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Alberta, are there physical limits in the gearbox for open and closed? Is there a method to get out if the door fails? Like a pull chain to release the brake or similar? Thanks for posting. Did not know those existed.

I doubt they are faulty... It's about the flow rate. The dema has a wide flow rate range and the nozzle bushings are what narrow it down so that it can create a venturi (unless you are using a b model which has a bypass screw to adjust as mep said). Since you were able to get suction from a...

Google can help with pictures. It's the electric part of a solenoid valve. I just remembered that ginsan uses a special mutiplexing device to shut off the trickle valve. Gs27d. If it's not the coil, that would be the next device to swap with a good bay.

It's not something stuck. Try swapping the coil of the trickle valve.

Sounds like the timer triac is sticking on. I would swap timers from good/bad bays first. If the problem stays on the same bay, you possibly have something like the trickle valve pulling too much current.

That's funny, because we have to fix a couple every few days. They have issues with the drive wheel axles snapping. I think its because they put on-board blowers without thinking about the added weight. And wheel bearings are constantly failing. And the brain is basically brain-dead... If a...

You can remote connect directly from the app to the NVR. You do it by IP address, and you have to have ports 37777 and 37778 forwarded to the IP of the NVR. You also need a static public IP. It still works after their cloud service shut down.

Since those are discontinued, what is your plan moving forward? We have just removed several egj units that died from being blasted by undercarriage for years. They held up very well considering the environment. We have put in shaft extensions through to equipment room on locations that work...

Its not the wild leg. The issue is with the sonar. Your notes didn't mention the setting on the sonar. The universal sonars have to be configured for the equipment type using a magnet. I'm sure that was done, but mentioning it anyway. Have you tried swapping the front and rear sonar?

That's how the car jacking of one of our vacuum customers ended last week! Luckily, it was the gas station in front of us (where he crashed the other stolen car before car jacking our vac customers car) that got all the press! He was armed and police took him out once he was inside the car...

Based on this latest info, you need to trace down a control wiring or component problem. Something is likely powering the contactor coil if turning the breaker off makes it release. You need to check for control voltage when it's stuck on like mentioned above. If you have full control voltage...

I think you mean the contactor - the relay that puts power to the motor. Is that what you are talking about? A breaker will 'trip' and turn off power to the motor, but it will stay that way until it gets manually reset. They don't "get stuck". A stuck contactor means your contactor is...

If you removed the check valve temporarily, would it cavitate? Maybe a larger flow one might be all that is needed.

So the air isn't causing the cavitation.. I don't understand why the pump would be starving. There is no metering valves in the plumbing between the pump and chemical tanks? It still shouldn't hurt your pump to cavitate for a couple seconds compared to the damage of having the chemicals run...

Where does the air inject?

That's good... So then what's the problem? It shouldn't starve during a purge if everything's 3/4"? Certainly, it would have the chemical solenoid open during the purge as that it the whole point - to get the chemical to the bay faster...

Why would it use too much chemical if you have water from the pump diluting it to a desired final concentration? If you can turn the pump slow enough, the result concentration should be around the same? I.E. If the pump was rotating at 10% and gave the desired result coming from the mix tank...

It sounds like the system is designed to pull water from the tank also, not just the hydrominder tanks - even on low pressure options. Have you thought of richening up the products and allowing the hot water solenoid on all the time for low pressure? How slow can you spin the pump on low...

You mentioned the pump starving when it runs a full speed with no switch on during purge... That means that there is a solenoid on the hot water gravity tank also? If so, where does the water come from when you use low pressure products?

Where does it get its water if you have both selections off?