NANO NBP Series User manual

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OPERATION MANUAL
NBP SERIES
EXTERNALLY HEATED
BLOWER PURGE
nano purification solutions
5509 David Cox Road
Charlotte, NC 28269
Tel: [phone]
Fax: [phone]
Web:www.n-psi.com

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EXTERNALLY HEATED REGENERATIVE AIR DRYERS
OPERATION MANUAL
Introduction
Thank you for purchasing a nano Externally Heated Desiccant Air Dryer. You
are now the proud owner of one of the finest desiccant dryers in the market.
nano dryers are engineered and manufactured to provide you with many
years of trouble free service. To ensure that you get the get first class
service from this equipment, we recommend you take some time and read
the contents of this manual.
This manual contains all the information required for installing and
maintaining your new equipment. It also includes the safety procedures and
corresponding 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
Heated/Blower Purge
Dryer Model Number
NBP3000ES-SF
Dryer Serial Number
BPPJBBATC145
Dryer Year of Manufacture
OCT-2018
The manufacturer reserves the right to make changes without any prior
notification and is not obligated in any manner. Information in this manual is
deemed current at the time of publication and nano disclaims all liability for
any errors resulting in any loss or damage.
If you have questions or need additional copies or would like to schedule a
nano serviceman visit, contact your local distributor.
nano purification solutions
5509 David Cox Road
Charlotte, NC 28269
Tel: [phone]
Fax: [phone]

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Safety Instructions
Safety symbols used in the manual
This represents Important Information. Readers of the manual must
pay extra attention to instructions and information succeeding this symbol.
This is a Warning symbol. It indicates that it is dangerous and could
result in physical injury and death if the instructions are not followed
correctly.
Electrical Danger High Voltage symbol. This means that there is a 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 equipment
Hazardous Fumes and gases –Personnel must wear protective gear
to prevent inhaling of the gases and fumes
Suspension points –look for these symbols before making any
attempt to move or relocate your equipment
This represents valuable tips and suggestions. Following these tips
can make your work easier
This indicates that there might be possible risk of material damage
and personnel are advised to exercise extra caution

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General Safety Instructions
What you must do:
1. Certified/authorized electricians must perform electrical work.
2. Electrical work must conform to the specifications indicated by nano
and the local state laws and Power Company.
3. Personnel must wear appropriate safety gear before working on any
electrical or mechanical aspects of the machine.
4. Appropriate tools have to be used for all installation and maintenance
work. If special tools are required and are not available to the
installation crew, contact the factory or your nano representative.
5. A copy of the Operation Manual must be made available to all
personnel involved 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 compatibility and continued trouble-free operation, only
genuine nano parts must be used.
What you must not do:
1. Do not make constructional changes to the unit. Only nano or
its authorized representatives with the prior approval can
perform any constructional work on the machine.
2. Do not use foreign parts. For any reason if you wish to use non-
original parts, you are required to contact the factory for approval.
3. Compressed air from the dryers is not to be used for breathing
purposes –install a breathing air package to ensure conformance with
OSHA regulations
4. Do not disable or disengage any protective equipment used on the
machine.

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Safe operating procedures:
1. Pressurize and depressurize compressed air SLOWLY! Always open air
valves slowly when pressurizing the air line system or equipment.
Replace air slowly when depressurizing your air system or equipment.
2. Circuit breakers, fusible disconnects, and wiring should conform to
national and/or local electrical codes. Make certain that the
electrical installation for this unit is performed by qualified
electrical personnel.
3. Only use original fuses for the rated voltage and current.
4. Shut down the unit in the correct recommended procedure.
Depressurize the unit and remove all electrical connections.
5. After shut 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 correct working
pressure. Do not allow hoses to come into contact with oil,
chemicals, or sharp objects.
7. Secure condensate drain lines. Unsecured flexible drain lines
may whip violently under pressure and may cause bodily harm.
nano air dryers do not remove carbon monoxide and is not safe for human
respiration (breathing). Breathing air must be at least grade D quality as
described in compressed air and gas association (CAGI) commodity
specifications 67.1-1966. User may refer to OSHA 29 CFI 1910.134 for
special precautions and equipment suitable for breathing air applications.
nano disclaims any liability what so ever for loss, injury or damage.

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Unpacking and Inspection:
All nano dryers are tested and operated before shipment. However, during
shipment it can get damaged or certain parts might come loose. To ensure
you have a smooth installation we recommend –
Immediately upon receipt of the unit, check carefully for external
damage that may have occurred in shipping. In the event of any
damage, immediately file a claim with the carrier and notify your
nano Distributor or the factory (704-897-2182) of the nature of the
damage. The carrier is legally responsible for all damages.
After you are assured that the unit has not sustained any external 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 notice anything,
follow the same procedure as above and notify the shipping agency
and factory.
4. Check the nano nameplate and make sure that it is the correct model
that you had ordered.
5. Note the equipment capacity and power supply requirements and
ensure that they are in accordance with your specifications. The rated
conditions of the dryer are indicated on the data plate. If you notice
any discrepancy, contact the nano representative or the factory at
[phone].
Vibration during shipping can loosen the connections. So inspect all pipe and
tubing and make sure they are all tightened and secured.

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Product Description
Why we need compressed air dryers
Untreated compressed air contains many contaminants such as water,
compressor oil, pipe scale and contamination from ambient air. All
these contaminants cause excessive corrosion, erosion, freezing and
product contamination to all components that come in contact with
the untreated compressed air. A regenerative type dryer system with all
recommended filtration will remove these contaminants to harmless levels.
The end result is that instruments that come in contact with the dry
compressed air stay clean and do not corrode, 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 compressed air to -40°F below PDP
(pressure dew point). The compressed air stream is passed through a desiccant
bed, which removes the moisture through the process of adsorption. Twin
towers filled with the desiccant alternate between drying and regeneration
either based on dew point or a fixed time cycle. nano® manufactures various
types of desiccant air/gas dryers. These dryers offer fail-safe design in the
event of power interruption, along with tower operating status lights and the
highest quality non-lubricated air/gas inlet valves that ensure reliable
operation for many years to come.

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Standard Features:
•Optimal tower size for low velocities, high contact time and minimal
desiccant fluidization.
•Tower pressure relief valves.
•Purge adjustment valve to control purge flow.
•Purge flow indicator indicates rate.
•Purge exhaust mufflers for quiet operation.
•Tower pressure gauges.
•Stainless steel desiccant supports and air diffusers to prevent
channeling.
•Counter-current reactivation.
•Advanced PLC controls.
•Controlled repressurization.
•Fail safe design: failure of power and/or pilot air causes the purge
exhaust valves to close.
•Control pilot air filter.
•Desiccant towers are designed and fabricated according to 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 indicator.
•Angle seat design of these valves allows for high flow rate with
minimal obstructions. High quality soft seat check valves.
•Tower operating status lights.
•ON/OFF switch and power ON light.
•Failure to shift alarm.
•Tower and heater insulation.
•Oversized heater for better dew point.
Optional Features:
•NEMA 4/12 electrical construction.
•NEMA 7 (Explosion Proof) electrical construction.
•-65°F pressure dew point.
•Failure to shift alarm.
•High inlet temperature alarm.
•Dew point monitor.
•Demand cycle control with dew point monitor.
•Pre-piped filters and by-pass valve package.
•Visual moisture indicator.
•High inlet pressure up to 5000 psig.

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Technical Specifications
How does it work?
Fully automatic, dual-tower externally heated desiccant dryers continuously
adsorb water vapor from compressed air. The air is dried as it passes
through the desiccant bed of one tower while the bed in a second tower is
being reactivated. Reactivation of the saturated desiccant is accomplished
with the use of heat and ambient air. NBP Series have a desiccant bed which
is reactivated by injecting atmospheric air via a blower through the external
heater then into the tower being 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
moisture from the surface of the desiccant and is vented into the
atmosphere. Dryer operation is performed automatically on a solid state
timing module or PLC. To prevent line surge and to minimize desiccant
attrition, switching from one chamber to the other is carried out only when
both desiccant chambers are at equal pressure. The tower being reactivated
will be re-pressurized at the end of its reactivation cycle before switch-over
takes place. Purge flow and depressurization are in an upward direction,
counter to the drying flow.

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Design parameters of the Dryer:
Type of Dryer: Externally Heated Blower purge
Model Number: NBP-3000-SF
Power Supply: 460-3-60
Pressure vessel:
Rated Pressure in PSIG:100 psig
Design Pressure in PSIG:200 psig
MIN Temperature in Deg. -20F
MAX Temperature in Deg. 400F
Timer Setting:
Adsorption Time in minutes: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 in inches:3/16”
Chemical composition: Activated Alumina
Parameter Description
Optimum
Maximum
Minimum
Air Flow in SCFM
3000
3500
500
Air Pressure in PSIG
100
125
80
Air Inlet Temperature in Degrees
F
90
120
35
Ambient Temperature in Degrees
F
70
120
35
Purge Air Flow in SCFM (dry air
cooling) Average
210
400
100

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Pre-requisites for Installation:
To ensure a safe and smooth installation, we recommend you go through the
steps indicated below:
•Make sure that all personnel involved have read this operation
manual thoroughly. If you have any questions, feel free to
contact your nano representative or the factory and we will be
glad to assist you. If you need help with the installation and
commissioning, we will be glad to schedule a factory serviceman to
visit your site and perform the entire process of installation for a
nominal fee.
•Have extra copies of the operation manual –you can print it directly
from this program.
•Special care must be taken while transporting the unit to the
installation site.
•Dryer must not be moved or 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 adequate for the weight of the dryer.
•The dryer should be located in an open area and a level ground. Dryer
can be bolted to the floor to eliminate vibrations.
•The ambient temperature should be between 40 Deg.F and 100 Deg.F.
Low temperature could affect the dryer process and result in high
outlet dew point.
•In conditions where the ambient drops below freezing, nano
recommends the use of heat trace for the equipment. For a nominal
price, this feature will ensure that you have trouble free operation
during the winter months (the dewpoint of the outlet air will be
consistent)
•Dryer and accompanying filters should be installed with at least 2~5
feet clearance from the adjoining walls to provide easy access for
routine maintenance.

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Installation Procedure
Only Qualified personnel should make electrical and mechanical connections.
Foundation:
Dryer should be mounted on a suitably structured flat and level floor
or base that is free from vibration. Special care must be used when
lifting the dryer to prevent tip-over
Mounting:
Bolt dryer to the foundation using the boltholes provided in the frame.
Piping:
Connect the inlet of the dryer to the moist gas from the
compressor/receiver/inlet filter. Install the inlet piping and the inlet
shutoff valve. Install the Outlet piping and the outlet shutoff valve (a
union with a valve by-pass can be installed at the inlet and outlet
valves to accommodate isolation of the dryer for maintenance).
Compressed air piping has to be at least the same size as that of the inlet
and outlet connections of the dryer. Larger pipe sizes can be used with
reducers.
Back Pressure regulators:
Install backpressure regulator 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 affect the performance of the life of the dryer and the drying material
(desiccant).
Desiccant:
Make sure that the dryer towers are filled with desiccant. Larger dryers may
have desiccant shipped separately –in which case, the media has to be filled
into the pressure vessels from the desiccant fill ports. Care must be taken
when filling the media and it must be done gradually to prevent powdering.
Muffler:
In the event that mufflers have been shipped loose, they must be installed
and secured
By-pass:
If the dryer is not supplied with optional block and by-pass valve system it is
highly recommended that a block and by-pass valve system be installed
around the dryer and filters. This block and by-pass valve system will permit
the dryer and filters to be removed from the compressed air system for
servicing without shutting down the entire compressed air system. Ensure that
the bypass valves are rated for more than 250 Deg. F.

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Electrical:
Make all electrical connections to the dryer as shown on the wiring diagram.
Special care must be taken in connecting the proper voltage as indicated on
the specification sheet and wiring schematic.
Exhaust:
If you intend to vent your exhaust with additional piping, the discharge
piping from the exhaust should not be piped upward without 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 ground may cause problems with the control.
A fused disconnect is not supplied with this equipment therefore one must be
supplied by customer. All electrical fuses, breakers, etc. should be correctly
sized .
nano is not liable for any code violations; component damage, downtime or
consequential damage related to customer supplied electrical components
and connections.

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Equipment for Installation
This dryer does not need any special tools for installation.
Start-up procedure
At any point during the process of startup or shutdown, if you notice
anything unusual; we recommend you refer to the operation manual
immediately. If you cannot find the answer in the troubleshooting section,
contact your nano representative or the factory at once.
(NOTE: REFER TO THE ELECTRICAL, FLOW & MECHANICAL DWGS AND
PANELVIEW DISPLAY SCREEN LAYOUT)
1. MAKE CERTAIN THE CORRECT VOLTAGE IS SUPPLIED TO THE
DRYER.
2. MAKE CERTAIN AIR INLET AND AIR OUTLET ARE PIPED
CORRECTLY.
3. THE DRYER OFF/ON SWITCH INITIALLY SHOULD BE IN THE OFF
POSITION
4. MAKE CERTAIN THE INLET COALESCING PREFILTER DRAIN
ISOLATION MANUAL VALVE IS OPEN.
5. IF THERE ARE BLOCK 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 OPERATING
PRESSURE, ONE DRYER VESSEL WILL PRESSURIZE SLOWER
THAN THE OTHER. IF THE OTHER VESSEL DOES NOT
PRESSURIZE
OPEN THE PURGE ADJUSTMENT VALVE TO PRESSURIZE.
7. MAKE CERTAIN THE CONTROL AIR PRESSURE IS SET FOR
100 PSIG. ADJUST VIA THE CONTROL AIR PRESSURE
REGULATOR
LOCATED AT FRONT OR REAR OF DRYER.
8. THE DRYER CAN NOW BE TURNED ON VIA THE POWER OFF/ON
SWITCH.
9. AFTER DRYER IS ON AND OPERATING ONE TOWER WILL SOON
DEPRESSURIZE TO ATMOSPHERIC PRESSURE. THE PURGE
ADJUSTMENT VALVE CAN NOW BE ADJUSTED TO 60-65 PSIG
READ ON THE PURGE PRESSURE GAUGE. INCREASE OR
DECREASE PURGE PRESSURE VIA PURGE ADJUSTMENT VALVE.
10. NOW OPEN THE OUTLET BLOCK VALVE SLOWLY. THEN CLOSE
THE BYPASS VALVE. THE AIR WILL NOW FLOW THROUGH THE
DRYER THEN TO THE CUSTOMER PROCESS AIR SYSTEM.

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(CONTINUED NEXT PAGE)
11. WHEN UNIT IS IN OPERATION THE PANELVIEW DISPLAY ON THE
ENCLOSURE DOOR WILL SHOW THE DRYER STATUS AND
ANY ALARM CONDITIONS.
12. WHEN AN ALARM CONDITION IS ACTIVE THE PANELVIEW
DISPLAY WILL DISPLAY THE ALARM CONDTION ACTIVE, ALSO THE
COMMON ALARM LIGHT WILL BE ON WHEN AN ALARM IS ACTIVE
AND THE COMMON ALARM RELAY INSIDE THE ENCLOSURE WILL DE-
ENERGIZE. AFTER PROBLEM HAS BEEN CORRECTED THE ALARM
CONDITION WILL RESET AUTOMATICALLY.
(NOTE: A SET OF DRY COMMON ALARM CONTACTS FOR REMOTE
INDICATION ARE AVAILABLE INSIDE THE ENCLOSURE SEE
ELECTRICAL DWG. FOR TERMINAL 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 procedure
Note: this type of dryer operates best if left on whenever possible with air
supplied to the unit.
The unit can be left pressurized after the dryer is switched off.
If the dryer needs to be turned off and depressurized, do the
following:
1. Slowly OPEN the by-pass valve.
2. Slowly CLOSE the Inlet and outlet "shut-off” valves.
3. Slowly open the purge exhaust valves and the dryer system starts to
depressurize. Switch off electrical power after both towers have been
depressurized.(The Dryer can also be depressurized through the valve
on the After Filter drain and through the Inlet Filter drain.)

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Operating procedure
After the initial startup, the dryer operation is completely automatic. To
understand the details of the operation, we recommend you use the flow
diagram and the timing sequence of the dryer.
Fully automatic, dual-tower externally heated desiccant dryers continuously
adsorbs water vapor from compressed air. The air is dried as it passes
through the desiccant bed of one tower while the bed in a second tower is
being reactivated. Reactivation of the saturated desiccant is accomplished
with the use of heat and atmospheric air via a blower. Dryer operation is
performed automatically on a solid state timing module or PLC. In order to
prevent line surge and to minimize desiccant attrition, switching from one
chamber to the other is carried out only when both desiccant chambers are
at equal pressure. The tower being reactivated will be re-pressurized at the
end of its reactivation cycle before switch-over takes place. Purge flow and
depressurization are in an upward direction, counter to the drying 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 manual. nano strongly recommends
the strict adherence of all the safety procedures prior to any
performing any maintenance activity on the dryer.
A. The pressure differential indicator referred to as the “Delta-P” is a very
good indicator of the state of the filter elements. Maintenance
personnel must pay attention to these to keep the dryer running with
full efficiency.
B. The useful life of a filter element depends on the quality of air.
C. Powdered desiccant can accumulate in the muffler and increase the
backpressure in the regenerating tower.
D. Oil and oil vapor can drastically reduce the life of the desiccant. Take
precautions to eliminate all traces of oil from the airflow
Weekly checklist:
1. Check all drain valves, prefilter, after filter and separators.
2. Check the pressure differential indicators (Delta-P) on the pre-filter
and afterfilter.
3. Check all control panel lights.
4. Verify purge flow indicator. The purge flow depends on the set
dewpoint (PDP)
5. Check the dewpoint monitor to ensure that the dewpoint is being
achieved.

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Semi-annual checklist:
1. Remove and inspect all filters for excessive particulate loading and
physical damage –if required replace prefilters, afterfilters, pilot air
filter and mufflers
2. Check pressure differential indicator and if it turns red, replace the
element.
3. Remove exhaust mufflers. 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 indication of
the status of the desiccant
5. Check all solenoid valves –check valve seating, coil condition and
control circuit
Annual checklist:
1. Replace prefilters, afterfilters, pilot air filter and mufflers.
2. Recalibrate dew point analyzer probe and monitor and send back to
factory for recalibration.

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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.

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High dew point
Exhaust valve(s) not
fully opening or
closing.
Clean and re-pack exhaust
valve(s).
Outlet check valve
leaking.
Clean and re-pack check
valve.
Purge check valves
leaking.
Clean and re-pack both
check valves.
Low heater
temperature or heater
not working.
Check heater temperature
controller adjust if
necessary.
Check thermocouples.
Check PLC.
Checks fuses
High-pressure drop
High inlet flow rate.
Reduce inlet flow rate to
meet dryer spec.
Inlet prefilter dirty.
Inspect and replace as
needed.
Low inlet pressure.
Increase inlet pressure to
design pressure.
Desiccant dusting.
High 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.
Exhaust valves(s) not
functioning.
Check exhaust solenoid
valve.
Pilot air supply
restricted.
Check pilot filter, and pilot
tubing restriction.
Controller malfunction
Reset controller. If it does
not reset, replace.
Purge Failure
Purge flow control
valve or orifice clogged
Remove orifice and clean
Purge exhaust valve
fails to close
Check solenoid actuator,
purge exhaust valve and
control module
Purge muffler clogged
Remove and clean,
replace if necessary
Pressure switch failure
Rest or replace pressure
switch
Pressurization Failure
Repressurization failure
Check orifice, check valve
and regulator