V-Belt Drive Maintenance - Quincy QGB Series Instruction Manual

V-belt Drive Maintenance

QGB series compressors are equipped
with an automatic belt-tensioning device
and require no adjustments between belt
replacements.
Warning!
The automatic spring tensioner system
should not need disassembly.
component in the automatic spring
tensioner system is damaged and
needs replacement, be sure to relieve
the tension in the spring before doing
so. DO NOT attempt any adjustments
to the automatic spring tensioner
system without first relieving the
tension in the spring. Failure to do
may result in component damage,
system damage, or personal injury.
Belts must be replaced when
automatic belt tensioning indicator pin
(#8) has reached full length of travel
in its adapter groove. The indicator
pin is used as a visual aid to show the
amount the belts have stretched and
give a visual indication to when the
belts need to be replaced. As the
belts stretch, the spring (#3) along with
motor weight, forces the tensioner rod
(#5) down to keep adequate tension in
the belts. As this occurs, the indicator
E 100
vERY HOuRS FOR
1000
THE FIRST HOuRS
E 1000
vERY HOuRS
notiCe!
If at any interval the belts appear to need servicing (show signs of thermal stress or
excessive cracking), there are nicks in the sheave grooves or the indicator pin has
bottomed out in the groove, please contact Quincy Compressor.
If a
CLEvIS ADAPTER
SPRING wASHER
TENSIONER ROD
Belt Maintenance Schedule
C
HECK BELT CONDITION AND POSITION OF BELT TENSIONING
INDICATOR SPRING PIN IN GROOvE
OF INDICATOR PIN BOTTOM FROM BOTTOM OF GROOvE
( A).
DIMENSION
C
HECK BELT CONDITION AND POSITION OF BELT TENSIONING
INDICATOR SPRING PIN IN GROOvE
OF INDICATOR PIN BOTTOM FROM BOTTOM OF GROOvE
( A).
DIMENSION
Quincy Compressor-QGB
Section VI - Servicing
pin which is pressed into the tensioner rod
will move down in the slot in the clevis
adapter (#2) that is pinned to the clevis
(#).
Caution!
Use caution when working with any
spring assisted mechanism.
compressed, this spring can release a
significant amount of energy without
warning, causing serious injury.
(#1)
CLEvIS
(#2)
(#3)
SPRING
(#4)
(#5)
. R
ECORD POSITION
. R
ECORD POSITION
™
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When
(#6)
TOP HITCH PIN
(#7)
TOP CLEvIS PIN
(#8)
INDICATOR PIN
(#9)
SPRING NuT
(#10)
jAM NuT
MOTOR PLATE TONGuE
(#11)
(#12)
BOTTOM CLEvIS PIN
(#13)
BOTTOM COTTER PIN
A
39