Spare Parts; Troubleshooting - Cepex PVC-U Manual Del Usuario

ENGLISH
9.

SPARE PARTS

SPRING RETURN PNEUMATIC ACTUATOR
DN Bare shaft valve
DN50-
DN65
DN80
DN100
SEE TECHNICAL
CATALOG TO
DN125
KNOW THE
DN150
SPECIFIC CODE
DN200
DN250
DN300
10.

TROUBLESHOOTING

T 9.1
FAULT
The disc does not fully open
or close.
Excessive opening or closing
torque.
The valve is not completely
watertight in the sockets.
The valve is not completely
watertight at the sealing gasket.
The valve does not open or close.
The valve does not close
completely.
The valve does not change the
position.
INDUSTRIAL PNEUMATIC BUTTERFLY VALVE
Moun-
PRIS-
CH-AIR ting
MA
kit
43288 35898 30727
30715 35901 30727
30715 35901 30727
30716 35904 -
30716 35904 -
30716 35908 -
30716 35912 -
30717 35914 -
POSSIBLE CAUSE
The sockets were not correctly bevelled.
Foreign materials in the compartment (adhesive, etc.).
The valve has been inactive for a long time.
High temperatures or chemicals can cause damage to
the gasket.
Excessive flange torque.
Misalignment between sockets and valve.
Misalignment between sockets and valve.
Flange screws not tight enough.
Inadequate chemical resistance.
Temperature out of range.
Lack of air pressure
The actuator stroke is not properly adjusted to the
valve.
The torque of the valve has increased above the
calculated value.
The solenoid valve does not operate properly due to
the use of unfiltered air.
The solenoid does not work properly due to impurities
or oxidation by a corrosive environment.
DOUBLE ACTING PNEUMATIC ACTUATOR
Moun-
ting
DN Bare shaft valve
kit
DN50-
55185
DN65
55186 DN80
55187 DN100
SEE TECHNICAL
CATALOG TO
-
DN125
KNOW THE
-
DN150
SPECIFIC CODE
- DN200
- DN250
- DN300
Disassemble the valve and bevel the sockets as indicated
in table T5.2.
Disassemble the valve and check for obstructions in the
disc and gasket contact area.
Operate with an auxiliary release key (not the plastic
handle).
Disassemble the valve and lubricate the sealing gasket.
Check the chemical compatibility of the liquid with the
disc and the working temperature. Replace the gasket.
Tighten flanges as indicated in table T5.1.
Disassemble the valve and reassemble with concentric
alignment (observe the correct tightening sequence and
torque).
Disassemble the valve and reassemble with concentric
alignment (observe the correct tightening sequence and
torque).
Tighten flanges as indicated in table T5.1.
Check compliance with the specifications in this
document.
Replace the gasket.
Check air supply to the actuator.
Check adjustment limits according to the actuator manual.
Check the valve: obstructions in the disc or malfunction
of the valve.
Add filtration equipment to the air supply input.
Change the solenoid valve and ask the technical
department about the most appropriate solenoid valve.
Moun-
PRIS-
CH-AIR ting
MA
kit
30708 35898 30720
30708 57497 30720
30708 57497 30720
30709 35905 30721
30709 35905 30721
30709 35909 30721
30710 35912 -
41872 35912 -
FAULT CLEARANCE
Moun-
ting
kit
35922
35923
35924
35925
35925
35926
-
-
11