2.0 INSTRUMENT INSTALLATIONatlasmtt.net/data/usa/installation/Installation... · 2018. 2. 1. ·...

/ 2.0 Instrument Installation Doc. P/N 20600400 Rev. 3.0 12/14

Ci3000+F and Ci3000+/Ci4000/Ci5000 Weather-Ometer ®

2.0 INSTRUMENT INSTALLATION

space, compressed air, water supply/drainage,and environmental requirements. Alongwith this section, you may also refer to theDimension Sheet, drawing no. 40073626,

for electrical, plumbing and compressed airfacilities (see pocket of this binder).

2.1 Facility Requirements

Before uncrating your instrument, ensurethat facility air and water supplies meetthe requirements of this section. Install theinstrument in a clean environment conforming

Environmental Ratings & CompliancesTemperature Range: 16-29°C (60-85°F)

i NOTE

For High Irradiance (above nominal1-sun) and/or lower temperaturetests (chamber temp. below 42°C),the laboratory ambient temperatureshould be limited to 23°C maximum).

Humidity Range: 0-85% RH, non-condensingAltitude: Up to 2000 meters (6560 feet)Storage: 10-43°C (50-110°F), 20-80% RHPollution Degree: 2Installation Category: 2(Note: For compliance greater than Installation

limit AC input line transients to 2.5kV.)Laboratory Test Equipment Safety:EN 61010-1, UL 61010-1, CSA 61010-1

Machine Directive: EN 60204-1Safety of Machinery: ISO 12100-1,ISO 112100-2EMC Compliance: EN 61326CE CompliantThe room should be ventilated properly withminimal drafts, air pollution, or dust. Do notinstall the instrument in a corrosive or toxicenvironment, or adjacent to corrosion testingequipment. It is not advisable to install theinstrument in such locations as a warehouse,boiler room, garage/factory area, paint room,or where doors to the outside environment arefrequently opened causing changes in roomtemperature and humidity. Such locationsmay adversely affect instrument operation,longevity and test integrity (repeatability).

Waste Heat and Water Vapor Generation

The Weather-Ometer® generates waste heatand water vapor as normal by-products ofoperation. While the greater percentage ofthis is vented from the instrument throughits exhaust duct or through the lamp coolingsystem heat exchanger, the remainder mustbe taken into consideration when determiningthe heat load on the facility climate controlsystem. Refer to tables 2-1 – 2-3 for maximumestimates of heat and vapor generation.Heat Dissipation Into Ambient Air About 50% of the xenon lamp heat is exhausted

through the top duct into the ambient air surroundingthe instrument.

Waste heat from the chamber heater is also ex-hausted through the top exhaust duct of the instru-ment.

A great percentage of the above heat can becaptured by the laboratory exhaust system, but donot connect the laboratory exhaust system directly tothe instrument exhaust duct or malfunction and testinvalidation may result due to suction.

The heat from the control systems and powertransformers/reactors is radiated through the externalpanels of the frame.

Table 2-1 indicates the totals for all of the heatthat is exhausted or radiated into the air around theinstrument.

CAUTION! DAMAGE & INJURY

Instrument installation proceduresmust be performed only by an Atlas-

may result in serious personal injuryand instrument damage.

2.0 Instrument Installation / Page 7Doc. P/N 20600400 Rev. 3.0 12/14



2.1 Facility Requirements (cont.)

Heat Dissipation Into Water

The remaining 50% of the lamp heat is dissipated into the lamp cooling water.If tap water is used to cool the lamp its collected heat energy is discharged

into the building water drain. This energy then is not to be included in the calculations.If the lamp heat is dissipated by the use of the optional Atlas LiquiAir™ cooling system

(closed-loop, air cooled system), it will be apportioned as follows:If it is vented into the room, this heat content must be added to the exhausted heatfrom the chamber and the radiated heat. These values are shown in Table 2-1.If it is vented through a wall into another room or outside of the building, or througha facility exhausts system, its heat is not considered in determining the facilitycooling requirements.

Lamp+Heater+Control Heat Energy Energy (Blower)Model (Watts) (BTU/Hr) (MJ/Hr) (CFM) (KL/m)

Ci3000+ 2250+2000+2990 = 7240 24703 26.06 275 7.78Ci4000 3500+5000+2990 = 11490 39203 41.36 450 12.73Ci5000 7000+7000+3840 = 17840 60870 64.22 800 22.6

Table 2-1Maximum Waste Heat Values into Ambient Air

(Combined Exhausted and Radiated)

Electrical Power SI Unitsof From Lamp Heat EnergyEnergy Model (Watts) (BTU/Hr)(MJ/Hr)Ci3000+ 2250 7677 8.1Ci4000 3500 11942 12.6Ci5000 7000 23884 25.2

Table 2-2Maximum Waste Heat Values into CS-7 Lamp Cooling System

Refer to next page for moisture emissions.



Moisture Emission into Ambient Environment

Water vapor is exhausted from all Weather-Ometers during the course of running a test. It must be taken into account to prevent condensation and to prevent any condensed water from dripping from the facility exhaust duct back into the instrument exhaust duct. Insulate facility exhaust ducts above the instrument as required.

The amount of exhausted water vapor depends on the humidity set points of the test selected.

The humidity set point, the Chamber Temperature set point, and the length of time that

amount of emitted water vapor. Table 2-3 gives approximate values of water consumption and water emitted.



Consumption Low %RH Test High %RH Test (Blower)Model (

water consumption) water consumption)(L/min.) L/min L/min (CFM) (KL/m)

Ci3000+ 0.12 0.012 0.09 275 7.78Ci4000 0.20 0.020 0.15 450 12.73Ci5000 0.40 0.040 0.30 800 22.6

Table 2-3Water Consumed and Emitted into Ambient Air




Figure 2-1 Access Clearance Dimensions

Ci5000

Ci4000

Ci3000

Dimensions, Floor Space and Clearance

Refer to Table 2-4 and Figure 2-1 to determine

and service procedures.

Water Requirements

The Weather-Ometer® requires deionized (DI)

lamp cooling system and the lamp coolingsystem the specimen and rack sprays. (Spraysystems do not apply to the Ci3000+ Fade-Ometer.) Standard tap water is required forcooling the deionized water inside the lampcooling system reservoir. The CS-7 heat-exchanger which carries the tap water is partof a closed-loop system; therefore, tap waterdoes not come into contact with the DI wateror the test specimens.

Deionized (DI) Water

Pressure: 172–276 kPa (25–40 psi)

Purity: Less than 1 ppm of dissolved solidsand iron. Less than 0.1 ppm of silica.

Dim. Ci3000+ Ci4000 Ci5000Height 183 cm (72 in) 198 cm (78 in) 198 cm (78 in)Width 97 cm (38 in) 127 cm (50 in) 160 cm (63 in)Depth 84 cm (33 in) 102 cm (40 in) 130 cm (51 in)Weight 410 kg 585 kg 807 kg

(905 lbs) (1290 lbs) (1980 lbs)Floor 256 x 146 cm 256 x 178 cm 293 x 212 cmSpace (101 x 58 in) (104 x 70 in) (115 x 83 in)

Table 2-4 Dimensions and Weights

Ci3000+ Ci4000 Ci5000System L/m G/m L/m G/m L/m G/mHumidif. 0.12 0.032 0.2 0.05 0.4 0.10Spec. 0.07 0.018 0.2 0.05 0.2 0.05Spray*Rack 0.07 0.018 0.2 0.05 0.2 0.05Spray*

Table 2-5 DI Water Flow Rates (max.)

*Not applicable to Ci3000+ Fade-Ometer



Tap Water SupplyPressure: 138–345 kPa (20–50 psi)Temperature: 18.5 °C (65°F) max..

Atlas can supply a LiquiAir™ Heat Exchangerto allow instrument operation with minimal useof tap water. The LiquiAir™ is a fan-driven,air-cooled heat exchanger that transfers thexenon lamp heat to an exhaust duct or out ofdoors. Contact Atlas Sales.

Compressed Air Supply

Pressure: 483 kPa (70 psi)

Flow Rate: 0.11 m3/min (4 ft3/min) Max.3/min (8 ft3/min) Max.

Purity: Free of oil, water, and particulates

Lamp Ci3000+ Ci4000 Ci5000Watts L/m G/m L/m G/m L/m G/m2,000 1.1 0.294,000 1.5 0.396 1.5 0.3967,000 2.3 0.61 2.3 0.6112,000 4.9 1.29

Table 2-6 Tap Water Flow Rates


NOTECompressed air must pass throughan industrial grade oil/water separatorbefore entering the instrument.

i

The VibraSonic™ Humidification Systemuses an ultrasonic atomizer nozzle. Deionizedwater and compressed air are supplied to thenozzle to produce humidity. Compressed air

through an industrial grade water/oil separator(customer supplied) to ensure removal ofparticles that could clog the atomizer nozzleand compressor oil that can contaminate testspecimens and alter test results.

Electrical Supply

Line Voltage Note: All instrument operating-

For all instrument models, their transformervoltage taps may have to be adjusteddepending on where the facility voltage iswithin the allowable supply ranges. Refer tosection 2.3.3 for instructions. If the facilityvoltage is out of range or tolerances, contactAtlas Technical Services for guidance.

For operator safety and quickemergency shutdown, install a fusedsafety disconnect switch as closeas possible to the instrument and ineasy view of the operator. Refer to

electrical diagrams for switching-poleand fuse rating requirements.

WARNING!

NOTE ON DELTA CONNECTION

On instruments using a 3 Phase, 3Wire, corner-grounded delta connec-tion, refer to the electrical drawingsfor proper connections.

i

System earth-fault protection relieson the electrical grounding circuitof your facility. Ensure that yourgrounding circuit provides a low-resistance electrical path to ground.

WARNING!

NOTE

and rack/specimen spray (exceptCi3000+F) systems is consumed(drained from the instrument). DIwater used by the lamp coolingsystem recirculates in a closed-loop circuit, with consumption dueonly to lamp assembly removal andevaporation from the reservoir. Anautomatic, reservoir-refill systemmaintains the correct water level.

i



2.1 Facility Requirements (cont.) NOTE ON INSTRUMENT FUSES

The 3 fuses in the front-panel fuseholders are: 22mm X 58mm cylindrical,semi-conductor type. The customermust supply appropriate fuses forthe wall-mounted, safety-disconnectswitch (see Table 2-7).

i

Voltage Max. Freq. Wall Discon.

200-240 50 3 3 50/60 70A Slow-Blow

340-415 47 3 4 50/60 70A Slow-Blow

Min. Copper Wire Size: Use #4 AWG (21 mm²).

Ci4000

*External, safety disconnect switch (customer supplied)

Voltage Max. Freq. Fuse

440-480 60 3 3+PE 50/60 75A Slow-Blow

340-415 63 3 4+PE 50/60 75A Slow-Blow


Ci5000

Exhaust DuctingAtlas recommends that a customer-suppliedexhaust duct be positioned directly above,

rate must be minimized to remove instrument

rates.Voltage Max. Freq. Fuse

200-240 50 3 3 50/60 70A Slow-Blow

340-415 50 3 4 50/60 70A Slow-Blow

Min. Copper Wire Size: Use #4 AWG (21 mm²)

*Wall-mounted safety disconnect switch

Ci3000+

NOTE ON GROUNDING

The instrument frame must beconnected to a low-resistance earthground at all times (connect a 4AWGmin. ground lead to the PE ground

2-9 – 2-11). Do not use the NeutralAC line as the only ground as it isdisconnected on power shut off.

i

Voltage Max. Freq. Fuse

240 85 3 3+PE 50/60 100A Slow-Blow


Ci5000 Low Voltage



2.2 Uncrating the Weather-Ometer®

After the installation area has been prepared,uncrate the Weather-Ometer® and check forpossible damage caused during shipping. Ifthe instrument is delivered in subzero weather,allow it to sit on the skid in an enclosed areafor twenty-four hours and check for possibledamage.

Shipping Locks: Two angle brackets areinstalled to secure the lower front accessdoor(s). Remove the brackets with ascrewdriver.

Leveling: The Weather-Ometer® must beaccurately levelled for optimal operation. It issupported by leveling feet with adjustable boltsand locknuts. To begin leveling, place a bubblelevel across the upper, center ring of thespecimen rack inside the test chamber. Turnthe leveling bolts until thebubble is centered in thelevel. Turn the level 90°and adjust the bolts again.Repeat the procedure untilthe bubble is centered inboth directions. Tightenthe locknuts to secure thebolts in place.

Exhaust Ducts and Extensions: The airducts in the top of the instrument separateincoming (inlet) and outgoing (outlet) air andprevent exhaust moisture from dripping backinto the instrument. Identify the inlet andoutlet ducts and extensions as you uncratethe instrument. Each duct extension is

extensions into their matching ports on top ofthe instrument. Refer to Figure 2-3.

Figure 2-3: Exhaust Duct Space Requirements

Two duct extensions were removedfrom the Weather-Ometer® priorto shipping. Reinstall them beforeoperating the instrument or damagemay occur. Do not connect thefacility exhaust system directly tothe instrument exhaust duct! Use acollection hood or test conditionsmay be compromised.

CAUTION! INSTRUMENT DAMAGE

Ci4000/Ci5000

Ci3000

Figure 2-2Leveling Foot

Foot

Locknut



To conduct the facilities connection proceduresyou must remove one or more access panelsfrom the instrument. Follow the instructionsbelow to do so.

The Weather-Ometer® is equipped with threeupper panel turn-button locks that must berotated (unlocked) counterclockwise to allowaccess panel removal. An upper access panel

associated lower access panel.

1) Turn the red instrument power switch tothe off (O) position. Turn off power at the wall-mounted safety disconnect switch.

2) Unlock the appropriate upper panel by rotatingthe turn-button counter counterclockwise(using a straight-blade screwdriver). Theseare located near the top of each upper panel(items 1,2 and 3 in Figure 2-4).

These procedures should be

service technician. They involvecritical plumbing and electricalconnections that if performedincorrectly may result in instrumentdamage or personal injury.

WARNING!

NOTE

The upper access panel must beremoved first before removing itsadjacent lower access panel.

i

Figure 2-4 Access Panel Removal Diagram

Lock Locations

1 Left-side Upper Access Panel2 Rear Upper Access Panel3 Right-side Upper Access Panel

Overhead View

UNLOCK

1

2

3

Upper Access PanelTurn-button Lock

During installation procedures youmust remove side and rear panels asindicated in Figure 2-4.


2.3 Facilities Connections

2.3.1 Access Panel Removal

3) Remove the upper panel by lifting it upwardand then outward off its locating hooks. Reacharound and slip the ground wire off of its quickconnect terminal on the panel interior.

4) Remove the associated lower panel bylifting it up and off its securing hooks. Slant itsway from the instrument and disconnect theground wire.

5) After completion of procedures, reinstallthe access panel(s) and their ground wires,then secure the turn-button lock by rotating itfully clockwise.

Each access panel has a groundwire connecting it to the instrument.Pull the ground wire from its quick-connect terminal during removal.




2.3.2 Connection Procedures

Water Supply and Drain Connections

Connect water supply and drain lines to theconnection ports located at the lower rear of the

line (No. 1) is a gravity drain and the seconddrain (No. 2) is for water under pressure. Donot join these drain outlets in a Y-connectionor water backup into the chamber may resultif the pressure drain becomes obstructed.Route separate tubing from each drain portto the facility drain.

Do not connect compressed air at this time.

line. After making all port connections, turnon the tap and DI water supplies. Openthe instrument doors and access panels(see section 2.3.1) and check all waterlines for leaks. Ensure that your facility issupplying deionized water to the instrument at124-207 kPa (18-30 psi).

Figure 2-5 Ci3000+ Facilities Connection Ports

Figure 2-6 Ci4000/Ci5000 Facilities Connection Ports

Do not join the gravity and pressuredrain outlets prior to their connectionto a facility drain. They must remainseparate to prevent pressure drainbackup into the test chamber.


NOTE

The xenon lamp cooling water

water supply and power are appliedto the instrument. When the lampis started, the cooling system willactivate. Be sure to check the tapwater drain line for leaks at that time(when conducting 4.1 InstrumentStartup).

i 1 Chamber gravity drain, 19 mm (3/4 in) O.D.stainless steel tube

2 Compressed air inlet, 9.5 mm (3/8 in) O.D.stainless steel tube

3 Deionized (DI) water inlet, 9.5 mm (3/8 in)O.D. stainless steel tube

4 Pressure water drain, 9.5 mm (3/8 in) O.D.stainless steel tube

5 Tap water inlet, 9.5 mm (3/8 in) O.D. stainlesssteel tube

6 CS-7 gravity water drain, 13 mm (1/2 in) outerdiameter (O.D.) stainless steel tube

GRAVITYDRAIN FROM

CHAMBERCOMPRESSED

AIR INLET

DEIONIZEDWATERINLET

TAPWATERINLET

PRESSUREDRAIN

GRAVITYDRAIN(CS-7)

1 CS-7 gravity water drain, 13 mm (1/2 in) outerdiameter (O.D.) stainless steel tube

2 Pressure water drain, 9.5 mm (3/8 in) O.D.stainless steel tube

3 Tap water inlet, 9.5 mm (3/8 in) O.D. stainlesssteel tube

4 Deionized (DI) water inlet, 9.5 mm (3/8 in) O.D.stainless steel tube

5 Compressed air inlet, 9.5 mm (3/8 in) O.D.stainless steel tube

6 Chamber gravity drain, 19 mm (3/4 in) O.D.stainless steel tube



2.3.2 Connection Procedures (cont.)

Compressed Air Connection

Install an industrial grade oil/water separator inthe air supply line. Connect the air supply lineto inlet port at the lower rear of the instrument.Apply air pressure and check for leaks. Adjustthe humidifier air pressure regulator (Fig.2-7), located behind the front lower door, to448 kPa (65 psi) . If present, l i f t upthe lock ring before you adjust the airpressure regulator knob. Press the lockring down to secure the knob position.

Electrical Power Connection

The Weather-Ometer® is equippedwith a small air regulator that includesa secondary oil/water trap. DO NOTdepend only on this trap duringnormal operation of the instrument;

device only. Install an industrial gradeoil/water separator on the supply line.


Connect power lines through afused safety disconnect switch (Fig.2-8) with appropriate fuses (seesection 2.1 Electrical Supply). Locatethe disconnect switch as close aspossible to the instrument and in easyview of the instrument operator.

WARNING!

1 Pressure adjust knob 2 Knob locking ring (or lift knob)

Figure 2-7 Air Pressure Regulator

1

2

Figure 2-8 Fused Safety Disconnect Switch

Wiring Entrance: Feed the AC supply wiringthrough the wiring entrance/conduit plateatop the instrument. If conduit is to be used,connect it to this plate as required.

On the Ci3000, remove the left-side upperaccess panel to gain access to the AC line

made (Fig. 2-9).

HIGH VOLTAGE! SHOCK HAZARD

The 200-480V AC electrical supply iscapable of causing electrical shockand fatal injury. Before connectingsupply wiring to the instrument,ensure that power is switched off atthe wall-mounted disconnect switch.NEVER handle or connect elec-trically-live wiring or serious injurymay result.

Ground wiring connected to theinstrument PE frame-ground terminalmust be the same gauge as theAC supply wires to ensure propergrounding protection.

WARNING!

Figure 2-9 Ci3000 Electrical Connections

1

1 Power Filter Input terminals (AC input)

Power LineConnectionto AC FilterPower

Filter



On the Ci4000, remove the left-side upperaccess panel to gain access to the AC line

made (Fig. 2-10).

On the Ci5000, open the small, front, upperleft, screw-mounted access panel (Figure2-11).

Connect electrical power as indicated in theapplicable wiring diagram included in theschematics package. Connect input power

Transformers Taps: If the Atlas instrument

supply voltage, refer to section 2.3.3 to adjustthe transformer taps to match AC supply linevoltage and frequency.

2.3.2 Connection Procedures (cont.)

The power transformers and reactors are

ranges. In some cases the instrument maybe installed in a facility with differing powercharacteristics, such as AC voltage outsidenominal tolerances. In such cases, measurethe line voltage at various times during atypical work day (to determine worst-casevalues) and then adjust the transformerstaps to accommodate the power conditionsobserved. Refer to Figures 2-13 and 2-14 forthe transformer drawings applicable to the

HIGH VOLTAGE!High voltage is present at the terminalsof the transformers and reactors.Shut off power to the instrumentat the safety disconnect switchbefore making adjustments to thetransformer tap connections orelectric shock and injury may result.

Electrical Power Connection (cont.)


1 Power Filter Input terminals (AC input)2 Screw-mount access panel

1

2

These procedures should be

service technician. They involvecritical electrical connections that ifperformed incorrectly may result ininstrument damage or personal injury.

WARNING!


Power LineConnection

1

1 Power Filter Input terminals (AC input)



Ci3000+ / Ci4000 Transformer/Reactor Taps

Turn off all power for the procedures below!

(Do not performif accurate electrical utility informationwas provided to Atlas prior to purchasingthe instrument.) Determine utility powercharacter-istics by measuring the incoming

on the transformers accordingly. If there are

all transformer tap connections against theelectrical schematics.

Adjust the BoosterTransformer lead among terminals 6 through9 to obtain a lamp-circuit voltage as close aspossible to the target voltage. If the lamp willnot ignite, adjust the tap to achieve a higherlamp circuit voltage without exceeding themaximum indicated below.

Model Target V.* Max. V.* Ci3000+: 245V a.c. 250V a.c. Ci4000: 265V a.c. 280V a.c. *As measured across the xenon lamp and the main reactor.

Low Irradiance Tests: For tests with very lowirradiance levels, and thus low lamp wattagelevels, it may be necessary to adjust the MainReactor tap to a lower setting.

When changing the terminal positionof a tap, be sure to move all leads asa group from one terminal to another.

i NOTE

(cont.)

Figure 2-12 Ci3000+/Ci4000 Transformers/Reactors

unit. Dashed arrows indicate optionaltap connections. Only Reactor L2 has

i NOTE

L1 - Main Reactor

L2 - Auxiliary Reactor

T1 - Booster Transformer

Lamp Volt-age Boost

Select

2.5kW3.5kW6.5kW

LineFrequency

50 Hz60 Hz

Input Line Volt-age Select

200 V230 V

250 V

Lamp VoltageBoost Select

25 V37.5 V

50 V70 V

COM

*This COM wiremay be moved toterminal 6 whichwill provide 12.5Vboost at terminal7, 18.8V at term-inal 8, etc.



(cont.)

Ci5000 Transformer/Reactor Taps

Turn off all power for the procedures below!

(Do not performif accurate electrical utility informationwas provided to Atlas prior to purchasingthe instrument.) Determine utility powercharacter-istics by measuring the incoming

on the transformers accordingly. If there are

all transformer tap connections against theelectrical drawings.

Lamp Ignition Difficulty: Adjust the T1Booster Transformer tap among terminals2 through 8 to obtain a lamp-circuit voltageas close as possible to the target voltageindicated below. If the xenon lamp will notignite, adjust the tap to achieve a higherlamp circuit voltage without exceeding themaximum.

Model Target V.* Max. V.* Ci5000: 500V a.c. 520V a.c. *As measured across the xenon lamp and the main reactor.

Low Irradiance Tests: For tests with very lowirradiance levels, and thus low lamp wattagelevels, it may be necessary to adjust the MainReactor tap to a lower setting.

When changing the terminal positionof a tap, be sure to move all leads asa group from one terminal to another.

i NOTE

Figure 2-13 Ci5000 Transformers/Reactors

Dashed arrows indicate optional tap

selections are a consideration onlyon reactors L1 and L2.

i NOTE

L2 - Auxiliary Reactor

T1 - Booster Transformer

T2 - Control Transformer

Used on3 Phase3-Wire

Systems(440-480V)

only

L1 - Main Reactor

5060



Ci5000 Transformer/Reactor Taps (cont.)

Figure 2-13 Ci5000 Transformers/Reactors (cont.)

T3 - Heater Transformer(Ci5000)

COM (1)180 (2)200 (3)230 (4)240 (5)260 (6)360 (7)380 (8)400 (9)420 (10)440 (11)460 (12)480 (13)

T3 - Heater Transformer(Low Voltage Ci5000)

T11 - Booster Transformer(Low Voltage Units)

This extra booster transformer, which suppliedpower to Boosetr Transformer T1 in LowVoltage (240V) Ci5000 instruments, providesan initial step-up in voltage (240V > 360V). T1then boosts the output to the 520V requiredby the xenon lamp circuit.

T11 - Booster Transformer(Low Voltage Ci5000 only)

T3-Heater Transformer (Low Voltage Units)

The Low Voltage (240V) Ci5000 also includesa heater transformer to raise the line voltageto 480V, as required by the air heater.

T3 - Heater Transformer

Ci5000 units include a heater transformer toraise the line voltage to 480V as required bythe air heater.

(cont.)

2.0 INSTRUMENT INSTALLATIONatlasmtt.net/data/usa/installation/Installation... · 2018. 2. 1. ·...

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