Belt Tension Method; Pre-Start And Start-Up - Carrier WeatherMaster 48HC Series Installation Instructions Manual

SET
SCREW
TORQUE ALL SHEAVE SET SCREWS TO 110-130 in. lbs
TABLE 1
BELT SMALLEST
CROSS SHEAVE
SECTION DIAMETER
3.0-3.6
A, AX 3.8-4.8
5.0-7.0
3.4-4.2
B, BX 4.4-5.6
5.8-8.6
TABLE 2
BELT CONDITION
New
Used
Fig. 73 — V-Belt Force Label
© 2020 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53480254-01
Downloaded from ManualsNet.com
BELT DEFLECTION FORCE - SEE TABLE 1
DEFLECTION = BELT SPAN
BELT DEFLECTION FORCE (LBS)
UNNOTCHED
NOTCHED BELTS
BELTS
USED NEW USED
3.7 5.5 4.1
4.5 6.8 5.0
5.4 8.0 5.7
— — 4.9
5.3 7.9 7.1
6.3 9.4 8.5
TENSION FORCE IN BELT (LBS)
100
80
Printed in U.S.A.
search engine

BELT TENSION METHOD

Requires belt tension gage that measures tension in belt in units of
lbs force.
64
STRAIGHT
EDGE
SET
SCREW
NEW
MOUNTING
6.1
BOLTS (4)
7.4
8.4
7.2 Fig. 74 — Belt Drive Motor Mounting
10.5

Pre-Start and Start-Up

12.6
This completes the mechanical installation of the unit. Refer to the
unit's Service Manual for detailed Pre-Start and Start-Up instruc-
tions. Download the latest versions from HVAC Partners
(www.hvacpartners.com).
Form 48HC-4-6-03SI
BLOWER PULLEY
V-BELT
MOTOR MOUNTING
Pg 54 1-2020 Replaces: 48HC-4-6-02SI
MOTOR
PULLEY
MOTOR
PLATE