Maintenance Waukesha Cherry-Burrell
Page 20 95-03087 10/2012
Maintenance
Maintenance Intervals
Maintain adequate stock of replacement parts. See the items in
bold beginning on page 32 for recommended spare parts.
Maintenance intervals should be determined by the user and spe-
cific application, based on the following conditions:
• Daily operation period
• Switching frequency
• Application parameters, such as temperature, pressure, and
flow
• Product type
• CIP time and temperature
Use the following recommendation as a rough guide:
• For fluid temperatures ranging from 180
°F to 212°F (82°C to
100
°C): approx. every 3 to 6 months
• For fluid temperatures of 140
°F (60°C): approx. every 12
months
The values listed above are only general guidelines and do not
apply, for example, to fluids which crystallize on contact with air.
The values listed are subject to the chemical resistance of the
seal material.
Inspection
Inspect the following on a regular basis:
• Actuator connections for air leaks
• Valve body and stem o-rings
• Valve seats (If leakage occurs, see “Troubleshooting” on
page 86.)
• Pneumatic connections:
• Air pressure at supply connection
• Air lines for kinks and leaks
• Threaded connections for tight fit
• Clean air filter at regular intervals
• Electrical connections secure on control module:
• Wire connections tight on terminal strip
• Electrical connections to control module
• Threaded strain relief for tight fit.
Lubrication
No lubrication is required other as than noted in the disassembly
and assembly procedures. (Use food grade non-petroleum (sili-
cone) grease on seals and o-rings.)
Apply Bostik Never-Seez
®
White Food Grade with PTFE or
equivalent to all bolts and threaded stem parts.
DANGER: Do not put a hand into
the yoke or body of a
pneumatically-actuated valve.
VA100-359b
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