1. Electra

1 Price $ / th Edition ELECTRA-SAVER STATONARY BASE-MOUNTED COMPRESSOR MODELS 40 THRU 100 HP EA & EB OPERATNG AND SERVCE MANUAL COOPER Gardner-Denver ndustrial Machinery 2 MANTAN COMPRESSOR RELABLTY AND PERFORMANCE WTH GENUNE GARDNER-DENVER AND JOY COMPRESSOR PARTSAND SUPPORT SERVCES Gardner-Denver and Joy Compressor genuine parts, engineered to original tolerances, are designed for optimum dependability - specifically for Gardner-Denver and Joy compressor systems. Design and material innovations are the result of years of experience with hundreds of different compressor applications. Reliability in materials and quality assurance are incorporated in our genuine replacement parts. Your authorized Gardner-Denver and Joy Compressor distributor offers all the backup you ll need. A worldwide network of authorized distributors provides the finest product support in the air compressor industry. Your local authorized distributor maintains a large inventory of genuine parts and he is backed up for emergency parts by direct access to the Gardner-Denver ndustrial Machinery Master Distribution Center (MDC) in Memphis, Tennessee.

Your authorized distributor can support your Gardner- Denver or Joy air compressor with these services: Trained parts specialists to assist you in selecting the correct replacement parts. Factory warranted new and remanufactured rotary screw air ends.

Most popular model remanufactured air ends are maintained in stock at MDC for purchase on an exchange basic with liberal core credit available for the replacement unit. A full line of factory tested AEON compressor lubricants specifically formulated for use in Gardner-Denver and Joy compressors. Repair and maintenance kits designed with the necessary parts to simplify servicing your compressor. Authorized distributor service technicians are factory-trained and skilled in compressor maintenance and repair. They are ready to respond and assist you by providing fast, expert maintenance and repair services.

For the location of your local authorized Gardner-Denver and Joy Air Compressor distributor refer to the yellow pages of your phone directory or contact: Distribution Center: Factory: Gardner-Denver Gardner-Denver ndustrial Machinery Division ndustrial Machinery Division Master Distribution Center 1800 Gardner Expressway 5585 East Shelby Drive Quincy, L Memphis, TN Phone: (217) Phone: (901) Fax: (217) Fax: (901) NSTRUCTONS FOR ORDERNG REPAR PARTS When ordering parts, specify Compressor MODEL, required per unit, quantity is indicated in parenthesis. Method of Cooling, HORSEPOWER and SERAL NUM- SPECFY EXACTLY THE NUMBER OF PARTS RE- BER (see nameplate on unit). Serial Number is also QURED. Stamped on top of the cylinder flange to the right of the inlet housing. DO NOT ORDER BY SETS OR GROUPS. All orders for Parts should be placed with the nearest authorized distributor.

To determine the Right Hand and Left Hand side of a compressor, stand at the motor end and look toward the Where NOT specified, quantity of parts required per compressor. Right Hand and Left Hand are indicated in compressor or unit is one (1); where more than one is parenthesis following the part name, i.e. AR ENDS NOTE: Factory warranted new and rebuilt air ends are available from your authorized Gardner-Denver and JOY Compressor Distributor. 3 FOREWARD 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 iswritten to give the operator and maintenance department essential information for day-today operation, maintenance and adjustment. Careful adherence to these instructions will result in economical operation and minimum downtime. DANGER Danger is used to indicate the presence of a hazard which will cause severe personal injury, death, or substantial propery damage if the warning is ignored. A WARNNG Warning is used to indicate the presence of a hazard which can cause severe personal injury, death, or substantial propery damage if the warning is ignored.

cauton Caution is used to indicate the presence of a hazard which will or can cause minor personal injury or propery damage if the warning is ignored. NOTCE Notice is used to notify people of installation, operation or maintenance information which is important but not hazard-related. This book covers the following models: HP PSG Air Cooled Water Cooled 40 HP 100, 125 EBHQHA EBHSHA EBHQHC EBHSHC 50 HP 100, 125, EBHQJA EBHSJA 150 EBHQJC EBHSJC 60 HP 100, 125 EBMQKA EBMSKA EBMQKC EBMSKC, 125, EBMQLA EBMSLA 150 EBMQLC EBMSLC 100 HP 100, 125, 150 EBPQMA EBPQMC EAPQMD Parts List /10-S41 Page i 4 TABLE OF CONTENTS GENERAL NFORMATON.SECTlON 1 lnstalmtlon.sectlon2 STARTNG AND OPERATNG PROCEDURES. SECTlON 3 CONTROLS AND instruments. SECTlON 4 LUBRCATON, OL COOLER, OL FLTER AND SEPARATOR. SECTlON 5 AR FLTERS.SECTlON 6 COUPLNG.SECTlON 7 MANTENANCE SCHEDULE.SECTlON 8 TROUBLE SHOOTNG.SECTlON / Page ii 5 NDEX NOTE: Numbers preceding dash are Section Numbers - Numbers following dash are Page Numbers Air Control Components.4a-3.

4b-4 Air Cooled Unit installation Air Filter Element Life.6.l Air Filter Element - Service nstructions Air Filter Vacuum Switch.4a-4. 4b-5 AR FLTERS (SECTON 6) Air/Oil Flow Diagram Air/Oil Flow Diagram - Remote Overhead Cooler Auto Sentry-ES, Controller Display.4a-5. 4b-6 Auto Sentry-ES, operation.4a-5. 4b-5 Auto Sentry-ES, Operation (Automatic Male).4a.5.

4b-6 Auto Sentry-ES, Operation (Constant Run Male).4a.5. 4b-6 Auto Sentry-ES, Operation (Low Demand Male).4a.5. 4b-6 Auto Sentry-ES, Operation (Sequence Mode). 4a-5, 4b-6 Auto Sentry-ES, Programming And Set-Up instruction.4a%.

John Deere 400 H3 Main Winter Machine Down - Fixing odds & ends - 19.9HP Kohler 532- Hydrostatic - 3PT Hitch - Back Blade - Snow Blower - Cab - Weights - Chains 1974 Massey 12G - Backup Machine - Tecumseh 12HP - 4 Speed Variator - 42' Mower Deck - Snow Blower - Tiller - Cab 1996 Sears GT6000 - Backup Machine - Kohler Command 22HP Twin - 6 Speed Hi/Low - 42' Mower Deck - 42' Dual Stage Blower - Brush Guard - ATV Tires - Chains & Weights 1974 John Deere 112 (Parts) 197? 18 hp briggs and stratton service manual.

4b-7 AuxiliaAr Receiver Basic information Blowdown Valve.4a.4. 4b-4 Blowdown Valve Piping Cold Weather Operation Control Schematics.

4a-9, 4a-10, 4b-10, 4b-11 CONTROLS & NSTRUMENTS (SECTON 4).la-l. 4b-1 COUPLNG - DRVE (SECTON 7) Decals, 1-7 Discharge Service Line.24 Electrical Witing Enclosure Filling Oil Reservoir Foundation Gauges and Displays.4a.2. 4b-4 GENERAL NFORMATON (SECTON 1) Grease Recommendations Grounding High Temperature Operation High Temperature Shutdown.4a-1.

4b-1 nlet Line nlet Valve Control.4a.3. 4b-4 NSTALLATON (SECTON 2) Lifting Unit.2.l Location.2.l Lubricant, Addition of Oil Between Changes Lubricant, Changing Type of Oil Lubricant, Draining and Cleaning System Lubricant, Oil Specifications Lubricant, Recommended Lubricant Change lntewal LUBRCATON, OL COOLER, OL FLTER & SEPARATOR (SECTON 5) MANTENANCE SCHEDULE (SECTON 8) Minimum Pressure/Check Valve. 4a-3, 4b-5 Moisture inthe Oil System Motor Lubrication Motor Protection Devices.4a-1. 4b-1 Oil Cooler (Water Cld.) - Water Flow Control Valve Oil Cooler (Water Cld.) - Water Shutoff Valve Oil Cooler- Radiator Type Oil Cooler - Water Coold Oil Filter Oil Level Gauge Oil Reservoir Oil Reservoir Drain Oil Separator Oil Separator - nspection o Oil Separator - Pressure Differential Gauging Oil Separator - Removal o Oil System Check Outline Drawings, 1-3 Piping, Aftercooler Piping, Heat Exchanger Piping, Parallel Piping, Series Pressure Regulator.4a-4. 4b-4 Prestart-up nstructions Protective Devices and Shutdown.4a-1. 4b-1 Purge Air Valve.4a4.

4b-4 Relief Valve.4a.l. 4b-2 Remote Overhead Cooler Reservoir Pressure Transducer.4a-4.4 b-5 Safety Precautions Separator Differential Pressure Shutdown. 4a-1, 4b-2 Sequencing, Automatic Change Sequencing, nstallation Sequencing, Operation Sequencing, Other Features Shuttle Valve.4a.4. 4b-4 Solenoid Valves - VC and VO. 4a-4, 4b-4 Solenoid Valves -TVC and TVO. 4b-4 Starter/Control Panel. 4a-4, 4b-5 STARTNG & OPERATNG PROCEDURES (SECTON 3) Starting The Unit, Cold Starting The Unit, Hot Stopping Unit System Pressure Transducer.

4a-4, 4b-5 Thermostatic Mixing Valve TROUBLE SHOOTNG (SECTON 9) Turn Valve.4b.4 Turn Valve Actuator.4b4 Water Cooled Unit nstallation Water Cooled Unit Piping Wiring Diagrams.4a.l2. 4b / Page iii 6 LLUSTRATONS FGURE # DESCRPTON SECTON/PAGE # a-1 4a-2 4a-3 4a-4 4a-5 4a-6 4a-7 4a-8 4a-9 4b-1 4b-2 4b-3 4b-4 4b-5 4b-6 4b-7 4b-8 4b-9 4b-1 O o Compression Cycle. Package - Starter Box.

Package - Controller & Starters. Package- Drive Motor &Air Filter. Package - Oil Filter, Oil Level Gauge, Mixing Valve, Minimum Pressure Valve & Check Valve. Package.Compressor &inlet Valve. Typical Compressor Room. Minimum Flow for Compression and Cooling.

Cold Weather installation. Heat Exchanger and Aftercooler Flow Chafl. Seties Piping. Parallel Piping.

Schematic Tubing Diagram. Blowdown Valve. Minimum Discharge Pressure Valve. ShuHle Valve. Control Schematic - Compressor Unloaded - Constant Speed Mode. Control Schematic -Compressor at Full Load.

Control Schematic - Compressor Unloaded - Low Demand Mode. Wiring Diagram. Auto Senty ES. Schematic Tubing Diagram.

Blowdown Valve. Shutile Valve. Turn Valve Actuator. Minimum Discharge Pressure Valve.

Control Schematic - Compressor at Full Load. Control Schematic - Compressor Unloaded - Constant Speed Mode. Control Schematic - Compressor Fully foaded - Low Demand Mode. Wiring Diagram. Auto Sentry ES. Flow Diagram - EBH, EBM, EBP.

Flow Diagram - EAP. Oil Flow Diagram Remote Overhead Mounted. Approximate Oil System Capacities. Cooler Drain Detail. Oil Level Gauge. Thermostatic Mixing Valve.

Water Control Valve. Temperature Chafl. Oil Separator.

Heavy Duty Air Filter. Nstallation of Coupling Cushions a-2 4a-2 4a-3 4a-3 4a-4 4a-9 4a-1 O 4a-1 1 4a-1 2 4a-1 3 4b-1 4b-2 4b-2 4b-3 4b-3 4b-4 4b-1 O 4b-11 4b-12 4b-13 4b / Page iv 7 SECTON 1 GENERAL NFORMATON FGURE COMPRESSON 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. Tapered roller bearings at the discharge end locate each rotor axially and carry all thrust loads and the remainder of the radial loads.

COMPRESSON PRNCPLE (Figure l-l) - Compression is accomplished by the main and secondary rotors synchronously meshing in a one-piece cylinder. The main rotor has four (4) helical lobes 90 apart.

The secondary rotor has six (6) matching helical grooves 60 apart to allow meshing with main rotor lobes. The air inlet port is located on top of the compressor cylinder 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. The compression cycle begins as rotors unmesh at the inlet port and air is drawn into the cavity between the main rotor lobes and secondary rotor grooves (A). When the rotors pass the inlet port cutoff, air istrapped in the interlobe cavity and flows axially with the meshing rotors (B).

As meshing continues, more of the main rotor lobe enters the secondary rotor grove, normal volume is reduced and pressure increases. Oil is injected into the cylinder to remove the heat of compression and seal internal clearances. Volume reduction and pressure increase continues until the air/oil mixture trapped in the interlobe cavity by the rotors passes the discharge port and is released to the oil reservoir (C). Each rotor cavity follows the same fillcompress-discharge cycle in rapid succession to produce a discharge airflow that is continuous, smooth and shock free. AR FLOW N THE COMPRESSOR SYSTEM (Figure 5-1, page2, Section 5) -Air enters theairfilterand passes through the inlet unloader valve to the compressor. 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 passes into the separator and separator housing where the oil is separated and passes through tubing connecting the separator housing and compressor. The air passes through the minimum pressure valve, discharge check valve and cooler, then to the plant air lines. LUBRCATON, COOLNG AND SEALNG - 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. 13-9/ Section 1 Page 1 8 f NSTRUMENT WNDOW DSPLAY / ad -EMERGENCY STOP = STARTER CONTROL BOX CONTROL EMERGENCY AUTO SENTRY ES CONTROL PANEL TRANSFORMER=. STOP 7 o FGURE STARTER BOX a MAN MOTOR STARTER. O FAN MOTOR STARTER FGURE1-3 - PACXAGE -CONTROLLER&STARTERS DRVE MOTOR AR FLTER.-y. r j COOLNG FAN FGURE 1-4- PACKAGE - DRVE MOTOR & AR FLTER 13-9/ Section 1 Page 2 9 SAFETY PRECAUTONS 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: DANGER Failure to observe these notices could result in injury to or death of personnel.keep fingers and clothing a way from revolving fan, drive coupling, etc. Do not use the air discharge from this unit for breathing - not suitable for human consumption. Do not loosen or remove the oil filler plug, drain plugs, covers, the thermostatic mixing valve or break any connections, etc. In the compressor air or oil system until the unit is shut down and the air pressure has been relieved. Electrical shock can and may be fatal.

Electra

Compressor unit must be arounded in accordance with the National Electrical Code. Aground jumper equal in size to the equipment ground conductor must be used to connect the compressor motor base to the unit base. Fan motors and must remain arounded to the main base through the starter mounting panel in accordance with the National Electrical Code. Open main disconnect switch and lockout before working on the control.

Disco nnect the compresso r unit from its power source, tag and lockout before working on the unit - this machine is automatically controlled and may start at any time. 13-9/ Section 1 page 4 10 WARNNG Failure to observe these notices could result in damage to equipment. Stopunit the if any repairs or adjustments on or around the compressor are required.

Disconnect the compressor unit from its power source, tag and lockout before working on the unit - this machine is automatically controlled and may start at any time. An Excess Flow Valve should be on all compressed air supply hoses exceeding 1/2 inch inside diameter. (OSHA Regulationj Section ).

Do not exceed the rated maximum pressure values shown on the nameplate. Do not ope rate unit if safety devices are not operating properly. Check periodically.

Never bypass safety devices. 13-9/ Section 1 Page 5 11 DiSCHARGE AR USED FOR BREATHNG WLL CAUSE SEVERENJURY OR DEATH. CONSULT FLTRATON SPECALST FOR ADDTONALFLTRATON ANDTREATMENTEQUPMENT TO MEET HEALTH AND SAFETY REGULATONS. AR AND OL UNDER PRESSURE WLL CAUSE SEVEREPERSONAL NJURY OROEATH.

SHUTDOWNCOMPRESSORAND RELEVE SYSTEM OF ALL PRESSURE BEFORE REMOVNG VALVES, CAPS, PLUGS, FTTNGS, BOLTS, AND FLTERS. 208 EAQ EAQ077 HGH voltage. ROTATNG MACHNERY.

AR AND 0L UNDERPRESSURE. MPROPERMODFCATON OF EQUPMENTWLL CAUSESEVERE PERSONAL NJURY OR DEATH. DO NOT MODFY UNT WTHOUT WRTTEN PERMSSON FROM MANUFACTURER.

218EAQ077 ROTATNG MACHNERYCAN CAUSE NJURY OR DEATH. KEEP ALL GUARDSAND SAFETY DEVCES N PLACE. O.% 0 0 UNT CANAUTOMATCALLY RESTART. CAN CAUSE PERSONAL NJURY OR DEATH.

KNOW MODE OF OPERATON BEFORE WORKNG ON OR NEAR THE MACHNE. 211 EAQ EAQ / Section 1 Page 6 12 ELECTRCAL SHOCK FROM MPROPER GROUNDNG CAN CAUSE NJURY OR DEATH.

GROUND UNT ANDRELATED EQUPMENTACCORDNGTO NATONAL ELECTRC CODE ANDLOCAL REGULATONS. 216EAQ077 AR AND OL UNDER PRESSURE. CAN CAUSE SEVERE PERSONAL NWRY OR OEATH. NSPECT OL RESERVOR FOR CRACKS AT LEAST ANNUALLY.

ELECTRCAL SHOCKCAN CAUSE NJURY OR DEATH. DSCONNECTALL CRCUTS BEFORE WORKNG ON T HS CONTROL. SEE WRNG DAGRAM. 217EAQ077 ELECTRCAL ARCNGCAN CAUSEA FRE WHENUNT S MOUNTEDONA COMBUSTBLE SURFACERESULTNG N PERSONALNJURY OR PROPERTY DAMAGE. UNT MUST BE MOUNTEDON A FLOOR PLATE EXTENDNG ONALL SDES. SEE NSTALLATON DRAWNGFOR PROPER MACHNE DAMAGEOR NJURY CANOCCUR DUETO MPROPER LFTNG.

D0 NOT LFT MACHNEWTH THE MOTOREYEBOLT EAQ EAQ / Section 1 Page 7 13 SECTON 2 NSTALLATON GENERAL - On receipt of the unit, check for any damage that may have occurred during transit or handling. Report any damage or missing parts as soon as possible. cautlon Do not electric weld on the compressor or base; bearings can be damaged by passage of current. LFTNG UNT - Proper liftingand/or transporting methods must be used to prevent damage.

CAUTON r Lift compressor unit by base only. Do not use other places such as enclosure, motor, compressor oil discharge manifold and piping as lifting points.

DANGER 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. Lifting slots are provided in the base for towmotor use.

Unit fray also be moved into location by rolling on bars. T from the compressor operating area. Atypical inlet-outlet air flow arrangement is shown in Figure 2-1. AR-COOLED UNT - A combination oil/aftercooler is supplied as standard equipment on all air-cooled units. The air-cooled unitwith the standard enclosure requires sufficient flow, Figure 2-2, for the compressor oil/aftercooling system and for electric motor cooling. Air is drawn into the unit at the motor side of the enclosure and is exhausted at the oil cooler side.

Do not block the air flow to and from the unit. Allow three and one-half (3-1/2) feet to the nearest obstruction on the starter end and control box end of the unit.

Allow three (3) feet to the nearest obstruction above and on other sides of unit. For continuous efficiency, oil cooler cores must be periodically cleaned with either vacuum or compressed air. warnng For aluminum oil coolers, do not use any cleaning solution that is not compatible with aluminum. Use of improper solution may result in damage to cooler.

LOUVEREO EXHAUST FAN LOUVERED WNDOW Wlfioow.L:,!,.byi LJ. AR AR ln N.

UNT 1 A LOCATON - The compressor should be installed, whenever possible, in a clean, well-lighted, well-ventilated area with ample space all around for maintenance. Select a location that provides a cool, clean, dry source of air. N some cases it may be necessary to install the air filter at some distance from the compressor to obtain proper air supply. 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 FGURE TVPCAL COMPRESSOR ROOM Minimum Air Flow. For Compression And cooling (Cubic Feet/Minute) HP Air Cooled Water Cooled 40& 50 6,500 1,400 60,75,500 1,700.

80 F inlet air FGURE / Section 2 Page 1 14 MOTOR COMPRESSOR / /r 8 FT. PLYWOOD fence- 8 FT. PLYWOOD FENCE WELL MAN RADANT 2-CLEMENT HEATER (OR EOUAL) RH400 W TH (2) RH4502 ELEMENTS - 2 REO D WATTS EACH L RESERVOR 7 4 ET. Pb. / / / / / DANT 2-ELEMENT ELEVATON VEW HEATER (OR EOUAL) RH7000 WTH (2) RH7502 ELEMENTS Z REOD 6200 WATTS EACH FGURE COLD WEATHER NSTALLATON f wet cleaning is required, shield motor and spray on a mild soap solution and flush with clean water. WATER-COOLED UNTS - The water-cooled unit with the standard enclosure requires sufficient airflow, Figure 2-2, previous page, for electric motor cooling. Air is drawn into the unit at the top of the enclosure and is exhausted at the motor side.

Do not block airflow to and from unit. Allow three and one-half (3-1/2) feet to the nearest obstruction on the starter end and control box side of the unit. Allow three (8) feet to the nearest obstruction above and on other sides of the unit. FOUNDATON - The G-D Rotary Screw compressor requires no special foundation, but should be mounted on a smooth, solid surface. Whenever possible installthe unit near level. Temporary installation may be made 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 moving vehicles may require the use of mounting bolts and shims to provide uniform support for the base. OL RESERVOR DRAN - The oil drain is piped from the bottom of the reservoir to the side of the frame. This drain is approximately 4.50 inches above the floor level. F this is not sufficient to conveniently drain the oil some other methods of providing drain are: 1. Elevate the compressor unit on raised blocks to obtain the desired drain height. CAUTON f 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 hot air from the oil cooler end and over temperature operation. Construct an oil sump or trough below the floor level and pump or bail the drained oil.

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 enclosure.

Service doors are provided for maintenance access. Be sure to allow enough space around the unit for the doors to open completely. Any of the enclosure doors maybe removed by opening the door and lifting it up slightly to disengage the hinges. The motor inspection/air filter service panel is held by two latches and lifts away from the enclosure. The air outlet panel is attached by screws to the enclosure and is not readily removable. NSTALLATON FOR COLD WEATHER OPERATON - tis recommended that whenever possible the unit be installed inside a shelter that will be heated to tempera- 13-9/ Section 2 Page 2 15 tures above freezing (32 F, O C).

This will eliminate many of the problems associated with operating the units outside in cold climates where freezing rain, drifting snow, freezing condensate and bitter cold temperatures are encountered. Refer to Engineering Data Sheet for the advantages of using the heat recovered from rotary compressors. This heat recovery could easily pay for an adequate shelter for the unit. When an outside installation must be made, the precautions required will depend on how severe the environment. The following are general guidelines for outside installations: Cold Weather (Down To + 10 F) Be sure all control lines, drains and traps are heated to avoid freezing of condensate.

Heat tape with thermostat control is generally satisfactory for this purpose and can be obtained at various local plumbing or hardware outlets at nominal cost. F an air-cooled aftercooler isto be used, provisions to bypass the aftercooler should be made. Since cold air contains very little moisture, successful operation can be achieved without the aftercooler. Provide at least some simple shelter such as a plywood windbreak to protect against drifting snow. Use only AEON M 9000 lubricant.

Monitor unit carefully during start-up and operation to be sure it is functioning normally. Specify NEMA 4 enclosure for electrical devices. Extreme Cold Weather Operation (Down To -40 F) n addition to the above, the following should be provided: 1. T will probably be necessary to provide shutters or to block off part of the cooler in some manner since the cooler isgreatly oversized for operation inthese low temperatures. Since shutters are not provided as a factory option, blocking off a portion of the cooler with plywood should be satisfactory. Auto operation should not be used in extreme environments. Some means of providing heat during shutdown should be provided.

There are various methods to accomplish this, but since openings are not provided for sump heaters, the use of radiant heaters is recommended. The heaters should be sized to provide at least a + 10 F environment for coolers, motor and sump. Figure 2-3, previous page, shows how these might be located in a typical installation and sizes required.

Remember unsheltered (outside) installations should be avoided where possible. Nstallation 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 for the advantages of using the heat recovered from rotary compressors. This heat recovery could easily pay for an adequate shelter for the unit. AUXLARY AR RECEVER - An auxiliary air receiver is not required if the piping system is large and provides sufficient storage capacity to prevent rapid cycling. When used, an air receiver should be of adequate size, provided with a relief valve of proper setting, a pressure gauge and a means of draining condensate.

MOSTURE SEPARATOR/TRAP - Since unit is equipped with a built-in aftercooler, a combination moisture separator and trap is furnished with the unit. CONTROL PPNG - External control piping is not necessary since the unit is factory wired and piped for the control system specified. NLET LNE - 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 entering the compressor. F welded construction is used, the line must be shot blasted and cleaned to remove welding scale. N either case, the inlet line must be coated internally by galvanizing or painting with a moisture and oil-proof sealing lacquer. Up to ten (10) feet in length, the inlet line should be the full size of the inlet opening on the compressor. F an extra-long line is necessary, the pipe size should be increased according to nlet Line Chart below.

NLET LNE LENGTHS Length of nlet Line Diameter of Pipe Size Oto 10 Feet. Same as Compressor nlet Opening 10to 17 Feet. One Size Larger Than nlet Opening 17t038 Feet.Two Sizes Larger Than nlet Opening 13-9/ Section 2 Page 3 16 HEAT EXCHANGER Water Temperature To Heat Exchanger HP Model 60 F 70 F 80 F 90 F Max Water Flow (GPM) Approx. 90 F Water Temp. (PS) 40 HP 40 HP 50 HP 50 HP EBHSHA EBHSHC EBHSJA EBHSJC HP 60 HP 75 HP 75 HP 100 HP 100 HP 100 HP EBMSKA EBMSKC EBMSLA EBMSLC EBPSMA EBPSMC EAPSMD AFTERCOOLER Water Temperature To Heat Exchanger HP Model 60 F 70 F 80 F 90 F Max Water Flow (GPM) Approx.

90F Water Temp. (PS) 40 HP 40 HP EBHSHA EBHSHC HP 50 HP EBHSJA EBHSJC Less than 1 PS for 60 HP 60 HP EBMSKA EBMSKC any flow rate shown 75 HP 75 HP EBMSLA EBMSLC in the table. 100 HP 100 HP 100 HP EBPSMA EBPSMC EAPSMD FGURE 2-4- HEAT EXCHANGER (OL COOLER-AFTERCOOLER) APPROXMATE WATER FLOW - U.S. GALLONS/MNUTE Accessibility for inlet air filter servicing must be considered when relocating the filters from the unit to a remote location.

DSCHARGE SERVCE LNE - The discharge service line connection on both water-cooled and air-cooled units is made at the right hand corner ofthe unit, viewed from the opposite end from control panel side. When manifolding two or more rotary screw units on the same line, each unit is isolated by the check valve in the unit discharge line. F a rotary screw unit is manifolded to another compressor, be sure the other compressor has a check valve in the line between the machine and the manifold. Fa rotary screw and a reciprocating compressor are manifolded together, an air receiver must be located between the two units. DANGER Discharge air used for breathing will cause severe injury or death.

Consult filtration specialists for additional filtration and treatment equipment to meet health and safety standards. BLOWDOWN VALVE PPNG - The blowdown valve is fitted with a muffler for operation indoors. Fthe installation requires, the muffler may be removed and the blowdown valve piped to the outside with a pipe size the same as the blowdown valve outlet connection. 13-9/ Section 2 Page 4 17 C76683 AFTER COOLER WATER N A.ATER THERMOSTATC MXNGVALVE ,. WATER NTROL V/UVL VALVE HEAT EXCHANGER OUT 1.J. L?JER AR N.