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Installation Instructions
Top Fan Replacement for E3h/E4h Drives
Description
The top fan assembly in E3h and E4h drives consists of 2 fans
within a single fan housing. The top fan replacement kit
contains all parts required to replace 1 fan in the top fan
assembly.
Part number
Kit description
176F3176
Top fan for IP20 enclosure
Table 1.1 Part Number for the Top Fan Kit
Items Supplied
The door fan replacement kit contains the following:
•
1 fan
•
Installation instructions
Safety Instructions
Only qualified, Danfoss authorized personnel are allowed to
install the parts described in these installation instructions.
Disassembly and reassembly of the drive must be done in
accordance with the corresponding service manual.
WARNING
ELECTRICAL SHOCK HAZARD
®
VLT
series drives contain dangerous voltages when
connected to mains voltage. Improper installation, and
installing or servicing with power connected, can cause
death, serious injury, or equipment failure.
To avoid death, serious injury, or equipment failure:
•
Only use qualified electricians for the installation.
•
Disconnect the drive from all power sources before
installation or service.
•
Treat the drive as live whenever the mains voltage
is connected.
•
Follow the guidelines in these instructions and local
electrical safety codes.
DISCHARGE TIME
The drive contains DC-link capacitors, which can remain
charged even when the drive is not powered. High voltage
can be present even when the warning LED indicator lights
are off. Failure to wait 40 minutes after power has been
removed before performing service or repair work can result
in death or serious injury.
•
•
•
•
•
Danfoss A/S © 06/2017 All rights reserved.
WARNING
Stop the motor.
Disconnect AC mains and remote DC-link power
supplies, including battery back-ups, UPS, and DC-
link connections to other drives.
Disconnect or lock PM motor.
Wait 40 minutes for capacitors to discharge fully.
Before performing any service or repair work, use
an appropriate voltage measuring device to make
sure that the capacitors are fully discharged.
MI35N102
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Summary of Contents for Danfoss E3h
- Page 1 Description WARNING DISCHARGE TIME The top fan assembly in E3h and E4h drives consists of 2 fans The drive contains DC-link capacitors, which can remain within a single fan housing. The top fan replacement kit contains all parts required to replace 1 fan in the top fan charged even when the drive is not powered.
- Page 2 Installation Instructions Top Fan Replacement for E3h/E4h Drives Installation Instructions Removing the Top Fan To remove and replace the top fan, use the following procedures. Refer to Illustration 1.1. Remove 2 screws (T25) from the fan housing. Slide the fan housing and fans out from under the retaining clips.
- Page 3 Installation Instructions Top Fan Replacement for E3h/E4h Drives MI35N102 Danfoss A/S © 06/2017 All rights reserved.
- Page 4 Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed. All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S.