Question about Robinair Cool Tech 34700Z Recovery, Recycling, Recharging
Hi, TIA. This is actually a 34700 post date split not a 34700Z. This was the only category I saw available. I purchased a 34700 in unknown working condition. My plan was to fix it up for my pops and give it to him for his garage. It needed both 96" hoses and all 3 36" hoses. I also drained and put new Robinair vacuum oil in the vacuum pump. The filter/drier appears to be new. After purchasing these I tried the unit. Unfortunately it will not clear nor will it add refrigerant. I called Robinair tech support they had me clean some of the solenoids, that did not help, nor do they seem to turn on for this process anyway so I'm not sure what the point of that was. At any rate, they had me check the vacuum at the suction port of the comrpessor. IN this particular unit this is the older compressor with all 3 fittings on one side. the 1 out of 3 fittings that point down is the suction. Without unhooking the other 2 and putting a vacuum gauge on the suction port I actually saw a little bit of vacuum when performing a 'mock add refigerant'. I asked them if this certainly meant that the compressor was bad and that it could not be an issue with the other two lines. They assured me it was a bad compressor. I ordered another compressor and installed it, I experience the same behavior, although, this time I unhooked 2 of the 3 lines, and if I put my thumb on one and gauge on the other I get good vacuum and quick. Any thoughts? Thanks Chris
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Posted on Jan 02, 2017
Please do the following 1# Check your machine ISV tank liquid line quick connector.it's seems to be very tight,open little & try to charging.2# Rebuild charging solenoid.
Posted on Jun 25, 2009
Please check the following: Low side manifold gauge is going to -13"HG while you recover refrigerant from the vehicle.If low side gauge not rich to that lavel then vacuum sensor will detect pressuer &
it will stop you to make vacuum until you fix the problem.If it happen you may nee to rebuild/replace one or more of this solenoid.1#Vacuum solenoid 2# Recover solenoid.3# Recycle solenoid.Also check Low/High side small solenoids ( In the small block assy.)
If all of this solenoids working properly then check Vacuum pump capacitor & vacuum sensor.Hope this will help you to solve your problem.
Posted on Apr 09, 2010
Don't worry this is normal.Because while machine is running for vacuum or recycle mode,automatic air purge device will active for some time & it will purge air from ISV.
Posted on May 28, 2010
SOURCE: Robinair 34700 recovery problem
It sound like one of the pressure trunsducer is not working or disconnected from the manifold assy.or from ISV tank.Please check Low,High and ISV tank pressure transducer
Posted on Jul 10, 2010
SOURCE: Hi, My robinair model 34700Z
It is clear to me you need to Replace the Compressor! But if you want to make sure yourself, please do the following: Press recover & fix a vacuum gauge on your machin Compressor suction port & monito the gauge is going up to13"HG suction,if not then you need to replace the compressor.
I wish this will help you to solve the the problem. if so, pls vote for it. Good luck!
Posted on Aug 11, 2010
Testimonial: "Thanks, I will try it"
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