3S MP 100 - Maintenance; Regular Inspection Schedule; Replacing Pilot Relay Unit

28
9. Maintenance
Carry out regular inspections for maintenance based on Regular Inspection Manual table.
They can be different for different circumstances. Making your own Regular Inspection Manual is
recommended.
・For maintenance of Flame-proof type Equipment, see “ANNEX1”.
－Regular Inspection Manual－
Check point
Interval of
Inspection
(
year
)
Details
Pressure gauge
2
Damage, Discrepancy
Fixed orifice ASS’Y
1
Clogging of fixed orifice
Transmission pin, Lever
2
Signs
of
wear
Pilot relay
unit
1
Operating
Terminals
Loose connection
Note1. Dismantling / reassembling main body cover, sensor, torque motor, terminal box is
prohibited, because its Flame-proof function or performance may be damaged.
When direction changing of the main body cover, it is taken care the clearance of Flame-
proof sufficiently.
Note2. ① Dismantling the Pilot Relay Unit can harm the performance. It is prohibited.
② Be sure to replace pilot relay unit regularly. Keep extra pilot relay unit.
※Considering operation frequency, closing and opening speed (reciprocating motion),
ambient temperature and replace the parts flexibly
9-1. Replacing Pilot Relay Unit
Before replacement work, be sure to shut off the supply air and make sure there
is no residual pressure.
Removal
① Remove the pilot case cover after loosen the three M5 Phillips screws.
② Remove the used pilot relay unit after loosening the four M4 Phillips screws.