wish this will help you to solve the problem.

Aug 24, 2010 | Robinair Cool Tech 34700Z Recovery,...

1 Answer

I have a Robinair 34430 that will not charge, refill from new tank and will not recover. Freon used to flow through the sight glass, but not anymore. The control pad works fine and the compressor comes...

You can do the following :
1# Rebuild/Replace ''charge'' solenoid.
2# Check ''recover'' solenoid is working properly. Repair as need. If recover solenoid is OK, Then you may have to replace the "Compressor".
I hope this will help you to rectify the problem. If so, please vote for solution. Best of Luck!

Aug 11, 2010 | Robinair Cool Tech 34700Z Recovery,...

1 Answer

34700z resetting filter weight unit will not clear filter. it has a new compressor and vac pump

Check ISV tank liquid & vaipor hose.make sure it is not too much tight or lose. also check recovery,recycle & oil return solenoid are opening properly.

Jun 09, 2010 | Robinair Cool Tech 34700Z Recovery,...

1 Answer

Cool Tech 34700Z Recovery, Recycling, Recharging: when I have the system in a vacuum the liquid freo...

I don't think your machine have any problem! But if you are sure then you can rebuild oil drain solenoid.

May 17, 2010 | Robinair Cool Tech 34700Z Recovery,...

1 Answer

Our Cool Tech 34700Z will no longer charge through the high side

Please Check the following with min.2.5KG of refrigerant in ISV tank:1#Check high side small recover solenoid (in small manifole assy.) it's may neet to rebuild.2# Check main charging (in main manifold assy.)solenoid,rebuild if need.3# Check ISV tank liquid hose is connected properly & make sure it's not too much tight OR loss.3# Check high side coupler is opening properly.Hope this will help you to solve the problem.

Apr 02, 2010 | Robinair Cool Tech 34700Z Recovery,...

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