SPX Cooling Technologies CoolingTower Marley MCW - Manual (Page 20)

20
Sheave alignment
• The motor sheave is to be positioned as close as possible to the motor
in order to minimize torque on the motor bushings.
• The motor and fan sheaves may have grooves that are not used. The
bottom surface of the motor and fan sheaves must be aligned within
1 ⁄
8
" of each other and level within 1 ⁄
2°
( 1 ⁄
8
" in 12") in order to not adversely
affect belt and sheave life.
• Alignment can be achieved by placing a straight edge across the top
of the sheaves making sure that it is level and measuring down to the
bottom surface of both sheaves at four points.
• The belt is to be located in the inboard set of grooves closest to the
bearing.
Maintenance
Warning
Bushing Fastener
Torque Values Bushing Fastener Torque ft·lb
ƒ
SH 1 ⁄
4
- 20 6
SDS 1 ⁄
4
- 20 6
SD 1 ⁄
4
- 20 6
SK 5 ⁄
16
- 18 13
SF 3 ⁄
8
- 16 22
E 1 ⁄
2
- 13 35
F 9 ⁄
16
- 12 65
Schedule of Tower Maintenance
Some maintenance procedures may require maintenance personnel to
enter the tower.
The purchaser or owner is responsible for providing a safe method
for entering or exiting the access door.
Included with this instruction packet are separate User Manuals on each
major operating component of the tower, and it is recommended that you
read them thoroughly. Where discrepancies may exist, the separate User
Manuals will take precedence.