York XT AHU - FIGURE 45 - Solution XT Adjustable Motor Base (Top Mount)

JOHNSON CONTROLS
56
FORM 102.20-OM2
ISSUE DATE: 6/01/2015
SECTION 3 - MAINTENANCE
PARALLEL MISALIGNMENT
(FIG. 4)
PARALLEL ALIGNMENT
(FIG. 5)
DRIVE SIDE
(FIG. 1)
DRIVE SIDE
(FIG. 2)
MOTOR BASE MOUNTING HARDWARE
MOTOR BASE
ADJUSTMENT SCREWS
(DRIVE SIDE)
MOTOR BASE
MOTOR BASE SUPPORT RAILS
MOTOR
MOTOR BASE ADJUSTMENT SCREWS (OPP-DRIVE SIDE)
MOTOR BASE MOUNTING HARDWARE
MOTOR
MOUNTING/ADJUSTMEN
T
HARDWARE
PLENUM
FAN
MOTOR
MOTOR'S
SHEAVE
FAN'S SHEAVE
NOTES: 1. THE SHEAVES SHOULD BE CENTERED ON THE SHAFT'S KEYWAY. SHEAVE CAN BE CLOSER TO THE BEARING,
AS LONG AS THE SHEAVES HUB IS ABLE TO FULLY ENGAGE WITH THE KEY. 2. CHECK FOR PARALLEL MISALIGNMENT BY PLACING A STRAIGHT EDGE ACROSS THE OUTER FACE OF THE
SHEAVES (FIG. 5). STRAIGHT EDGE IS TO BE LONG ENOUGH THAT IT EXTENDS PAST BOTH SHEAVES. 3. IF THE SHEAVES ARE MISALIGNED (FIG. 4), LOOSEN THE MOTOR'S MOUNTING HARDWARE AND SLIDE THE MOTOR
FORWARD (OR BACK) TO BRING THE SHEAVES INTO ALIGNMENT (FIG. 5), THEN RE-TIGHTEN HARDWARE.
STRAIGHT EDGE
NOTE 2
NOTE 3
NOTE 3
FAN'S BEARING
KEYWAY
KEYWAY
LD16606
FIGURE 45 - SOLUTION XT ADJUSTABLE MOTOR BASE (TOP MOUNT)