The pneumatic push button is used to start the operation of the pump where insufficient flow of water is available to move the built in flow switches (negative head).
To activate the pump, simply turn your shower mixer to on, and push the button on the pneumatic switch. The pump will start, water will flow and activate the pump flow switches and the pump will continue operating automatically. There is no need to keep holding your finger on the button. To stop the pump, turn the mixer to off, this will stop the water flow and hence the pump.


Site the pneumatic switch on a wall or surface as near the shower installation as possible and run the plastic air tube to the area of the control lid on top of the pump please ensure there are no kinks in the air tube line.
Connect the air tube to the pneumatic push button taking care not to damage the moulding. Avoid at all times the air tube touching any hot water pipes as this will have an adverse effect on the performance of the negative head switch.
Remove the existing control box cover from the pump. Disconnect the mains lead and re-route the lead through the cable gland on the end of the new control box and rewire to the connector block taking care to connect the cable to the correct terminals.
Connect the two new wires in the terminal box (on the air switch) to the two N.H terminals on the printed circuit board (connector orientation not crucial). Carefully fit the new lid using existing screws.
Cut off excess plastic air tube and connect to the pressure switch on the new lid.

The 7-metre of air tubing supplied should be suitable for most applications. However should a longer length of air tubing be required call the HELPLINE on 0845 2000 914.
Grundfos Warranty
Grundfos offer a full range of pump solutions across all business areas.
Grundfos Warranty: 0845 200 0912
Grundfos Shower Pumps
Standard Guarantee
Grundfos Amazon Shower Pumps - 5 Year Guarantee
- Brass shower pumps we ask that the Installer or Consumer contact the technical team in all occasions
- The team will try and identify the fault and may ask them to carry out some minor test on the pump to help diagnose the issue
- At this point they will either arrange a visit to the pump (normal T&C’s apply) or possibly tell them to take it back to exchange.
Grundfos Nile Shower Pumps - 2 Year Guarantee
Grundfos Niagara Shower Pumps - 2 Year Guarantee
STR2 and SSR range
- Two Year warranty from date of purchase or from date on top of terminal box.
- Installer or Consumer can take a faulty shower pump back to merchant from which they purchased and exchange with a new model. So long as it is in warranty period.
- We would encourage a call to the technical team who may be able to identify the problem and resolve it over the phone or tell them they need to take back to the merchant to exchange.
If you require further clarification please contact the Grundfos Team for assistance on 0845 200 0912
Grundfos Sololift Macerators
2 Year Guarantee
Grundfos Circulating Pumps
2 Year Guarantee
What if my item is faulty?
Should you encounter a fault with your Grundfos product within the guarantee period please contact Grundfos Directly on 0845 200 0912.
For further information please check the
Grundfos Website
Delivery Details
Buyaparcel offer delivery throughout the United Kingdom, including Northern Ireland, Scottish Highlands and other Islands of the UK. In addition we can now also deliver through Europe.
UK Delivery Prices
£2.95 - Royal Mail Second Class (2-5 Days Approx - selected products only)
£3.95 - Standard UK Delivery (2-3 Days Approx)
£5.95 - Next Day UK Delivery (Orders placed before 3.30pm Monday - Friday)
£8.95 - Saturday Delivery (Orders placed before 3.30pm Friday)
£36.00 - Pallet Delivery (2-3 Days Approx - selected products only)
International Delivery Prices
In addition we now deliver through Europe on a 48 Hour Delivery Service as Standard
Zone 1 – £9.99
Belgium, Germany, Luxembourg, France, Netherlands, Rep Ireland.
Zone 2- £14.99
Austria, Denmark, Czech Republic, Poland, Lithuania, Hungary.
Zone 3 – £19.99
Estonia, Spain, Sweden, Italy, Portugal, Latvia.
Zone 4 – £29.99
Bulgaria, Finland, Romania.
Zone 5 – £49.99
Bosnia, Croatia, Switzerland.
Zone 6 – £59.99
Norway, Serbia, Iceland.
Choose a Delivery Date to Suit You
You also now have the facility to choose a day you wish to have your order delivered on if your order is being delivered via courier or pallet. This can be done at the checkout stage where you will be shown a calendar if you select the book in option. You will have the option of booking in your delivery for a day that is convenient for you. Should you require the order the following day please select the next day option.
Is My Item Available for Next Day Delivery?
If your item is stocked in our immediate picking location it will available for you to choose a next day delivery. This will be highlighted by a green tick and a 1 day dispatch time on the item information.
You will have the option to choose this service if you are purchasing your item for delivery to mainland UK.
What courier will my item be delivered with?
If your item is being delivered in the UK or Ireland, it will be delivered by UK Mail or Royal Mail, with the exception of pallet items. The courier type is displayed on each item but will be confirmed at the checkout stage when you have completed your shopping.
If you are an international customer, your goods will initially be sent via UK Mail, and then exported to either Eurodis or DHL. The appropriate tracking can be provided when necessary.
Details of each courier service we offer are detailed in our
Delivery Guide.
How do I track my delivery?
To track your order online, go to 'Your Account' and click on 'Purchase History' for an update on your order.
Our team work extremely hard to get your parcels to your door in the shortest possible time but please note that we recommend you do not book a plumber etc until you have received and checked your goods.
Please note:
- Delivery addresses cannot be changed once the order is placed except in the case of an error, which we will do our best to change, but orders are often shipped quickly after being processed.
- The couriers we use do not deliver to PO boxes or building sites.