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Racor/Parker fuel water seprator

I’m having an issue with my Racor/Parker fuel water separator that’s installed on my 2001 Beaver Patriot Thunder, CAT C12, I believe the Racor is model number is 90S1230C, series RVS and has had the RK12963 retrofit completed on it. The problem I’m having is a fuel purge mode will start randomly without hitting neither the air or H2O purge buttons on the controller. I’ve narrowed it down to times when the hydro pump is initiated to move the main slide in or out or when running the leveling jacks up or down, the separate pump engages, fuel is dumped out onto the ground and the air purge light is on. I’ve checked the controllers power source, its connect directly to the chassis battery, the ground wire was on the same stud as the hydro pump ground wire was on, so I moved it to another location but I’m still getting a random fuel purge. The controller light for H2O isn’t lit. When I try to do a H2O purge nothing happens when I push the button. I changed filters last year. Any suggestions or experience with this unit would be greatly appreciated.
Beaver Thunder 05/20/20 10:30am Class A Motorhomes

Coolant maintenance for a 2001 Beaver Patriot Thunder, CAT c12. So the coolant is 7 years old with 11,000 miles on it. The color looks good the PH and SCA levels are good. Question 1: Should I go ahead and do a flush and change out the coolant being it's 7 years old? Question 2: Has anyone had any issue switching from the standard diesel coolant to extended life coolant? The service manger at my local CAT dealership suggested I keep with the standard in a older engine, said they have experienced problems when switching older engines over too the new extended life coolant. He said he didn't understand why but a few would develop leaks and had issue after a flush.
Beaver Thunder 03/06/20 07:02am Class A Motorhomes
RE: C12 starting batteries

My C12 has two Heavy duty 8D starting batteries. George, What is the CCA for the 8D's?
Beaver Thunder 02/26/20 05:28pm Class A Motorhomes
RE: C12 starting batteries

I wanted to follow thru and let everyone know I found the source of my issue, bad ground. The problem was in the battery shut off switch, the nut that holds the stud to the switch had worked it's way loose. I only noticed this because there was a little play in the battery cable, barley noticeable. After tightening the stud the engine crank was sufficient but really slow, so I went ahead replaced the batteries with a bigger set of 31's with 1025 CCA's, huge difference. I would have preferred to go with 3 batteries but there isn't enough room to add a third battery. I also found this on the web (for what it's worth) for recommend CCA for big bore engines: Recommended mimimum CCA @temps above 32deg is 1460 Recommended minimum CCA @temps above 0deg is 1600 Recommended minimum CCA @temps below 0deg is 1800 Anyways thanks everyone.
Beaver Thunder 02/26/20 07:02am Class A Motorhomes
RE: C12 starting batteries

Thanks so the CAT help line, so I called it, they were not able to give a CCA for my engine, so I called the local CAT dealership and asked them, they said they didn't have that data and that if it was listed anywhere it should be in the Chassis manual. He did mention that it could be the starter and asked if I had done a draw test on it. So I guess first thing I need to do is check the batteries and go from there.
Beaver Thunder 02/19/20 10:31am Class A Motorhomes
RE: C12 starting batteries

A little back ground on the coach. We have owned it less than a year. It has never started cold without the Boost switch. When we bought the coach, it had recently had the inverter replaced, the prior owner said that after that, the chassis batteries would no longer stay charged. So after I got it home and doing some investigation I found that the combiner (magnum ME-SBC) wasn't wired correctly, so after correcting that issue, the chassis batteries are now being charged and maintained. My next step was to take the batteries down to get tested, I figured they were probably bad due to lack of charging (about a year), well they told me that they were fine. I've looked thru the Magnum chassis manual, CAT manual and owner manual and have not found any reference to the CCA required for this engine. Is there any other place I should look? I'm not confident that the batteries are fine either, could be one bad cell but I'm not convinced they are bad either. The batteries are only 2 years old. Anyways, long story. Thanks for the input.
Beaver Thunder 02/18/20 06:45pm Class A Motorhomes
C12 starting batteries

Was wondering if anyone on here has a C12 and what do they have for chassis batteries to start that motor. I have two Interstate batteries (model 31-MHD with 950 CCA and 1190 CA), with the batteries fully charged, I’m unable to start the engine cold without using the emergency switch. Best I can tell the starter is direct drive and the batteries are good (I have taken the batteries to the Interstate store and they have checked the batteries and say they are in perfect working order). I’m wondering if I have undersized batteries, curious what other C12 owners have set up for battery capacity.
Beaver Thunder 02/18/20 10:54am Class A Motorhomes
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