SM-P00077-A/3
4. MAINTENANCE AND INSPECTION
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2020-04-15
4.2
Disassembling and Assembling
WARNING
Thoroughly read and understand this Instruction Manual before working on disassembly or
assembly of the manifold.
• The product must be handled by a person who understands the structure and operation
principle of solenoid valve and has knowledge to secure the safety.
• A level of 2nd grade (or higher) Certified Skilled Professional of Pneumatic Apparatus
Assembling is required.
Turn off the power and release the pressure before adding or removing a manifold valve.
Do not disassemble or reassemble the inside of the solenoid valve.
• Disassembling and reassembling the inside of the solenoid valve will impair the sealing
performance.
• Disassembling and reassembling the solenoid valve will void the warranty.
4.2.1
Replacement of solenoid valve
When replacing the solenoid valve, use extreme care so that the gasket and pilot check valve do not fall
off.
Model
Screw size
Tightening torque (N·m)
4G1 R
M1.7
0.18 to 0.22
4G2 R
M2.5
0.35 to 0.40
4G3 R
M3
0.6 to 0.7
4.2.2
How to replace a coil assembly
A DIN terminal box type valve is compatible with only a DIN terminal box coil assembly. A coil assembly
for other electrical connection type cannot be used on a DIN terminal box type valve.
1
Remove two mounting screws securing the coil assembly and remove the old coil assembly.
Loosening other screws may cause operation faults.
2
Check the replacement coil assembly to make sure that the gasket is installed on the coil assembly
side.
3
Attach the replacement coil assembly and tighten the mounting screws.
Improper tightening torque may cause air leakage or operation faults.
Recommended tightening torque: 0.15 N·m to 0.19 N·m
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Grommet lead wire, E-type connector coil assembly
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DIN terminal box coil assembly
Mounting screw
Coil assembly
Coil assembly
Mounting screw
