EATON
WSB11206 WCSB Tensioner / Brake with ORB Coolant Ports Installation, Operation and Maintenance Manual E-CLCL-II009-E
August 2015
16
WCSB tensioner / brake with ORB coolant ports
3.5.6 If leakage or blockage of any water-cooled chamber
is suspected, a static or dynamic test may be
performed as follows:
3.5.6.1 Static Pressure Test
(a)
Release the spring set brake by applying the
proper air pressure,
Warning
Ensure that the machinery will remain in a
safe position prior to releasing the WCSB tensioner /
brake assembly.
(b)
Bleed all air from within the coolant cavity.
Air bleeding must be accomplished by running
coolant through the cavity with the tensioner
secured in its proper operating position.
Note: Avoid contaminating the friction material with
coolant or water.
Warning
Contamination of the friction material could result in
erratic or loss of torque.
(c)
After the air has been removed, install a pipe plug(s)
in the outlet(s) and apply maximum allowable coolant
pressure measured at the inlet to the water cavity.
Maximum allowable is 40 psig (2.7 bar) for size
36WCBS and 48WCSB tensioner / brake assemblies,
and 45 psig (3.0 bar) for the 24WCSB tensioner /
brake assembly. Maintain this pressure for
30 minutes. Check for leakage at O.D. and I.D.
sealing areas.
Caution
Be sure to apply and retain air pressure to the
cylinder (19) of the WCSB tensioner / brake assembly
to release the spring pressure on the WCSB
tensioner / brake assembly during static coolant
pressure testing. Engagement of the brake during
testing could develop surge pressures exceeding
the maximum allowable within the coolant cavities
resulting in possible damage to the seals.
3.5.6.2 Dynamic Flow Test
(a)
Dynamic flow testing of the WCSB tensioner / brake
assembly should be conducted at the required flow
rate for the rated HP dissipation and coolant quality,
as given in Table 4. Inlet pressure for the appropriate
WCSB tensioner / brake assembly model is
not to be exceeded.
(b)
There should be no restrictions on the outlet side of
the WCSB tensioner / brake assembly to cause any
backpressure to the unit. Coolant inlet and outlet
sizes are listed in Table 4. Full size hoses and piping
should be used. Check for low flow and / or leakage
at the O.D. and I.D. seal areas.
4.0 MAINTENANCE
Warning
Before doing any maintenance work on the WCSB
tensioner / brake assembly, make sure that the
machinery will remain in a safe position. Failure to do
so could result is serious injury or possibly death.
Warning
Only qualified maintenance personnel should
install, adjust or repair these WCSB tensioner /
brake assembly. Faulty workmanship will result in
unreasonable expo- sure to hazardous conditions or
personal injury.
Caution
Read these instructions thoroughly and review until
you fully understand the parts replacement steps
before proceeding with the work described in this
section. Failure to follow these instructions can result
in unreasonable exposure to hazardous conditions or
personal injury.
Содержание Airflex WSB11206
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