After mounting, install flat washer, lock washer, and 3/8” NC nuts. Tighten to 15
Note: Refer to instructions included with seal disc for further details.
Figure 7
CHECKING TIP CLEARANCE
Rotate fan in position inside fan stack to check tip clearance (See Figure 8). The recommended tip clearance is between 1” and 1 1/2 ”. Check for spots where fan blade clearance is not within the recommended tolerance. If necessary adjust fan stack by shimming to obtain proper clearance.
Figure 8
OPERATING INSTRUCTIONS
Start fan and check rotation. Viewed from top (discharge), fan blades should rotate clockwise.
Check motor power consumption to be sure fan is pulling desired load. CAUTION: If positive pitch is set in summer to use all available motor amps (nameplate rating), motor could be over- loaded in winter. Design pitch angles usually do not use all avail-
able horsepower; therefore, motors will not be overloaded at lowest winter temperatures.
Installation Manual 5000 | Page 5 of 8 | August 2000 |
