EATON
WSB11206 WCSB Tensioner / Brake with ORB Coolant Ports Installation, Operation and Maintenance Manual E-CLCL-II009-E
August 2015
10
WCSB tensioner / brake with ORB coolant ports
2.4 Coolant
System
2.4.1 An ORB port can be identified by the machined spot
face and a chamfer (for sealing of the O-ring). See
Figure 4. See Table 2 for the torque to values and
the ORB fitting size associated with each WCSB
tensioner / brake assembly.
ORB Port
Figure 4
Caution
Make sure that the water inlets and outlets are
positioned as close as possible to the 6 o'clock and
12 o'clock positions, respectively. This will help to
minimize the formation of air pockets in the water
cavity during operation, which could contribute to
overheating of the WCSB tensioner / brake assembly.
Caution
Installation of NPT or other incompatible threaded
piping or fittings into ORB ports will damage the
ports, resulting in leakage or other failure.
2.4.2
Installation of straight SAE fittings.
2.4.2.1 Inspect the SAE fittings for damage and
contamination.
2.4.2.2 Apply Molykote
®
55 O- ring lubricant to the O- ring on
the SAE fitting.
2.4.2.3 Turn the SAE fitting into ORB port until finger tight,
then apply the respective assembly torque. Refer to
Table 2.
2.4.3
Installation of adjustable SAE fittings.
2.4.3.1 Inspect the SAE fittings for damage and
contamination.
2.4.3.2 Apply Molykote
®
55 O- ring lubricant to the O- ring on
the SAE fitting.
2.4.3.3 Ensure the O-ring and back up washer on the SAE
fitting are in the proper position on non-threaded
section of the SAE fitting nearest to locknut.
2.4.3.4 Tighten the SAE fitting by hand into the threads of
the ORB port until the back-up washer contacts the
face of the ORB port.
2.4.3.5 To position the SAE fitting, unscrew the SAE fitting
up to one full turn then hold the SAE fitting in desired
position and tighten locknut so that the back-up
washer contacts face of ORB port and forces the
O-ring on the SAE fitting within the boss cavity.
Tighten to the torque listed in Table 2.
Caution
When installing SAE fittings male NPT fittings are
very similar in size to SAE threads and will engage
in the female SAE threaded ports. If this is done the
WCSB tensioner / brake assembly may be damaged!
Only use SAE fittings in the coolant ports of the
WCSB tensioner / brake assemblies.
2.4.4 Maximum allowable coolant pressure is 40 psig
(3.1 Bar) for size 36WCSB and 48WCSB units and
45 psig for the 24WCSB. The use of an accumulator
or pressure relief valve may be desirable to reduce
the effect of pressure spikes in the coolant system
during operation.
Warning
Maximum allowable water pressure is dependent
upon WCSB tensioner / brake assembly model.
Applied pressure or surges exceeding maximum
allowable may result in damage to the WCSB
tensioner / brake assembly.
2.4.5
The coolant supply and discharge hose, pipe and
fitting sizes, along with minimum flow rates for
the WCSB tensioner / brake assembly's rated
horsepower, are listed in Table 4.
2.4.6
Coolant supply connections to the tensioner should
provide a parallel flow through each section of the
tensioner. Series flow is not recommended, as it can
lead to overheating of the WCSB tensioner / brake
assembly.
2.4.7 Inlet and outlet coolant manifolds must be provided.
Manifolds should be constructed to allow for even
flow through all ports.
Содержание Airflex WSB11206
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