Unit Conversion - McQuay M5RT 90 BR Technical Manual

Unit Conversion

In the case of converting standard unit to downthrow unit, follow the steps as stated below:
M5RT 90,120, 150, 180, 210 & 250 BR
1
► ► ►
Remove the
side panel
4
Cover the horizontal
return opening with the
cover and screw tightly.
Refer Note 2.
Lastly, install back the side panel.
Install back the pulley belt. Adjust the belt tension. Lastly, install back the side panel. Refer Note 1.
Note 1
For downthrow conversion, belt length need to be changed.
For unit with standard pulley, belt length
Shaft to shaft distance for downthrow, C-C = b mm
M5RT90BR
a 1382
b 375
Note 2
Sealant such like gasket (field supply) shall be placed in between the metal cover and flange. Besides that,
weather-proof silicone shall be applied on all the joints, screw holes and gaps to ensure water-tight condition.
Remove the
Pulley Belt
For M5RT 90BR
The two side plates are screwed
on the blower support as shown
Remove the side
panel at return side
Unscrew the vertical return
cover from the base panel
= a mm
M5RT120BR M5RT150BR
1357
388
2
▼ ▼ ▼
3
◄ ◄ ◄
Install back the pulley
belt. Adjust the belt
tension by moving the
motor base.
M5RT180BR
1250 1382
375 445
9
Remove screws
at both sides
Detached
blower
Detached the
blower support
For M5RT 120, 150, 180, 210 & 250BR
ow structure
are screwed to blower
Cover the
horizontal supply
opening with the
blower support
that detached
from the blower
and screw tightly.
Refer Note 2.
Turn the blower to face bottom.
Screw at both sides.
M5RT210BR M5RT250BR
1382
445
1382
435