172-65188M-08 (
M-COS 3,16,21
Pressure Reducing Valve) 24 Jun 2015
22
Disassembly
NEVER apply direct heat to the float. The float may explode due to
increased internal pressure, causing accidents leading to serious injury or
damage to property and equipment.
WARNING
Use hoisting equipment for heavy objects (weighing approximately
20 kg or more). Failure to do so may result in back strain or other injury if
the object should fall.
CAUTION
When disassembling or removing the product, wait until the internal
pressure equals atmospheric pressure and the surface of the product
has cooled to room temperature. Disassembling or removing the
product when it is hot or under pressure may lead to discharge of fluids,
causing burns, other injuries or damage.
CAUTION
Make sure the power supply switch is OFF before carrying out work on
the wiring or inspections involving disassembly.
If such work is carried out with the power on, there is a danger that
equipment may malfunction or electric shock may occur, leading to
injury or other accidents.
CAUTION
Make sure that wiring work requiring a special license is carried out by
qualified personnel.
If carried out by unqualified personnel, overheating or short circuits
leading to injury, fires, damage or other accidents may occur.
CAUTION
When using this product, NEVER stand close to, or leave tools anywhere
near moving parts, such as the shaft.
Contact with moving parts or objects becoming caught in moving parts
could lead to injury, damage or other accidents.
CAUTION
It is a recommended practice to dismantle and inspect the
M-COS
once a year for
preventive maintenance purposes. It is especially important to perform an inspection
immediately after the initial run of a new line or before or after equipment such as a
heater is out of service for a long period of time. (Installation, inspection,
maintenance, repairs, disassembly, adjustment and valve opening/closing should be
carried out only by trained maintenance personnel.)
Remove all steam from the piping (both upstream and downstream).
Putting the actuator to work, let the pressure adjustment screw pull up to establish
the free condition. (The adjustment screw can be fully pulled up by pressing the
pressure setting lever switch (on the controller) to the DOWN side and holding it
there for about one minute.)
Disconnect the actuator wiring.
Wait for the body to cool before attempting to remove the
M-COS
from the line. Then
remove inlet and outlet flange retaining bolts and nuts to permit removal of the
M-
COS
. Secure the
M-COS
in a vise to perform the inspection.
