Vac pump problem
- Thread starter Dai Sensei
- Start date
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johncrane
Member
That's no good Neil, was there any smoke when you turned it on,
Dai Sensei
Member
Not that I saw. It still runs Ok, just very little suck, not even enough to register on the gauge.
I've been onto the seller and he has said to send it back to check it out.
Cheers
I've been onto the seller and he has said to send it back to check it out.
Cheers
leestoresund
Member
Huh?
Oh, this isn't a holiday weekend in Australia.
Lee
Oh, this isn't a holiday weekend in Australia.
Lee
Does it take Vacume pump oil? If it does have you checked the Level?
MesquiteMan
Retired Head Moderator
Neil,
By the looks of the photo, this is a rotary vane pump. This means there is no diaphragm. If it takes oil, this will confirm. Be sure to check the oil level. If the level is low, you will not get good vacuum since the oil is there to create the vacuum, not just lubricate the parts. Be sure to always start the pump without any vacuum load and be sure to release the vacuum before turning off the pump.
By the looks of the photo, this is a rotary vane pump. This means there is no diaphragm. If it takes oil, this will confirm. Be sure to check the oil level. If the level is low, you will not get good vacuum since the oil is there to create the vacuum, not just lubricate the parts. Be sure to always start the pump without any vacuum load and be sure to release the vacuum before turning off the pump.
Dai Sensei
Member
Tried it again this morning and it worked fine, for the first hour that is, then after stopping for 20mins and trying to restart the same thing happened.
Yes, but level Ok
Oh well, diaphragm is not the problem
.
The problem occurs when the chamber is empty and not under vacuum, so load doesn't seem to be the problem.
Why do you need to release vacuum before turning off? I have a release valve, so can do it easily, does it damage the pump? I haven't been, nor does instructions mention it, so I hope it doesn't damage the pump :redface:.
Thanks for the input
Yes, but level Ok
Oh well, diaphragm is not the problem
.The problem occurs when the chamber is empty and not under vacuum, so load doesn't seem to be the problem.
Why do you need to release vacuum before turning off? I have a release valve, so can do it easily, does it damage the pump? I haven't been, nor does instructions mention it, so I hope it doesn't damage the pump :redface:.
Thanks for the input
MesquiteMan
Retired Head Moderator
Two reasons to release the vacuum before turning off the pump...
First, due to the way these pumps work, there is some oil picked up during the vacuum generation process. If you turn off the pump with that oil still in the cycle, then when you start it up next time, it will likely spit oil out the exhaust port and also causes premature wear. The second reason is, if you pump does not have a check valve, then it is possible that when you turn off the pump and the vacuum "drains" back into the pump, it can suck whatever is in the chamber back into the pump as well. If you are using the chamber you got from me then this is not likely since the stabilizing resin should not be near the vacuum port.
Also, you may want to make sure the lid is seated on the chamber properly. Sometimes you may have to push down on the lid a little to get the gasket to seal and start the vac process. Normally, after you have used it for a while, the gasket will develop a "memory" and conform to any irregularities of the lid and as long as you put it back in the same spot, it should seat just fine. Are you sure it is your pump and not the chamber?
First, due to the way these pumps work, there is some oil picked up during the vacuum generation process. If you turn off the pump with that oil still in the cycle, then when you start it up next time, it will likely spit oil out the exhaust port and also causes premature wear. The second reason is, if you pump does not have a check valve, then it is possible that when you turn off the pump and the vacuum "drains" back into the pump, it can suck whatever is in the chamber back into the pump as well. If you are using the chamber you got from me then this is not likely since the stabilizing resin should not be near the vacuum port.
Also, you may want to make sure the lid is seated on the chamber properly. Sometimes you may have to push down on the lid a little to get the gasket to seal and start the vac process. Normally, after you have used it for a while, the gasket will develop a "memory" and conform to any irregularities of the lid and as long as you put it back in the same spot, it should seat just fine. Are you sure it is your pump and not the chamber?
Dai Sensei
Member
Thanks for the feeback.
No, definately the pump, I have disconnected the chamber and put my finger over the connector - zip sunction.
I have had many discussions via email with the manuafacturer and he couldn't explain it and just suggests to send it back. I'll have another go this weekend and see what happens. May well send it back whilst waiting for some more Cactus Juice :wink:
Cheers
No, definately the pump, I have disconnected the chamber and put my finger over the connector - zip sunction.
I have had many discussions via email with the manuafacturer and he couldn't explain it and just suggests to send it back. I'll have another go this weekend and see what happens. May well send it back whilst waiting for some more Cactus Juice :wink:
Cheers