EXPLOSION-PROOF ELECTROMAGNETIC PILOT MAINTENANCE INSTRUCTIONS

Nadi solenoid valves maintenance can be made with the following tools without disassembling the solenoid valve from the pipes.
TOOLS
1	Solenoid housing security clip extration tool (Cod. Art. KM/3062)
2	Flat screwdriver (max. 3x1)
3	Special fixed core wrench (Cod. Art. KM/2621)
4	Fixed core wrench lever-pin ( 8 mm dia.)
5	Setscrew wrench n. 2
6	Wrench n.2

Operation n. 1
Be sure to have been switched off the power-supply before to start with the following operations Unloose the security dowel using a n.2 setscrew wrench, turning anticlockwise.

Operation n. 2
Unscrew the solenoid housing threaded cap turning anticlockwise.

Operation n. 3
Insert the clip extraction tools in the hole of the solenoid housing security clip and pull until clip is extracted.

Operation n. 4
Unloose the terminal board screw and pull-up the two power-supply wires. It is not necessary to unscrew the internal ground connecting wire.

Operation n. 5
If present, unloose the exagon nut with a n. 19 wrench turning anticlockwise. Unscrew completely the exagon nut by hand.

Operation n. 6
If operation n. 5 has been made made, extract carefully the o-ring.

Operation n. 7
Pull up the solenoid housing until completely extracted from the fixed core of the solenoid valve.

Operazione n. 8
Extract the coil from the housing, through the threaded hole, rounding it light.

Replace the coil and reassemble the pilot stepping back through the operation.