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TROUBLESHOOTING GUIDE
Pump does not start
•
Poor electrical connection: Plug the power plug firmly into AC outlet.
•
Power cord damage: Contact ALITA for repair service.
•
GFCI tripped: Check for moisture on plug or water inside the pump.
Replace faulty GFCI and/or try another GFCI protected AC outlet.
There exist a high humming or hissing noise
•
High backpressure: Reduce pressure load or bleed off excess air flow.
•
Poor air distribution lines: Re-configure or resize pipe lines and fittings,
use sound dampening materials, make firm and stable connections.
Pump stops intermittently
•
High operating temperature: Follow Proper Ventilation instructions on
this manual. Allow thermal protection circuit to reset after cooling.
Reduced flow rate or performance (after a period of usage)
•
Faulty air distribution medium: Replace clogged or damaged air line,
clean air control valves or release bends in flexible tubing.
•
Pump intake blocked: Remove blockage from pump intake.
•
Fouled air diffusers: Replace or clean air diffuser thoroughly.
•
Worn diaphragms: Replace aged or damaged diaphragm modules.
See Maintenance Instructions.
Pump stops and will not start (after a period of usage)
•
Diaphragm failure, magnetic rod adhere to electromagnet: Open pump
for inspection. Check for any damage to magnetic rod. Contact ALITA
for assistance and procure replacement parts.
•
For models AL-100~400 and certain models of AL-60/80
Protective Switch activated: Procure Diaphragm Replacement Kit for
maintenance. Follow instructions #1, #9 and #10 on Diaphragm Module
Replacement Procedure to reset Protective Switch.
Pump produces an abnormal noise (after a period of usage)
•
Diaphragm failure: Stop pump operation immediately. Open pump for
inspection. Check for any damage to magnetic rod. Contact ALITA for
assistance and procure replacement parts.
If none of the prescribed solution can help you resolve your pump problem,
contact ALITA for repair service instructions. DO NOT ATTEMPT to repair the
pump on your own.
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