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Ingersoll-Rand CENTAC Series Troubleshooting Manual Download Page 12

CENTAC TROUBLESHOOTING GUIDE

9

CST-TP0007

 1994 Ingersoll-Rand Company

Date of issue: January, 1999 Supersedes: 16-dec-94

High Oil Temperature

Cause

Solution

1. Inadequate water flow.

Provide adequate water flow to the oil

cooler.

2. High water temperature.

Lower water temperature; use a cooler
water source.

3. Bad AMOT valve.

Replace.

4. Water control valve thermostat out of

calibration.

Calibrate controller.

5. Dirty oil cooler on water side.

Clean water side of oil cooler.

6. Incorrect oil.

Check oil specification against I-R oil
requirements; install correct oil.

7. Water/glycol mixture greater than

50/50.

Adjust mixture to ensure the glycol is not
greater than 50%.

8. Water temperature supply higher than

oil cooler design.

Install larger oil cooler or additional
cooler.

9. Heat exchanger radiating fins dirty.

Clean fins.

10. Incorrect number of water passes.

Investigate. Orient return bonnett
correctly; replace bonnett gasket if
bypassing; install cooler with more
passes.

Summary of Contents for CENTAC Series

Page 1: ...INGERSOLL RAND AIR COMPRESSORS CENTAC Troubleshooting Guide ...

Page 2: ...pany THE CONTENTS OF THIS MANUAL ARE PROVIDED AS IS AND WITHOUT ANY IMPLIED WARRANTIES WHATSOEVER Ingersoll Rand air compressors are not designed intended or approved for breathing air applications Ingersoll Rand does not approve specialized equipment for breathing air applications and assumes no responsibility or liability for compressors used for breathing air service ...

Page 3: ...ressure ____________________________________________________________8 High Oil Temperature ________________________________________________________9 High Air Temperature _______________________________________________________10 Common Conversions and Information ________________________________________11 1 Temperature __________________________________________________________11 2 Pressure gauge___...

Page 4: ...ctive system pressure controller Adjust or replace 8 Too low CLL or LLR throttle surge Increase CLL or LLR setting 9 Too low P1 PR3 or mechanical stop adjustment unloaded surge Increase P1 PR3 or adjust mechanical stop 10 Improper calibration of valve I P positioner or actuator Calibrate as necessary 11 Defective bypass valve Repair or replace 12 Restriction in customer s system Investigate Take n...

Page 5: ...ctioning Adjust clean or replace regulator 2 Low instrument air pressure Increase instrument air pressure 3 Damaged seal air line Replace 4 Leaking fitting Replace or tighten 5 Leaking seals Replace 6 Seal air bleed valve open too far Adjust 7 Instrument air filter dirty Clean or replace element 8 Excessive clearance between pinion and seal Investigate Replace seal and or pinion ...

Page 6: ...nal compressor Recommend that customer purchase another Centac if additional capacity is required 7 Compressor block valve closed Open valve 8 Incorrect controls calibration Adjust controls 9 Discharge check valve sticking Repair or replace 10 System air pressure sensing point in wrong location Relocate control air connection 11 Excessive pressure differential across air dryer Investigate and corr...

Page 7: ... 5 Worn coupling Replace 6 Excessive grease in coupling Remove excessive grease 7 Bad bullgear or intermediate gear bearings Replace 8 Unbalanced motor rotor Have motor rotor balanced 9 Bad motor bearings Replace 10 Worn rotor assembly parts Replace rotor assembly or necessary parts 11 Excessive build up on impellers Clean and balance rotor assembly 12 Excessive pipe strain Remove pipe strain 13 I...

Page 8: ...ge location of sensing pressure 4 Leaking fittings or damaged pipe Repair or replace 5 Closed C A valve Open valve LowInstrumentAirPressure Cause Solution 1 Instrument air line too small Replace with a larger pipe 2 Instrument air dryer malfunctioning Repair or replace 3 Instrument air valve closed Open valve 4 Instrument air supply pressure below recommended pressure Increase supply pressure Obta...

Page 9: ... Investigate and correct 6 Trips at transition Mechanical linkage out of adjustment Bad 2M contactor Replace or repair contactor 7 Interlocks not satisfied Investigate and correct Adjust mechanical interlocks 8 Bad motor starter Repair or replace 9 Loose or corroded wiring Tighten and or clean as necessary 10 Control relay defective Replace 11 Low voltage Investigate Increase voltage supply Increa...

Page 10: ...OAD selector switch in the wrong position Turn switch to LOAD 2 Inlet valve stuck Investigate and correct 3 Controller setpoint too low Adjust 4 No control air signal Investigate and correct Check for closed valve 5 Surge sensor tripped Adjust or replace 6 Bypass valve will not close Investigate and correct 7 No power air to inlet or bypass valve Investigate Open power air shutoff valve 8 Valve ac...

Page 11: ...r replace 5 Leaking bullgear cover seal Remove cover and install new silicone sealant around oil supply groove 6 Leaking or pinched suction line Repair or replace 7 Low oil level Ensure 1 1 2 2 oil cover minimum above top of suction screens 8 Excessive gerotor axial clearance Tighten axial clearance 9 Wrong prelube pump motor Obtain correct prelube pump motor 10 Wrong size pump Install correct pum...

Page 12: ... Calibrate controller 5 Dirty oil cooler on water side Clean water side of oil cooler 6 Incorrect oil Check oil specification against I R oil requirements install correct oil 7 Water glycol mixture greater than 50 50 Adjust mixture to ensure the glycol is not greater than 50 8 Water temperature supply higher than oil cooler design Install larger oil cooler or additional cooler 9 Heat exchanger rad...

Page 13: ...r 5 Water flow bypassing air cooler Investigate and correct Replace waffle gasket if it is missing or damaged Reglue it if it is loose If shroud is loose reinstall with correct pop rivets Never use aluminum pop rivets 6 Water glycol mixture greater than 50 50 Adjust mixture to ensure the glycol is not greater than 50 7 Heat exchanger radiating fins dirty Clean fins 8 Water flows backward Cold wate...

Page 14: ... 2 X 0 98066 Kg cm 2 to inches of mercury in Hg at 0 C Kg cm 2 X 28 96 Kg cm 2 to kPa Kg cm 2 X 98 066 Kg cm 2 to PSI Kg cm 2 X 14 223 kPa to PSI kPa X 0 145 bars to PSI bars X 14 504 inches of H2 O at 68 F to inches of mercury in Hg at 0 C in H2 O X 0 07342 inches of water at 68 F to psi in H2 O X 0 03606 inches of water at 68 F to kPa in H2 O X 0 2487 inches of water at 68 F to Kg cm 2 in H2 O X...

Page 15: ...pheres atm in Hg X 0 03342 atmosphere standard to bar atm X 1 01325 atmosphere standard to psi atm X 14 696 atmosphere standard to Kg cm 2 atm X 1 0332 atmosphere standard to Kg m 2 atm X 10332 atmosphere standard to kPa atm X 101 325 3 Length inches to meters m in X 0 0254 inches to centimeters cm in X 2 54 inches to millimeters mm in X 25 4 meters to inches in m X 39 37 centimeters to inches in ...

Page 16: ... 0 00027778 cubic meters per minute nm 3 m to cubic feet per minute scfm nm 3 m X 35 315 gallons per minute US to cubic meters per minute nm 3 m gpm X 0 0037854 gallons per minute US to cubic meters per hour nm 3 h gpm X 0 2271 gallons per minute US to cubic feet per hour scfh gpm X 8 021 gallons per minute US to liters per second L s gpm X 0 06309 5 Volume gallons US to cubic inches in 3 gal X 23...

Page 17: ...rk performed Joule J metric unit of energy in watt per sec Volt E unit of electric pressure or electromotive force eff efficiency expressed as a decimal pf power factor expressed as a decimal hp horsepower output AC alternating current Ohms Law Relationship direct current DC E I R E W I E WR W I R 2 W E R 2 W E I I E R I W E I W R R E I R W I 2 R E W 2 kva IE 1000 single phase AC kva IE 1 73 1000 ...

Page 18: ...73 746 3 phase AC J IE sec DC J IE eff pf sec single phase AC J IE eff pf 1 73 sec 3 phase AC Amps hp known DC 746 hp E eff Amps hp known single phase AC 746 hp E eff pf Amps hp known 3 phase AC 746 1 73 hp E eff pf Amps KW known DC 1000KW E Amps KW known single phase AC 1000KW E pf Amps KW known 3 phase AC 1000 1 73 KW E pf Amps kva known single phase AC 1000kva E Amps kva known 3 phase AC 1000 1...

Page 19: ...c Peak D Displacement in mils Peak Peak f Frequency in Hz V A f 61 34 V f D 0 0031416 D V f 318 3 D A f 19 570 2 A D f 0 0000511 2 A V f 0 0162 RMS root mean square 0 707 X Peak RMS 1 111 X average RMS 0 354 X Pk Pk average 0 637 X Peak average 0 900 X RMS 2 average 0 318 X Pk Pk Pk Pk Peak to Peak 2 X Peak Pk Pk 2 828 X RMS Pk Pk 3 142 X average Pk Peak 1 414 X RMS Pk 1 571 X average ...

Page 20: ...PPM Maximum water temperature cooler discharge 140 F 60 C pH range 6 0 8 5 Langlier saturation index LI 0 5 1 0 A low pH level promotes corrosion and high levels of dissolved oxygen A high pH level increases the chance of scale formation A low LI indicates the water tends to be corrosive A high LI indicates a tendency to form scale It is recommended to contact a reputable water treatment professio...

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