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RT-SVX34R-EN
Table 67. Supply fan sheave and belt (continued)
Tons
Mo-
tor RPM
Fan Sheave
(a) (b) (c)
Fan Bushing
Motor Sheave
(d)
Motor Bushing
(e)
Belt
Brown-
ing
SST
Brown-
ing
SST
Brown-
ing
SST
Brown-
ing
SST
40
10 hp
500 2B5V124 2B124SK
B 1 11/16 SK 1 11/16
2BK36H 2BK36H
H 1-3/8 H-1-3/8
BX95
Notched
525 2B5V124 2B124SK
B 1 11/16 SK 1 11/16
2BK40H 2BK40H
H 1-3/8 H-1-3/8
BX95
Notched
575 2B5V124 2B124SK
B 1 11/16 SK 1 11/16
2BK45H 2BK45H
H 1-3/8 H-1-3/8
BX95
Notched
15 hp
625 2B5V124 2B124SK
B 1 11/16 SK 1 11/16
2B5V42 2B42SH
P1 1-5/8 SH 1 5/8
BX95
Notched
675 2B5V136 2B136SK
B 1 11/16 SK 1 11/16
2B5V50 2B50SDS
B 1 5/8 SDS 1 5/8
BX97
Notched
725 2B5V136 2B136SK
B 1 11/16 SK 1 11/16
2B5V54 2B54SDS
B 1 5/8 SDS 1 5/8
BX97
Notched
50
10 hp
525 2B5V124 2B124SK
B 1 11/16 SK 1 11/16
2BK40H 2BK40H
H 1-3/8 H-1-3/8
BX95
Notched
575 2B5V124 2B124SK
B 1 11/16 SK 1 11/16
2BK45H 2BK45H
H 1-3/8 H-1-3/8
BX95
Notched
15 hp
625 2B5V124 2B124SK
B 1 11/16 SK 1 11/16
2B5V42 2B42SH
P1 1-5/8 SH 1 5/8
BX95Notc-
hed
675 2B5V136 2B136SK
B 1 11/16 SK 1 11/16
2B5V50 2B50SDS
B 1 5/8 SDS 1 5/8
BX97
Notched
20 hp
725 2B5V136 2B136SK
B 1 11/16 SK 1 11/16
2B5V54 2B54SDS
B 1 5/8 SDS 1 5/8
BX97
Notched
(a)
Browning BK160 X 1 7/16 and SST BK160-1-7/16 sheaves are interchangeable.
(b)
Browning BK190 X 1 7/16 and SST BK190-1-7/16 sheaves are interchangeable.
(c)
All other sheaves & bushings are interchangeable only in sheave/bushing combination sets. Sets do not mix vendors.
(d)
Browning and SST sheaves with identical numbers are interchangeable and can be used with each other's bushings.
(e)
Browning H 1-3/8 and SST H-1-3/8 bushings are interchangeable and can be used with each other's sheaves.
(f)
For YC gas/electric only.
(g)
For TC and TE Cooling only and with electric heat units only.
Monthly Maintenance
WWAARRNNIINNGG
HHaazzaarrddoouuss VVoollttaaggee ww//CCaappaacciittoorrss!!
FFaaiilluurree ttoo ddiissccoonnnneecctt ppoowweerr aanndd ddiisscchhaarrggee
ccaappaacciittoorrss bbeeffoorree sseerrvviicciinngg ccoouulldd rreessuulltt iinn ddeeaatthh oorr
sseerriioouuss iinnjjuurryy..
DDiissccoonnnneecctt aallll eelleeccttrriicc ppoowweerr,, iinncclluuddiinngg rreemmoottee
ddiissccoonnnneeccttss aanndd ddiisscchhaarrggee aallll mmoottoorr ssttaarrtt//rruunn
ccaappaacciittoorrss bbeeffoorree sseerrvviicciinngg.. FFoollllooww pprrooppeerr
lloocckkoouutt//ttaaggoouutt pprroocceedduurreess ttoo eennssuurree tthhee ppoowweerr
ccaannnnoott bbee iinnaaddvveerrtteennttllyy eenneerrggiizzeedd.. FFoorr vvaarriiaabbllee
ffrreeqquueennccyy ddrriivveess oorr ootthheerr eenneerrggyy ssttoorriinngg
ccoommppoonneennttss pprroovviiddeedd bbyy TTrraannee oorr ootthheerrss,, rreeffeerr ttoo
tthhee aapppprroopprriiaattee mmaannuuffaaccttuurreerr’’ss lliitteerraattuurree ffoorr
aalllloowwaabbllee wwaaiittiinngg ppeerriiooddss ffoorr ddiisscchhaarrggee ooff
ccaappaacciittoorrss.. VVeerriiffyy wwiitthh aa CCAATT IIIIII oorr IIVV vvoollttmmeetteerr
rraatteedd ppeerr NNFFPPAA 7700EE tthhaatt aallll ccaappaacciittoorrss hhaavvee
ddiisscchhaarrggeedd..
FFoorr aaddddiittiioonnaall iinnffoorrmmaattiioonn rreeggaarrddiinngg tthhee ssaaffee
ddiisscchhaarrggee ooff ccaappaacciittoorrss,, sseeee PPRROODD--SSVVBB0066**--EENN..
Before completing the following checks, turn the unit
OOFFFF and lock the main power disconnect switch open.
Filters
Inspect the return air filters. Clean or replace them if
necessary. Refer to the table below for filter
information.
Table 68. Filters
Unit Model
Quantity
Filter Dimension
(inches)
(a)
TC, TE, YC*330 - 420
16 15½ X 19½ X 2 or 4*
TC, TE, YC*480 & 600
17 15½ X 19½ X 2 or 4*
(a)
Filter dimensions are actual. Nominal filter size is 16 x 20.
Condensate Overflow Switch
During maintenance, the switch float (black ring) must
be checked to ensure free movement up and down.
MMaaiinntteennaannccee
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