[Ian Sheppard]

Also thinking the Croc clips to the battery may be a possible source of the problem as connection to the battery terminals may not be as good as it could be.

Ideally you want connectors like this http://www.fastmotorcare.co.uk/products/Pair-of-Battery-Terminals-.html

These will give you a far better connection

[SeanK]

If the controller is working o.k. for a while and then cutting out it might be a problem
with the circuit board.
When on for a while the board will heat up expand slightly and cause a brake in the circuit.
If it works again after sitting for a while then I would say that's your problem.

[Ian Sheppard]

If the controller is working o.k. for a while and then cutting out it might be a problem
with the circuit board.
When on for a while the board will heat up expand slightly and cause a brake in the circuit.
If it works again after sitting for a while then I would say that's your problem.

Hmm possible but unlikely the PCB is capable handling temperature up to 40C plus we fit heat syncs to manage any access heat on the PCB. My feeling is this is a connectivity issue

[8weekly]

Hi Steve

Before we go down replacing cable route, I am going to ask you to check a couple things.

When you switch the control on in the morning turn the flow rate down to 0 and look at the voltage displayed while the pump is effectively off and under no load.
Then turn the flow up to you normal rate and again check the voltage.

I would expect to see quite a drop when the pump is under load.

I would also ask you to check the calibration rate the control is on. This video link cover that. http://www.youtube.com/watch?v=9kKoskb7l7c&list=UL
Run the auto cal and see what the cal rate is.

Can I ask how old is the pump? plus what is the liter per min flow rate PSI and max current?

When I bought my first trolley from PF 4 years or so ago it came with a quick guide to the controller. Do you have a link to one so I don't have to remember how to auto calibrate?

The pump is the same age as the controller. I bought one of these about 18 months ago:

http://www.purefreedom.co.uk/100psi-shurflo-pumpstr-and-flowmaster-controller-on-back-plate-p-658.html

[Ian Sheppard]

Hi Steve

Before we go down replacing cable route, I am going to ask you to check a couple things.

When you switch the control on in the morning turn the flow rate down to 0 and look at the voltage displayed while the pump is effectively off and under no load.
Then turn the flow up to you normal rate and again check the voltage.

I would expect to see quite a drop when the pump is under load.

I would also ask you to check the calibration rate the control is on. This video link cover that. http://www.youtube.com/watch?v=9kKoskb7l7c&list=UL
Run the auto cal and see what the cal rate is.

Can I ask how old is the pump? plus what is the liter per min flow rate PSI and max current?

When I bought my first trolley from PF 4 years or so ago it came with a quick guide to the controller. Do you have a link to one so I don't have to remember how to auto calibrate?

The pump is the same age as the controller. I bought one of these about 18 months ago:

http://www.purefreedom.co.uk/100psi-shurflo-pumpstr-and-flowmaster-controller-on-back-plate-p-658.html

Sure no problem here is a link to the quick start guide. You will want the V9 version http://www.springltd.co/node/44

I have also added a you tube link that shows the auto cal process. . http://www.youtube.com/watch?v=9kKoskb7l7c&list=UL

Ok you have a standard 100PSI 5.2 LPM pump capable of drawing 9 amps an hour. In practice you are using 3 - 5 amps an hour.
I am still thinking connectivity somewhere is causing a big power drop which the controller is seeing.

[Tom White]

Try the following:

1.  Remove flow controller.
2.  Re-wire the pressure switch on the pump (if required).
3.  Hit flow controller with heavy object.
4.  Work with just a pump.  100m of microbore (even 60m) is enough resistance to provide a nice flow to work with.

KISS.

[8weekly]

Hi Steve

Before we go down replacing cable route, I am going to ask you to check a couple things.

When you switch the control on in the morning turn the flow rate down to 0 and look at the voltage displayed while the pump is effectively off and under no load.
Then turn the flow up to you normal rate and again check the voltage.

I would expect to see quite a drop when the pump is under load.

I would also ask you to check the calibration rate the control is on. This video link cover that. http://www.youtube.com/watch?v=9kKoskb7l7c&list=UL
Run the auto cal and see what the cal rate is.

Can I ask how old is the pump? plus what is the liter per min flow rate PSI and max current?

When I bought my first trolley from PF 4 years or so ago it came with a quick guide to the controller. Do you have a link to one so I don't have to remember how to auto calibrate?

The pump is the same age as the controller. I bought one of these about 18 months ago:

http://www.purefreedom.co.uk/100psi-shurflo-pumpstr-and-flowmaster-controller-on-back-plate-p-658.html

Sure no problem here is a link to the quick start guide. You will want the V9 version http://www.springltd.co/node/44

I have also added a you tube link that shows the auto cal process. . http://www.youtube.com/watch?v=9kKoskb7l7c&list=UL

Ok you have a standard 100PSI 5.2 LPM pump capable of drawing 9 amps an hour. In practice you are using 3 - 5 amps an hour.
I am still thinking connectivity somewhere is causing a big power drop which the controller is seeing.

That's the one. Cheers.

[8weekly]

Didn't get the time to follow your instructions Ian, but no problems today. Whether the fault was to do with length of cable or perhaps something else that taking the crocodile clips and fuse holder out and putting them back sorted I don't know, but hopefully problem solved. Now I have two leisure batteries though. 

[Ian Sheppard]

Glad to hear the issue is sorted Steve pleased to be able to Help.