M A I N T E N A N C E; Daily Inspection - Yoshitake AF-7 Instruction Manual

●Cleansing the inside of the piping
(1) Please cleanse the inside of the pipe thoroughly and remove any dust or scales before
installing the product. Please note that all repairs for disorders due to foreign matters shall
be charged.
●Installation pipe mount for the safety valve
(1) The pipe mount for the safety valve should have sufficient strength and rigidity
against compression, shear and bending stress that is caused in the reaction against
the exhaust flowing up through the exhaust pipe attached to the safety valve.
(2) Install the safety valve vertically as close as possible to the can body and header. By
doing so, the pressure loss of the mount can be suppressed, preventing decrease in
the discharge volume and unstable functioning of the safety valve.
●Installation of an exhaust pipe onto the safety valve
(1) Install an exhaust pipe and expansion joint so that the stress caused by the thermal
expansion of the equipment or the fluctuation of the exhaust pipe due to the heat of
the safety valve does not affect the safety valve.
●Installation of the flange on the safety valve inlet
(1) As the valve seat is screwed on to the flange inlet, there is a difference in level on the
flange surface of this product. Upon installation, apply a flange gasket that suits the
nominal size and make sure that the gasket seals the valve seat completely (See
Figure 4).
Figure 4 Installation of flange on the inlet
8．Maintenance
    Cautions
(1) Be sure to wear gloves when touching the product or piping.
＊Be aware of scalding or injuries.
(2) Wear earplugs when checking the operation of the product, and do not stand in front of the
exhaust pipe .Do not look into the pipe or put your hand out to the pipe.
＊The product makes a loud blowing noise during operation. Be aware of spluttering fluid from
the product.
(3) In case of raising the fluid pressure, check beforehand that no problems will occur regarding
the equipment installed onto the piping.
＊Be aware of damage to the equipment.
(4) Do not disassemble the product.

8.1 Daily inspection

Please check to see if there is any fluid leaking from the product or piping on the outlet side of
the product.
＊Please contact us if you notice anything abnormal.
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