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Waukesha Cherry-Burrell
Maintenance
Maintenance Intervals
Inspection
DANGER: Do not put a hand into the
yoke or body of a pneumatically
actuated valve.
Lubrication
Cleaning
NOTE: Actuate each valve a minimum of
twice each cycle to ensure effective cleaning
and sanitizing.
August 2008
Maintain adequate stock of replacement parts. Maintenance intervals should be
determined by the user and specific application, based on the following condi-
tions:
•
Daily operation period.
•
Switching frequency.
•
Application parameters, such as temperature, pressure, and flow.
•
Product type.
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 67.)
•
Pneumatic connections:
Air pressure at supply connection.
Air lines for kinks and leaks.
Threaded connections for tight fit.
Threaded strain relief for tight fit.
Electrical connections secure on control module.
Wire connections tight on terminal strip.
Clean air filter at regular intervals.
No lubrication is required other than as noted in the disassembly and assembly
procedures. (Use food grade non-petroleum (silicone) grease on seals and o-
rings.) Apply Bostik Never-Seez
all bolts and threaded stem parts.
CAUTION: Avoid splashing any liquid into the air vent of the actuator
during clean up.
Cleaning-In-Place (CIP)
CIP methods can be used to clean installed automatic valves without disassem-
bly. Methods must be selected subject to specific requirements of sanitarians and
each application. Check with local chemical suppliers for the most effective
cleaning agents and procedures.
Mix Proof valves can be fitted with a 1/4" NPT flush connection for rinsing the
area between the seats and the vent/drain port. The area can be flushed regularly
in the event of long intervals between CIP cleanings. See "Connecting Flush
Supply Line (Optional)" on page 10.
CAUTION: During valve opening and CIP cleaning, fluid escapes from
the drain port. Drain it off to prevent any possible hazard to personnel.
Connect the flush connection to a suitable water supply to flush the vent/drain
during operation of the processing system.
95-03076
Maintenance
®
White Food Grade with PTFE or equivalent to
Page 15
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