Flowserve Atomac AKH 2.2 Instructions De Service page 6

QUICK CHECK
Before operating, check the valve as follows:
Open and close the valve, and observe the movement of the actuator stem. The movement must be smooth.
Check for maximum stroke through change of signal (ie pneumatic / electrical signal).
Check all air connections for leaks.
Check packing nut(s) for proper tightness. Packing nut(s) should be slightly over finger-tight; however, tighten
only as necessary to prevent stem leakage (see appropriate IOM for details).
NOTE: An excessively tightened packing can cause excessive packing wear and can hinder the free
movement of the plug stem.
Check fail-safe position. To do this, close supply pressure and / or electrical signal and observe whether the valve
opens or closes as defined.
If temperature cycling occures, re-tighten all bolt connections and packing as necessary and check for leaks.
GENERAL MAINTENANCE
To avoid possible injury to personnel or damage to products, safety rquirements and local health and safety rules
must be strictly adhered to. Modifying this product, substituting non-factory parts, or using maintenance procedures
other than outlined in this instruction could drastically affect performance and be hazardous to personnel and
equipment, and will void existing warranties.
DANGER: Between actuator and valve there are moving parts. To avoid injury keep all hands, hair and
clothing away from all moving parts when operating the valve.
Welding to repair or to connect the valve may only be performed by trained and qualified welding personnel.
Apart from the operating instructions and the obligatory accident prevention directives valid in the country of use,
all recognised regulations for safety and good engineering practices must be followed.
WARNING: BEFORE products are returned to FLOWSERVE for repair or service FLOWSERVE must be
provided with a certificate which confirms that the product has been decontaminated and is clean.
STOP!
Flowserve will not accept deliveries if a certificate has not been provided (a form can be obtained from
FLOWSERVE ).
Storage
FLOWSERVE products are manufactured from various materials. Products not manufactured from corrosion resistant
materials are provided with an appropriate protection. This means that FLOWSERVE products are well protected
from corrosion. Nevertheless FLOWSERVE products must always be adequately stored in a clean, dry environment.
Plastic caps are fitted to the flange faces to prevent the ingress of foreign materials. These caps should not be
removed until the valve is actually mounted into the system.
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