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The Ingersoll Rand multiple module air dryer removes moisture, oil
vapor, and other contaminants from compressed air.  These
contaminants are detrimental to pneumatically operated appliances,
controls, instruments, machinery and tools.  This is accomplished by
cooling the air with a refrigeration unit to a temperature at which
moisture in the air is condensed and separated from the airstream.  The
temperature the air is cooled to, normally between 36 and 40°F, is

2

Nirvana Cycling Refrigerated Dryer Models 3250-8000

ingersollrandproducts.com

known as dew point.  This dryer can be easily installed into various
pneumatic systems in which dry air is required or desired.  Please refer
to Principles of Operation for complete operating details.

Ingersoll Rand recommends that this technical manual be thoroughly
reviewed prior to start up.

The Company warrants that the equipment manufactured by it and
delivered hereunder will be free of defects in material and workmanship
for a period of twelve months from the date of placing the Equipment in
operation or eighteen months from the date of shipment from the factory,
whichever shall first occur. The Purchaser shall be obligated to promptly
report any failure to conform to this warranty, in writing to the Company
in said period, whereupon the Company shall, at its option, correct such
nonconformity, by suitable repair to such equipment or, furnish a
replacement part F.O.B. point of shipment, provided the Purchaser has
stored, installed, maintained and operated such Equipment in
accordance with good industry practices and has complied with specific
recommendations of the Company. Accessories or equipment furnished
by the Company, but manufactured by others, shall carry whatever
warranty the manufacturers have conveyed to the Company and which
can be passed on to the Purchaser. The Company shall not be liable for
any repairs, replacements, or adjustments to the Equipment or any costs
of labor performed by the Purchaser or others without Company's prior
written approval.

The effects of corrosion, erosion and normal wear and tear are
specifically excluded. Performance warranties are limited to those
specifically stated within the Company's proposal. Unless responsibility
for meeting such performance warranties are limited to specified tests,
the Company's obligation shall be to correct in the manner and for the
period of time provided above.

THE COMPANY

MAKES NO OTHER WARRANTY

OR

REPRESENTATION OF ANY KIND WHATSOEVER, EXPRESSED OR
IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE, ARE HERBY DISCLAIMED.

Correction by the Company of nonconformities whether patent or latent,
in the manner and for the period of time provided above, shall constitute
fulfillment of all liabilities of the Company for such nonconformities
whether based on contract, warranty negligence, indemnity, strict liability
or otherwise with respect to or arising out of such Equipment.

The Purchaser shall not operate Equipment which is considered to be
defective, without first notifying the Company in writing of its intention to
do so. Any such use of Equipment will be at Purchaser's sole risk and
liability.

Note that this is Ingersoll Rand standard warranty. Any warranty in force
at the time of purchase of the equipment or negotiated as part of the
purchase order may take precedence over this warranty.

2.0 INTRODUCTION

3.0 WARRANTY

4.0 REFRIGERATED DRYER NOMENCLATURE

NOMINAL

*

FLOW

CONDENSER

PREFIX

(SCFM)      

TYPE            

POWER

RATING

NVC

3250-8000

A = AIR

4 = 460-3-60

1 = NEMA 1

W = WATER

6 = 575-3-60

H = NEMA 4

7 = 380-3-50

Nominal Flows indicated are for 100°F inlet temperature, 100°F ambient temperature and 100 psig compressed air pressure.

Summary of Contents for Nirvana 3250-8000

Page 1: ...nstructions Nirvana Cycling Refrigerated Dryer Models 3250 8000 Operator s Manual Manual Del Operador ES Manual do Operador PT Manuel De L opérateur FR Operator s Manual EN October 2012 PRINT LANGUAGE ENGLISH FRENCH PORTUGUESE SPANISH ...

Page 2: ...6 6 2 REMOTE Mode 7 6 6 3 MANUAL Mode 8 0 INSTALLATION AND INITIAL START UP 13 8 1 LOCATING EQUIPMENT 8 2 OFFLOADING LIFTING THE DRYER NVC4000 NVC19200 ONLY CONTENTS PAGE 8 3 INSTALLATION OF AIR PIPING 8 4 PIPING AND VALVES 8 5 FILTRATION 8 6 ELECTRICAL CONNECTION 8 7 PRE START UP AND SYSTEM LEAK CHECK 8 8 INITIAL START UP 8 9 GENERAL START UP 8 9 1 GENERAL START UP AUTO MODE LOCAL OPERATION 8 9 2...

Page 3: ... conveyed to the Company and which can be passed on to the Purchaser The Company shall not be liable for any repairs replacements or adjustments to the Equipment or any costs of labor performed by the Purchaser or others without Company s prior written approval The effects of corrosion erosion and normal wear and tear are specifically excluded Performance warranties are limited to those specifical...

Page 4: ...the EPA and local regulations 7 Do not operate the dryer at pressures in excess of its rating 8 Do not operate the dryer without guards shields and screen in place 9 Inspect unit daily to observe and correct any unsafe operating conditions OSHA Heading Descriptions A WARNING Warning is used to indicate a hazardous situation which has some probability of death or severe injury Warning should not be...

Page 5: ... Insurance Rating Affected READ TECHNICAL MANUAL Air Under Pressure Will Cause Injury Death Or Property Damage Relieve Press Before Servicing Condensate Drain Discharges Under Pressure Drain Requires Periodic Cleaning Service READ TECHNICAL MANUAL Removing fuses will not disconnect power from dryer Always disconnect power from ALL sources before performing service READ TECHNICAL MANUAL HIGH VOLTAG...

Page 6: ... it is changed from a low pressure liquid into a low pressure gas This gas enters the suction side of the compressor where it is compressed into a high pressure gas The high pressure gas is cooled in the air cooled or water cooled condenser section until it becomes a high pressure liquid It then goes to a liquid receiver and through a permanent filter dryer that ensures the refrigeration system is...

Page 7: ...6 Nirvana Cycling Refrigerated Dryer Models 3250 8000 ingersollrandproducts com 7 0 PRINCIPLES OF OPERATION PROCESS AND INSTRUMENTATION DIAGRAM NVC3250 AIR AND WATERCOOLED 550085 A ...

Page 8: ...7 0 PRINCIPLES OF OPERATION PROCESS AND INSTRUMENTATION DIAGRAM NVC4000 4800 AIR AND WATERCOOLED 550006 D ...

Page 9: ...8 Nirvana Cycling Refrigerated Dryer Models 3250 8000 ingersollrandproducts com 7 0 PRINCIPLES OF OPERATION PROCESS AND INSTRUMENTATION DIAGRAM NVC6000 AIR AND WATERCOOLED 550009 E ...

Page 10: ...7 0 PRINCIPLES OF OPERATION PROCESS AND INSTRUMENTATION DIAGRAM NVC8000 9600 WATERCOOLED 550027 E ...

Page 11: ... FIGURE 2 WATER REGULATING VALVE A NOTICE For conditions where low water temperature and or high water pressure are expected it is advisable to install a water pressure regulator ahead of the condenser A NOTICE Verify that there is an adequate volume of water for dryer demand 7 0 PRINCIPLES OF OPERATION 7 6 1 BASIC USER INTERFACE The Microprocessor Control display provides the user with the operat...

Page 12: ...ation These settings are as follows Chiller Temperature CHLLR TEMP 7 0 PRINCIPLES OF OPERATION 7 6 3 DRYER SET POINTS AND ALARMS The Microprocessor Controller permits adjustment of each module s Chiller Temperature set point This adjustment allows the user to configure the dryer to operate according to site conditions or to equalize run time of the compressors The controller is shipped from the fa...

Page 13: ...Microprocessor Control alarm routine will activate This alarm condition may cause damage to the dryer when subjected to continuous or long term exposure Note that once cleared the compressor will restart automatically However if two successive low pressure conditions are determined this alarm will shut down the dryer after a response time delay and will display the alarm condition The operator mus...

Page 14: ...ngineering Specifications Sheet for estimated weight of dryer prior to lifting To offload the dryer Install lifting chains through the eyes in the lifting lugs on headers If using two point lifting use a spreader bar not included as shown in Figure 3 Be sure that chains slings do not bear on sheet metal Adjust chains as required to keep equipment level during offloading Carefully raise dryer from ...

Page 15: ... accordance with national and local code requirements is recommended See unit specification sheet for voltage requirements and load data All Ingersoll Rand Nirvana Cycling Multiple Module dryers are equipped with module disconnects for safety during maintenance or repair With this Multidisconnect feature each individual module can be isolated from the power source by using its own dedicated switch...

Page 16: ... s refrigeration system will energize Observe operation 8 0 INSTALLATION AND INITIAL START UP The suction pressure display will typically pull down between 50 and 70 psig and the suction temperature reading will vary between 20 F and 40 F These will vary depending on the glycol temperature when operating While the glycol temperature is above 50 F the Microprocessor Control will indicate a high chi...

Page 17: ...essure reading will typically pull down between 50 and 70 psig After the alarm delay provided the Chiller Temperature is greater than the HIGH TEMPERATURE ALARM set point the dryer s modules will go into HIGH TEMPERATURE ALARM The LCD panel will indicate the alarm and the red Dryer Fault light on the Main Power Enclosure will illuminate The refrigeration system will continue to operate Pressing th...

Page 18: ...ERATION MAINTENANCE Filters manufactured to CEN EN286 1 are provided with a BSPP female connection 1 to fit a pressure relief valve if required GP HE DP models The filter elements should be replaced annually AC model Change element s after 1000 operating hours or earlier if oil odour vapour is detected Drains Manual drain models should be drained periodically Automatic drain models should be inspe...

Page 19: ...Y 8 or 0 2 4 12 hours AUTO RESTART ENABLE AUTO RESTART N or Y 10 1 ENTERING TECHNICIAN MODE A WARNING TECHNICIAN MODE should only be entered by qualified service personnel Altering the set points in TECHNICIAN MODE will have a significant effect on the operation of the dryer Incorrect set points may damage dryer and cause potential serious injury To enter the TECHNICIAN MODE perform the following ...

Page 20: ...ning non adjustable parameters may be viewed by depressing the SELECT DISPLAY button as required to arrive at the desired display A NOTICE To exit the TECHNICIAN MODE at any time depress the button to return to the CUSTOMER MODE 10 2 ALARM LIST At the end of the list of non adjustable parameters the Microprocessor Control displays a list of the most recent 20 alarm conditions This list can facilit...

Page 21: ...ompressor hot return gas hot 3 Compressor has shorted winding 1 High pressure cut out due to a Insufficient air flow across condenser b Overcharge c Insufficient water flow across condenser 2 Low pressure cut out due to a Undercharge b Restriction in or faulty expansion valve 1 Restriction in filter dryer or condenser 1 Shortage of refrigerant 2 Control contacts stuck 3 System inadequate to handle...

Page 22: ... pipe too long too high causing back pressure More than one condensate source connected providing alternative path for condensate Debris trapped under seal Damage to seal CORRECTIVE ACTION Check Fuses Contact your local distributor for further assistance Inspect probe cable and terminal connection Replace probe Inspect probe and check readings against independent source eg temperature analyzer pyr...

Page 23: ...22 Nirvana Cycling Refrigerated Dryer Models 3250 8000 ingersollrandproducts com 12 0 WIRING DIAGRAMS WIRING DIAGRAM NVC3250W WATERCOOLED 460 3 60 550088 A ...

Page 24: ...23 Nirvana Cycling Refrigerated Dryer Models 3250 8000 ingersollrandproducts com 12 0 WIRING DIAGRAMS WIRING DIAGRAM NVC3250A AIRCOOLED 460 3 60 550084 C ...

Page 25: ...24 Nirvana Cycling Refrigerated Dryer Models 3250 8000 ingersollrandproducts com 12 0 WIRING DIAGRAMS WIRING DIAGRAM NVC4000 AIRCOOLED 460 3 60 550005 D ...

Page 26: ...25 Nirvana Cycling Refrigerated Dryer Models 3250 8000 ingersollrandproducts com 12 0 WIRING DIAGRAMS WIRING DIAGRAM NVC4000 WATERCOOLED 460 3 60 550015 D ...

Page 27: ...26 Nirvana Cycling Refrigerated Dryer Models 3250 8000 ingersollrandproducts com 12 0 WIRING DIAGRAMS WIRING DIAGRAM NVC4800 AIRCOOLED 460 3 60 550161 A ...

Page 28: ...27 Nirvana Cycling Refrigerated Dryer Models 3250 8000 ingersollrandproducts com 12 0 WIRING DIAGRAMS WIRING DIAGRAM NVC4800 WATERCOOLED 460 3 60 550162 A ...

Page 29: ...28 Nirvana Cycling Refrigerated Dryer Models 3250 8000 ingersollrandproducts com 12 0 WIRING DIAGRAMS WIRING DIAGRAM NVC6000W400 WATERCOOLED 460 3 60 550022 C ...

Page 30: ...29 Nirvana Cycling Refrigerated Dryer Models 3250 8000 ingersollrandproducts com 12 0 WIRING DIAGRAMS WIRING DIAGRAM NVC6000W400 WATERCOOLED 460 3 60 550022 C ...

Page 31: ...30 Nirvana Cycling Refrigerated Dryer Models 3250 8000 ingersollrandproducts com 12 0 WIRING DIAGRAMS WIRING DIAGRAM NVC8000W400 WATERCOOLED 460 3 60 550026 H ...

Page 32: ...31 Nirvana Cycling Refrigerated Dryer Models 3250 8000 ingersollrandproducts com 12 0 WIRING DIAGRAMS WIRING DIAGRAM NVC8000W400 WATERCOOLED 460 3 60 550026 H ...

Page 33: ...M PUSHBUTTONS 1 ON 2 OFF 3 RESET 4 TEST 5 SET 6 SELECT DISPLAY 7 ENTER 8 LCD DISPLAY 1 CHILLER TEMP 2 COMPRESSOR ON OFF 3 DRAIN INTERVAL 4 DRAIN ON 5 PERCENT SAVINGS 6 CUMULATIVE DRYER HOURS 7 CUMULATIVE COMPRESSOR HOURS 8 CUSTOMER SET POINTS DRYER ON OFF SWITCH MODULE DISCONNECT SWITCH TYP A DETAIL A B DETAIL B 6 31 73 50 72 00 90 38 100 00 3 12 2 50 17 50 35 75 70 75 1 62 RIGGING HOLES TYP 3 00 ...

Page 34: ...a Cycling Refrigerated Dryer Models 3250 8000 ingersollrandproducts com 13 0 GENERAL ARRANGEMENT REAR VIEW 1 2 NPT DRAIN CONNECTION 2 PLCS 14 50 7 56 32 75 TOP VIEW GENERAL ARRANGEMENT NVC43250W NEMA 1 550086 A ...

Page 35: ...NTROL SYSTEM PUSHBUTTONS 1 ON 2 OFF 3 RESET 4 TEST 5 SET 6 SELECT DISPLAY 7 ENTER 8 LCD DISPLAY 1 CHILLER TEMP 2 COMPRESSOR ON OFF 3 DRAIN INTERVAL 4 DRAIN ON 5 PERCENT SAVINGS 6 CUMULATIVE DRYER HOURS 7 CUMULATIVE COMPRESSOR HOURS 8 CUSTOMER SET POINTS DRYER ON OFF SWITCH MODULE DISCONNECT SWITCH TYP A DETAIL A B DETAIL B 6 31 73 50 CONDENSER AIR DISCHARGE CONDENSER AIR INLET 72 00 90 38 100 00 3...

Page 36: ...na Cycling Refrigerated Dryer Models 3250 8000 ingersollrandproducts com 13 0 GENERAL ARRANGEMENT REAR VIEW 1 2 NPT DRAIN CONNECTION 2 PLCS 14 50 32 75 TOP VIEW 7 50 GENERAL ARRANGEMENT NVC3250A NEMA 1 550083 C ...

Page 37: ...N LIGHT DRYER FAULT ALARM LIGHT 64 75 AIR TREATMENT CONTROL SYSTEM PUSHBUTTONS 1 ON 2 OFF 3 RESET 4 TEST 5 SET 6 SELECT DISPLAY 7 ENTER 8 LCD DISPLAY 1 CHILLER TEMP 2 COMPRESSOR ON OFF 3 DRAIN INTERVAL 4 DRAIN ON 5 PERCENT SAVINGS 6 CUMULATIVE DRYER HOURS 7 CUMULATIVE COMPRESSOR HOURS 8 CUSTOMER SET POINTS DRYER ON OFF SWITCH MODULE DISCONNECT SWITCH TYP 86 00 5 25 4 88 96 12 17 50 35 75 2 50 70 7...

Page 38: ...Cycling Refrigerated Dryer Models 3250 8000 ingersollrandproducts com 13 0 GENERAL ARRANGEMENT 550004 GENERAL ARRANGEMENT NVC4000 4800A400 NEMA 1 550004 C REAR VIEW 1 2 NPT DRAIN CONNECTION 2 PLCS 14 50 32 75 7 56 ...

Page 39: ...TION DRYER ON OFF SWITCH POWER ON LIGHT DRYER FAULT ALARM LIGHT PUSHBUTTONS 1 ON 2 OFF 3 RESET 4 TEST 5 SET 6 SELECT DISPLAY 7 ENTER 8 AIR TREATMENT CONTROL SYSTEM LCD DISPLAY 1 CHILLER TEMP 2 COMPRESSOR ON OFF 3 DRAIN INTERVAL 4 DRAIN ON 5 PERCENT SAVINGS 6 CUMULATIVE DRYER HOURS 7 CUMULATIVE COMPRESSOR HOURS 8 CUSTOMER SET POINTS DRYER AUTO MANUAL REMOTE SWITCH 70 75 6 31 73 50 MODULE DISCONNECT...

Page 40: ...Cycling Refrigerated Dryer Models 3250 8000 ingersollrandproducts com 13 0 GENERAL ARRANGEMENT 550014 REAR VIEW 7 56 13 38 32 75 1 2 NPT DRAIN CONNECTION 2 PLCS GENERAL ARRANGEMENT NVC4000 4800W400 NEMA 1 550014 B ...

Page 41: ...M LIGHT AIR TREATMENT CONTROL SYSTEM MODULE DISCONNECT SWITCH TYP LCD DISPLAY 1 CHILLER TEMP 2 COMPRESSOR ON OFF 3 DRAIN INTERVAL 4 DRAIN ON 5 PERCENT SAVINGS 6 CUMULATIVE DRYER HOURS 7 CUMULATIVE COMPRESSOR HOURS 8 CUSTOMER SET POINTS PUSHBUTTONS 1 ON 2 OFF 3 RESET 4 TEST 5 SET 6 SELECT DISPLAY 7 ENTER 8 24 00 53 50 6 31 73 50 72 00 90 38 101 25 86 00 7 62 5 00 98 62 97 50 5 00 7 50 110 00 101 50...

Page 42: ...ycling Refrigerated Dryer Models 3250 8000 ingersollrandproducts com 13 0 GENERAL ARRANGEMENT REAR VIEW 7 56 14 50 32 75 TYP 1 2 NPT DRAIN CUSTOMER CONNECTION 3 PLCS GENERAL ARRANGEMENT NVC6000W400 NEMA 1 550021 C ...

Page 43: ... CONNECTION DRYER AUTO MANUAL REMOTE SWITCH POWER ON LIGHT DRYER FAULT ALARM LIGHT LCD DISPLAY 1 CHILLER TEMP 2 COMPRESSOR ON OFF 3 DRAIN INTERVAL 4 DRAIN ON 5 PERCENT SAVINGS 6 CUMULATIVE DRYER HOURS 7 CUMULATIVE COMPRESSOR HOURS 8 CUSTOMER SET POINTS PUSHBUTTONS 1 ON 2 OFF 3 RESET 4 TEST 5 SET 6 SELECT DISPLAY 7 ENTER 8 AIR TREATMENT CONTROL SYSTEM TYP DRYER ON OFF SWITCH MODULE DISCONNECT SWITC...

Page 44: ...ycling Refrigerated Dryer Models 3250 8000 ingersollrandproducts com 13 0 GENERAL ARRANGEMENT REAR VIEW 7 56 14 50 32 75 TYP 1 2 FPT CUSTOMER DRAIN CONNECTION 4 PLCS GENERAL ARRANGEMENT NVC8000W400 NEMA 1 550025 D ...

Page 45: ...OL LOOP FLOW 682368 682368 1 LAMPS POWER BOX 632207 632207 2 LENS POWER BOX GREEN 632208 632208 1 LENS POWER BOX RED 632210 632210 1 MODULE PLC EXPANSION 683955 683955 1 1 1 1 MOTOR CONDENSER FAN 683617 2 1 1 1 POWER SUPPLY 24V DC 683956 SP 683956 SP 1 1 1 1 PROBE EXCHANGER TEMPERATURE 682955L 682955L 1 1 1 1 PROBE TEMPERATURE 6FT LEAD INLET OUT TEMPERATURE 682955C 682955C 2 2 2 2 PUMP GLYCOL 6837...

Page 46: ...9391 699391 699391 1 2 2 4 HEATER COMPRESSOR CRANKCASE 682245 682245 682245 682245 1 INDICATOR GLYCOL LOOP FLOW 682368 682368 682368 682368 1 LAMPS POWER BOX 632207 632207 632207 632207 2 LENS POWER BOX GREEN 632208 632208 632208 632208 1 LENS POWER BOX RED 632210 632210 632210 632210 1 MODULE PLC EXPANSION 683955 683955 683955 683955 1 1 1 1 MOTOR CONDENSER FAN 2 1 1 1 POWER SUPPLY 24V DC 683956 ...

Page 47: ...IPTION QTY 1 38440889 CONTROL HEAD ASSEMBLY 1 2 38440897 INLET HEAD ASSEMBLY 1 3 38440905 FRP CYLINDER 1 4 38440913 RING AND FILTER KIT 1 5 38440921 TIE ROD KIT 1 6 38440939 CONTROL ASSEMBLY 1 7 38440947 CONTROL TUBING ASSEMBLY 1 8 38440954 AIR CYLINDER ASSEMBLY 1 9 38440962 BALL VALVE ASSEMBLY 1 CONDENSATE DRAIN VALVE ...

Page 48: ...e for the 38 F PDP flows Average kilowatts per hour of dryer operation at full rated capacity 460 3 60 380 3 50 575 3 60 voltages available 220 psig maximum working pressure Dimensions subject to change without notice Shipping weights shown are for air cooled models Water cooled model weight is less R 404A refrigerant used CAPACITY PRESSURE OVERALL DIMENSIONS SHIP CONNECT DRAIN REFRIG COMP H2O FLO...

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