Kit Contents
•
Ductwork components
•
Mounting hardware
•
Gasket material
•
175R5631 View of Ductwork components, D3 and D4 frames
•
175R1037 View of Ductwork components, E2 frame
•
175R5639 Template for drive location in “D” frames
Required Tools
•
Metric Socket Set, 7-19mm
•
Socket Extensions
•
Torx Driver Set T10-T40
•
Torque Wrench 6-50 in-lbs (.7-6 N-M)
Torque Requirements
1. 10 mm, M5 Nuts torque to 20 in-lbs (2.3 N-M)
2. T25 Torx screws torque to 20 in-lbs (2.3 N-M)
Instruction No: 175R5640 V3
Aug 13, 2008
Page 2
Notes:
1. The photos in this instruction are based on a D4 Frame installation. D3 and E2 frame
drives use parts similar to those in the photos however they are sized appropriately for
those drives.
2. A doorfan(s) is required on the enclosure to remove the heat losses not contained in the
backchannel of the drive and any additional losses generated from other components in-
stalled inside the enclosure. The total required air flow must be calculated so that the ap-
propriate fans can be selected. Some enclosure manufacturers offer software for perform-
ing the calculations (i.e. Rittal Therm software).
If the VLT is the only heat generating component in the enclosure, the minimum airflow re-
quired at an ambient temperature of 45°C for the D3 and D4 frame drives is 391 m
3
/h (230
cfm). The minimum airflow required at an ambient temperature of 45°C for the E2 frame
drive is 782 m
3
/h (460 cfm).
3. If external duct work is added to the exhaust path of the drive, additional back pressure will
be created that will reduce the cooling of the drive. The drive must be derated to accom-
modate the reduced cooling. First, the pressure drop must be calculated, then refer to the
derating tables located in the VLT High Power Operating Instructions.
