4. COMMISSIONING
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4.3 Plug fan
To commission the plug fans for the first time, the following actions have to be taken:
•
Check that the four measuring probes below the pressure transmitter are blanked.
•
Check if the transportation brackets have been removed.
•
Check by hand if the fan wheel is turning freely.
•
Check that all dampers in the duct system are open.
•
Check if the duct system is clean and not blocked by any parts.
•
Start up the fan for a few seconds and check if the fan wheel turns in the right
direction (see arrow on fan casing). If this is not the case stop the unit, switch off the
main current and change two phases of the fan on the terminal strip.
4.3.1 Frequency converter setup
All frequency converter parameters are set by the factory. For a list of parameters please
refer to 8. Appendix. For change of settings of the most important parameters, please refer
to 4.3.1.2 Quick Menu. For change of settings of any other parameter, please refer to the
separate Danfoss VLT 2800 manual in the quick menu.
The control panel on the front of the frequency converter is used to set up the frequency
converter. All displays of data are in the form of a six-digit LED display (1) capable of
showing one item of operating data continuously during normal operation (see 4.3.1.1). As a
supplement to the display, there are three indicator lamps (2) for indication of mains
connection (ON), warning (WARNING) and alarm (ALARM) and six control keys (3). The
control keys have the following functions.
[QUICK MENU]
allows access to the parameters used for the Quick menu
[CHANGE DATA]
is used for changing a setting. The [CHANGE DATA] key is also used for
confirming a change of parameter settings.
[+] / [-]
are used for selecting parameters and for changing parameter values. These keys
are also used in Display mode for selecting the display of an operating value.
[QUICK MENU] + [+]
keys must be pressed at the same time to give access to all
parameters. Please refer to the separate Danfoss VLT 2800 manual.
[STOP/RESET]
is used for stopping the connected motor or for resetting the frequency
converter after a trip.
In Display mode, the display will flash if the stop function is activated.
[START]
is used for starting the frequency converter. It is always active, but the [START]
key cannot override a stop command.
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