COOK H-Series - Manual (Page 7)

7
Troubleshooting
Problem and Potential Cause
Low Capacity or Pressure
•Incorrect direction of rotation. Make sure the fan rotates in same direction as the arrows on the motor or belt drive assembly.
•Poor fan inlet conditions. There should be a straight clear duct at the inlet.
•Improper propeller alignment.
Excessive Vibration and Noise
•Damaged or unbalanced propeller.
•Belts too loose; worn or oily belts.
•Speed too high.
•Incorrect direction of rotation. Make sure the fan rotates in same direction as the arrows on the motor or belt drive assembly.
•Bearings need lubrication or replacement.
•Fan surge.
Overheated Motor
•Motor improperly wired.
•Incorrect direction of rotation. Make sure the fan rotates in same direction as the arrows on the motor or belt drive assembly.
•Cooling air diverted or blocked.
•Improper inlet clearance.
•Incorrect fan RPMs.
•Incorrect voltage.
Overheated Bearings
•Improper bearing lubrication
•Excessive belt tension.
HEE/HES/HER Parts List
17
16
15 14
13
12
11
10 9
8 7 6
5
4 3
2
1
6
5
4
3
2
1
8
9
10
11
7
17
16
15 14
13
12
11
10
9
8
7
6 5
4
3 2 1
Part
No.
HEF, HES, HEE, HER, HXEL, HXEM, HXSL, HXSM
20-30 36-48 54-72
1 — — Hood Support Angle(2)
2 Motor Motor Motor
3 Motor Sheave Motor Sheave Motor Sheave
4 Motor Plate Motor Plate Motor Plate
5 Belts Belts Belts
6 — — Center Post (2) (Size72 or
HEF size 60 only)
7 Fan Sheave Fan Sheave Fan Sheave
8 Shaft Shaft Shaft
9 Topcap Topcap Topcap
10 Corner Post (4) Corner Post (4) Corner Post (4)
11 Hood End Hood End Hood End
12 Hood Side Hood Side Hood Side
13 Perimeter Angle (4) Perimeter Angle (4) Perimeter Angle (4)
14 Bearings Bearings Bearings
15 HXEM/HXSM/HXEL/HXSL - X-Stream Propeller:
HEE/HES/HER - Extruded Propeller
16 Base Assembly: Power Assembly
17 Supply Venturi Supply Venturi Supply Venturi
Part
No.
HEE-D/HES-D/HER-D
20-30 36-48 54-60
1 — — Hood Support Angle (2)
2 Motor Motor Motor
3 Motor Plate Motor Plate Motor Plate
4 Topcap Topcap Topcap
5 Corner Post (4) Corner Post (4) Corner Post (4)
6 Hood End Hood End Hood End
7 Hood Side Hood Side Hood Side
8 Perimeter Angle (4) Perimeter Angle (4) Perimeter Angle (4)
9 Extruded Propeller Extruded Propeller Extruded Propeller
10 Base Assembly/
Power Assembly
Base Assembly/
Power Assembly
Base Assembly/
Power Assembly
11 Supply Venturi Supply Venturi Supply Venturi
HXEL/HXEM/HXSL/HXSM Parts List
HEE-D/HES-D/HER-D Parts List