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13-9-663
Version: 02
June 15, 2009
ELECTRA SCREW
ELECTRA-SAVER
ELECTRA-SAVER II
STATIONARY BASE-MOUNTED
COMPRESSOR
®
AUTO SENTRY
-- ES+ CONTROLS
EAH99C, EBH99G - 40, 50 HP
EAM99C, EBM99K - 60, 75 HP
ERH99E, EAP99J, EBP99J - 100 HP
INTERNATIONAL MODELS
EBM99L 60, 75, 100 HP (45, 56, 75 KW)
OPERATING AND
SERVICE MANUAL
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Related Manuals for Gardner Denver EAH99C
Summary of Contents for Gardner Denver EAH99C
- Page 1 STATIONARY BASE-MOUNTED COMPRESSOR ® AUTO SENTRY -- ES+ CONTROLS EAH99C, EBH99G - 40, 50 HP EAM99C, EBM99K - 60, 75 HP ERH99E, EAP99J, EBP99J - 100 HP INTERNATIONAL MODELS EBM99L 60, 75, 100 HP (45, 56, 75 KW) OPERATING AND...
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Page 2: Maintain Compressor Reliability And Performance With Genuine Gardner Denver Compressor Parts And Support Services
Remanufacturing Center in Indianapolis, IN., for purchase on an exchange basis with liberal core credit available for the replacement unit. 3. A full line of factory tested AEON™ compressor lubricants specifically formulated for use in Gardner Denver compressors. -
Page 3: Warning - Prohibition - Mandatory Label Information
WARNING – PROHIBITION – MANDATORY LABEL INFORMATION Gardner Denver Rotary Screw compressors are the result of advanced engineering and skilled manufacturing. To be assured of receiving maximum service from this machine, the owner must exercise care in its operation and maintenance. This book is written to give the operator and maintenance department essential information for day-to-day operation, maintenance and adjustment. - Page 4 Indicates a hazard with a medium level of risk which, if not avoided, COULD result in death or serious injury. Asphyxiation Hazard – Poisonous Fumes or Toxic Gases in Compressed Air Indicates a hazard with a low level of risk which, if not avoided, MAY result in a minor or moderate injury.
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Page 5: Safety Precautions
SAFETY PRECAUTIONS Safety is everybody’s business and is based on your use of good common sense. All situations or circumstances cannot always be predicted and covered by established rules. Therefore, use your past experience, watch out for safety hazards and be cautious. Some general safety precautions are given below: Failure to observe these notices could result in injury to or death of personnel. -
Page 6: Table Of Contents
TABLE OF CONTENTS Maintain Compressor Reliability And Performance With Genuine Gardner Denver Compressor Parts And Support Services ................1 Instructions For Ordering Repair Parts/Remanufactured Airends ..............1 Warning – Prohibition – Mandatory Label Information.................. 2 Safety Precautions ............................4 Index................................6 List Of Illustrations............................ -
Page 7: Index
INDEX Addition Of Oil Between Changes ....51 Inlet Valve ............29 Aftercooler Piping..........49 Installation For Cold Weather Operation ..16 Installation, Section 2........13 Air Filter Element Life........64 Air Filter Vacuum Switch ........31 Air Filter, Heavy Duty (Standard) .....63 Lifting Unit ............13 Air Filter, Section 6...........63 Location ............ - Page 8 Parallel Piping ..........21 Air Filter ............68 Piping Shuttle Valve............ 30 Series............20 Solenoid Valves Ivc And Ivo ......30 Pressure Differential Gauging ......60 Solenoid Valves Tvc And Tvo......31 Pressure Regulator ..........30 Starting & Operating Procedures, Section 3..23 Prestart-Up Instructions ........23 Starting The Unit ..........
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Page 9: List Of Illustrations
LIST OF ILLUSTRATIONS Figure 1-1 – Compression Cycle ........................9 Figure 1-2 – Starter Box..........................10 Figure 1-3 – Control Box ..........................10 Figure 1-4 – Compressor / Motor Side......................11 Figure 1-5 – Cooler / Reservoir Side ......................11 Figure 1-6 –... -
Page 10: Section 1, General Information
GENERAL INFORMATION Figure 1-1 – COMPRESSION CYCLE COMPRESSOR - The Gardner Denver Rotary Screw compressor is a single stage, positive displacement rotary machine using meshing helical rotors to effect compression. Both rotors are supported between high capacity roller bearings located outside the compression chamber. Single width cylindrical roller bearings are used at the inlet end of the rotors to carry part of the radial loads. -
Page 11: Figure 1-2 - Starter Box
LUBRICATION, COOLING AND SEALING - Oil is forced by air pressure from the oil reservoir through the oil cooler, thermostatic mixing valve, and oil filter and discharges into the compressor main oil gallery. A portion of the oil is directed through internal passages to the bearings, gears and shaft oil seal. The balance of the oil is injected directly into the compression chamber to remove heat of compression, seal internal clearances and lubricate the rotors. -
Page 12: Figure 1-4 - Compressor / Motor Side
Figure 1-4 – COMPRESSOR / MOTOR SIDE 217ECM797-A (Ref. Drawing) Figure 1-5 – COOLER / RESERVOIR SIDE 13-9-663 Page 11... -
Page 13: Figure 1-6 - Air/Oil Flow Diagram
219ECM797-A (Ref. Drawing) Figure 1-6 – AIR/OIL FLOW DIAGRAM 13-9-663 Page 12... -
Page 14: Section 2, Installation
SECTION 2 INSTALLATION GENERAL - On receipt of the unit, check for any damage that may have been incurred during transit. Report any damage or missing parts as soon as possible Do not electric weld on the compressor or base; bearings can be damaged by passage of current. -
Page 15: Figure 2-1 - Typical Compressor Room
Both the air-cooled and water-cooled units require cooling air as well as air to the compressor inlet. Proper ventilation MUST be provided; hot air must be exhausted from the compressor operating area. A typical inlet-outlet air flow arrangement is shown in Figure 2-1. Figure 2-1 –... - Page 16 (.9 m) to the nearest obstruction above and on other sides of the unit. FOUNDATION - The Gardner Denver Rotary Screw compressor requires no special foundation, but should be mounted on a smooth, solid surface. Whenever possible install the unit near level. Temporary installation may be made at a maximum 10°...
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Page 17: Figure 2-3 - Cold Weather Installation
Provide at least some simple shelter such as a plywood windbreak to protect against drifting snow. Use only Gardner Denver AEON 9000 SP lubricant. Monitor the unit carefully during start-up and operation to be sure it is functioning normally. -
Page 18: Figure 2-4 - Inlet Line Lengths
Refer to Engineering Data Sheet 13-9-411, available from an authorized Gardner Denver distributor, for the advantages of using the heat recovered from rotary compressors. This heat recovery could easily pay for an adequate shelter for the unit. -
Page 19: Figure 2-5 - Heat Exchanger (Oil Cooler) Approximate Water Flow
Exchanger Gallons/minute Maximum Water Approximate Water Flow Pressure Drop @ 90° F Model 60° F 70° F 80° F 90° F Gallons/minute * Water Temperature PSI EAH99C 30.0 EBH99G EAH99C 10.2 30.0 EBH99G EAM99C 12.5 40.8 EBM99K EAM99C 10.1 15.1 40.8... -
Page 20: Figure 2-6 - Aftercooler Approximate Water Flow
Approximate Water Flow Pressure Drop @ 90° F Model 60° F 70° F 80° F 90° F Gallons/minute * Water Temperature PSI EAH99C 26.0 EBH99G EAH99C 26.0 EBH99G EAM99C 26.0 Less than 1 PSI for any EBM99K flow rate shown in the table EAM99C 26.0... -
Page 21: Figure 2-7 - Series Piping
Most water systems will require control of impurities: filtration, softening or other treatment. See Section 5, “Compressor Oil Cooler - Water-Cooled Heat Exchanger” for more information on the water system. * (Optional) Water Control Valve and Water Shutoff Valve Must Be Ordered Separately Figure 2-7 –... - Page 22 , page 19. See Section 5 for adjustment instructions and maximum allowable lubricant temperature. ELECTRICAL WIRING - Standard Units - The Gardner Denver Rotary Screw compressor is factory wired for all starter to motor and control connections for the voltage specified on the order. It is necessary only to connect the unit starter to the correct power supply.
- Page 23 MOTOR LUBRICATION - Long time satisfactory operation of an electric motor depends in large measure on proper lubrication of the bearings. The following charts show recommended grease qualities and regreasing intervals for ball bearing motors. For additional information refer to the motor manufacturer’s instructions.
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Page 24: Section 3, Starting & Operating Procedures
Compressor Oil - Check the oil level in the reservoir. Add oil only if the oil level gauge reads in the red “ADD OIL” range. Do not mix different type oils. The unit is shipped filled with Gardner Denver AEON 9000 SP Lubricating Coolant which is suitable for the first 8000 hours under normal operating conditions. - Page 25 Grounding - Equipment must be properly grounded according to Table 250-95 of the National Electrical Code. Failure to properly ground the compressor package could result in controller malfunction. Rotation - Check for correct motor rotation using “JOG MODE.” Compressor drive shaft rotation must be clockwise standing facing the compressor coupling.
- Page 26 The compressor starts and stops automatically. Automatic restarting can cause injury or death. Open, lockout and tagout main disconnect and any other circuits before servicing the unit. STARTING THE UNIT - Observe the following starting procedures. Unit Cold - If the unit is a water-cooled heat exchanger model, open any manual water inlet valves wide open.
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Page 27: Section 4, Controls & Instrumentation
SECTION 4 CONTROLS & INSTRUMENTATION GENERAL DESCRIPTION - The Gardner Denver Rotary Screw compressor is prewired with all controls, motor, and starter for the voltage and horsepower at the time of ordering. It is necessary only to connect the compressor unit to the correct power supply and to the shop air line (and to the appropriate water supply if water-cooled). -
Page 28: Figure 4-1 - Schematic Tubing Diagram
When the relief valve opens, a stream of high velocity air is released, resulting in a high noise level and possible discharge of accumulated dirt or other debris. Always wear eye and ear protection and stand clear of the discharge port when testing the relief valve to prevent injury. -
Page 29: Figure 4-2 - Blowdown Valve
Figure 4-2 – BLOWDOWN VALVE Blowdown Valve (Figure 4-2) - This valve normally is used for control functions, but also serves to relieve reservoir pressure following a shutdown. The blowdown valve is a two-way solenoid valve which is piped into the oil reservoir outlet ahead of the minimum pressure valve. When the solenoid is de- energized, the valve opens and the coolant system is blown down. -
Page 30: Figure 4-4 - Inlet Valve
To service the valve, make sure all pressure is relieved, disconnect the unit from the power supply, lockout and tagout, then unscrew the valve cap from the body. The internal parts will come out after the cap has been removed. Repair kits are available from your local authorized Gardner Denver distributor. 224ECM797-B (Ref. -
Page 31: Figure 4-5 - Shuttle Valve
Solenoid Valves IVC and IVO - These valves control position of the inlet valve in response to signals from the “AutoSentry” Controller. With both valves de-energized, the normally open IVC valve allows control pressure to the inlet piston to close the valve. If IVC only is energized, the inlet valve is held in its current position. -
Page 32: Figure 4-6 - Turn Valve - Electra-Saver Only
213ECM797-A (Ref. Drawing) Figure 4-6 – TURN VALVE – ELECTRA-SAVER ONLY Turn Valve (Electra-Saver only) (Figure 4-6)- The turn valve is a helical valve which, when rotated, opens and closes a series of ports cast into the compressor cylinder. When these ports are open, they direct some of the air which would otherwise be compressed back to the inlet, reducing both capacity and power consumption. - Page 33 Discharge Thermistor - This sensor is located directly in the compressor discharge. Its signal is used to monitor compressor temperature and shut down the compressor if a coolant problem is detected. Reservoir Thermistor - This sensor is located near the separator and is used to monitor temperature and shut down the compressor if high temperatures are detected.
- Page 34 COMPRESSOR CAPACITY CONTROL - TURN VALVE UNITS ONLY The capacity of the compressor is controlled by the action of the turn valve and the compressor inlet valve. The turn valve controls compressor delivery to match demands of 40% to 100% of the compressor’s maximum capacity.
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Page 35: Figure 4-7 - Control Schematic - Compressor Unloaded - Constant Speed Mode
225ECM797-B (Ref. Drawing) Figure 4-7 – CONTROL SCHEMATIC – COMPRESSOR UNLOADED – CONSTANT SPEED MODE ERH, EBH, EBM & EBP UNITS ONLY... -
Page 36: Figure 4-8 - Control Schematic - Compressor At Full Load - Constant Speed Mode
226ECM797-B (Ref. Drawing) Figure 4-8 – CONTROL SCHEMATIC – COMPRESSOR AT FULL LOAD – CONSTANT SPEED MODE ERH, EBH, EBM & EBP UNITS ONLY... -
Page 37: Figure 4-9 - Control Schematic - Compressor Unloaded - Low Demand Mode Or Auto Mode
227ECM797-B (Ref. Drawing) Figure 4-9 – CONTROL SCHEMATIC – COMPRESSOR UNLOADED – LOW DEMAND MODE OR AUTO MODE ERH, EBH, EBM & EBP UNITS ONLY... -
Page 38: Figure 4-10 - Control Schematic - Compressor At Full Load
214ECM797-B (Ref. Drawing) Figure 4-10 – CONTROL SCHEMATIC – COMPRESSOR AT FULL LOAD EAH, EAM & EAP UNITS ONLY... -
Page 39: Figure 4-11 - Control Schematic - Compressor Fully Unloaded - Low Demand Mode Switch Off
215ECM797-B (Ref. Drawing) Figure 4-11 – CONTROL SCHEMATIC – COMPRESSOR FULLY UNLOADED – LOW DEMAND MODE SWITCH OFF EAH, EAM & EAP UNITS ONLY... -
Page 40: Figure 4-12 - Control Schematic - Compressor Fully Loaded - Low Demand Mode Switch On
216ECM797-B (Ref. Drawing Figure 4-12 – CONTROL SCHEMATIC – COMPRESSOR FULLY LOADED – LOW DEMAND MODE SWITCH ON EAH, EAM & EAP UNITS ONLY... -
Page 41: Figure 4-13 - Wiring Diagram - Wye Delta
214ECP546-B (Ref. Drawing) Figure 4-13 – WIRING DIAGRAM – WYE DELTA EBH, EBM & EBP UNITS WITH ES+ CONTROLS... -
Page 42: Figure 4-14 - Wiring Diagram - Full Voltage
218ECP546-A (Ref. Drawing) Figure 4-14 – WIRING DIAGRAM – FULL VOLTAGE ERH, EBH, EBM & EBP UNITS WITH ES+ CONTROLS... -
Page 43: Figure 4-15 - Wiring Diagram - Wye Delta
216EAP546-B (Ref. Drawing) Figure 4-15 – WIRING DIAGRAM – WYE DELTA EAH, EAM & EAP UNITS WITH ES+ CONTROLS AND CURRENT MONITOR... -
Page 44: Figure 4-16 - Wiring Diagram - Full Voltage
220EAP546-B (Ref. Drawing) Figure 4-16 – WIRING DIAGRAM – FULL VOLTAGE EAH, EAM & EAP UNITS WITH ES+ CONTROLS AND CURRENT MONITOR... -
Page 45: Section 5, Lubrication, Oil Cooler, Oil Filter & Separator
AEON lubricants are available through your authorized Gardner Denver compressor distributor. OIL SPECIFICATIONS - The factory fill compressor lubricant is Gardner Denver AEON 9000 SP lubricating coolant which can be used for year-round operation. AEON 9000 SP is a synthetic, extended life lubricant which can extend lubricant change intervals up to 4 times that of a petroleum based lubricant. - Page 46 HIGH TEMPERATURE OPERATION - Gardner Denver AEON 9000 SP lubricating coolant will operate at a sustained discharge temperature up to 210° F (99° C). When unusually high ambient air temperature is encountered, it will shorten the lubricant life, see , page 53.
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Page 47: Figure 5-1 - Dew Point Chart °F
Dew-Point Temperature vs. Ambient Temperature (100% Relative Humidity) 100 psig 125 psig 150 psig 175 psig Ambient Temp. F Figure 5-1 – DEW POINT CHART °F Dew -Point Tem perature vs. Am bient Tem perature (100% Relative Hum idity) 6.9 bar 8.6 bar 10.4 bar 12.1 bar... -
Page 48: Figure 5-3 - Flow Diagram - Air/Oil System
221ECM797-B (Ref. Drawing) Figure 5-3 – FLOW DIAGRAM – AIR/OIL SYSTEM... -
Page 49: Figure 5-4 - Oil Flow Diagram - Remote Overhead Mounted Cooler
201EAP797-A (Ref. Drawing) 218ECM797-A (Ref. Drawing) Figure 5-4 – OIL FLOW DIAGRAM – REMOTE OVERHEAD MOUNTED COOLER 13-9-663 Page 48... -
Page 50: Figure 5-5 - Cooler Drain Detail
REMOTE MOUNTED ELEVATED COOLER ASSEMBLY PROCEDURE - The Compressor package will be built and tested with the coolers mounted on the package. On enclosed units, the fan motor will be disconnected after test and the vent fan motor connected in its place. The vent fan will be mounted in the enclosure. - Page 51 NOTICE When removing the cooling module from the package for remote operation, do not use the flexible coupling (when supplied) between the air/oil separator housing and the minimum pressure/check valve. The discharge piping from the air/oil separator housing should be piped into the minimum pressure/check valve, then into piping to the cooler, with a flexible connection between the minimum pressure/check valve and aftercooler to keep the weight of the piping off of the cooler.
- Page 52 COLD AMBIENT OPERATION - See “Installation for Cold Weather Operation,” Section 2. ADDITION OF OIL BETWEEN CHANGES must be made when the oil level is in the red range on the gauge as read while the unit is on. To add oil, follow these steps: Be sure the unit is completely off and that no air pressure is in the oil reservoir.
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Page 53: Figure 5-6 - Oil Level Gauge
Operating conditions and the appearance of the drained oil must be surveyed and the oil change intervals planned accordingly by the user. Gardner Denver offers a free oil analysis program with the AEON lubricants and we recommend a sample be sent in at 100 hours on a new unit. -
Page 54: Figure 5-7 - Oil Change Interval
Discharge AEON 4000 AEON 9000 SP Temperature Change Interval Change Interval 4000 hrs. 8000 hrs. Up to 180° F (82° C) 3000 hrs. 6000 hrs. 180° F to 190° F (82° C to 88° C) 2000 hrs. 4000 hrs. 190° F to 200° F (88° C to 93° C) 1000 hrs. -
Page 55: Figure 5-8 - Approximate Oil System Capacities
FILLING OIL RESERVOIR Air/oil under pressure will cause severe personal injury or death. Shut down compressor, relieve system of all pressure, disconnect, lockout and tagout power supply to the starter before removing valves, caps, plugs, fittings, bolts and filters. Be sure the unit is completely off and that no air pressure is in the oil reservoir. Disconnect, lockout and tagout the power supply to the starter. - Page 56 COMPRESSOR OIL FILTER (Figure 5-3) - This screw on oil filter is a vital part in maintaining a trouble- free compressor, since it removes dirt and abrasives from the circulated oil. The oil filter relief valve is located in the oil filter head. The relief valve opens in the event the element becomes dirty enough to block the flow of oil.
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Page 57: Figure 5-9 - Thermostatic Mixing Valve Element
COMPRESSOR OIL COOLER - RADIATOR TYPE (Figure 1-5, page 11) - The oil cooler motor and fan is mounted on the oil cooler module; air is exhausted through the oil cooler and away from the unit. Do not obstruct air flow to and from the oil cooler. Allow a minimum of three (3) feet clearance around the cooler. Keep both faces of cooler core clean for efficient cooling of compressor oil. -
Page 58: Figure 5-10 - Water Control Valve
It is mandatory that any water-cooled unit be installed in a shelter heated to temperatures above freezing (32° F, 0° C). Oil cooler malfunction may be traced by checking pressure at oil inlet and outlet. At normal operating air service pressure (65 psig to 150 psig, 4.5 bar to 10.3 bar) with the unit warm, a pressure drop of 3 psi to 15 psi (.2 bar to 1 bar) can be expected between the oil inlet and the oil outlet. -
Page 59: Figure 5-11 - Dew Point Temperature Vs. Ambient Temperature
WATER FLOW CONTROL VALVE FOR HEAT EXCHANGER (Optional Equipment) (Figure 5-10, page 57) - The water flow control valve is adjustable to compensate for varying water inlet temperatures and pressures and is to be mounted in the water outlet line after the oil cooler (Figure 5-3, page 47). Use the compressor discharge air temperature gauge on the instrument panel in setting the flow control valve. -
Page 60: Figure 5-12 - Oil Separator
WATER SHUTOFF VALVE - WATER-COOLED HEAT EXCHANGER (Optional Equipment) (Figure 5-3, page 47) - A magnetic solenoid-operated water shutoff valve rated at 150 psig (10.3 bar) water pressure should be mounted in the water outlet line after the oil cooler. The valve should be wired into the compressor control circuit so that the valve opens to allow water to flow any time the compressor is running. - Page 61 Oil carryover malfunctions of the oil separator are usually due to using elements too long, heavy dirt or varnish deposits caused by inadequate air filter service, use of improper oil or using oil too long for existing conditions. A ruptured or collapsed separator element is usually due to heavy dirt or varnish buildup in the filtering material.
- Page 62 Removal Of Oil Separator For Inspection Or Replacement: Air/oil under pressure will cause severe personal injury or death. Shut down compressor, relieve system of all pressure, disconnect, lockout and tagout power supply to the starter before removing valves, caps, plugs, fittings, bolts and filters.
- Page 63 Oil Cooler Oil Pressure Differential (Air-Cooled Radiator) - Check differential across oil system by measuring oil inlet pressure as described above. Oil Cooler Oil Pressure Differential (Water-Cooled Heat Exchanger) – 2 psid to 25 psid (.1 bar to 1.7 bar) (65 psig to 150 psig, 4.5 bar to 10.3 bar receiver pressure) - Check that oil inlet pressure is correct or measure the differential between drains on the oil cooler shell.
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Page 64: Section 6, Air Filter
Filter Element - Service the air filter element when the ”CHANGE AIR FILTER” LED is illuminated. Clean every 50 to 150 operating hours depending on dust conditions. NOTICE Use only genuine Gardner Denver air filter elements on Gardner Denver compressor units. Genuine parts are available through your authorized Gardner Denver distributor. - Page 65 Do not oil this element. Do not wash in inflammable cleaning fluids. Do not use solvents other than water. Improper cleaning may damage the element. NOTICE Never operate the unit without the element. Never use elements that are damaged, ruptured or wet. Never use gaskets that won't seal. Keep spare elements and gaskets on hand to reduce downtime.
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Page 66: Section 7, Coupling
SECTION 7 COUPLING Figure 7-1 – INSTALLATION OF COUPLING CUSHIONS Rotating machinery can cause personal injury or death. Turn the unit completely off, open the main disconnect, lockout and tagout before servicing the coupling. COUPLING - The motor and compressor are direct connected by a resilient type flexible coupling with a single cushion. - Page 67 ASSEMBLY OF COUPLING ONTO THE AIREND AND MOTOR (Figure 7-1). NOTICE Elements with non-uniform cross sections must be mounted with the rotation arrow on the coupling the same direction as the rotation arrow on the airend. Incorrect rotation will greatly decrease the torque carrying capacity of the coupling.
- Page 68 3. Apply a light oil or grease film to both sides of the hardened steel washer. This is very important, since it will significantly reduce the rubber stresses around the metal bushings when torquing down the cap screws. Place the supplied hardened washers under the cap screw heads and torque the screws down to the torque rating in the assembly instructions supplied with the coupling.
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Page 69: Section 8, Maintenance Schedule
SECTION 8 MAINTENANCE SCHEDULE SERVICE CHECK LIST Air Filter - Operating conditions determine frequency of service. If the “CHANGE AIR FILTER” message is displayed, air filter requires servicing or changing. See “Air Filter", Section 6. Oil Separator - Operating conditions determine frequency of service. If the “CHANGE SEPARATOR” message is displayed, the oil separator element requires changing. - Page 70 MAINTENANCE SCHEDULE Maintenance Action As Indicated by Every Every Every Every AutoSentry Every 8 1000 8000 * Year Controller Hours Hours Hours Hours • Change Air Filter ..............• Change Oil Separator ............• Check Reservoir Oil Level ..........• Check for Proper Load/Unload...........
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Page 71: Section 9, Troubleshooting
SECTION 9 TROUBLESHOOTING SYMPTOM POSSIBLE CAUSE REMEDY Compressor fails to start Wrong lead connections. Change leads. Blown fuses in control Replace fuse. box. Motor starter overload Reset and investigate heaters tripped . cause of overload. Pressure in reservoir. Inspect blowdown valve. Read error message on Take appropriate action. - Page 72 SYMPTOM POSSIBLE CAUSE REMEDY Compressor starts too Wye Delta switch time set Contact your Champion slowly too long. distributor. Minimum Pressure/Check Repair or replace. Valve is faulty. Supply voltage is too low. Check the supply voltage. Compressor is low on Restricted air filter.
- Page 73 NOTICE Gardner Denver factory remanufactured replacement compressor airend units are available from your authorized distributor, on an exchange basis, for all rotary screw compressor units. 13-9-663 Page 72...
- Page 76 Gardner Denver Compressor Division, 1800 Gardner Expressway, Quincy, Illinois 62305 Telephone: (800) 682-9868 FAX: (217) 224-7814 Specifications subject to change without notice. Copyright © 2009 Gardner Denver, Inc. Litho in U.S.A. Visit our Web Site: www.gardnerdenver.com Sales and Service in all major cities.