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nano 

 

pg. 19 

 

Troubleshooting 

 

The following section briefly discusses the various faults that can occur in the 
dryer, the reason of the fault and how it can be rectified. If you do not find 

the solution to your problem, contact your nano representative or the 

factory. All necessary safety and precautionary steps must be followed before 
attempting to perform any of the recommended measures to resolve any 

faults in the air dryer.  
Before any attempt is made to undertake any action, the machine must be 

shut down. Follow the shut down procedures.

 

 

1.

 

Depressurize the unit 

2.

 

Check to make sure if the unit has been damaged externally or if any 
part is missing. 

3.

 

Check if there is proper power supply and if it corresponds to that 
mentioned on the data plate. 

4.

 

Check to see if there is power at all the electrical connections in the 

machine and if it’s the required amount

5.

 

Check if control air is available for all pneumatically operated 

components. 

6.

 

Make sure all shut-off valves are in the correct position. 

7.

 

Check the air flow, inlet temperature and pressure and make sure it 

falls within the operating range. 

 

Problem/Reaction 

of the Unit 

Possible Cause 

Measure to be taken 

 

 
 

 
 

 

 
 

 
High dew point 

  

  
  

  
  

  

  
  

High inlet air flow. 

Reduce inlet air flow. 

Inlet air temperature 
above design spec. 

Reduce inlet air 
temperature to design 

spec. 

Poor pre-filtration. 

Check pre-filter element. 

Inlet air pressure 
below design spec. 

Increase pressure to the 
dryer. 

Desiccant 

contaminated. 

Replace desiccant. 

Purge flow shut off or 

not properly adjusted. 

Set purge flow to correct 
setting using purge 

adjustment valve. 

Back pressure in 
regenerating 

chambers. 

Mufflers are clogged, 

install new mufflers. 

Re-pressurization valve 
not closing or leaking. 

Clean and re-pack valve. 

Summary of Contents for NBP Series

Page 1: ...nano pg 1 OPERATION MANUAL NBP SERIES EXTERNALLY HEATED BLOWER PURGE nano purification solutions 5509 David Cox Road Charlotte NC 28269 Tel 704 897 2182 Fax 704 897 2183 Web www n psi com...

Page 2: ...sponding drawings We strongly suggest that all personnel involved with the machine read the entire contents of the manual before proceeding with the installation or maintenance activities Dryer Type H...

Page 3: ...risk of electric shock and only authorized personnel with proper gear must approach it High Noise Area All personnel are required to wear ear protectors before approaching the vicinity of the equipmen...

Page 4: ...ed with the installation operation and maintenance of the equipment 6 Before performing any maintenance operations on the equipment the unit must be halted and completely depressurized 7 To ensure com...

Page 5: ...ut down put up warning notice to prevent the unit from being switched ON accidentally 6 Inspect all piping hoses and connections Make sure that all hoses are in good condition and are rated for the co...

Page 6: ...ernal shipping damage 1 Make sure you have received all the crates packages that are indicated in the packing slip 2 Remove the crate and packaging 3 Inspect the unit for any internal damages If you n...

Page 7: ...e therefore lasting much longer Products that may come in contact with clean dry compressed air is virtually unaffected hence rejection rates are reduced nano regenerative desiccant air dryers dry com...

Page 8: ...ASME code Desiccant fill and drain ports for ease of desiccant replacement Structural steel frame complete with floor stand Reliable non lubricated air inlet valves equipped with standard position ind...

Page 9: ...g regenerated This hot low pressure ambient air is passed into the chamber being reactivated in a direction counter to drying circuit As it passes through the desiccant the hot air adsorbs all the moi...

Page 10: ...es 240 Regeneration Time in minutes 230 Re pressurization Time in minutes 10 Inlet and Outlet Size in Inches 6 FLG Purge line Connection 6 FLG Desiccant Type of Desiccant F 200 316 Size of Desiccant i...

Page 11: ...nano pg 11...

Page 12: ...r lifted by the attached piping Location Careful consideration should be given to the location of the dryer in order to assure optimum results Ensure that the load bearing weight of the floor is adequ...

Page 13: ...lator to prevent any possibility of fluidization of the desiccant bed When there is a sudden increase in the demand for compressed air downstream of the dryer a huge pressure drop develops and can aff...

Page 14: ...t an arrangement for removing trapped condensate Make sure that you do not apply any back pressure on this exhaust system Note It is mandatory that dryer be grounded Use of your plants frame as a grou...

Page 15: ...AND BYPASS VALVES MAKE CERTAIN THE OUTLET BLOCK VALVE IS CLOSED AND THE BYPASS VALVE IS OPEN THE INLET BLOCK VALVE SHOULD BE OPEN ALWAYS OPEN VALVES SLOWLY 6 SLOWLY PRESSURIZE THE DRYER VESSELS TO OPE...

Page 16: ...NUMBERS 13 HEATER TEMPERATURE CONTROLS ARE ALL FACTORY SET AND NOT ADJUSTABLE 14 THE DRYER CYCLE TIME IS 4 HOURS DRYING 3 HOURS HEATING 50 MINUTES COOLING 10 MINUTES REPRESSURIZATION Shut down proced...

Page 17: ...flow Maintenance Prior to performing any maintenance on the dryer all personnel are strongly advised to familiarize themselves with the equipment by reading the entire contents of this operation manu...

Page 18: ...s Knock out excess particulate and back flow with dry compressed air If particulate cannot be removed completely change the exhaust mufflers 4 Check desiccant condition Powder in the mufflers is an in...

Page 19: ...e if there is power at all the electrical connections in the machine and if it s the required amount 5 Check if control air is available for all pneumatically operated components 6 Make sure all shut...

Page 20: ...inlet flow velocities due to high flow Dryer fails to switch towers Inlet valve not operating Check for pilot air signal No input power Check to assure that dryer is being on with correct voltage Exha...

Page 21: ...eplace with larger pipe if required Check valve leakage Clean repair or replace Note To test outlet check valves by pass and depressurize dryer shut off purge adjustment valve pressurize outlet to the...

Page 22: ...er obligations on the part of nano Warranty claims must be submitted and shall be processed in accordance with nano s established warranty claim procedure In no event will nano be liable for business...

Page 23: ...______________________________________ ADDRESS ____________________________________________ CITY ________________________ STATE ________________ ZIP ________________ TELEPHONE _____________________ FA...

Page 24: ...pg 24...

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