Compair Holman Zitair 125 - thermal cut out switch or switches?

by Michael
(Devon England)

Hi Bill


I have the above compressor which I use to drive a lateral cutter which re opens connections in drains after they have been lined.

The compressor has run this tool with no problems until recently.

Now I can use the compressor and lateral cutter for around 20 mins then it switches itself off.
Wait 10 - 20 mins then I can re start it and use again for around the same amount of time and it will cut out again.

My question is does this compressor have a thermal cut out switch or switches that is causing this, if so where are they located and which one is most likely to be at fault.

I have these numbers from compressor

SCN B1374A PC002592
Cool technology Ltd
R34560-22
132310293

Any advice would be greatfuly recieved.

Kind Regards
Michael

______________________
Bill says...

Michael, the "cool technology" reference is to the manufacturers of the compressor tank, www.pressure-vessels.co.uk/

And yes, it sure sounds as though your compressor is shutting down by an overload switch tripping.

We will have to rely on someone that is using or has worked on a Compair Holman Zitair 125 compressor for help here, Michael.

Cheers,

Bill





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Dec 09, 2015
Manual
by: Jorge

Can you send or publish the manual and Holman compressor parts Zitair 125 ? Thank you

┬┐pueden enviarme o publicar el manual de usuario y de partes del compresor Holman Zitair 125? Gracias

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compair hydrovane hvo7

over temp cutting out

Anyone know the circumstances that cause a Compair Hydrovane to cut off on thermal?

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Mar 21, 2013
compair holman zitair manufactured 1994
by: zimbeva kangelani

i bought a second hand compair holman compressor manufactured in November 1994, 18,4 litre capacity, max. temperature +120 degrees & minimum -10 degrees, from the UK and am in Zimbabwe, am experiencing a couple of problems as follows:
a) i discovered that it came without an accelarator unit, what is the effect of using it without this unit when drilling?
b) this machine is constantly switching off during the course of drilling, what could be problem?
c) the compressor is producing hot pressure into the hose for a distance of approximately 10m from it, which is leading hoses to burst, what could be the problem?
d)when running the machine should we leave its doors open or closed? what is the effect of either?
e) can these issues be rectified?

thank you

kangelani


Jul 27, 2012
New HV07?
by: Carls421

Hi,
By your comment, i am guessing it is one of the vertical HV07 Compressors? A few of these suggestions may sound basic, but people do sometimes overlook them

Low Oil - Replace or top up
Cooler Blocked - Blow out with Airline
Air Filer Matt Blocked - Replace
Air Flow - Ensure the compressor isn't in a room with high ambient air temperature

There have been problems in the past with these as the Air Intake Filter and the cooler are on top of each other causing the hot air blown out goes straight back into the Intake, over time this increases the temperature of the compressor, causing overheating - Bad design, yes, remedy - Duct the air out, away from the intake.

Otherwise you could have a problem with the temperature sensor itself, might be worth replacing.

Hope that helps

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Looking for manual for Compair Holman 70D i

by Neil Jonathan Spragg
(Evesham)

Hi i reciently aquired a Compair Holman 70D i have enquired at compair for a sirvice and operators manual with no luck can anyone help

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ComAir Kellogg only works when reset is held in .

by Doyce Farris
(Corbin, KY)


I have a Comair Kellog model B335UB sn V9J6186PFZI air compressor. It has a Baldor Industrial 5hp 3 Phase motor. It had been working fine for years. The compressor would not come on this morning.

I found that I could hold in the reset button on the Furnas Controller model PN XF-5-230 and the compressor will run but it will not shut off when it gets pressure built up.

I think it could be the Pressure switch but I do not know how to check. I would also like to know if you have the parts for this. Thanks Doyce

__________________
Bill says...

Hello Doyce.

It has been my experience that when a compressor builds pressure to the normal cut out pressure level and doesn't stop, that it is the pressure switch that is at fault.

It is the pressure switch that senses the pressure in the compressor tank.

When that pressure falls to the preset level of that switch, it trips, and power flows to the motor.

As the motor runs, the pressure in the tank rises, until it reaches the cut out pressure level. At this point the pressure switch should trip off, cutting power to the motor.

In pressure continues to build in the tank as the pressure level bypasses the normal cut out, it signifies that the pressure switch has failed.

Replace it. Fast! It's dangerous to run an air compressor that will not shut off.

Cheers,

Bill

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Feb 26, 2013
Blowing fuse
by: Anonymous

Here's a thought, if you are blowing a 13 Amp fuse, could you be pulling more than 13 Amps?
My 2.2kW compressor pulls 27 Amps for about 3/4 of a second on start. Cured by wiring into a 64 Amp supply from the cooker outlet and protecting it with a motar rated 30Amp fuse.
Very roughly, 2.2kW on 220 Volts is 10 Amps running current.
Allow 3 times that for start up.

When you say the pump turns freely by hand, you are turning at the same speed the motor is trying? Usually 700 rpm or more
Regards
Grog

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