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Warning -

Failure to carry out routine maintenance leaving the

pump under reduced or no flow conditions for long periods 
(e.g. blocked pre-filter) will result in a shorter pump life and will
invalidate the guarantee.

Blagdon Amphibious pumps are centrifugal pumps with a magnetic impeller
movement driven by a watertight asynchronous motor. They require minimum
cleaning, only periodic cleaning of the pre-filter and impeller is necessary.

Cleaner

The use of Blagdon Pond Pump Cleaner will give improved performance and
pump life by removing built-up lime scale and waste. Use before dismantling
for easier, cleaner handling.

Tip: 

New ponds and ponds in hard water areas will cause lime scale to build-up more

quickly. Dip your pump more frequently with Blagdon Pond Pump Cleaner to maintain
optimum performance.

MAINTENANCE & CLEANING

8

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INSTALLATION

Water Feature / Filter / Waterfall

Install as for Fountain. Depending on water feature to be supplied, your Amphibious
pump can be used with the dual control T-piece 1" 1/4" 1/2" hose fitting (see
"Adjusting dual control T-piece" diagram). Hose clips should be used to secure hose.

Tip: 

The larger 1” hose fitting will give maximum pump flow performance. If you do not

require a fountain a significant increase in performance will be gained by connecting the
hose fitting directly to the pump outlet flange.

• Ensure pipe work is not blocked, leaking or is laid so that it gets crushed 

or kinked.

• Keep the height that water is to be pumped from the water surface (called 

Head) to a minimum. The higher the head the lower the flow rate and the
more wear on the pump.

• Use the largest diameter, smoothest bore pond hose over the shortest

distance and keep hose fittings to a minimum. This removes frictional loss 
of flow and so increases pump flow rates.

Also see the explanatory diagram on the top face of your Amphibious pump carton. 

Amphibious Pump Leaflet 2.qxd  30/3/06  13:33  Page 10

Summary of Contents for AMPHIBIOUS A2500

Page 1: ...THE POND MASTERS GUIDE TO AMPHIBIOUS A2500 A3000 A3500 A4000 Amphibious Pump Leaflet 2 qxd 30 3 06 13 32 Page 1...

Page 2: ...s waterfalls filters and water features The unique disc shaped remote magnet drive impeller and ceramic bearings delivers outstanding reliability Manufactured in the UK since 1981 IMPORTANT Please att...

Page 3: ...stalling the pump 7 8 Maintenance and cleaning 8 9 10 11 Cleaning 9 Routine maintenance 9 Monthly maintenance 9 10 11 Step by step guides 9 10 11 Annual maintenance 11 Winter storage 11 Troubleshootin...

Page 4: ...p outlet flange 1014786 2 Handle N A 3 Pre filtration screen N A 4 Pre filter lid 1014861 5 Pre filter lock 1014878 6 Pre filter base 1014885 7 Cable guide N A 8 Base foot N A 9 Motor location N A 10...

Page 5: ...1018708 4 Impeller vanes N A 5 Rotor 2500 3000 3500 1019378 Rotor 4000 1019385 6 Radial groove N A 7 Ceramic shaft 1019552 8 Ceramic thrust washer 9 Centre bolt washer 10 Centre bolt 11 Pump motor N...

Page 6: ...1014816 5 20cm Extension pipe 1014823 6 Daisy jet 1014748 7 Triple jet 8 Foam jet 1014724 9 Bell jet 1014731 10 Tulip jet 11 Jet housing N A 12 12 5mm 1 2 Hose fitting 1014755 13 18 75mm 3 4 Hose fit...

Page 7: ...28 gal hr 607 gal hr 726 gal hr 792 gal hr Maximum Lift 2 62m 3 25m 3 6m 4 01m 8 7 10 8 11 10 13 2 CC _ CC _ CC _ A2500 A3000 A3500 A4000 300 325 350 375 275 720 840 250 960 1080 225 1200 60 300 480 1...

Page 8: ...the supply circuit A means of disconnection from the supply having a contact separation of at least 3mm in all poles must be incorporated in the fixed wiring For permanent installations to the mains...

Page 9: ...feature fitted does not empty water out of pond water feature In windy conditions it may be necessary to shut off or reduce the height of your fountain display to prevent water loss Also see the expla...

Page 10: ...ure Filter Waterfall Install as for Fountain Depending on water feature to be supplied your Amphibious pump can be used with the dual control T piece 1 1 4 1 2 hose fitting see Adjusting dual control...

Page 11: ...aintenance Carry out routine maintenance when pump flow is visibly reduced 1 Switch off electricity to the pump and all other electrical pond equipment 2 Remove pump from pond do not use the cable to...

Page 12: ...ng the copper centre bolt washer is fitted between the head of the bolt and ceramic thrust washer Carefully tighten the LEFT HAND THREADED BOLT to a maximum torque of 2Nm The Impeller assembly should...

Page 13: ...ble entry point and the cable if there is any sign of damage the pump should be discarded and safely disposed of Winter Storage The pump can be run in the pond during the winter but care should be tak...

Page 14: ...equire a fountain a significant increase in performance will be gained by connecting the hose fitting directly to the pump outlet flange Poor fountain performance 1 Reduced height 2 Jets blocked Clean...

Page 15: ...of purchase under normal usage The guarantee DOES NOT APPLY in case of improper use negligence lack of maintenance or accidental damage either to the pump or to the impeller or impeller shaft If the p...

Page 16: ...lue for all their customers This product excellence is demonstrated by Blagdon s award winning range of water gardening equipment As a result Blagdon s reputation for quality is unrivalled amongst exp...

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