View Full Version : How obvious should the speed control be on HLP pumps?
I have an HLP 5025 pump, it has the 3 speed controller on the top.
When I adjust this control it doesn't seem to make any difference to the water output!
I'm just wondering should the drop in water output be pretty obvious? I'm worried it might be stuck on a lower setting!!
If so what is the best way to dismantle the speed controller box? I have removed the screw from the top but don't want to force the box off in case I break something!
Thanks!
Stuart Bertram
09-02-09, 18:11
There should be a big difference between 1 and 2 but not so much between 2 and 3.
See the pressure chart on our website which shows the 3 settings
http://www.theaquariumsolution.com/?q=node/114
How old is the pump?
Stuart
I bought the pump second hand unfortunately so I am not sure! I would say a few years.
Looking at the chart I should be able to tell a difference between 5000 and 2000lph when switching speeds as its a closed loop.
How does the speed switch work? Does it use different windings or resistors in the box?
If I could get the box open I am sure I can fault find it with a meter. Just dont want to break the pump as its a lovely bit of kit!!
Got the box open and its had water in it! Speed control is nice and crispy!
So I am going to see if I can wire it up so the motor is in full speed all the time or get a new controller.
Got the box open and its had water in it! Speed control is nice and crispy!
So I am going to see if I can wire it up so the motor is in full speed all the time or get a new controller.
ouch, that'll hurt if you're gonna send it for repair.......:eek:
lawrence cope
09-02-09, 19:07
How have you got the box open as i have one that i brought second hand knowing it was stuck on the lowest speed setting as it got wet! If you can let me know how you get on with it or if stuart could tell us if they can be replaced!
How have you got the box open as i have one that i brought second hand knowing it was stuck on the lowest speed setting as it got wet! If you can let me know how you get on with it or if stuart could tell us if they can be replaced!
Hammer chisel......:whistling::laugh: (sorry mate, couldn't resist!:))
On my one I removed the screw under the red dot then put a flat screwdriver under one of the lips on the side and tapped the lid off. Its a little tight as its got a seal around it!
You can then undo the two screws inside and unplug the box, you may need to wiggle out the thermal on the yellow wires - it is just tucked in the motor housing.
You may find the plastic has broken on the speed control knob...
How have you got the box open as i have one that i brought second hand knowing it was stuck on the lowest speed setting as it got wet! If you can let me know how you get on with it or if stuart could tell us if they can be replaced!
Once you get the box off you may find its just the lever that is broken! Mine is...
Get a pair of pliers and twist the knob around.
If you want to fault find then the plate with the variable resistor on can be removed. Put a multimeter across terminals 2+3 to measure resistance. 0 for full speed! ;p
lawrence cope
09-02-09, 20:57
Ok just taken the box off and the next layer and its soaked! As i said i knew it had been underwater when i brought it, theres salt creep everywhere and some terminals look abit dirty so im going to give it all a good clean up and see how it goes from there. My switch works fine so i know its not that!
Does the switch actually twist the white pin? On mine it looks like the varistor seized and the switch was forced breaking its insides, so the switch works but does not engage the pin!
You can un-clip the plate the variable resistor sits on so it is easier to get too!
lawrence cope
09-02-09, 21:12
Yep mine does all twist. 1st thing i checked. I have got it do i can see the edge of the windings under the electrics and its damp in there aswell so im guessing the windings could well be knackered! Also some of the wires that conect to the terminals look copper while others look tarnished so it could well nee a rebuild on mine:(
First thing I would do is put a multimeter between pins 2 and 3 and check the resistance is 0 ohms. If there is corrosion it could bring up the resistance and slow the motor.
I would have thought if there was water in the windings the fuse would have popped? But well worth trying to dry it out!. On motors the windings are sealed so this does make them semi waterproof :-]
lawrence cope
09-02-09, 21:53
Cheers ill leave it open to dry dry it out and will try get hold of a multimeter to see what readings i get. If i cant get to the bottom of it ill be off to a pump repair place near me to get it sorted! Thanks for all the advice so far. I have been tempted to do this for months but seeing your thread spured me on:o
No worries, you can pick up new motors for about £20 on ebay if you need too!
lawrence cope
09-02-09, 22:06
I may have to contact you in future about that then:laugh: I have also thought about just getting a new pump but getting the one that i believe deltec rebrand, i believe its a grundfos central heating pump!
Yes that is the one I mean! :]
lawrence cope
10-02-09, 17:11
Any idea what model of grundfos pumps it is? I have had a look but cant find the hlp style anywhere!
I *think* its a grundfos 15-60
HTH
lawrence cope
10-02-09, 17:20
Looking at that it has the inlet and outlet on the top and bottom. Not front and top. Oh well im still waiting for mine to dry out and im taking it to a friend to test the connections!
Stuart Bertram
10-02-09, 18:46
Guys
The Deltec pump does use some Grundphos parts but also has a lot of specially made in plastic for saltwater use. I think you will find that the standard pumps have a lot of brass which contains copper which is not so invert friendly
Stuart
One thing to remember with these pumps is the little plastic tray that is placed over the speed selector is the only thing that keeps that part water tight, without that any spillage will as you guys have found make a right mess so if yours is working fine make sure you have the plastic cover on top of your speed controller so this problem does not happen.
15-60 Grundfos pump head if what you want and they are fine with salt water plastic impeller ceramic shaft stainless steal housing :D
I had one running for two years with a aqua turn wet end
There's a fresh water and salt water conversion kit for the Grundphos pump online, and the feet that deltec use are available through spme of the german aquarist online shops, plus if you put a red dot on it after you could pass it as a oe model ;)
like the re-branded bresslein stuff that deltec sell. It's all out there, you just gotta find it :) hehe
15-60 Grundfos pump head if what you want and they are fine with salt water plastic impeller ceramic shaft stainless steal housing :D
I had one running for two years with a aqua turn wet end
you beat me! :laugh:
lawrence cope
10-02-09, 18:59
One thing to remember with these pumps is the little plastic tray that is placed over the speed selector is the only thing that keeps that part water tight, without that any spillage will as you guys have found make a right mess so if yours is working fine make sure you have the plastic cover on top of your speed controller so this problem does not happen.
Mine was on the floor of a cabinet and it was designed to hold water if there was a flood! The plactic cover is in place but that doesnt help when the pump was emersed in water! Basicly my pump has taken a dunking and only works on the lowest speed setting which is why i only paid £50 for it:D
lawrence cope
10-02-09, 19:00
There's a fresh water and salt water conversion kit for the Grundphos pump online, and the feet that deltec use are available through spme of the german aquarist online shops, plus if you put a red dot on it after you could pass it as a oe model ;)
like the re-branded bresslein stuff that deltec sell. It's all out there, you just gotta find it :) hehe
I spoke to you in cambridge coral tech about this pump! Im having a go at repairing it myself before i hand it over to someone to be repaired! Im just not going to get to involved with it though! Id rather not screw it up totally!
Mine was on the floor of a cabinet and it was designed to hold water if there was a flood! The plactic cover is in place but that doesnt help when the pump was emersed in water! Basicly my pump has taken a dunking and only works on the lowest speed setting which is why i only paid £50 for it:D
OK i was giving a heads up for everyone to be honest, you may find the inner workings will all be seized up with salt, you may have to replace or send it off for repair.
lawrence cope
10-02-09, 19:04
It works but i believe it could be the windings. If it does go for repair ill speak to a company that services all types of pumps near my work! Im sure they will be able to do it!
I spoke to you in cambridge coral tech about this pump! Im having a go at repairing it myself before i hand it over to someone to be repaired! Im just not going to get to involved with it though! Id rather not screw it up totally!
Genuinely, if this was my pump.....i'd call stuart, arrange a reconditioning at the factory. and ask stuart if you can mail it to deltec direct yourself rather than D&D doing it(save youself some cash!, box it VERY VERY well!
Usually 90% of the time they end up returning the pump to you as a complete refubish, so you'll be getting a new pump back! (with the lod feet etc attached)
make sure those feet a surrounded in bubble wrap! inches of it!
you can fix it yourself, but as i'm sure i said before, a full service isn't too bad (cheaper than a new pump......only just :whistling:)
:wave:
Got any links for this conversion kit?
I could not find the company... koi something?
There's a fresh water and salt water conversion kit for the Grundphos pump online, and the feet that deltec use are available through spme of the german aquarist online shops, plus if you put a red dot on it after you could pass it as a oe model ;)
like the re-branded bresslein stuff that deltec sell. It's all out there, you just gotta find it :) hehe
Genuinely, if this was my pump.....i'd call stuart, arrange a reconditioning at the factory. and ask stuart if you can mail it to deltec direct yourself rather than D&D doing it(save youself some cash!, box it VERY VERY well!
Usually 90% of the time they end up returning the pump to you as a complete refubish, so you'll be getting a new pump back! (with the lod feet etc attached)
make sure those feet a surrounded in bubble wrap! inches of it!
you can fix it yourself, but as i'm sure i said before, a full service isn't too bad (cheaper than a new pump......only just :whistling:)
:wave:
Think you may also get some sort of guarantee with it maybe its 3 months but do not quote me on that as i can not 100% remember, mine cost about 180 pounds to be repaired last time.
lawrence cope
10-02-09, 19:58
Thats £180 i just dont have! If i cant repair it myself then for now ill run it as it is because on my current tank my wier wont take much more than the 1st setting. Ill think about it when it comes to upgrading to a better designed tank!
I will repair your pump for £180 ;p
Might even clean it too!
lawrence cope
10-02-09, 22:44
£180 does seem abit much to me for a pump rebuild which is why i would use a local company who im sure could fix it!
£180 does seem abit much to me for a pump rebuild which is why i would use a local company who im sure could fix it!
If you find the local company does get it working for cheaper i am sure there will be others who are interested
lawrence cope
10-02-09, 23:07
Well its a local place to me that my work use to repair their pumps. They have done some very small motors up to some that need an engine hoist to lift so if i cant get it working ill have a word with them and see if they can do it!
Oh well, the pump finally went bang today!. My RCD is tripping when it is plugged in. :-(
Looks like the previous salt water spillage has finally taken its toll on the windings.
Does anyone know how to dismantle the pump? I have it in bits but cannot get the impeller off. I'm guessing a special tool is required?
Looks like I will be phoning deltec tomorrow to see if I can get it repaired. Gutted :/
Not much help to you but we have the address to send to direct within this FAQ on the site.
http://www.theaquariumsolution.com/refurbishing-hlp-pump
Hi Tony, Thanks for the reply but that is the email I sent to you the other day ;p
I'm just weighing up my options at the moment :-/
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