Pre-Start-Up Checks; Maintenance - Greenheck Vektor-H Installation, Operation And Maintenance Manual

Pre-Start-Up Checks

1. Check all fasteners for tightness.
2. The wheel should be aligned as shown. Although the wheel position is preset and the unit is test run
at the factory, movement may occur during shipment.
The radial gap should be consistent at all
locations between the centrifugal wheel and
the inlet cone. Centering may be accomplished
by loosening the inlet cone bolts and
repositioning the inlet cone.
To obtain the optimum performance, the
centrifugal wheel must overlap the inlet cone.
Adjustments can be made by loosening the set
screws in the wheel and moving the wheel to
the desired position.
3. Wheel rotation should be in the same direction as the rotation decal affixed to the unit. For 3-phase
installations, fan rotation can be reversed by simply interchanging any two of the three electrical
leads. For single phase installations, follow the wiring diagram located on the motor.
4. Adjustable motor pulleys are preset at the factory for the specified fan RPM. Fan speed can be
increased by closing or decreased by opening the adjustable pulley. Two or three groove variable
pitch pulleys must be adjusted an equal number of turns open or closed.
Note: Any increase in fan speed represents a substantial increase in horsepower required from
the motor. Always check motor load amperage and compare to nameplate rating when
changing fan speed.

Maintenance

DISCONNECT ALL ELECTRICAL POWER TO THE FAN AND SECURE TO THE "OFF" POSITION
PRIOR TO INSPECTION OR SERVICING. FAILURE TO COMPLY WITH THIS SAFETY
PRECAUTION COULD RESULT IN SERIOUS INJURY OR DEATH.
Once the fan has been put into operation, a periodic maintenance program should be set up to preserve
the reliability and performance of the fan. Items to be included in this program are:
• BEARINGS
• BELTS
• FASTENERS
Bearings
Bearings are the most critical moving part of the fan and should be inspected at periodic intervals.
Locking collars and set screws, in addition to fasteners attaching the bearing to the bearing plate, must
be checked for tightness. In a clean environment with temperatures above 32º F and below 200º F, fan
shaft bearings with grease fittings should be lubricated semi-annually using a high quality lithium based
grease. If unusual environmental conditions exist such as temperatures below 32º F or above 200º F,
moisture or contaminants, more frequent lubrication is required.
With the unit running, add grease very slowly with a manual grease gun until a slight bead of grease
forms at the seal. Be careful not to unseat the seal by over lubricating or using excessive pressure.
Bearings without grease fittings are lubricated for life.
5
WARNING
• SET SCREWS
• MOTORS
• REMOVAL OF DUST/DIRT
Radial Gap
Inlet Cone
®