CARNES COMPANY, 448 S. Main St., P. O. Box 930040, Verona, WI. 53593-0040 Phone:608/845-6411 Fax: 608/845-6470 [email protected] www.carnes.com
INSTALLATION, OPERATING AND MAINTENANCE INSTRUCTIONS
MODEL VDBA
SERIES BLOWER
CAUTION!
DO NOT INSTALL, USE OR OPERATE THIS EQUIPMENT UNTIL THIS MANUAL HAD BEEN READ AND UNDERSTOOD.
READ AND SAVE THESE SHEETS FOR FUTURE USE.
FORM 1500
RECEIVING INSPECTION:
Check for damage or missing parts immediately upon receipt. Ensure that wheel rotates freely.
REPORT ANY DAM-
AGE PROMPTLY TO CARRIER.
INSTALLATION:
Model VDBA series blowers are suitable for both suspension or base mounting.
SUSPENSION MOUNTING:
Suspend the unit using 4 — 1/2” diameter threaded rods through 4 — 9/16” clearance holes located in the top of the
unit. Ensure the unit is level.
BASE MOUNTING:
For base mounting, secure the unit through the bottom 4 — 9/16” holes to a solid base.
S
S
S
S
S
S
SUSPENDED MOUNT
OR
OR
RIGID
MOUNT
SPRING
ISOLATOR
VDBA
SERIES
BLOWER
VDBA
SERIES
BLOWER
BASE MOUNT
RIGID MOUNT
RUBBER ISOLATOR
Flexible inlet and outlet collars are recommended to minimize vibration transmission.
MOTOR AND V-BELT DRIVES:
Mount motor with hardware provided and install pulleys and belt(s) with proper tension. Follow illustrated recommenda-
tions on belt installation on page 2.
BELT TENSION AND PULLEY ALIGNMENT:
1. Excessive belt tension is the number 1 cause of blower bearing failure.
2. Proper belt tension and pulley alignment are essential for trouble free operation.
3. A simple “Rule of Thumb” for checking belt tension is illustrated on page 2.
4. When belt is grasped as shown on page 2, a total deflection of approximately 1” should be easily attained.
5. Insufficient deflection indicates that the belt is too tight, resulting in noise from excessive vibration, premature
bearing failure, and short belt life. Tight belts may overload a motor that would otherwise be adequate.
6. Excessive deflection is a indication that the belt is not tight enough. If not corrected, slippage could cause
loss of blower speed and belt failure through wear.
(Continued on next page)
FORM 1500
