T1689 Technical Manual Rev 07
CDM Assembly
MV3000 Air Cooled DELTA
Fans
Page 115
5.4.3
Lower Cross-members
5.4.3.1
Rear
Fit the lower rear cross-member (Item
B
in Figure 5–2). The cross-member is secured to the side rails with two
M6 x 12 mm hexagon head self-tapping screws, and to the enclosure pillars with four M5 x 10 mm hexagon
head screws.
5.4.3.2
Front
All six fixing holes for mounting the lower front cross member are pre-drilled to suit the M6 self-tapping screws
supplied. The self-tapping screws may be driven in by hand using a pozi-drive screwdriver.
The exact position of the lower front cross-member (Item
C
) is shown in Figure 5–2.
Secure using six M6 x 12 mm hexagon head self-tapping screws between the two lower side-supports. Ensure
that the threaded inserts are in the top and front faces.
5.4.4
Guide Plates
Two guide plates are shown in Figure 5–2 (Item
D
). A guide plate is required for each DELTA power module.
Guide plates are secured to the lower cross-members with four M5 x 10 mm self-tapping screws. The support
plates locate onto the top of the lower cross members at each position where a module is to be fitted. The
angle guide rails should be on top, with the raised tab to the front.
5.4.5
Upper Cross-Members
5.4.5.1
Rear
Fit the upper rear cross-member (Item
E
in Figure 5–2). The cross-member is secured to the side rails with four
M6 x 12 mm hexagon head self-tapping screws. Ensure that the turned flange is at the bottom and facing
backwards.
5.4.5.2
Front
Fit the upper front cross-member (Item
F
in Figure 5–2). The cross-member is secured to the side rails with
four M6 x 12 mm hexagon head self-tapping screws. The threaded inserts must face forward and downwards.
5.5
FANS
One fan must be fitted above each module.
5.5.1
Fan installation
The fan assembly is installed to the underside of the top cross members. Partly screw in the four M6 x 15 mm
(
9
/
16
in) hexagon headed bolts with plain and spring washers and then slot the fan into place using the key-
holes in the mounting flange as shown in Figure 4-4. The fan mounting flange should sit flat against the
underside of the two top cross members.
The fans are heavy and may be awkward to lift into place, each fan may be split into two pieces to simplify
installation. The fan duct fitted first, the main body of the fan then being added by pushing horizontally into
the location tabs at the rear of the assembly and fixing by the two M6 bolts at the front. Care must be taken to
ensure that any wiring disconnected from the terminal block is correctly re-connected.
