Gardner Denver ELECTRA-SAVER II Service manual

GARDNER DENVER
ELECTRA–SAVER
ELECTRA–SAVER II
STATIONARY BASE–MOUNTED
COMPRESSOR
AUTO SENTRY–ES+ CONTROLS
AUTO SENTRY–ES CONTROLS
DOMESTIC MODELS
40 – 100 HP
EBH, EBM, EBP & EAP
INTERNATIONAL MODELS
EBM – 45 – 75 KW (60 – 100 HP)
OPERATING AND
SERVICE MANUAL
13–9/10–641
9th Edition
March, 1997

13–9/10–641 Page i
MAINTAIN COMPRESSOR RELIABILITY AND PERFORMANCE WITH
GENUINE GARDNER DENVERRCOMPRESSOR
PARTS AND SUPPORT SERVICES
Gardner DenverRCompressor genuine parts, engine-
ered to original tolerances, are designed for optimum
dependability–––specificallyforGardnerDenvercom-
pressor systems. Design and material innovations are
theresultofyearsofexperiencewithhundredsofdiffer-
ent compressor applications. Reliability in materials
and quality assurance are incorporated in our genuine
replacement parts.
YourauthorizedGardner DenverRCompressordistrib-
utor offers all the backup you’ll need. A worldwide net-
workofauthorizeddistributorsprovidesthefinestprod-
uct support in the air compressor industry. Your local
authorized distributor maintains a large inventory of
genuinepartsandheisbackedup foremergencyparts
by direct access to the Gardner Denver Machinery Inc.
Master Distribution Center (MDC) in Memphis, Ten-
nessee.
Your authorized distributor can support your Gardner
DenverRair compressor with these services:
1. Trained parts specialists to assist you in selecting
the correct replacement parts.
2. Factory warranted new and remanufactured
rotaryscrewair ends.Most popularmodelreman-
ufacturedairendsaremaintainedinstockatMDC
for purchase on an exchange basis with liberal
core credit available for the replacement unit.
3. AfulllineoffactorytestedAEONtcompressorlu-
bricantsspecifically formulatedfor use inGardner
Denver compressors.
4. Repair and maintenance kits designed with the
necessary parts to simplify servicing your com-
pressor.
Authorized distributor service technicians are factory–
trained and skilled in compressor maintenance and re-
pair. They are ready to respond and assist you by pro-
viding fast, expert maintenance and repair services.
For the location of your local authorized Gardner Denver Air Compressor distributor refer to the yellow
pages of your phone directory or contact:
Distribution Center: Factory:
Gardner Denver Machinery Inc. Gardner Denver Machinery Inc.
Master Distribution Center 1800 Gardner Expressway
5585 East Shelby Drive Quincy, IL 62301
Memphis, TN 38141 Phone: [phone]
Phone: [phone] Fax: [phone]
(800) 245–4946
Fax: [phone] REMANUFACTURED AIR ENDS
Whenever an air end requires replacement or repair,
Gardner Denver offers an industry unique, factory re-
manufactured air end exchange program. From its
modern Remanufacturing Center in Indianapolis, IN,
GardnerDenver iscommittedtosupplyingyou withthe
highest quality, factory remanufactured air ends that
are guaranteed to save you time, aggravation and
money.
Immediately Available
Repair downtime costs you money, which is why there
are over 200 remanufactured units in inventory at all
times, ready for immediate delivery.
Skilled Craftsmen
Our Remanufacturing assembly technicians average
over 20 years experience with air compression products.
Precision Remanufacturing
All potentially usable parts are thoroughly cleaned, in-
spected and analyzed. Only those parts that can be
brought back to original factory specifications are re-
manufactured. Everyremanufactured airend receives
anewoverhaulkit: bearings,gears,seals,sleevesand
gaskets.
Extensive Testing
Gardner Denver performs testing that repair houses
justdon’t do. Magnafluxand ultrasonicinspectionspot
cracked or stressed castings, monochromatic light
analysis exposes oil leaks, and coordinate measure-
ment machine inspects to +/– .0001”, insuring that all
remanufactured air ends meet factory performance
specifications.
Warranty
Gardner Denver backs up every remanufactured air
end with a new warranty . . . 18 months from purchase,
12 months from service.
GardnerDenverremanufacturedairendsdeliver
quali-
ty without question . . . year in and year out.
Call Gardner Denver for information on the air end ex-
change program and the name of your authorized dis-
tributor. Phone Number: 800–245–4946 or
FAX: [phone]

13–9/10–641 Page ii
FOREWORD
Gardner Denver Rotary Screw compressors are the result of advanced engineering and skilled manufacturing. To
beassuredofreceivingmaximumservicefromthismachinetheownermustexercisecareinitsoperationandmain-
tenance.Thisbookiswrittentogivetheoperatorandmaintenancedepartmentessentialinformationforday–to–day
operation,maintenanceand adjustment.Careful adherenceto theseinstructions willresultineconomicaloperation
and minimum downtime.
Danger is used toindicate the presenceof a hazardwhich will causesevere personal
injury, death, or substantial property damage if the warning is ignored.
Warning isusedto indicatethepresenceof ahazardwhichcan causesevere person-
al injury, death, or substantial property damage if the warning is ignored.
Caution is used to indicate the presence of a hazard which will or can cause minor
personal injury or property damage if the warning is ignored.
Notice is used tonotify people of installation,operation or maintenanceinformation
which is important but not hazard–related.

13–9/10–641 Page iii
This book covers the following models:
DOMESTIC MODELS:
Controller
HP PSIG Air Cooled Water Cooled Parts List Manual
40 100, 125 EBHQHC EBHSHC 13–9–555 13–9/10–647
EBHQHD EBHSHD 13–9–555 13–9/10–647
50 100, 125, 150 EBHQJC EBHSJC 13–9–555 13–9/10–647
EBHQJD EBHSJD 13–9–555 13–9/10–647
60 100, 125, 150 EBMQKE EBMSKE 13–9–557 13–9/10–647
EBMQKF EBMSKF 13–9–557 13–9/10–647
75 100, 125, 150 EBMQLE EBMSLE 13–9–557 13–9/10–647
EBMQLF EBMSLF 13–9–557 13–9/10–647
100 100, 125, 150 EBPQMC EBPSMC 13–9–556 13–9/10–647
EBPQME EBPSME 13–9–556 13–9/10–647
EAPQMD EAPSMD 13–10–507 13–9/10–647
EAPQME EAPSME 13–10–507 13–9/10–647
INTERNATIONAL MODELS:
HP PSIG Air Cooled Water Cooled Parts List Controller
(KW) (BARS) Manual
60 100, 125, 150 EBMQKD EBMSKE 13–9–557X 13–9/10–647
(45) (6.9, 8.6, 10.3) EBMQKG EBMSKG 13–9–557X 13–9/10–647
75 100, 125, 150 EBMQLD EBMSLE 13–9–557X 13–9/10–647
(55) (6.9, 8.6, 10.3) EBMQLG EBMSLG 13–9–557X 13–9/10–647
100 100, 125, 150 EBMQMD EBMSME 13–9–557X 13–9/10–647
(75) (6.9, 8.6, 10.3) EBMQMG EBMSMG 13–9–557X 13–9/10–647
INSTRUCTIONS FOR ORDERING REPAIR PARTS
When ordering parts, specify Compressor MODEL,
Method of Cooling, HORSEPOWER and SERIAL
NUMBER(see nameplateonunit). The SerialNumber
isalso stampedon topof thecylinder flangeto theright
of the inlet housing.
All orders for Parts should be placed with the nearest
authorized distributor.
Where NOT specified, quantity of parts required per
compressor or unit is one (1); where more than one is
required per unit, quantity is indicated in parenthesis.
SPECIFY EXACTLY THE NUMBER OF PARTS RE-
QUIRED.
DO NOT ORDER BY SETS OR GROUPS.
To determine the Right Hand and Left Hand side of a
compressor, stand at the motor end and look toward
the compressor. Right Hand and Left Hand are indi-
cated in parenthesis following the part name, i.e. (RH)
& (LH), when appropriate.

13–9/10–641 Page iv
TABLE OF CONTENTS
Remanufactured Air Ends i. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foreword ii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Instructions For Ordering Repair Parts iii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Index iv. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
List Of Illustrations ix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Section 1, General Information 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Section 2, Installation 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Section 3, Starting & Operating Procedures 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Section 4, Controls & Instrumentation 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Section 5, Lubrication, Oil Cooler, Oil Filter & Separator 33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Section 6, Air Filter 45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Section 7, Coupling 47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Section 8, Maintenance Schedule 48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Section 9, Trouble Shooting 49. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warranty Last Page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

INDEX
13–9/10–641 Page v
Actuator, Turn Valve 21. . . . . . . . . . . . . . . . . . . . . . .
Addition of Oil Between Changes 37. . . . . . . . . . . .
AIR FILTER, SECTION 6 45. . . . . . . . . . . . . . . . . . .
Air Filter Element Life 45. . . . . . . . . . . . . . . . . . . . . .
Air Filter Vacuum Switch 22. . . . . . . . . . . . . . . . . . .
Air Filter, Heavy Duty (Standard) 45. . . . . . . . . . . .
Compression Principle 1. . . . . . . . . . . . . . . . . . . . . .
Air Flow in the Compressor System 1. . . . . . . . . . .
Air Receiver, Auxiliary 10. . . . . . . . . . . . . . . . . . . . . .
Air–Cooled Units, Location 8. . . . . . . . . . . . . . . . . .
Auto Sentry Operation 18. . . . . . . . . . . . . . . . . . . . .
Auxiliary Air Receiver 10. . . . . . . . . . . . . . . . . . . . . .
Blowdown Valve 19. . . . . . . . . . . . . . . . . . . . . . . . . .
Change Procedure, Lubricant 37. . . . . . . . . . . . . . .
Check, Daily 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning and Draining Oil System 39. . . . . . . . . . .
Cold Ambient Operation 37. . . . . . . . . . . . . . . . . . . .
Cold Weather Operation 10. . . . . . . . . . . . . . . . . . .
Cold Weather Operation, Installation for 9. . . . . . .
Compressor 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compressor (GD Eliminator) Oil Separator 43. . .
Compressor Capacity Control – Turn Valve
Units Only 23. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compressor Oil Cooler 40. . . . . . . . . . . . . . . . . . . . .
Compressor Oil Filter 40. . . . . . . . . . . . . . . . . . . . . .
Compressor Oil System 33. . . . . . . . . . . . . . . . . . . .
Compressor Oil System Check 44. . . . . . . . . . . . . .
Control Devices 18. . . . . . . . . . . . . . . . . . . . . . . . . . .
Control Piping 11. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Control Transformer 22. . . . . . . . . . . . . . . . . . . . . . .
Controller 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CONTROLS & INSTRUMENTS, SECTION 4 18.
Controls & Instruments, General Description 18. .
Cooler, Compressor Oil 40. . . . . . . . . . . . . . . . . . . .
Cooling, Sealing and Lubrication 1. . . . . . . . . . . . .
COUPLING, SECTION 7 47. . . . . . . . . . . . . . . . . . .
Coupling 47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Alignment 47. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Individual Cushion Design 47. . . . . . . . . . . . . . .
Daily Check 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Decals 6, 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Discharge Service Line 12. . . . . . . . . . . . . . . . . . . .
Discharge Thermistor 22. . . . . . . . . . . . . . . . . . . . . .
Drain, Oil Reservoir 9. . . . . . . . . . . . . . . . . . . . . . . . .
Draining and Cleaning Oil System 39. . . . . . . . . . .
Electric Motor Grease Recommendations 15. . . .
Electric Motor Regreasing Interval 15. . . . . . . . . . .
Electrical Wiring 14. . . . . . . . . . . . . . . . . . . . . . . . . . .
Standard Units 14. . . . . . . . . . . . . . . . . . . . . . . . .
Element Life, Air Filter 45. . . . . . . . . . . . . . . . . . . . .
Emergency Stop Push–Button 22. . . . . . . . . . . . . .
Enclosure 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fan Starter 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Filter, Compressor Oil 40. . . . . . . . . . . . . . . . . . . . . .
Filter Element 45. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Filter, Heavy Duty Air (Standard) 45. . . . . . . . . . . .
Foreward ii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foundation 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gauge, Oil Level 19, 38. . . . . . . . . . . . . . . . . . . . . .
GENERAL INFORMATION, SECTION 1 1. . . . . .
Grease Recommendations, Electric Motor 15. . . .
Grounding 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
High Temperature Operation 33. . . . . . . . . . . . . . . .
Inlet Line 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inlet Screen and Tube 46. . . . . . . . . . . . . . . . . . . . .
Inlet Valve 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLATION, SECTION 2 8. . . . . . . . . . . . . . . .
Installation, General 8. . . . . . . . . . . . . . . . . . . . . . . .
Installation for Cold Weather Operation 9. . . . . . .
Lifting Unit 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Line, Discharge Service 12. . . . . . . . . . . . . . . . . . . .
Line, Inlet 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

INDEX
13–9/10–641 Page vi
Location 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air–Cooled Units 8. . . . . . . . . . . . . . . . . . . . . . . .
Water–Cooled Units 9. . . . . . . . . . . . . . . . . . . . .
Lubricant, Recommended 33. . . . . . . . . . . . . . . . . .
Lubricant Change Procedure 37. . . . . . . . . . . . . . .
Lubrication, Motor 14. . . . . . . . . . . . . . . . . . . . . . . . .
Lubrication, Cooling and Sealing 1. . . . . . . . . . . . .
LUBRICATION, OIL COOLER, OIL FILTER &
SEPARATOR, SECTION 5 33. . . . . . . . . . . . . .
Main Starter 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MAINTENANCE SCHEDULE, SECTION 8 48. . .
Minimum Discharge Pressure Valve 19. . . . . . . . .
Moisture in the Oil System 38. . . . . . . . . . . . . . . . . .
Moisture Separator/Trap 10. . . . . . . . . . . . . . . . . . .
Motor Grease Recommendations 15. . . . . . . . . . .
Motor Lubrication 14. . . . . . . . . . . . . . . . . . . . . . . . . .
Motor Regreasing Interval 15. . . . . . . . . . . . . . . . . .
Oil Change Interval 38. . . . . . . . . . . . . . . . . . . . . . . .
Oil Cooler, Compressor 40. . . . . . . . . . . . . . . . . . . .
Oil Filter, Compressor 40. . . . . . . . . . . . . . . . . . . . . .
Oil Level Gauge 19, 38. . . . . . . . . . . . . . . . . . . . . . .
Oil Reservoir 43. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Reservoir Drain 9. . . . . . . . . . . . . . . . . . . . . . . . .
Oil Separator
Compressor (GD Eliminator) 43. . . . . . . . . . . . .
Inspection 43. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Carryover 43. . . . . . . . . . . . . . . . . . . . . . . . . .
Removal for Inspection or Replacement 44. . .
Oil Specifications 33. . . . . . . . . . . . . . . . . . . . . . . . . .
Oil System
Compressor 33. . . . . . . . . . . . . . . . . . . . . . . . . . .
Draining and Cleaning 39. . . . . . . . . . . . . . . . . .
Oil System Check 44. . . . . . . . . . . . . . . . . . . . . . . . .
Air and Oil Discharge Temperature 44. . . . . . .
Compressor Oil Inlet Temperature 44. . . . . . . .
Oil Cooler Oil Pressure Differential 44. . . . . . . .
Oil Cooler Temperature Differential 44. . . . . . .
Oil Cooler Water Pressure Differential 44. . . . .
Oil Inlet Pressure 44. . . . . . . . . . . . . . . . . . . . . . .
Operation
Cold Ambient 37. . . . . . . . . . . . . . . . . . . . . . . . . .
High Temperature 33. . . . . . . . . . . . . . . . . . . . . .
Optional Switches 23. . . . . . . . . . . . . . . . . . . . . . . . .
Piping, Control 11. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pressure Differential Gauging 43. . . . . . . . . . . . . . .
Pressure Regulator 21. . . . . . . . . . . . . . . . . . . . . . . .
Prestart–Up Instructions 16. . . . . . . . . . . . . . . . . . . .
Air Filter 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Coupling 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Enclosure 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Grounding 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Mode 17. . . . . . . . . . . . . . . . . . . . . . . .
Piping 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rotation 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System Pressure 17. . . . . . . . . . . . . . . . . . . . . . .
Purge Valve 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended Lubricant 33. . . . . . . . . . . . . . . . . . .
Regreasing Interval, Electric Motor 15. . . . . . . . . .
Regulator, Pressure 21. . . . . . . . . . . . . . . . . . . . . . .
Relief Valve 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remanufactured Air Ends i. . . . . . . . . . . . . . . . . . . .
Repair Parts, Ordering Instructions iii. . . . . . . . . . .
Reservoir, Oil 43. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reservoir Pressure Transducer 22. . . . . . . . . . . . .
Safety Precautions 4, 5. . . . . . . . . . . . . . . . . . . . . . .
Sealing, Lubrication and Cleaning 1. . . . . . . . . . . .
Separator, Compressor (GD Eliminator) Oil 43. . .
Separator/Trap, Moisture 10. . . . . . . . . . . . . . . . . . .
SERVICE CHECK LIST, AIR FILTER 48. . . . . . . .
Service Check List 48. . . . . . . . . . . . . . . . . . . . . . . .
Every 1000 Hours Operation 48. . . . . . . . . . . . .
Every 125 Hours Operation 48. . . . . . . . . . . . . .
Every 6000 Hours Operation 48. . . . . . . . . . . . .

INDEX
13–9/10–641 Page vii
Every 8 Hours Operation 48. . . . . . . . . . . . . . . .
Every Year 48. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Motor Lubrication 48. . . . . . . . . . . . . . . . . . . . . . .
Oil Separator 48. . . . . . . . . . . . . . . . . . . . . . . . . .
Shuttle Valve 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Solenoid Valves IVC and IVO 21. . . . . . . . . . . . . . .
Solenoid Valves TVC and TVO 22. . . . . . . . . . . . . .
Specifications, Oil 33. . . . . . . . . . . . . . . . . . . . . . . . .
Starter
Fan 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STARTING & OPERATING PROCEDURES,
SECTION 3 16. . . . . . . . . . . . . . . . . . . . . . . . . . .
Starting the Unit 17. . . . . . . . . . . . . . . . . . . . . . . . . . .
Unit Cold 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unit Hot 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stopping the Unit 17. . . . . . . . . . . . . . . . . . . . . . . . . .
Strip, Terminal 22. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Switch
Air Filter Vacuum 22. . . . . . . . . . . . . . . . . . . . . . .
Vibration 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Switches, Optional 23. . . . . . . . . . . . . . . . . . . . . . . .
System Pressure Transducer 22. . . . . . . . . . . . . . .
System Thermistor 22. . . . . . . . . . . . . . . . . . . . . . . .
Terminal Strip 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermistor
Discharge 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transducer
Reservoir Pressure 22. . . . . . . . . . . . . . . . . . . . .
System Pressure 22. . . . . . . . . . . . . . . . . . . . . . .
Transformer, Control 22. . . . . . . . . . . . . . . . . . . . . . .
TROUBLE SHOOTING, SECTION 9 49. . . . . . . . .
Tube, Inlet 46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Turn Valve 1, 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Turn Valve Actuator – EAQ Units Only 21. . . . . . .
Valve
Blowdown 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inlet 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Minimum Discharge Pressure 19. . . . . . . . . . . .
Purge 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Relief 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shuttle 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Solenoid IVC and IVO 21. . . . . . . . . . . . . . . . . . .
Solenoid TVC and TVO 22. . . . . . . . . . . . . . . . .
Turn 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vibration Switch 22. . . . . . . . . . . . . . . . . . . . . . . . . . .
Warranty Last Page. . . . . . . . . . . . . . . . . . . . . . . . . .
Water–Cooled Units, Location 9. . . . . . . . . . . . . . .
Wiring, Electrical 14. . . . . . . . . . . . . . . . . . . . . . . . . .

13–9/10–641 Page viii
LIST OF ILLUSTRATIONS
Figure # Description Page
Figure 1–1 Compression Cycle 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1–2 Starter Box 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1–3 Package – Controller & Starters 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1–4 Package – Drive Motor & Air Filter 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1–5 Package – Oil Filter, Oil Level Gauge, Mixing Valve, Minimum Pressure Valve, Check Valve 3. .
Figure 1–6 Package – Air/Oil Flow Diagram 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–1 Typical Compressor Room 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–2 Air Flow Chart 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–3 Cold Weather Installation 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–4 Inlet Line Lengths 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–5 Heat Exchanger (Oil Cooler) Approximate Water Flow 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–6 Aftercooler Approximate Water Flow 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–7 Series Piping 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–8 Parallel Piping 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–1 Schematic Tubing Diagram 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–2 Blowdown Valve 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–3 Minimum Discharge Pressure Valve 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–4 Inlet Valve 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–5 Shuttle Valve 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–6 Turn Valve – Electra–Saver Only 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–7 Control Schematic – Compressor Unloaded – Constant Speed Mode, EBH & EBM Units 24. . . .
Figure 4–8 Control Schematic – Compressor at Full Load – Constant Speed Mode, EBH & EBM Units 25. .
Figure 4–9 Control Schematic – Compressor Unloaded – Low Demand Mode or Auto Mode,
EBH & EBM Units 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–10 Control Schematic – Compressor at Full Load, EAP Units Only 27. . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–11 Control Schematic – Compressor Fully Unload – Low Demand Mode Switch Off, EAP Units 28.
Figure 4–12 Control Schematic – Compressor Fully Loaded – Low Demand Mode Switch On, EAP Units 29.
Figure 4–13 Wiring Diagram – 207ECP546, Wye Delta – EBH, EBM & EBP Units with ES Controls 30. . . . .
Figure 4–14 Wiring Diagram – 209ECP546, Full Voltage – EBH, EBM & EBP Units with ES Controls 31. . . .
Figure 4–15 Wiring Diagram – 216EAP546, Wye Delta – EAP with ES+ Controls and Current Monitor 32. . .
Figure 5–1 Flow Diagram – Air/Oil System – Turn Valve Units 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–2 Oil Flow Diagram – Remote Overhead Mounted Cooler 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–3 Cooler Drain Detail 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–4 Oil Level Gauge 38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–5 Oil Change Interval 38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–6 Approximate Oil System Capacities 39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–7 Thermostatic Mixing Valve Element 41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–8 Water Control Valve 42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–9 Dew Point Temperature vs. Ambient Temperature, (100% Relative Humidity) 42. . . . . . . . . . . . . . .
Figure 5–10 Oil Separator 43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–1 Heavy Duty Air Filter 45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 7–1 Installation of Coupling Cushions 47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

13–9/10–641 Page 1
SECTION 1
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 compres-
sion chamber. Single width cylindrical roller bearings
areusedat theinletend oftherotors tocarrypart ofthe
radial loads. Tapered roller bearings at the discharge
end locate each rotor axially and carry all thrust loads
and the remainder of the radial loads.
COMPRESSION PRINCIPLE (FIGURE 1–1) – Com-
pression is accomplished by the main and secondary
rotors synchronously meshing in a one–piece cylinder.
Themain rotorhas four (4)helical lobes90_apart.The
secondary rotor has six (6) matching helical grooves
60_apart to allow meshing with main rotor lobes.
Theairinletportislocatedontopofthecompressorcyl-
inder near the drive shaft end. The discharge port is
near the bottom at the opposite end of the compressor
cylinder.
Figure 1–1 is an inverted view to show inlet
and discharge ports
.Thecompression cycle begins as
rotors unmesh at the inlet port and air is drawn into the
cavity between the main rotor lobes and secondary ro-
torgrooves (A). Whenthe rotors passthe inlet portcut-
off,airistrappedintheinterlobecavityandflowsaxially
with the meshing rotors (B). As meshing continues,
more of the main rotor lobe enters the secondary rotor
groove, normal volume is reduced and pressure in-
creases.
Oil is injected into the cylinder to remove the heat of
compression and seal internal clearances. Volume re-
ductionandpressureincreasecontinuesuntiltheair/oil
mixture trapped in the interlobe cavity by the rotors
passesthedischargeportandisreleasedtotheoilres-
ervoir(C). Each rotor cavityfollowsthe same “fill–com-
press–discharge” cycle in rapid succession to produce
a discharge air flow that is continuous, smooth and
shock free.
AIR FLOW IN THE COMPRESSOR SYSTEM
(FIGURE 5–1, page 34) – Air enters the air filter and
passes through the inlet unloader valve to the com-
pressor. After compression, the air/oil mixture passes
into the oil reservoir where most of the entrained oil is
removed by velocity change and impingement and
drops back into the reservoir. The air and remaining oil
passesintotheseparatorandseparatorhousingwhere
theoilisseparatedandpassesthroughtubingconnect-
ing the separator housing and compressor. The air
passes through the minimum pressure valve, dis-
charge check valve and cooler, then to the plant air
lines.
LUBRICATION, COOLING AND SEALING – Oil is
forcedbyair pressurefromthe oilreservoir throughthe
oil cooler, thermostatic mixing valve, and oil filter and
discharges into the compressor main oil gallery. A por-
tion of the oil is directed through internal passages to
the bearings, gears and shaft oil seal. The balance of
theoilisinjecteddirectlyintothecompressionchamber
to remove heat of compression, seal internal clear-
ances and lubricate the rotors.
TURN VALVE (EAP UNITS ONLY) – The turn valve is
a rotary helical valve located on the discharge side of
the cylinder toward the inlet end. The valve opens and
closes ports in the cylinder which communicates with
theinletpassage.Thisvaries thecompressorrotorvol-
ume to match the demand for air, thus reducing the
part–load power requirement.

13–9/10–641 Page 2
FIGURE 1–2 – STARTER BOX
FIGURE 1–3 – PACKAGE – CONTROLLER & STARTERS
217ECM797
(Ref. Drawing)
FIGURE 1–4 – PACKAGE – DRIVE MOTOR & AIR FILTER
217ECM797
(Ref. Drawing)

13–9/10–641 Page 3
FIGURE 1–5 – PACKAGE – OIL FILTER, OIL LEVEL GAUGE, MIXING VALVE,
MINIMUM PRESSURE VALVE & CHECK VALVE
217ECM797
(Ref. Drawing)
FIGURE 1–6 – PACKAGE – AIR/OIL FLOW DIAGRAM
219ECM797–A
(Ref. Drawing)

13–9/10–641 Page 4
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.
DKeep fingers and clothing away from revolving fan, drive coupling, etc.
DDo not use the air discharge from this unit for breathing – not suitable for hu-
man consumption.
DDonot loosenor removetheoil fillerplug,drain plugs,covers,the thermostat-
icmixingvalve orbreak anyconnections,etc., inthecompressorairor oilsys-
tem until the unit is shut down and the air pressure has been relieved.
DElectrical shock can and may be fatal.
DCompressor unit mustbe grounded inaccordance withthe NationalElectrical
Code. A ground jumper equal to the size of the equipment ground conductor
must be used to connect the compressor motor base to the unit base.
DFan motors must remain grounded to the main base through the starter
mounting panel in accordance with the National Electrical Code.
DOpen main disconnect switch, tag and lockout before working on the control.
DDisconnect the compressor unit from its power source, tag and lockout be-
fore working on the unit – this machine is automatically controlled and may
start at any time.

13–9/10–641 Page 5
Failure to observe these notices could result in damage to equipment.
DStop the unit if any repairs or adjustments on or around the compressor are
required.
DDisconnect the compressor unit from its power source, tag and lockout be-
fore working on the unit – this machine is automatically controlled and may
start at any time.
DAn Excess Flow Valve should be on all compressed air supply hoses ex-
ceeding 1/2 inch inside diameter. (OSHA Regulation, Section 1926.302)
DDonot exceedthe ratedmaximum pressurevalues shownon thenameplate.
DDo not operate unit if safety devices are not operating properly. Check peri-
odically. Never bypass safety devices.

13–9/10–641 Page 6
DECALS
206EAQ077 212EAQ077
218EAQ077
211EAQ077 207EAQ077

13–9/10–641 Page 7
DECALS
216EAQ077
217EAQ077
222EAQ077
221EAQ077 208EAQ077

13–9/10–641 Page 8
SECTION 2
INSTALLATION
GENERAL– On receipt of the unit, check foranydam-
agethatmayhavebeenincurredduringtransit. Report
any damage or missing parts as soon as possible.
Do not electric weld on the compres-
sor or base; bearings can be damaged
by passage of current.
LIFTING UNIT – Proper lifting and/or transporting
methodsmust beusedtopreventdamage. Liftingslots
areprovidedinthebasefortowmotoruse.Theunitmay
also be moved into location by rolling on bars.
Lift compressor unit by base only. Do
not use other places such as motor,
compressor or discharge manifold
piping as lifting points.
The eyebolts or lugs provided on the
motor are for lifting the motor only
and should not be used to lift any
additional weight. All eyebolts must
be securely tightened. When lifting
the motor the lifting angle must not
exceed 15 degrees.Failure to observe
this warning may result in damage to
equipment or personal injury.
Compressor, air/oil reservoir, separa-
tion chamber and all piping and tub-
ingmaybe athightemperature during
and after operation.
LOCATION – The compressor should be installed,
wheneverpossible,in aclean,well–lighted,well–venti-
lated area with ample space all around for mainte-
nance.Selectalocationthatprovidesa cool,clean,dry
source of air. In some cases it may be necessary to
install the air filter at some distance from the compres-
sor to obtain proper air supply.
Both the air–cooled and water–cooled units require
coolingairaswellasairtothecompressorinlet.Proper
ventilation MUST be provided; hot air must be ex-
hausted from the compressor operating area. A typical
inlet–outlet air flow arrangement is shown in
FIGURE 2–1.
Air–Cooled Units – A combination oil/aftercooler is
suppliedasstandardequipmentonallair–cooledunits.
The air–cooled unit with the standard enclosure re-
quires sufficient flow, FIGURE 2–2, page 9, for the
compressoroil/aftercoolingsystemandforelectricmo-
tor cooling. Air is drawn into the unit at the motor side
ofthe enclosure andis exhausted atthe oil coolerside.
Do not block the air flow to and from the unit. Allow
three and one–half (3–1/2) feet (1.1 M) to the nearest
obstruction on the starter end and control box end of
the unit. Allow three (3) feet (.9 M) to the nearest ob-
struction above and on other sides of unit. For continu-
ous efficiency, oil cooler cores must be periodically
cleaned with either vacuum or compressed air. If wet
cleaning is required, shield motor and spray on a mild
soap solution and flush with clean water.
FIGURE 2–1 – TYPICAL COMPRESSOR ROOM

13–9/10–641 Page 9
* 80_F (27_C) Inlet Air
Minimum Air Flow * For Compression
And Cooling – Cubic Feet/Minute
(Cubic Meters/Minute)
HP (KW) Air Cooled Water Cooled
40 & 50 HP 6,500 1,400
60–100 HP 12,500 1,700
(45–75 KW) (354) (48)
FIGURE 2–2 – AIR FLOW CHART
For aluminum oil coolers, do not use
any cleaning solution that is not com-
patible with aluminum.Use ofimprop-
er solution may result in damage to
the cooler.
Water–Cooled Units –The water–cooled unit with the
standard enclosure requires sufficient air flow,
FIGURE 2–2, for electric motor cooling. Air is drawn
intotheunitatthetopoftheenclosureandisexhausted
atthe motor side. Donotblock air flow toand from unit.
Allow three and one–half (3–1/2) feet (1.1 M) to the
nearest obstruction on the starter end and control box
sideoftheunit.Allowthree(3)feet(.9 M)tothenearest
obstruction above and on other sides of the unit.
FOUNDATION – The G–D Rotary Screw compressor
requires no special foundation, but should be mounted
on a smooth, solid surface. Whenever possible install
theunitnearlevel.Temporaryinstallationmaybemade
at a maximum 10_angle lengthwise or 10_sidewise.
Mounting bolts are not normally required. However,
installation conditions such as piping rigidity, angle of
tilt, or danger of shifting from outside vibration or mov-
ing vehicles may require the use of mounting bolts and
shims to provide uniform support for the base.
OIL RESERVOIR DRAIN – The oil drain is piped from
thebottomofthereservoirtothe sideoftheframe.This
drainis approximately4.50 inches (115mm) abovethe
floor level. If this is not sufficient to conveniently drain
the oil some other methods of providing drain are:
1. Elevate the compressor unit on a suitable struc-
ture to obtain the desired drain height.
If the compressor unit base is raised
above floor level, the space between
the floor and the base bottom must be
closed with solid material all around
to prevent recirculation of hotair from
the oil cooler end and over tempera-
ture operation.
2. Construct an oil sump or trough below the floor
level and pump or bail the drained oil.
3. Pump oil from the reservoir filler opening or drain
to a container.
ENCLOSURE – The compressor, electric motor, oil
cooler and aftercooler are mounted inside the enclo-
sure. Service doors are provided for maintenance ac-
cess. Be sure to allow enough space around the unit
for the doors to open completely. Any of the enclosure
doors may be removed by opening the door and lifting
it up slightly to disengage the hinges.
Do not operate the compressor with
the fan and coupling guard removed.
Exposed fan and belts may cause
injury to personnel.
The motor inspection/air filter service panel is held by
two latches and lifts away from the enclosure. The air
outletpanel isattached by screwsto theenclosure and
is not readily removeable.
INSTALLATION FOR COLD WEATHER OPERA-
TION (FIGURE 2–3, page 10) – It is recommended
that the unit be installed inside a shelter that will be
heated to temperatures above freezing (32_F, 0_ C).
This will eliminate many of the problems associated
with operating units in cold climates where freezing
rain, drifting snow, freezing condensate and bitter cold
temperatures are encountered.
Refer to Engineering Data Sheet 13–9–411 for the ad-
vantages of using the heat recovered from rotary com-
pressors.Thisheatrecoverycouldeasilypayforanad-
equate shelter for the unit.
When an outside installation must be made, the pre-
cautions required will depend on the severity of the en-
vironment. The following are general guidelines for
outside installations:

13–9/10–641 Page 10
FIGURE 2–3 – COLD WEATHER INSTALLATION
(2.4 M)
Cold Weather (Down To +10_F, –12_C)
1. Be sure all drains, traps, and control lines, includ-
ing pressure transducer lines are heated to avoid
freezing of condensate. Heat tape with thermo-
stat control is generally satisfactory for this pur-
pose and can be obtained at various local plumb-
ing or hardware outlets at nominal cost.
2. If an air–cooled aftercooler is to be used, provi-
sions to bypass the aftercooler must be made.
Since cold air contains very little moisture, suc-
cessful operation can be achieved without the af-
tercooler.
3. Provideatleastsomesimplesheltersuchasaply-
wood windbreak to protect against drifting snow.
4. Use only Gardner DenverRAEONt9000 SP lu-
bricant.
5. Monitor the unit carefully during start–up and op-
eration to be sure it is functioning normally.
6. Specify NEMA 4 enclosure for electrical devices.
Extreme Cold Weather Operation (Down To –40_F,
–40_C)
In addition to the above, the following should be pro-
vided:
1. It will be necessary to provide shutters or to block
off part of the cooler in some manner since the
cooler is greatly oversized for operation in these
low temperatures. Since shutters are not pro-
vided as a factory option, blocking off a portion of
the cooler with plywood should be satisfactory.
2. Auto operation should not be used in extreme en-
vironments.
3. Some means of providing heat during shutdown
should be provided. There are various methods
toaccomplishthis,butsinceopeningsarenotpro-
videdfor sump heaters, theuseof radiant heaters
is recommended. The heaters should be sized to
provide at least a +10_F (–12_C) environment for
coolers, motor and sump. FIGURE 2–3, page 10,
shows how these might be located in a typical
installation and sizes required.
Remember unsheltered (outside) installations should
be avoided where possible. Installation next to a
heated building where enough heat can be used to
keep the compressor room above freezing will save
many complications in the operation and installation of
the unit.
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.
AUXILIARY AIR RECEIVER–An auxiliaryair receiver
isnotrequiredifthepipingsystemislargeandprovides
sufficient storage capacity to prevent rapid cycling.
Whenused,anairreceivershouldbe ofadequatesize,
providedwithareliefvalveofpropersetting,apressure
gauge and a means of draining condensate. A means
of draining condensate will need to be provided for.
MOISTURE SEPARATOR/TRAP – Since the unit is
equipped with a built–in aftercooler, a combination
moisture separator and trap is furnished with the unit.

13–9/10–641 Page 11
Length of Inlet Line Diameter of Pipe Size
0 to 10 Feet (0 to 3 Meters) Same as Compressor Inlet Opening. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 to 17 Feet (3 to 5 Meters) One Size Larger Than Inlet Opening. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17 to 38 Feet (5 to 11.5 Meters) Two Sizes Larger Than Inlet Opening. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FIGURE 2–4 – INLET LINE LENGTHS
CONTROL PIPING – Control piping is not necessary
since the Electra–ScrewRunit is factory wired and
piped for the control system specified.
INLET LINE – Where an inlet line is used between the
air filter and the compressor, it must be thoroughly
cleaned on the inside to prevent dirt or scale from enter-
ing the compressor. If welded construction is used,
the line must be shot blasted and cleaned to remove
welding scale. In either case, the inlet line must be
coated internally by galvanizing or painting with a mois-
ture and oil–proof sealing lacquer. Up to ten (10) feet (3
meters) in length, the inlet line should be the full size of
the inlet opening on the compressor. If an extra–long line
isnecessary,thepipesizeshouldbeincreasedaccording
to Inlet Line Length Chart, FIGURE 2–4.
HEAT EXCHANGER (DOMESTIC)
Approx.
Water Temperature to Heat Exchanger Water Pressure
Gallons/minute Maximum Drop @ 90_F
Water Flow Water Temp.
HP Model 60_F. 70_F. 80_F. 90_F. GPM* PSI
40 HP EBHSH_ 3.4 4.3 5.7 8.6 30.0 1.0
50 HP EBHSJ_ 4.1 5.1 6.8 10.2 30.0 1.5
60 HP EBMSK_ 5.0 6.2 8.3 12.5 40.8 2.0
75 HP EBMSL_ 6.0 7.6 10.1 15.1 40.8 1.5
100 HP EBPSM_ 8.4 10.5 14.1 21.1 40.8 5.0
100 HP EAPSM_ 8.4 10.5 14.1 21.1 40.8 5.0
FIGURE 2–5 – HEAT EXCHANGER (OIL COOLER) APPROXIMATE WATER FLOW
HEAT EXCHANGER (INTERNATIONAL)
Water Temperature to Heat Exchanger Approx.
Liters/Second Maximum Water Press. Drop
Water Flow @ 32_C. Water
KW Model 16_C. 21_C. 27_C. 32_C. L/S * Temp. Bar
45 KW EBMSK_ .32 .39 .52 .79 2.57 .14 Bar
55 KW EBMSL_ .44 .54 .73 1.09 2.57 .10 Bar
75 KW EBMSM_ .58 .73 .97 1.44 2.57 .35 Bar
* Flows exceeding “Maximum Water Flow” will cause severe erosion and will void unit warranty.