Pic please.
Bypass Valve still flowing when fully wound down
- Thread starter ChrisNason
- Start date
I'm at work so can't give you the real image but it's this type
In this arrangement shown in the left hand image
In this arrangement shown in the left hand image
That's an Aerjec.
Is it just that the connections are as shown? Or is the Aerjec also physically oriented as shown in the diagram (vent at the top)?In this arrangement shown in the left hand image
More likely that you are getting pumping over - water comes out of the vent pipe hanging over the F/E tank. You can check this visually.
The Aerjec sometime blocks up. You can check this with a magnet.
It's aligned as the left hand image...
Vent at top
Cold Feed LHS
Flow & Return on RHS
Vent at top
Cold Feed LHS
Flow & Return on RHS
I'll try the magnet check and see what I've got. Does the scum on the feed tank give you any indications?
The scum is from the inside of the radiators. It is getting into the tank either up the feed pipe or through the vent (pumping over).
The presence of the scum indicates that there is air in the system and either insufficient inhibitor or may be none.
1. Let the system cool down
2. Tie up the ball valve or turn of the supply to the valve.
3. Remove the scum
4. Bail out the tank with a jug or similar
5. Use rags/sponge to remove any sludge in the bottom of the tank.
6. Open the tap/release ball valve
7. Set motorized valves to MAN
8. Open the drain taps (usually on ground floor rads) and let clean water flow through the system until the water coming out of the drain taps is reasonably clean
9 Close all drain taps
10. Add a can of Sentinel X400 system cleaner to the tank
11. Tie up the valve.
(You will need two people for this bit)
12 Drain water from the system via a drain tap until the level in the tank is just above the feed pipe at the bottom
13 Untie the valve
14 Set motorized valves to Auto
15 Start the system and run as normal for about four weeks
16 As 1
17 As 7
18 As 8
19 As 9
20 Add a can of Sentinel X100 inhibitor to the system
21 As 11
22 As 12
23 As 13
24 As 14
25 Start the system
That is totally contrary to my experience!
But then I only repair heating installations.
Whilst I have never analysed it the impression I get is it is some form of bacterial growth which feeds on the oxygen in the air. Sometimes its jelly like and about 6mm thick.
In this particular case its thin and would have been rapidly dispersed if it had been pumping over.
Tony Glazier
But then I only repair heating installations.
Whilst I have never analysed it the impression I get is it is some form of bacterial growth which feeds on the oxygen in the air. Sometimes its jelly like and about 6mm thick.
In this particular case its thin and would have been rapidly dispersed if it had been pumping over.
Tony Glazier
It's possible that the system was running with low protection initially because I'm worried that changing out components was not matched by topping up the Fernox. But after the Power Flush I saw the inibitor going in.
Thanks for the Step by Step. I've done the bailing out and removing all traces of the scum. A few years back I added treatment by scooping out the Feed Tank to below the outlet then using a hose into the outlet to dribble it in.
I now have a Fernox magnetic filter in the system (at the same time as the powerflush). This enables me to easily add Fernox treatment. Can Sentinel can go in the same way?
Yes.
P.S. Normally you should use the "PostReply" button at the bottom of the page. The "quote" button is there if you need to quote from a post; and you can edit a quote if necessary.
The Mods can get grumpy if you quote too much.
Yes.
P.S. Normally you should use the "PostReply" button at the bottom of the page. The "quote" button is there if you need to quote from a post; and you can edit a quote if necessary.
It was relevant to your list!
The point I was making was that there was no need to quote my post in its entirety, just the relevant part.It was relevant to your list!P.S. Normally you should use the "PostReply" button at the bottom of the page. The "quote" button is there if you need to quote from a post; and you can edit a quote if necessary.
We can all read earlier posts.
There is no benefit in repeating previous posts.
Particularly for those reading on phones or small notepads you make us have to do lots of tedious scrolling.
Please stop quoting.
Tony
There is no benefit in repeating previous posts.
Particularly for those reading on phones or small notepads you make us have to do lots of tedious scrolling.
Please stop quoting.
Tony
Agile
Punishment accepted.
Any more thoughts on the scum?
Punishment accepted.
Any more thoughts on the scum?
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