Emax ERS0070001 User manual

EMAX Rotary Screw Compressors
1

Operating Instructions
2
Variable Speed Drive Information ...................2
Model Specication Charts ..........................3-4
SafetyInformation............................................4
Tag Denitions .........................................4
Basic Guidelines ..................................... 5
Breathable Air .........................................5
Pressurized Components ........................ 5
Personal Protective Equipment ................ 5
Inspection ........................................................6
Forklift Safety..........................................6
Lifting Safety ........................................... 6
Installation.......................................................7
Area......................................................7
Piping ..................................................... 7
Safety Steps............................................ 7
Installing................................................. 8
Oil Check ................................................9
Electrical Installation ..............................9
Motor Rotation......................................10
System Description........................................11
Air Process ............................................ 11
Lubrication Process ..............................11
System Components .....................................11
PLC (Programmable Logistical Control) 11
Maintenance Notications....................11
Setting:oC/oF;BAR/PSI;Lang;Time/Date12
Working Pressures .................................13
Clock Timer Settings .............................. 14
Working Timer – Unloading Delay .........15
Maintenance Notications .....................16
Resetting Maintenance Alarms ......... 16-19
Mechanical Components.................20-25
Resetting Overload Protection ............... 21
Operation .......................................................25
Safety Rules.....................................25-26
Initial Checks ........................................ 26
Start-Up ...............................................27
Power Outages ...................................... 27
Storage ................................................28
Restarting Procedure ............................28
Maintenance..................................................28
Safety Steps ..................................28-29
Lubricating Oil .......................................29
Changing Oil .........................................29
Oil Capacities ........................................30
Belts .....................................................30
System Pressure ...................................31
Safety Valve ........................................... 31
Air/Oil Separator Filter ........................... 31
OPTIONAL: Cabinet Intake Filter(s) ...... 31
Maintenance Schedule ................................. 32
Troubleshooting .......................................33-37
Wiring Diagrams ............................................38
Warranty.........................................................42
Variable Speed Drive
Contents
The variable speed drive is an auxiliary feature available on all EMAX compressors. A variable speed drive or VSD
regulates amp draw during start-up and motor speed during operation according to air demand.
All EMAX compressors are equipped with a VSD compliant motor ventilated electrical box & adequate space in
compressor cabinet for easy installation. The electronic controller (PLC) for the compressor unit provides start/stop
command and display fault status for the VSD device.
• Be sure to install VSD in a clean, dustfree
environment.
• Toconverttovariablespeeddrive,contactEMAX
 customerserviceformoreinformation,
1-877-283-7614
NOTICE

EMAX Rotary Screw Compressors
3
EMAX Rotary Screw Systems: 25 Hp - 60 Hp (VSD Compliant)
EMAX Electric Operated, Two-Stage, 5-10 Hp Piston Air Compressors
Model No. ERS0070001 ERS0100001 ERS0070003 ERS0100003 ERS0150003 ERS0200003
Description Single Phase Single Phase
Dual Voltage
Three Phase
Dual Voltage
Three Phase
Dual Voltage
Three Phase
Dual Voltage
Three Phase
Dual Voltage
Motor 7.5HP 10HP 7.5HP 10HP 15HP 20HP
Amp Draw
32 40 230V: 18
460V: 9
230V: 24
460V: 12
230V: 36
460V: 18
230V: 24
460V: 18
RPM 1750 1750 1750 1750 1750 1750
Voltage 208/230 208/230 208/230/460/575 208/230/460/575 208/230/460/575 208/230/460/575
SCFM @ 100 PSI 29 45 29 45 62 85
Start Type Magnetic Starter Magnetic Starter Y-Delta & VSD Y-Delta & VSD Y-Delta & VSD Y-Delta & VSD
Drive Type Belt Belt Belt Belt Belt Belt
Air End Model B40 B40 B40 B40 B60 B60
Noise DB(a) 62 64 62 64 67 85
Outlet Size NPT 3/4” NPT 3/4” NPT 3/4” NPT 3/4” NPT 1” NPT 1”
Oil Capacity 1-1/3gal. (3.8 L) 1-1/3 gal. (3.8 L) 1-1/3gal. (3.8 L) 1-1/3 gal. (3.8 L) 1-1/2 gal (6 L) 1-1/2 gal (6 L)
Dimensions 26”x34”x43” 26”x34”x43” 26”x34”x43” 34”x24”x43” 32”x37”x50” 32”x37”x50”
Weight (lbs.) 562 562 562 562 788 804
L•W•H
(inches)
Model No. ERS0250003 ERS0300003 ERS0400003 ERS0500003 ERS0600003
Description Three Phase
Dual Voltage
Three Phase
Dual Voltage
Three Phase
Dual Voltage
Three Phase
Dual Voltage
Three Phase
Dual Voltage
Motor 25HP 30HP 40HP 50HP 60HP
Amp Draw 230V: 60
460V: 30
230V: 72
460V: 36
230V: 96
460V: 48
230V: 120
460V: 60
230V: 144
460V: 72
RPM 1750 1750 1750 1750 1750
Voltage 208/230/460/575 208/230/460/575 208/230/460/575 208/230/460/575 208/230/460/575
SCFM @ 100 PSI 108 129 188 235 261
Start Type Y-Delta & VSD Y-Delta & VSD Y-Delta & VSD Y-Delta & VSD Y-Delta & VSD
Drive Type Belt Belt Belt Belt Belt
Air End Model B101 B101 CA116D B170 B170
Noise DB(a) 73 75 79 79 81
Outlet Size NPT 1” NPT 1” NPT 1-1/4” NPT 1-1/4” NPT 1-1/4”
Oil Capacity 3 gal. (9.5 L) 3 gal. (9.5 L) 5-1/2 gal. (11.4 L) 5-1/2 gal. (15.1 L) 5-1/2 gal. (15.1 L)
Dimensions 40”x38”x57” 40”x38”x57” 53”x55”x66” 53”x55”x66” 53”x55”x66”
Weight (lbs.) 1205 1205 2120 2120 2120
L•W•H
(inches)

Operating Instructions
4
This manual contains very important information on SAFETY and how to PREVENT EQUIPMENT PROBLEMS. The
following will help in understanding this information:
DANGER indicatesanimminentlyhazardoussituationwhich,ifnotavoided,will result
in death or serious injury.
WARNINGindicatesapotentiallyhazardoussituationwhich,ifnotavoided,could
result in death or serious injury.
CAUTIONindicatesapotentiallyhazardoussituation,whichifnotavoided,may
result in minor or moderate injury.
NOTICEindicatesimportantinformationthatifnotfollowed,may cause damage to
equipment.
Read all manuals included with this product carefully. Be thoroughly
familiar with the controls and the proper use of the equipment.
DANGER
WARNING
CAUTION
NOTICE
Safety
EMAX Rotary Screw Systems: 75 Hp - 200 Hp (VSD Compliant)
Model No. ERS0750003 ERS1000003 ERS1250003 ERS1500003 ERS1750003 ERS2000003
Description Three Phase
Dual Voltage
Three Phase
Dual Voltage
Three Phase
Dual Voltage
Three Phase
Dual Voltage
Three Phase
Dual Voltage
Three Phase
Dual Voltage
Motor 75HP 100HP 125HP 150HP 175HP 200HP
Amp Draw
230V:180
460V: 90
230V:240
460V: 120
230V: 300
460V: 150
230V: 360
460V: 180
230V: 420
460V: 210
230V: 480
460V: 240
RPM 1750 1750 1750 1750 1750 1750
Voltage 208/230/460 208/230/460 208/230/460 208/230/460 208/230/460 208/230/460
SCFM @ 100 PSI 353 424 570 706 812 883
Start Type Y-Delta & VSD Y-Delta & VSD Y-Delta & VSD Y-Delta & VSD Y-Delta & VSD Y-Delta & VSD
Drive Type Direct Drive Direct Drive Direct Drive Direct Drive Direct Drive Direct Drive
Air End Model E25G E25G AA-1030R E75G E75G E75G
Noise DB(a) 78 80 83 83 87 87
Outlet Size NPT 2” NPT 2” NPT 3” NPT 3” NPT 3-1/2” NPT 3-1/2”
Oil Capacity 8 gal. (30 L) 8 gal. (30 L) 18 gal. (70 L) 18 gal. (70 L) 21 gal. (80 L) 21 gal. (80 L)
Dimensions 56”x85”x72” 56”x85”x72” 63”x104”x75” 63”x104”x75” 68”x105”x78” 68”x105”x78”
Weight (lbs.) 3496 3496 5806 5806 6538 6538
L•W•H
(inches)

EMAX Rotary Screw Compressors
5
1. NEVERuseairfromthiscompressorforbreathableairexceptinfullcompliancewithOSHA  
 Standards29CFR1910andanyotherFederal,StateorLocalcodesorregulations.
2. DO NOT use air line anti-icer systems in air lines supplying respirators or other equipment used to
produce breathable air. DO NOT discharge air from these systems in unventilated or other conned
areas.
Death or serious injury can result from inhaling compressed air
without using proper safety equipment. See OSHA standards on safety
equipment.
DANGER
This equipment is supplied with a pressure vessel protected by a relief valve. DO NOT attempt to open valve while
the machine is under pressure.
BesurealloperatorsandothersaroundthecompressoranditscontrolscomplywithallapplicableOSHA,Federal,
StateandLocalregulations,codesandstandardsrelatingtopersonalprotectiveequipment.Thisincludesrespiratory
protectiveequipment,protectionfortheextremities,protectiveclothing,protectiveshieldsandbarriers,electrical
protectiveequipment,andpersonalhearingequipment.
Breathable Air
Pressurized Components
Personal Protective Equipment
CALIFORNIA PROPOSITION 65
This product or its power cord may contain chemicals known to the State
of California to cause cancer and birth defects or other reproductive harm.
Wash hands after handling.
WARNING
Basic Guidelines
1. Allowonlytrained,authorizedpersonswhohavereadandunderstoodtheseoperatinginstructionstouse
 thiscompressor.Failuretofollowtheinstructions,proceduresandsafetyprecautionsinthismanualcan
result in accidents and injuries.
2. NEVERstartoroperatethecompressorunderunsafeconditions.Tagthecompressor,disconnectand
lock-out all power to it to prevent accidental start-up until the condition is corrected.
3. Install,useandoperatethecompressoronlyinfullcompliancewithallpertinentOSHAregulationsandall
 applicableFederal,State&LocalCodes,standardsandregulations.
4. NEVER modify the compressor and/or controls in any way.
5. Keep a rst aid kit in a convenient place. Seek medical assistance promptly in case of injury. Avoid infection
by caring for any small cuts and burns promptly.

Operating Instructions
6
AforkliftmaybenecessaryforunloadingtheEMAXcompressor.andrequiresacertiedforkliftoperator,usingall
forklift safety measures. Refer to gure 1 for safe unloading procedures.
Do not operate unit if damaged during shipping, handling or use.
Bursting may result, causing injury or property damage.
Remove shipping brackets from each corner of mounting base before
operating compressor. Refer to Figure 2.
Make sure pallet-mounted compressors are rmly secured to the
pallet before moving. NEVER attempt to move a compressor that is
not secure as serious injury or property damage could occur.
Priortousingthecompressor,checkforexternaldamagethatmighthaveoccurredduringtransit.
WARNING
1. Be sure load is secure and well balanced before moving
compressor.
2. Make sure forks are fully engaged and tipped back before
lifting or moving compressor.
3. Keep load as low as possible and observe safe operating
practices.
1. Carefully inspect all lifting equipment and make sure it is in good
condition. Rated capacity should exceed compressor weight. the
lifting hook has a functional safety latch or equivalent and is
properly attached to lifting feature.
2. Make sure lifting points are in good condition and tighten any loose
nuts or bolts before lifting.
3. Use provided lifting feature or appropriate sling. A sling must be
used when moving compressor with a helicopter or other air borne
 equipment.BesuretofollowOSHAstandards29CFR1910 
Subpart N.
4. Use guide ropes or equivalent to prevent twisting or swinging of the compressor while it is in the air and
NEVER attempt to lift in high winds. Keep compressor as low to the ground as possible.
5. Keep persons away and make sure no one is under the compressor while it is lifted.
6. Only use lifting features provided for entire compressor package. NEVER use bolts or other hooks on
invididual components to move the compressor.
7. Put compressor on level surface that can support the weight of the compressor and loading equipment.
Forklift Safety
Lifting Safety
Inspection
WARNING
NOTICE

EMAX Rotary Screw Compressors
7
Safety Steps
1. Installcompressorinaclean,wellventilatedandwelllitarea.Makesureairinletisawayfromexhaustfumes
 orothertoxic,noxiousorcorrosivefumesorsubstances.Installationareamustmaintainlowrelative 
humidity and a temperature range between 35o – 110 o F (2o – 43 o C). This unit must be kept under roof
and away from rain, snow, etc.
2. Clearances around compressor. At least:
 • 24inchessidesandback
 • 3feetinfrontofcompressor.
3. Make sure compressor base is on a hard,atsurface
and anchored securely.
4. Ifinstallationisabovetherststoryofabuilding,use
appropriate vibration insulation.
1. Installappropriateow-limitingvalvesasnecessary,accordingtopipesize(s)andrunlengths.Thisreduces
 pressureincaseofhosefailure,perOSHAStandard29CFR1926.302(b)(7).
2. Flow-limitingvalvesarelistedbypipesizeandratedCFM.Selectappropriatevalvesaccordingly,inaccordance
with the manufacturer’s recommendations.
3. Do not install check valve as compressor has internal check valve.
Installation
Area
Piping
Exhaust air from this unit can be used to supplement environment heat. Install unit in separate room then create duct
system as shown in gure 3.
Inenvironmentswherenedustiscommon,suchasgraniteorconcrete
plants,thecompressorMUSTbeinstalledinaseparatearea
with dedicated ventilation. Failure to provide dust free operating area
voids the warranty.
This compressor unit is equipped with internal
rubber vibration isolators. To avoid internal pump
damage,DO NOT use an additional rubber
mounting surface when installing compressor.
Tank Sizing Guideline: Tank capacity must be
at least 1.2 gallons (5.3 L.) for every CFM of air
produced by compressor. This eliminates wear on
internal pump parts.
NOTICE
NOTICE
NOTICE

Operating Instructions
8
1. InstallpipingasshowninFigure4.RefertoFigure5forrecommended,closedloopinstallation.
2. Makesureanytube,pipeorhoseconnectedtotheunitcanwithstandoperatingtemperaturesandretain
pressure.
3. Install appropriate ASME code safety valves and adequate condensate drains on piping system.
4. Never use reducers in discharge piping. Keep all piping and ttings the same size in the piping system to
help prevent pressure drops
Never use plastic (PVC) pipe for compressed air. Serious injury or
death could result.
Installing
WARNING
Minimum Pipe Size For Compressed Air Lines
(Pipe size shown in inches)
SCFM
20
40
60
100
125
150
200
25 ft.
3/4
3/4
3/4
1
1-1/4
1-1/2
2
50 ft.
3/4
1
1
1
1-1/4
2
2
100 ft.
3/4
1
1
1
1-1/2
2
2
250 ft.
1
1
1
1-1/4
1-1/2
2
2

EMAX Rotary Screw Compressors
9
TO PREVENT DEATH OR SERIOUS INJURY, ONLY TRAINED AND
AUTHORIZED PERSONNEL SHOULD INSTALL AND MAINTAIN THIS
COMPRESSOR IN ACCORDANCE WITH ALL APPLICABLE FEDERAL,
STATE AND LOCAL CODES, STANDARDS AND REGULATIONS.
FOLLOW ALL NEC (National Electric Code) STANDARDS ESPECIALLY
THOSE CONCERNING EQUIPMENT GROUNDING CONDUCTORS.
DO NOT OVERFILL. Residual oil may still be in the
compressor.The above capacities can be used for
guidelines, but use the upper arrow ll line on the
sight glass (See page 7). Over lling causes oil to
blowout the inlet valve and through the air lter, also
oil could push past the separation system resulting
in oil in the air lines.
Use only genuine Airbase Industries Rotary
ScrewOil,SKUOIL003.Forfoodmanufacturing
applications,useAirbaseIndustriesRotaryScrew
Oil SKU OIL001. Use of any other product may
cause product damage and void the warranty. Refer
to warranty statement for oil requirements.
DANGER
Oil Check
Oil Capacities:
Electrical Installation
5. Forpermanentinstallationsofcompressedairsystems,determinetotallengthofsystemandselectcorrect
pipe size. Bury underground lines below frost line and avoid areas where condensation could build-up and
freeze.
6. Test entire piping system beforeundergroundlinesareburied,andndandrepairallleaksbeforeusing
compressor.
This unit is shipped with oil in it and ready to operate. Check for proper oil level before operating the compressor.
Compressor must be off at least 45 min. - 1 hr. before checking to ensure accurate reading. Refer to gure 6.
7.5 – 10 HP – 5 liters (1-1/3 gal)
15 – 20 HP – 6 liters (1-1/2 gal)
25 – 30 HP – 11 liters (3 gal)
40 – 60 HP – 20 liters (5-1/2 gal)
75 – 100 HP – 30 liters (8 gal)
125 – 150 HP – 70 liters (18 gal)
175 – 200 HP – 80 liters (21 gal)
CAUTION
NOTICE
NOTICE

Operating Instructions
10
Afterelectricalinstallationiscomplete,checkthedirectionofthemotorrotation.
1. Lightly push START and STOP buttons on the instrument panel. View unit while facing the drive pulleys
(from the back). Check directional arrows on air end of pump
2. Ifmotorshaftisnotturningcounterclockwise,disconnectpowertoterminalblockthenexchangeanytwo
of the three power leads. Re-check rotation.
1. Follow all NEC and local codes for electrical wiring.
Allow only authorized EMAX service person or
certied electrician to install electrical components.
2. Put unit on dedicated circuit and make sure no
other electrical equipment is wired into it.
Failure to wire unit on independent circuit
can cause circuit overload and/or imbalance in motor
phasing. Install proper No Fuse Breaker (NFB)
 accordingtokWoutputofcompressor.
3. Ensure incoming service has adequate ampere
rating.
4. Ensure supply line has the same electrical
 characteristics(voltage,cyclesandphase)asthe
machine.
5. Refer to amp load information on motor tag and
use correctly sized wiring. Be sure to consider
distance between power supply and machine.
6. Install surge protection device between power supply
and compressor electrical cabinet.
7. Make sure to install properly sized breakers and
fuses.
8. The unit must be properly grounded. DO NOT
connect ground wire to air or cooling lines. Connect
ground wire to grounding lug in the compressor
electrical cabinet.
IMPROPERLY GROUNDED ELECTRICAL COMPONENTS ARE SHOCK
HAZARDS. MAKE SURE ALL THE COMPONENTS ARE PROPERLY
GROUNDED TO PREVENT DEATH OR SERIOUS INJURY.
WiringforVariable Speed Drive or typical Wye-
Delta Start. See page 1 for advantages of VSD.
DANGER
Motor Rotation

EMAX Rotary Screw Compressors
11
TheEMAXcompressorishighlyefficientandprovidesreliableperformancewithlowwearparts,lowvibrationand
quietoperation.Anelectricmotor,whichiscontrolledbyaProgrammableLogisticalController(PLC),runsthe
compressor and is actuated with a belt drive system. The belt drive system utilizes pulleys to connect the motor to the
mainrotorshaft,oradirect-drivecouplingsystem.
Air enters the system through the suction valve which has an air/suction lter to remove dust. The air is mixed with
thelubricatingoilandowsintotheair/oilseparatortank.Itpassesthroughanair/oilseparatorlterthenthrougha
minimum pressure check valve. Air then passes through an air cooled after cooler then into storage tank.
Pressure in the oil/air separator presses lubricating oil into the oil cooler. The oil is cooled and ltered then divided
into two parts. One part is injected into the compression chamber from the lower end of the rotary compressor body
to cool the compressed air. The other part passes through the two ends of the compressor body and is used to
lubricate internal roller bearings of rotary compressor pump and gear drive. The two parts meet at the bottom of the
compression chamber and are drained out with the compressed air.
The PLC is the compressor controller and has a display screen for system information. The electric circuitry of the
PLC can be divided into two systems. One is for the starting panel to congure Y Delta starting. The other is for
internalcomputercontrolsandisexplainedinmoredetailinthePLCmanual.Ifthereisanyfailure,contactEMAX
service department. Refer to gure 8 for explanation of buttons.
Six automatic maintenance notications are built into the EMAX compressor system designed to signify when
maintenance is due for certain components. The user is notied by a message displayed on the control panel. Refer
to the following chart for the components that have automatic maintenance notications and their factory set lifetimes.
Air Process
Lubrication Process
PLC (Programmable Logistical Controller)
Maintenance Notications
System Description
System Components
1. ON Button: Press to start compressor
2. OFF Button: Press to stop compressor
3. Emergency Stop: Use only for emergency to stop
compressor immediately! Use normal stop at all other
times.
4. Enter/Conrm Button: Press to enter a changed
setting or to conrm a menu selection.
5. Down Button: Press to scroll down through menus
while changing settings or menu selections.
6. Up Button: Press up to scroll through menus while
changing settings or menu selections.
Factory Set Passwords: Level 1 = 22
Level 2 = 4444
Level 3 = 666666

Operating Instructions
12
Main screen starting point.
Press the Enter button to see the current
ashingtemperaturesscale,oC(Celcius)or
oF (Fahrenheit). Use the Up & Down arrows
tochange,ifdesired,andthenpressEnter
to set the value.
Nowthecurrentashinggaugepressure
setting,BAR(metric)orPSI(Am.Std)
shows in display. Use the Up & Down
arrowstochange,ifdesired,andthenpress
Enter to set the value.
Setting:oC/ oF; BAR/PSI; Language; Time/Date
Press the Up arrow for setting temperature
scale,gaugepressure,language,time&
date.
34
2
1

EMAX Rotary Screw Compressors
13
Working Pressures
The current language setting now shows in
the display. Use the Up & Down arrows to
change to the desired language and then
press Enter.
Toaccessthesesettings,startwiththe 
main screen shown below.
Press the two arrow keys at the same time to
bring up the Password Level Selection- Press
down arrow 2 times to select Level 3 then
press enter.
Thecurrentdate,dayofweekandtime
now shows in the display. Starting with the
ashingdate,usetheUp&DownArrows
to change the setting and then press
Enter.Nowthenextparameterashes
and it can be changed. The day of the
weekisshownbyDay1=Monday,Day
2=Tuesday,etc.Thecurrenttimecanbe
set;hours:minutes,24hourtime.Onceset,
press the Enter button to return to the main
screen.
Thesepressuressettingsarethecompressor’soperatingpressuresettings,TopRangeTransducer,HighPressure
Alarm,StopPressure,etc.(Seechartonpage17ofPLCmanual.)
5
12
6

Operating Instructions
14
Clock Timer Settings
Arrowdownto0)WORKINGPRESSURES
and press Enter.
Enter in the 6 Digit Password 6 6 6 6 6 6,by
using the Up Arrow to set the digit to 6 then
pressEntertomovetothenextdigit,andpress
theUpArrowtosetto6,repeatuntillastdigitis
setto6,thenpressEnter.
WP1(TopRangeTransducerpressure)shows
in the display. Press Enter and the pressure
settingashesandcanbechangedbyusing
the Up & Down Arrows. Press Enter again to
conrm the setting.
Press Down Arrow to see and/or change
the other pressure settings. Once satised
withallsettings,pressDownArrowuntil
you are back to the Main Screen.
Press both Up & Down Arrows
again if the wrong password is
entered.
NOTICE 4
3
56
Thisfeatureallowstheoperatortosetthestartandstoptimes(in24hourtime)ofthecompressor,everydayofthe
week.
Up to 3 time slots can be programmed per day.
Example:
Day 1 (Monday)
1 – ON 07:30 – OFF 12:30
2 – ON 13:30 – OFF 17:30
3 – ON 18:30 – OFF 23:30
OnceDay1isset,Day2throughDay7canbeprogrammed.(Seepage17ofthePLCmanualformoredetails.)

EMAX Rotary Screw Compressors
15
Working Timer - Unloading Delay
Toreducewear&tearofthecompressorcomponents,anunloadingdelaytimeissetinthecontrolsthatshuts-down
the compressor after the unloading delay time has counted down.
Ifthecompressorisrunninginslowperiodsoftheday,thecompressorcouldrunforlongperiodsintheunloading
stage,causingunnecessarycomponentwearandelevatedenergycosts.
Withanunloaddelaytimeof10minutes,forexample,thecompressorwouldrunfor10minutesintheunloading
stageandthenitwouldshutdownandenterastand-bymode.Thenwhenthelowpressuresettingisreached,the
compressor automatically starts again.
Enter in the 6 Digit Password 6 6 6 6 6 6, by using the Up
Arrow to set the digit to 6 then press Enter to move to the
nextdigit,andpresstheUpArrowtosetto6,repeatuntil
lastdigitissetto6,thenpressEnter.
Tovieworsettheunloaddelaytime,start
with the main screen shown below.
Press the two arrow keys at the same time to
bring up the Password Level Selection- Press
down arrow 2 times to select Level 3 then press
enter.
Arrowdownto5)WORKINGTIMERandpress
Enter.
12
3
It’s recommended not set the
unload delay too low. If the
compressor starts more than
5 times per hour, it could cause unnecessary wear to
components.
Press both Up & Down Arrows
again if the wrong password is
entered.
NOTICE
NOTICE

Operating Instructions
16
Resetting Maintenance Alarms
Maintenance Notications
Following replacement times are important for safe
operation. Remember to clear lifetime and reset
maintenance timer after replacements are made.
Refer to PLC manual for more details.
ArrowdowntoWt4(Unloaddelaytime).Press
Enterandthetimeashesandcanbechanged
by using the Up & Down Arrows. Press Enter
again to conrm the setting. (See chart on page
17 of PLC manual.)
Oncesatisedwithallsettings,pressDown
Arrow until you are back to the Main Screen.
Press the two arrow keys at the same time to
bring up the Password Level Selection- Press
down arrow 2 times to select Level 3 then press
enter.
First screen for resetting alarms.
4
5
7
6
Component (PLC) Lifetime (hrs)
Air Filter CAF 4000
Oil Filter COF 4000
Air/Oil Separator Filter CSF 4000
Lubricating Oil C--= 4000
Check Compressor C--h 4000
Motor Bearing Grease BL 10,000

EMAX Rotary Screw Compressors
17
Enter in the 6 Digit Password 6 6 6 6 6 6, by
using the Up Arrow to set the digit to 6 then
pressEntertomovetothenextdigit,andpress
theUpArrowtosetto6,repeatuntillastdigitis
setto6,thenpressEnter.
Using Enter move over to the SET: number and
changeto4000,usingtheUp&DownArrows.
ThenusingtheEnterbutton,changeNOto
YES then press Enter and hours are reset.
Arrowdownto6)OIL/FILTER-HOURSand
press Enter
CHANGEAIRFILTERshowsinthe
display and press Enter.
PressDownArrowandCHANGEOILFILTER
shows in the display. Press Enter.
Using Enter move over to NO and use the Up
Arrow to change it to YES then press Enter and
hours are reset.
8
11
9
10
12 13
Press both Up & Down Arrows
again if the wrong password is
entered.
NOTICE
Resetting Maintenance Alarms (Continued)

Operating Instructions
18
PressDownArrowandCHANGESEP.
(Separator) FILTER shows in the display.
Press Enter.
Using Enter move over to NO and use the Up
Arrow to change it to YES then hit Enter and it
resets the hours. Separator lter should be set
at 4000 hours.
PressDownArrowandCHANGEOILFILTER
showsinthedisplay,buttherstLineisC--=.
This is the screen for the oil life. Press Enter.
PressDownArrowandCHECK
COMPRESSOR shows in the display. Check
belt condition and belt tension. Give your
compressor a good overlook noting any
changes since last machine maintenance.
Press Enter.
Using Enter move over to NO and use the Up
Arrow to change it to YES then hit Enter and it
resets the hours
14 15
16
18
17
Resetting Maintenance Alarms (Continued)

EMAX Rotary Screw Compressors
19
Using Enter move over to NO and use the Up
Arrow to change it to YES then hit Enter and it
resets the hours.
Using Enter move over to NO and use the Up
Arrow to change it to YES then hit Enter and it
resets the hours.
AfterresettingtheBearingLubricanttimer,
you can return to the Main Screen by Pressing
the Down Arrow until you are back to the Main
Screen.
Press Down Arrow and BEARING LUBRICATE
shows in the display. Press Enter.
19
21 22
20
Resetting Maintenance Alarms (Continued)Resetting Maintenance Alarms (Continued)

Operating Instructions
20
Mechanical Components
Drive motor is 4 pole with low RPM (1750). This motor is also capable of variable speed drive as a standard feature. The
motoris12lead,Ydeltasoftstartingforlowampdraw.Overloadprotectionisinstalledforsafety.Normalelectriccurrent
canuctuateslightlyforvariousreasonsbutifthecurrentspikes,theoverloadprotectioncausesthemotor(s)tostop.If
thishappens,themotorsmustberesetmanually.
Ifmotoroverloadprotectioniscausedbyanyotherreason,contactEMAX immediately.
Drive Motor1
Reasons for tripped overload protection:
a) Operator error: Improper regulation of air
exhaust pressure or other parts of the system.
b) Branch circuit not sized correctly
c) Mechanical failures:
• Internalmotorfailure
 • Impropermotorphasing
 • Systemsettingerror
 • Blockedair/oilseparatorlter