NVE 4307 - Belt Drive

4307 & 4310 Blower | 15
· DO NOT USE A HAMMER TO SLIDE THE COUPLERS ONTO THE SHAFT AS
THIS MAY RESULT IN BLOWER DAMAGE
· Failure to properly align the couplers can cause premature wear
of the blower bearings and coupler sleeve.
· Couplers must be guarded to prevent entanglement.
Belt Drive
All NVE blower input shas are equipped with an outboard roller bearing which
allows the use of V-belt.
The driving pulley from the prime mover must be mounted on the intake side of
the blower to prevent unloading of the blower bearings.
Use a narrow hub sheave and insure that the inner hub face is not more than 1/4”
from the face of the gearbox. Be sure to also use an adjustable belt tensioning
system to allow compensaon for belt wear.
· Excessive belt tension could damage the blower and prime mover.
· Belts and pulleys must be guarded to prevent entanglement.
Use matched sets of V-belts to insure uniform torque transmission. If a belt goes
out, replace the whole set.
· Use a rust preventave oil with a ash point over 400°F
· Dispose of used rust preventave oil according to local regulaons
Installation
Rotation and Airow
Diesel Engine Precautions
· DO NOT OPERATE BLOWER WITH A DIESEL ENGINE RUNNING AT
LOW RPM’S AS TORQUE PULSES CAN CAUSE ROTOR LOBE CONTACT
AND DAMAGE TO THE BLOWER.
When directly driving the blower with Diesel engine, bring the engine up to oper-
ang RPM and then engage the blower via the clutch. Be sure to start the blower
under no load condions.
Use cauon when using a Diesel engine that is signicantly oversized for the
operang point of the blower. Doing so can result in an ineral mismatch, excess
torsional vibraons at low RPM’s and blower lobe contact.
Direct Coupler Installation and Alignment
Slide the couplers onto the blower sha and prime mover sha using appropriate
tools.
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