Wilo EMU FA Instrucciones De Instalación Y Funcionamiento página 62

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Faults, causes and remedies
⇒ Vent the pipe system.
⇒ If air cushions occur frequently: Locate and prevent the air intake, if required
install ventilation systems at specified locations.
6. Pump pumping against excessive pressure.
⇒ Open all gate valves on the pressure side completely.
⇒ Check the impeller shape, use other impeller shapes if required. Contact cus-
tomer service.
7. Signs of wear on the hydraulics.
⇒ Have the components (impeller, suction port, pump housing) checked and re-
placed by customer service.
8. Pipe system on the pressure side or pressure hose clogged.
⇒ Remove clogging and replace the damaged components if necessary.
9. Strongly gassing fluid.
⇒ Contact customer service.
10.There are only two phases at the connection.
⇒ Have the connection checked and corrected by a qualified electrician.
11.Excessive decrease in the fill level during operation.
⇒ Check supply/capacity of the system.
⇒ Have the switching points of the level control checked and adjusted if neces-
sary.
Fault: The pump does not run smoothly and is noisy
1. Improper duty point.
⇒ Check the pump configuration and the duty point, contact customer service.
2. Hydraulics jammed.
⇒ Clean the hydraulics.
3. Strongly gassing fluid.
⇒ Contact customer service.
4. There are only two phases at the connection.
⇒ Have the connection checked and corrected by a qualified electrician.
5. Incorrect direction of rotation.
⇒ Have the connection corrected by a qualified electrician.
6. Signs of wear on the hydraulics.
⇒ Have the components (impeller, suction port, pump housing) checked and re-
placed by customer service.
7. Motor bearings have worn.
⇒ Inform customer service; send the pump back to the factory for overhauling.
8. Pump is installed under tension.
⇒ Check installation, install rubber compensators if necessary.
Fault: Sealing chamber control reports fault or switches the pump off
1. Condensation water build-up due to extended storage or high temperature fluctu-
ations.
⇒ Operate the pump for a short period (max. 5 min.) without pencil electrode.
2. Increased leakage when running in new mechanical seals.
⇒ Change the oil.
3. Pencil electrode cable is defective.
⇒ Replace the pencil electrode.
4. Mechanical seal is defective.
⇒ Inform customer service.
WILO SE 2018-02

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