Stall condition

[dholic]

I am experiencing a stall condition with my slave pump according to the troubleshooting guide(flashing red/green). Some background, the master is a pump I bought 2 years ago at Marine Depot, might even be 3 years(fall of 2006?). The master works day in, day out. The slave I purchased about 6 mos later, it too is probably 1st gen. I preordered the wave drivers when they came out and just last week, purchased another wet side for the slave. This is my 2nd wet side replacement(3rd overall) for the slave but noticed the propeller portion is now one piece. Anyway, just installed the new wet side which is the 3rd wet side for this pump and I'm still getting a stall condition. The oldest pump(which is the master) runs quite well with it's 2nd wet side replacement.

There are wear marks on the magnet if that helps. Wall thickness is 5/16" so I've typically set the spacer at 1/4 but have set to 3/8 but either way, over a year or two, this pump has been troublesome. Seems like every 3 weeks or so I get a stall and have to leave the unit off for a day, reset the wet side, clean it but the issue comes back. This pump has been shipped back to you guys one time for repair.

Love the product. What can I do to correct this?

 

[EcoTech Marine]

If the pump is stalling even without a wetside, it probably is the motor that is causing the problem. Since you have multiple pumps, would swap each component (wet side/motor/driver/powersupply) between your two pumps one at a time until you can be certain which component is the troublesome one. We can then get you a replacement for that.

 

[dholic]

Thanks for the post Tim.

Update: I continued to try the new wet side with the motor set to 1/4" pin spacer, nothing but stalls. Removed the wet side with motor in hand, powered up the motor no stalls which probably doesn't explain much. I changed the spacer to the smallest setting(3/16?), prop was spinning for a minute or so until the wet side became dislodged from the motor. Increased pin spacer to 3/8", no stalls and no dislodging, working great(fingers crossed). I hope that running the spacer at 3/8" for a 5/16" tank wall won't prematurely wear out the new wet side, will it? Does this data make sense for a 5/16 tank wall: 3/8" pin spacer no stall(for now), 1/4" spacer stalls, while 3/16 works but dislodges?