Lennox ROOFTOP FLEXY FXK 100, Installation, Operating And Maintenance

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IOM – FLEXY II – 1007 – E Page 34
MOUNTING AND ADJUSTING PULLEYS
F
AN PULLEY REMOVAL
Remov e the 2 screws and put one of them in the
extraction threaded screw.
Screw in f ully. The hub and the pulley will separate from
each other.
Remov e the hub and the pulley by hand without damaging
the machine.
F
AN PULLEY INSTALLA TION
Clean and de-grease the shaft, hub and conical bore of the
pulley. Lubricate the screws and install the hub and pulley.
Position the screws without turning them.
Place the assembly on the shaft and screw in the screws
alternativ ely and ev enly. Using a mallet or a hammer with
a wooden wedge, tap on the face of the hub to keep the
assembly in place. Torque the screws to 30 Nm.
Take the pulley in both hands and shake it v igorously to
make sure everything is in place.
Fill the holes with grease for protection.
NOTE: During installation, the key should nev er protrude
out of its groove.
After 50 operating hours, check that the screws are still in
place.
M
OTOR
P
ULLEY
I
NSTALLA TION
& R
EMOVAL
The pulley is held in position by the key and a screw
located in the groove. After unlocking, remov ing this screw
by pulling against the shaft spindle (if necessary, use a
mallet and tap unif ormly on the hub to remove it).
To assemble, proceed in the rev erse order af ter hav ing
cleaned and de-greased the motor shaft and the pulley
bore.
P
ULLEYS
A
LI GN MEN T
After adjusting one or both of the pulleys, check the
transmission alignment using a ruler placed on the inner
f ace of the two pulleys.
NOTE: The warranty may be affected if any major
modif ication is made to the transmission without obtaining
our agreement bef orehand.
VENTILATION : PULLEYS