I'm wondering if anyone has experienced this and if you might have any insight into the problem. I have an Omcan MT500 vac sealer. I've been using for a few years and it has always worked perfectly giving me upwards of ~ neg 0.8 bar of suction. A few days ago I was packaging up some recently cured soppressata and nearing the end the unit would suddenly not go beyond ~ neg 0.3 bar.
I popped the housing off and everything looks pristine. While running if I put my finger over the suction hole it does jump to neg 0.7 ~ I would think this would indicate a gasket leak, but they look perfect.... and I put new gaskets in with the same result... So for anyone with experience here a few questions if I might;
Is it possible for gaskets that look perfect suddenly fail and leak somehow?
The leak may be under the gaskets. Is anyone aware of a removable gasket sealer/adhesive that I could seal the gaskets in their channels?
Anything else you think it might be? I use it fairly regularly but this is a higher end unit so I can't see that the pump is shot... the piston appears to be moving fine. I was wondering if the pistons could ever benefit from lubrication but this is an oil free unit.
I don't know that unit to recommend a repair. Have you checked with Omcan for a solution ?
Based on my unit I know the gaskets are very important.
Some places recommend a light oil coating (salad oil.... not motor oil).
I don't think the gaskets get sealed in place.
Typically vacuum pumps have four carbon vanes and cannot be lubricated.
When you cover the suction hole(s) you get a high vacuum which means the pump should be ok.
I can't find any details or pictures of the actual motor/pump assembly. It's called an oil less vacuum pump. If it does use carbon vanes like most vacuum pumps.... getting oil on the vanes will ruin them. They must remain dry. I'm seeing some small diaphragm type pumps too.
This picture is in the parts listing. Don't know if it's an actual or representative picture.
Hard to tell construction of it.
I couldn’t find another section so forgive me is this is misplaced.
we have a Christmas tree base and want to remove the existing water and replenish it.
I’m thinking the best way to get the water out is a small in-line pump with like a 3/8” hose.
anyone have any other suggestions?
GE Profile
PVM1870SM1SS
13 years old
About 2 months ago, the fan would still run with the door open. Microwave was off, just fan running. Seemed to cook just fine. Thought maybe door switch stuck? However, a few times when I opened the door before cycle over (instead of pressing pause) the circuit would trip. I’ve always done this.
A week ago, microwave stopped working. Fan would run and timer would count down, but food not heating. I can hear that it is only the fan. I then played around with it, trying time cook, starting/pausing, opening closing door, etc, and it started working again after 5 minutes. Worked for a week and now it’s not, for about 5 days now. Not sure if it’s worth trying to replace switches. If I do, can this be done without removing microwave?
Thanks!!
Dave
12-21-21, 04:55 PM
