Troubleshooting; Disposal - Grundfos UP-ZV Notice D'installation Et De Fonctionnement

Grundfos.bk Page 14 Wednesday, June 2, 2010 1:16 PM

10. Troubleshooting

Problem
Noisy valve
Valve does not open
Valves does not close
or seal off
No demand for heat

11. Disposal

This product or parts of it must be
disposed of in an environmentally
sound way:
1. Use the public or private waste
collection service.
2. If this is not possible, contact
the nearest Grundfos company
or service workshop.
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Check for:
Excessive flow velocity
Air in liquid
Liquid over 240 °F (115 °C)
Check proper flow direction
Check voltage
Check wiring
Check voltage
ΔP too high
Debris in valve chamber
Damaged paddle
Check that valve is open
Check continuity of end switch when valve is open
Subject to alterations.