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S
ERIES
2000 I
NSTALLATION
, O
PERATION
AND
S
ERVICE
M
ANUAL
74
Drive Belts and Sheaves
Check for belt ride in the groo
v
e. In m
u
ltiple groo
v
e dri
v
es, belt ride sho
u
ld be
u
niform. Check groo
v
e
w
ear area for
w
ear. Side
w
all of groo
v
e sho
u
ld be
straight, not dished o
u
t. Bottom of groo
v
e sho
u
ld sho
w
no signs of belt
contact.
Shea
v
e alignment, set scre
w
torq
u
e and belt tension sho
u
ld be checked after
8, 24, and 100 ho
u
rs of initial start-
u
p. Vis
u
ally inspect belts and shea
v
es for
excessi
v
e
w
ear. If belts ha
v
e a slick, glazed look, the belts are slipping. Check
dri
v
e capacity and belt tension. Ne
v
er replace only one belt in a
u
sed set, as
u
sed belts
w
ill elongate. Replace the entire set if replacement is necessary.
See Page 65, Section 20.2.1
and Page 66, Section 20.2.2
.
Blower Bearin
g
Lubrication
Blo
w
ers
w
ith spider bracket bearings are pre-l
u
bricated and do not req
u
ire
any re-l
u
brication d
u
ring their entire ser
v
ice life. Blo
w
ers that
u
se pillo
w
block
bearings; sho
u
ld be re-l
u
bricated per the chart belo
w
. The recommended
l
u
bricant is Shell Al
v
ania #2 or S3 grease. To re-l
u
bricate the blo
w
er pillo
w
block bearings, be s
u
re that the grease fittings on the bearing ho
u
sing (or air
handler cabinet
w
all in the case of extended grease lines) are clean. Apply
the recommended grease to the fitting
w
ith a lo
w
-press
u
re grease g
u
n and
add slo
w
ly
w
hile the shaft is sp
u
n by hand. Do not o
v
er-grease. O
v
er-greasing
w
ill red
u
ce the ser
v
ice life of the bearings. Cons
u
lt the blo
w
er man
u
fact
u
rer
for grease capacity recommendations as capacities
v
ary by model.
251 to 500
RPM
501 to 750
RPM
751 to 1000
RPM
8
12
10
7
16
7
5
4
Suggested Lubrication Period in Weeks
Hours Run
Per Day
Lubrication Schedule
Use a No.2 Lithium complex base grease or equivalent