ALITA AL Series Handbuch für Betrieb und Wartung - Seite 5
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Diaphragm module replacement is recommended for every 24 months of continuous operation or after 20,000 hours of use.
If the pump makes an abnormal noise or if the discharged air volume and pressure is extremely low, turn off the air pump
immediately. This may indicate a worn or damaged diaphragm, which needs to be replaced. Diaphragm Replacement Kit
(Part No.: DRK615) can be ordered from Alita Industries or from your local Alita representative.
Diaphragm Module Replacement Procedure
For repair service contact Alita Industries for instructions and to receive an authorization number prior to sending the pump.
Alita Industries will not be responsible for any lost or misdirected package.
1. Set pump upside-down and
remove all corner screws (4X)
with socket wrench or screw
driver. Return pump to upright
position and lift away upper
pump housing.
2. Slide down the silicone band
and detach the rubber L-tube
from each Diaphragm Housing
with care. Do not damage the
L-tube.
3. Select a Diaphragm Housing on the pump, remove its
4 corner screws then pull away the housing. Proceed
to remove the Hex Nut and Washer from center of the
Diaphragm then slide the entire Diaphragm Block
away from Magnetic Rod and Core Frame.
4. Select a new Diaphragm Block assembly from the DRK, ensure the rim of new
Diaphragm is firmly embedded into the groove of Diaphragm Frame. Then match new
Diaphragm Block to the Core Frame and secure to the Magnetic Rod with Washer and
Hex Nut.
5. OPTIONAL: Apply 1 or 2 drops of threadlocker (use only removable grade) over the
hex nut and the exposed thread of magnetic rod screw.
6. Install new Diaphragm Housing and secure with 4 corner screws.
7. Attach rubber L-tube to the Diaphragm Housing and secure with silicone band.
8. Repeat procedure #3 through #7 to replace old diaphragm module on the other side of
pump.
9. Inspect the position of Magnetic Rod from the top. Confirm that the Magnetic Rod is
centered between and NOT in contact with the two Electromagnets.
10. Install upper pump housing, and secure to pump firmly with all 4 corner screws.
Magnetic Rod
L-Tube
Diaphragm Housing
Electromagnet