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1.0

INTRODUCTION

Throughout this manual, there are a number of
HAZARD WARNINGS that must be read and
understood in order to prevent possible injury
and/or damage to the equipment. Three
signal w ords, " DANGER" , " WARNING" , and
" CAUTION" are used to indicate the severity
of a hazard and are preceded by the safety

alert symbol.

Denotes the most serious hazard, and is
used when serious injury or death WILL
result from misuse or failure to follow
specific instructions.

When serious injury or death MAY result
from misuse or failure to follow specific
instructions.

When injury or product/equipment
damage may result from misuse or
failure to follow specific instructions.

It is the responsibility and duty of all personnel
involved in the installation, operation and
maintenance of the equipment on w hich this
device is used to fully understand the

, and

1.1

Description

1.1.1

The Airflex WCB w ater-cooled tensioner is
designed for constant tension applications. It is
exceptionally w ell suited for high inertia stop-
ping and rapid heat dissipation. The design of
the WCB tensioner permits midshaft or
endshaft mounting. The rugged construction
ensures long, trouble free service. Several
models are available having single and multiple
friction discs. The tensioner model number
identifies the number of discs and the disc
diameter. For example, 114WCB means one
14" diameter disc. When size, such as 14WCB,
is referred to in this manual, it means that the
information given applies to all models using
the 14" diameter disc; i.e., 114WCB, 214WCB,
etc.

1.1.2

Standard 8 and 14 WCB models have parts list
numbers ending w ith " B" . These units have
riveted friction lining and no stop tubes or w ear
rings.

1.1.3

Standard 18, 24 and 36 WCB models have
screw ed on friction lining, stop tubes and w ear
rings. These units have part list numbers
ending w ith " E" .

1.1.4

Some earlier 18, 24 and 36 WCB units have
riveted friction lining and no stop tubes or
w ear rings. These units have part list numbers
ending w ith " B" .

1.1.5

Tensioners can be used for either closed loop or
open loop w ater systems.

1.1.6

This manual includes metric equivalents
usually show n in (#) follow ing the U.S.
measurement system value. Be sure to use
the correct value.

1.2

Specials

1.2.1

WCB models w ith high coefficient lining are
designated w ith the follow ing alphanumeric
designators:

1.2.2.1

Models ending w ith " C" (146XXXC) are
WCB’s w ith riveted linings and no stop tubes.
8 and 14 WCB’s are current HI-CO elements
and 18,24 & 36 models are discontinued.

1.2.1.2

Models ending w ith " D" (146XXXD) are
WCB’s w ith screw ed on linings and stop tubes.
18, 24 & 36 models are current HI-CO
elements.

1.2.2

214WCB Models w ith an " A"  (146XXXA)
designator are elements w ith a machined
cylinder face to accept a mounting flange to
accept a 108 WCB for dual purpose operation.
The only difference betw een the " A"  model
and the " B’ model is the Cylinder (19)  part
number. " A"  models use P/N513398 for item
(19). All other parts on the part list is the same
as a " B"  model element.

1.2.3

WCB Models w ith " G" (146XXXG)
designator have bonded standard lining.
To replace see table 12 in section 6.2 and order
a complete friction disc sub assembly.

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