Danfoss VLT Midi Drive FC 280, Installation Instructions

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The instructions provide information about fan replacement in
the VLT
®
Midi Drive FC 280.
Only Danfoss authorized, qualified personnel is allowed to
repair this equipment. The personnel must be familiar with the
instructions and safety measures described in the
VLT
®
Midi Drive FC 280 Service Guide .
Items Supplied
Items supplied depend on ordered code number and
enclosure type of the frequency converter.
Ordering Numbers
Enclosure Power range [kW (hp)] Ordering number
K1 0.37–2.2 (0.5–3.0) 132B0351
K2 3.0–5.5 (4.0–7.5) 132B0352
K3 7.5 (10) 132B0353
K4 11–15 (15–20) 132B0371
K5 18.5–22 (25–30) 132B0372
Tools Required
•
Screwdrivers:
- Flat-edged
- T10
Tightening torques
•
0.5–0.7 Nm (4.4–6.2 in-lb)
Safety Instructions
WARNING
DISCHARGE TIME
The frequency converter contains DC-link capacitors, which
can remain charged even when the frequency converter is
not powered. High voltage can be present even when the
warning LED indicator lights are off. Failure to wait the
specified time after power has been removed before
performing service or repair work can result in death or
serious injury.
•
Stop the motor.
•
Disconnect AC mains and remote DC-link supplies,
including battery back-ups, UPS, and DC-link
connections to other frequency converters.
•
Disconnect or lock PM motor.
•
Wait for the capacitors to discharge fully. The
minimum waiting time is specified in
Table 1.1
.
•
Before performing any service or repair work, use
an appropriate voltage measuring device to make
sure that the capacitors are fully discharged.
Voltage [V]
Power range
[kW (hp)]
Minimum waiting time
(minutes)
200–240 0.37–3.7 (0.5–5) 4
380–480
0.37–7.5 (0.5–10) 4
11–22 (15–30) 15
Table 1.1 Discharge Time
Installation Instructions
Fan Replacement
VLT
®
Midi Drive FC 280
Danfoss A/S © 11/2015 All rights reserved. MI07D102