GENER
AL
INFO
SPECS
MOUNTING
ST
AR
T UP
OPER
ATION
M
AINTENANCE
DIMENSIONS
HO
W
TO
ORDER
LOGISTICS
73
NDX VALVE CONTROLLER
14.1
GENERAL
The maintenance requirements for the NDX valve controller
depend on the service conditions, for instance, the quality
of instrument air. Under normal service conditions there is
no requirement for regular maintenance.
WARNING
When maintaining the NDX, ensure that the
supply air is shut off and pressure is released.
NDX valve controller includes following interchangeable
modules:
•
Relay valve
•
Prestage unit
•
Local User Interface
•
Electronics module (including optional PT)
•
Pressure gauge block
•
Main cover
•
Relay cover
•
Prestage cover (NDX1510_ only)
•
Exhaust cover
•
Prestage bottom filter assembly
14.2
ORDERING SPARE PARTS
Use the following order codes for NDX1510_:
H137041 PRESTAGE UNIT ASSEMBLY (Part number: 100)
H137043 MAIN COVER ASSEMBLY (Part number: 15)
H137045 RELAY COVER ASSEMBLY (Part number: 37)
H137047 PRESTAGE UNIT COVER ASSEMBLY (Part number: 42)
H137059 RELAY VALVE ASSEMBLY (Part number: 140)
H137060 LUI MODULE (Part number: 207)
H149891 SILENCERS, IP COVER 3/8” NPT M10 WITH O RING
(Part number: 87)
H137258 PRESTAGE BOTTOM FILTER (Part number: 32)
H141371 PNEUMATIC SET
(includes H137041 and H137059 assembly)
ELECTRONICS MODULE: Contact Metso
Use the following order codes for NDX_511_:
H162178 RELAY COVER ASSEMBLY (Part number: 37)
H166049 RELAY VALVE ASSEMBLY for NDX1_ (Part number: 140)
H149515 RELAY VALVE ASSEMBLY for NDX2_ (Part number: 140)
H162063 PRESTAGE UNIT ASSEMBLY (Part number: 100)
H162064 MAIN COVER ASSEMBLY (Part number: 15)
H161999 SILENCERS IP COVER 3/8” NPT WITH ORING
(Part number: 87)
H149518 LUI MODULE (Part number: 207)
H162067 PNEUMATICS SET for NDX1511_
(includes H162063 and H166049)
H162068 PNEUMATICS SET for NDX2511_
(includes H162063 and H149515)
ELECTRONICS MODULE: Contact Metso
Use the following order codes for NDX_512_:
H137045 RELAY COVER ASSEMBLY (Part number: 37)
H137059 RELAY VALVE ASSEMBLY for NDX1_ (Part number: 140)
H149515 RELAY VALVE ASSEMBLY for NDX2_ (Part number: 140)
H149508 PRESTAGE UNIT ASSEMBLY (Part number: 100)
H149509 MAIN COVER ASSEMBLY (Part number: 15)
H149512 SILENCERS IP COVER 3/8” NPT WITH O RING
(Part number: 87)
H149518 LUI MODULE (Part number: 207)
H149527 PNEUMATIC SET for NDX1512_
(includes H149508 and H137059 assembly)
H149528 PNEUMATIC SET for NDX2512_
(includes H149508 and H149515 assembly)
ELECTRONICS MODULE: Contact Metso
14.3
REPLACING PARTS
14.3.1
Prestage
Prestage location:
•
NDX1510_
•
under prestage cover with prestage symbol (Fig. 74)
•
NDX_511_ and NDX_512_
•
under main cover and LUI module (Fig. 75)
© Metso 2015
- NDX valve controller
- Relay valve
- Prestage unit
- Local User Interface
- Printed circuit board module (including optional PT)
- Pressure gauge block
REPLACING NDX ON NELES GLOBE
Follow instructions in mounting chapter.
REPLACING SPARE PARTS
Prestage
Prestage is located under cover with following symbol:
Removal
WARNING: Risk of injury. Ensure that supply pressure is shut off and actuator pressure is released prior
to removal of the prestage.
WARNING: The prestage must be handled carefully. Never touch the moving parts on the prestage and
never rotate the nozzle. If the moving parts of the prestage are damaged, that may lead to reduced
control performance of the device.
NOTE: It is recommended to replace both the prestage and the relay valve at the same time.
NOTE: it is recommended to also replace the filter and seal below the prestage (included in the spare
parts kit)
- Disconnect power from the device
- Shut off
supply pressure and make sure that the actuator pressure is released
- Remove the device from the actuator mounting bracket if there is limited working space in front of the
prestage cover (Disconnect the supply and actuator piping if device is needed to remove).
- Loosen the prestage cover M4 screws (Torx T20, 4 pcs) and remove the prestage cover
Fig. 74 NDX1510_ prestage location.
Fig. 75 NDX_511_ and NDX_512_ prestage location.
14.3.2
Removal of prestage
WARNING
Risk of injury. Ensure that supply pressure is
shut off and actuator pressure is released prior
to removal of the prestage.
14 MAINTENANCE
M
AINTENANCE