help with 1s not pumping

[RichardB]

I bought a 2nd hand 1s. Ive plumbed it all in however the pump isnt pumping. Ive removed one of the connectors from the pressure switch and the pump make a loud vibrating noise. But no water comes out. I have attached the hose to my washer bottle and I have sucked the water throught as far as the pump.

Could it be having a problem pulling it through the washer bottle pump?

[keithmac]

They can be a bit hard to prime, take the outlet pipe off the pump (that goes to the jet) and it should make it a lot easier to prime up. If you`re not using a priming pump the resovoir needs to be higher than the pump and the delivery line needs to drop down so gravity can supply the pump, less chance of an airlock.

[Richard L]

When the pump is dry inside, it won't prime.

You need to "force" some water into the pump with a 20cc syringe, once wet, it should work. Please let us know how you got on.

[RichardB]

that worked a treat - thanks. What I actually did was use a washingup liquid bottle and squirted water in both ends of the pump.

I noticed all the jets are different colours, can you tell me what size each colour is please.

[Richard L]

You can identify all the colour here.

The latest 0.7mm is red or Purple.

http://www.aquamist.co.uk/sl/plist/pic2/jets/jets.html (slightly out of date).