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Page 11

6.  If a dewpoint sensor is fitted, disconnect the nut attached at outlet block [Fig B.4] and 

pull through the tubing, (maintain attachment to the sensor assembly). 

7.  Remove the black plastic conduit, if present, from the top of the dryer’s top manifold. 

8.  Remove the front door. Pins located inside on the left (The door will be unsupported 

once the top manifold is removed). 

9.  Undo the M12 retaining bolts from the top manifold. (8 bolts per column) 

10.  Remove the top manifold (care should be taken not to damage the sealing face). 

11.  Remove all of the column caps exposing the drying media. 

12.  Using a suitable vacuum cleaner, remove the expended dessicant media from each 

column. 

13.  Remove any contaminants from the columns internal surface. 

14.  Using a nano suitable snow storm filler, replace the dessicant media ensuring 

continuous filling is maintained. A gap of 30mm must be left free at the top of each 
column for the column cap [figure B.5]. 

15.  Install a new 150mm diameter media disc onto the 

top of the dessicant fill and fit column caps. 

16.  New column top caps must be installed. (Caps 

should stand approx.2mm above column length).   

17.  Clean top manifold and replace all gaskets (use a 

suitable grease to hold gaskets into place). 

18.  Ensure all column sealing faces are clean and free 

from dust. 

19.  Reassemble the dryer by replacing the top manifold 

ensuring it is lined up correctly with the columns, 
using Guide Pins (see parts list). Insert all M12 bolts 
and torque to a setting of 80Nm following the 
correct tightening sequence on page 19-20. 

20.  Refit the door. 

21.  Refit the black plastic conduit to the top of the 

manifold and re-connect the 4 x plastic 6mm 
tube to the exhaust valves and control solenoid 
valves. (If E.S. is fitted re-connect the 4mm clear 
tube). 

22.  Re-connect the outlet manifold connection using 4 x 

M10 bolts. 

23.  Replace the top cover. 

24.  Start up the Dryer (see page 8)

30mm

2mm

Figure B.4;
Disconnect nut to release 

dewpoint sensor tube

Figure B.5

Summary of Contents for NDL-2110

Page 1: ...Maintenance Service Manual heatless desiccant air dryer revision 2021 224 document 17 100 0141 www n psi co uk...

Page 2: ...s document contact nano purification solutions limited before proceeding Read this document carefully before attempting to service the dryer General Safety For your own safety when carrying out mainte...

Page 3: ...no purification solutions inc Mommenpesch 46 D 47839 Krefeld Germany telephone 49 2151 4828 418 internet www n psi de email sales n psi de CONTENTS 1 SERVICE INTERVALS 4 1 1 SERVICE KITS 5 2 PRODUCT A...

Page 4: ...encers mufflers Applicable on all models Service B Every 2 years Replace desiccant and top cap filtration Replace top manifold gasket seals Replace exhaust valves Replace inlet valves Replace outlet v...

Page 5: ...dge and gaskets 40 110 S 2120 NDK 120 x2 40 110 S 2130 NDK 130 x2 40 110 S 3130 NDK 130 x3 40 110 S 4130 NDK 130 x4 40 110 S 6120 NDK 120 x6 40 110 S 6130 NDK 130 x6 40 110 L 2110 NDA 110 LDP x2 Low p...

Page 6: ...n valves Service C OVERHALL KITS 40 O 0000 Q NOKO 6130 024 PVKO 6130 024 EVK 6130 IVK 6130 OVK 6130 40 O 0000 S NOKO 6130 240 PVKO 6130 240 EVK 6130 IVK 6130 OVK 6130 40 O 0000 R NOKO 6130 110 PVKO 61...

Page 7: ...odel shown is an NDL 6130 Column Inlet Manifold Bottom Manifold Dryer Legs Bottom Cover Outlet Assembly Top Manifold Shroud Exhaust Manifold PLC Display Unit Purge Block Top Cover 2 PRODUCT ASSEMBLY E...

Page 8: ...hausts and is completely depressurised When fully depressurised the clicking of the exhaust valves will be heard but no air exhausted If Energy Saving enables you may need to power down the dryer wait...

Page 9: ...ve Exhaust Silencer Mufflers from the unit and discard figure A 1 3 Clean the thread and remove any sealing material debris from external exhaust elbow figure A 3 4 Apply new thread sealing material t...

Page 10: ...siccant change Every 2 years or 12 000 hours Figure B Model Shown NDL 4130 Figure B 1 REPLACING DESICCANT CONTENTS 1 Ensure the dryer is shut down and fully depressurised See Page 8 section 4 1 2 Remo...

Page 11: ...ee at the top of each column for the column cap figure B 5 15 Install a new 150mm diameter media disc onto the top of the dessicant fill and fit column caps 16 New column top caps must be installed Ca...

Page 12: ...the flow direction arrow is pointing as shown and the valve ridge details cover the spill port See figures C 1 1 and C 1 2 6 Reassemble valve block to the bottom manifold torque setting 40Nm Refer to...

Page 13: ...10 bolts holding the outlet flange 4 Remove the non return valve from the valve orifice within the top manifold and discard 5 Lightly grease and insert the new non return valves into the valve orifice...

Page 14: ...and insert the valves into the orifices within the bottom manifold ensuring the flow direction arrow is pointing as shown and the valve ridge details Fig C 3 1 cover the spill port See figure C 3 2 5...

Page 15: ...fully depressurised See page 8 section 4 1 2 Disconnect and note configuration of the tubing cables and variation between the pilot valves Normally Open and or Normally Closed 3 Remove the 4 screws t...

Page 16: ...and bottom of the shroud to open it See Figure D 1 1 4 Remove the screw from the sensor plug Figure D 2 and detach it from the dew point sensor assembly See Figure D 2 1 Figure D 1 TOP COVER SCREWS P...

Page 17: ...urfaces are clean See Figure D 3 2 7 Reattach the new or re calibrated dew point sensor and sensor block assembly to the controller chassis plate using the 2x fixing screws 8 Replace the sensor plug a...

Page 18: ...the dryer is on and running see dryer start up procedure on page 8 2 Place a magnet over the controller reset area shown for 8 10 seconds until the dryer re sets 3 Once re set the hours run counter w...

Page 19: ...MODEL S NDL 3130 MODEL S NDL 4130 29 23 5 13 22 15 8 8 7 16 32 13 21 5 5 14 15 24 27 17 3 11 20 10 1 1 1 10 26 11 19 3 3 12 9 18 25 19 2 9 18 12 4 4 4 12 28 9 17 2 2 10 11 20 31 21 7 16 24 14 6 6 6 1...

Page 20: ...E BLOCK TIGHTENING SEQUENCES MODEL S NDL 6120 NDL 6130 ALL MODELS 23 22 20 17 15 10 11 13 5 3 19 33 28 43 2 18 36 26 42 7 21 24 39 38 30 32 8 1 4 6 14 12 41 25 35 9 44 27 34 16 48 46 31 29 37 40 45 47...

Page 21: ...oint is not achieved the dewpoint reading on the display will alternate with dewpoint alarm every 5 seconds The no volt alarm will also activate Contact the distributor service department and request...

Page 22: ...ctly if there is power to the coil replace valve A correctly working valve outputs an audible click when it energises 12 Check inlet air supply Failure of dryer to cycle 13 Failure to initialise dryer...

Page 23: ...he following table allows the customer to document the service history of the product and to make notes related to each service DRYER SERVICE RECORD PRODUCT CODE PRODUCT SERIAL NO SERVICE TYPE A B C D...

Page 24: ...2182 support n psi com www n psi com nano purification solutions st catharines ontario canada tel 1 905 684 6266 support n psi com www n psi com nano purification solutions new bethlehem pennsylvania...

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