Fault Finding; Disposal - Grundfos RSL Serie Manual De Instalación Y Operación

6. Fault finding

Fault
Too low flow or no flow
Low-level or empty indication does not work

7. Disposal

This product or parts of it must be disposed of in an
environmentally sound way. Use appropriate waste collection
services. If this is not possible, contact the nearest Grundfos
company or service workshop.
14
Possible cause
Strainer is soiled.
Pump is switched off.
Suction line is installed incorrectly.
Internal diameter of suction line is too small.
Suction line is not tight.
Signal line is not connected to the pump.
Contact type is set incorrectly.
Reed switch is defective.
Subject to alterations.
Possible remedy
Clean the strainer.
Switch on the pump.
Check the suction line and connection.
Use suction line with larger internal
diameter.
Check the line and connections.
Connect the signal line to the pump.
Adapt setting of contact type
(see section 4.2.3 Changing the contact
type).
Replace the foot valve or suction lance.