EATON
WSB11206 WCSB Tensioner / Brake with ORB Coolant Ports Installation, Operation and Maintenance Manual E-CLCL-II009-E
August 2015
12
WCSB tensioner / brake with ORB coolant ports
2.4.13 Open Loop Systems
For efficient operation of the WCSB tensioner / brake
assembly, an adequate supply of filtered fresh water
is required. (See section 2.4.1 - 2.4.2). Excessive
water hardness promotes the formation of scale
deposits, which, in time, will affect the service life of
the WCSB tensioner / brake assembly. Water of high
acidity or high in corrosive salts may cause electrolytic
corrosion between the dissimilar metals used in the
water cavities. Water treatment should be considered
if the properties of the water exceed the following:
Equivalent calcium carbonate content hardness):
Maximum 100 p.p.m. pH value: 7.0 to 9.0.
Caution
Open loop systems should be thoroughly flushed
with clean fresh water after operation to reduce
the corrosive effects of contaminants on
internal components.
2.4.14 Closed Loop Systems
For efficient operation of the WCSB tensioner / brake
assembly in a closed loop system, ethylene glycol
coolant conforming to SAE Standard J1034 should
be used. For preparation of the proper concentration
of a water / ethylene glycol mixture, use make-up
water which is low in corrosive ions such as chlorides
and sulfates. Recommended pH value of the water /
ethylene glycol glycol mixture: 7.5. to 10.5.
Outlet
manifold
Outlet
manifold
Outlet
manifold
Outlet
manifold
Single
Dual
Triple
Quad
16% 34% 34% 16%
12.5% 25% 25% 25% 12.5%
50%
50%
25%
50%
25%
)( )( )( )(
)( )( )( )( )(
)(
)(
)(
)(
)(
V
V
V
V
Pressure
relief valve
Heat
exchanger
Inlet
mainfold
Outlet
mainfold
Temperature
sensing bulb
Modulating
valve
Out
Raw water
In
Strainer
Pressure switch
Centrifugal
pump
Strainer
Level switch
Reservoir
WC
Motor
Temperature
switch
Figure 5
Summary of Contents for Airflex WSB11206
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