Troubleshooting; Troubleshooting In General - Danfoss VVX-I Operating Manual

Operating Guide Termix VVX-I with complete insulation

7.0 Troubleshooting

7.1 Troubleshooting in general

In the event of operating disturbances, the following basic features
should be checked before carrying out actual troubleshooting:
• the substation is connected to electricity,
• the strainer on the DH supply pipe is clean,
• the supply temperature of the DH is at the normal level
(summer, at least 60 °C - winter, at least 70 °C),
• the differential pressure is equal to or higher than the normal
(local) differential pressure in the DH network – if in doubt, ask
the DH plant supervisor,
• pressure on the system - check the HE pressure gauge.
22 | © Danfoss | 2023.10
Authorized personnel only
Assembly, start-up and maintenance work must be performed by
qualified and authorized personnel only.
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