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SERVICE INSTRUCTIONS
*ET250 - ET500 DOUBLE SERIES (Same procedure for alarm equivalent models)
STEP 1
To start, unplug the pump from the mains.
Unscrew and remove the cover from the air
pump.
STEP 4
Unscrew the chamber block and pull it apart.
STEP 7
Cut the excess rubber off from the valves and
discard.
CONTACT US:
+44 (0)1932 355277
STEP 2
Unscrew the chamber cover at one end of the
pump. Separate the chamber cover at the seam
to expose the screw holding the white round
plastic diaphragm depressor in place.
STEP 5
Remove the valves from the chamber block,
take note of the valve formation.
STEP 8
Screw the chamber block back together
ensuring the rubber seal between them lined up
properly. Repeat this process on the remaining
3 chamber blocks.
INFO@CHARLESAUSTEN.COM
STEP 3
Unclip the diaphragm face to expose the
diaphragm and chamber block.
STEP 6
Pull the new valves through, you should hear a
'snap' sound once secured in place.
STEP 9
Undo the two bolt from the diaphragm.
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Summary of Contents for Charles Austen ET250 DOUBLE Series
- Page 1 SERVICE INSTRUCTIONS *ET250 - ET500 DOUBLE SERIES (Same procedure for alarm equivalent models) STEP 1 STEP 2 STEP 3 To start, unplug the pump from the mains. Unscrew the chamber cover at one end of the Unclip the diaphragm face to expose the Unscrew and remove the cover from the air pump.
- Page 2 SERVICE INSTRUCTIONS *ET250 - ET500 DOUBLE SERIES (Same procedure for alarm equivalent models) STEP 10 STEP 11 STEP 12 Remove the diaphragm frame and peel off the Replace the worn diaphragm with the new one Remove the worn magnet and replace with the worn diaphragm.
- Page 3 The wear and tear parts are outside the two year warranty but are covered by a year’s warranty providing they have been used correctly and not subjected to back pressure or water damage. Please contact Charles Austen Pumps on +44 (0)1932 355277 to purchase a service kit or for further help with servicing your pump.
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