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How to swap defective compressor on Robinair 34700Z?

Posted by Tsvetomir Betuhovski on


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Please call the manufacturer on toll free number for assistance shown in link below:

Posted on Jun 30, 2020

Testimonial: "Yeah I tried, they forwarded me to the local authorized dealer which wasn't helpful. They ask me to bring the machine there. Does anybody knows what is the procedure of replacement?"


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Robinair 34700z will only fill 1/2 of recommended refrigerant

Try running the compressor for a while,then see if you can get more into the system on the low side,not the high side while it is running,until the sight glass on receiver dryer clears from being milky.

Jul 30, 2014 | Robinair Cool Tech 34700Z Recovery,...

1 Answer

I have a 34700Z robinair that is having issues... When I can command either a recovery or vacuum , the machine goes thru the process of both but nothing happens. The machine is inoperative. I put a voltage...

if you have no power to the compressor then you know what the problem is... you are not getting power where it needs to go...
Sounds like a contactor or relay problem.
Trace the wires backwards with your meter till you find where the power is stopping at.
The you should be able to figure out what the ultimate problem is...


May 14, 2011 | Robinair Cool Tech 34700Z Recovery,...

1 Answer

I need a service and repair manual for 34700Z

This is not possible to get it from this site, because of copyright. You may try to get it from local robinair service center of you area. Also you can check to robinair web site at

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

2 Answers

Hi, My robinair model 34700Z wont recover refridgerant from a vehicle or lines. It goe through a vacuum cycle and charge cycle fine. It also wont transfer from my source tank or Recycle . It has 61 hours...

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!

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

1 Answer

When I try to recover the compressor does not come on, but when I do vaccum the compressor comes on and work fine. Do you have any ideas what is going on?

Pls check your machine compressor herness in main control boared & make sure it is connected properly.If herness is good then you may nees to change Main circuit Board KEYPAD. It seems to me defective. hope this will help you, Good luck!

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

1 Answer

34700z will not evac.even after i put a new compressor in it

Pls check vacuum solenoid (in main manifold assy.) it's may need to rebuild OR replace.also check vacuum sensor & make sure it is working froperly.

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

1 Answer

Robinair 34700z not filling source tank / slow recovery

Please check the following:1# For not filling ISV tank (internal storage vassel) Check tank fill solenois,it's may need to rebuild or replace.2# For not compleet recovery,Check & make sure your machine compressor haveing 13''HG suction.if not then you have to replace new compressor.3# Check 13'' vacuum sensor is working properly.

Jul 30, 2009 | Robinair Cool Tech 34700Z Recovery,...

1 Answer

Machine will not clear existing pressure

Please check your unit compressor also & make sure compressoe haveing minimum 13''Hg suction.

Jul 03, 2009 | Robinair Cool Tech 34700Z Recovery,...

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