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Trouble
Abnormal sound is
heard.
External leakage is
observed.
8.5 Disassembly (See "9. Exploded Drawing" on Page 16.)
1. Loosen the nut (nominal size: 19 mm) on the top of the coil and remove the coil.
Pay attention not to lose the small parts such as washers and O-ring.
2. Loosen the bolts by 2 to 3 mm and check that no residual pressure is detected.
■ Nominal size of bolt
Nominal size of the product
Nominal size of bolt
3. Remove the bolts. Remove the cover complete set and kick spring, then remove the
diaphragm complete set. Pay attention not to lose the kick spring.
4. Pay attention not to have the disassembled parts damaged, deformed or lost.
8.6 Reassembly (See "9. Exploded Drawing" on Page 16.)
Reassemble the product in reverse order of disassembly with paying attention to the following
events.
1. Installation of the diaphragm complete set to the cover complete set.
Insert the diaphragm complete set with the kick spring to the cover complete set.
Diaphragm complete set
Cause
1. Nut clamping the coil is
loosened.
2. Foreign substances exist on the
internal surface of the pipe or at
the top surface of plunger assy.
3. Fluid pressure exceeds the
specified working pressure.
4. Voltage applied to the coil is not
proper.
1. Pipe is loosened.
2. The bolt is loosened.
3. The diaphragm is damaged.
10-20A
10 mm
Cover complete set
Kick spring
1. Retighten the nut with the specified
torque 15N ・ m.
2. Disassemble the product and remove
foreign substances.
If the foreign substances cannot be
removed, replace the cover complete set
and diaphragm complete set with new
ones.
3. Adjust the fluid pressure to the
appropriate level.
4. Check the voltage.
1. Replace the cover complete set with a
new one.
2. Retighten it with the specified torque.
3. Replace the diaphragm complete set
with a new one.
25-32A
13 mm
15
Remedy
40-65A
17 mm
■ EPDT-266c ■
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