Trane CGAH 115 Manual del propietario

ïi

JnRAflE* CGAH

AÍr

cooled

liquid

chilfers

Instaf

lation

Operation

Maintenance

used

withmanual

for

module

SMM

reference

L80lM 019E

Sizes ilS - lZO

- tiS - ZZS

230

-235

240

-250

GrolM oozE

The

aim

this

document

for

users

set

out

the

rules

for

theinstallation,

set-up,

operation

and

maintenance

this

type

ofTrane

liquid

chilter.

Themaíntenance

operations

required

to insure

that

this

machine

operates

reliably

throughout

its

full

service

life

are not exhaustively

described.

only the services

of a

qualífied

technician

employed

by a reputabte

service

company

caninsure

that

themachine

operates

durably

andreliably.

warranty

based

the

general

terms

and

conditíons

société

Trane.

Thewarranty

is void if the equipment

repaired

ormodified

without

the

written

approval

ofTrane,

theoperating

limits

are

exceeded

orif

the

controlsystem

the

electrical

wiring

modified.

Damage

due

to misuse,

lack

of maintenance

orfailure

comply with the manufacturer,s instructions or

recommendations

is not covered by the warranty

obligation.

,-.1

Allair-conditioning

units

are

shipped

theirinstallation

site

on awooden

skid.

Allmachines

reach

final

destination

completely

connected

andassembled

ready

forimmediate

start-up.

Please

check

thatthe

unithas

not

any

way

been

damaged

during

the

transport,

assoon

asit

arrives

site.lf

damage

isobserved,

oreven

onsuspicion

ofdamage.

ó Carry

out instructions

for notification

of damage

transport,

and

warn yourTrane

Agency.

About

thismanualz

"Caution' and 'Warnings" messages

appear at the

appropriate

place

throughout

themanual.

Your personal

safety

and

the proper

operation

of this

machine

require

that

youfollow

them

carefully.

Trane

Europe

assumes

no liability

for instalrations

servicing

performed

byunqualified

personnel.

Acceptance

ondelivery....,. .......................:.

...............2

Unitnameplafe

r " ...'........4

lnstallation

instructions.... ................4

Waterconnection

................... ..........,5

Wiring

diagram

-Customer

electric

power

supp1y.............. .......,.....,7

Unit

nameplate

The unit nameplate

gives

the complete

model reference

numbers.

The unit power rating is shown, and power supplies

should not deviate by more than 5% from the rated

power.

Compressormotoramperageis

shownin box

The currentintensity

(shown

in amps)is the maximum

for the rated

operatingvoltage.

The customer's electricalinstallation

must be able to

withstand

thiscurrent.

lnstallation ihstructions

Foundations

No specialfoundations are required,

provided

the

supporting

surface

ísflat

and

level,

and

can

withstand

the

weight

ofthe unit.

Waterdrainhole

Insure

thereis a drainhole

wide enough

to drain

away

waterfrom the unit in the event

of shut-down

or repair.

Clearance

tnsure

there is sufficient

clearance

around

the unit to

allow maintenance

operations

to take place

without

obstruction.

Forminimum clearance

consult

thecertified

submittals,

whichareavailable

on request

from yourTrane

agency.

Handling

A (mm)

B(mm)

Maximum

weight (kg)

1500

1800

725

Moo€LE

Moocr.uoosr-t

x"l-- f--l t

'ERIE-sEn,or.sERrEN

FT ctRcuÍT

cor{TRor.E

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ICOMPRESSORMOTOíI -Lr

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cIRcutT

I PRESSION

DESERVICE

EVPCOTEEAU -

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I EEIRIEESDRUCI(VERDAMPFER

WASSERSEMG

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. LOW.

NTEDER

SOCIETE

TRANE

88190

GOLBEY.

FRANCE

e rnArr

Water

to evaporator

connection

lnstall water circulation pump upstream of the

evaporator,

insuring

thatthe

evaporator

under

positive

pressure.

Tables

forpower

supply

connections

andwaterreturn

are

shownon thecertifiedsubmittals.

Thesedrawings

areavailable

on requestfrom

your

Trane

agency.

The 114coupling

located

on the outletconnections

may

be used as the draining outlet from the plate heat

exchanger.

The

following recommendations

refer

to Figure

1. Pressure

gauges:

showsenteringand leavingwater

pressure.

Stop valvesshould be provided

on water

inlets

and

outlets.

2. Vibrationdampers:

theseare suppliedas standard

with themachine,

andshould

placed

between

the

suppoftingfloor and the unit to prevent

vibrations

beingtransmitted

to thechilledwater

circuits.

3. Thermometers:indicate

chilledwater entering

and

leavingtemperatures.

4. Balancing

valve:

controlswaterflow

5. Stop valves: isolate

chillersand water circulating

pumpduringmaintenance

operations.

lnsure

that all chilled

water.

pipes

arefullyinsulated,

order

to prevent

frost

damage.lnsulate

heating

resistors

on allwater

pipes

exposedto negative

temperatures.

Minimum water capacity

Minimum volume of water in the chilledwater circuit

must be no less than 10% of the volume of water

circulating

per

hour

intheunit.

lf necessoN,

a buffer tank should be fitted.Safety

and

regulation

devices

will only operate

correctlyif there is

sufficient

water inthe system.

Figure2 - Water-to-evaporator

connection

Pressure

gauge

Balancing

valve

Watertreatment

Untreatedor insufficiently

treatedwater,

if usedin this

unit,may causescale,

slinreor algae

to accumulate

causeerosionandcorrosion.

Theservices

of a qualified

water treatment specialist are recommended to

determine

what treatment,if any, is advisable.

Trane

disclaims

any

liability

with

regard

todamagearising

from

theuse

of untreatedor improperly

treatedwater,

or from

theuseof salineor brackish

water.

Stopvalves

Expansion

compensators

Stopvalves

Evaporator

ff."

Generalunit characteristics

(11

Maximum load amps to be used for sizingoí cables,

fusesand disconnect

switch

(21

Starting amps with one coÍnpressorstarting ,theremaining compressor(s)

running at full load

Fuses

107 2sA

157 404

Eachcompressor

is supplied

with its

own fuses.

Size 115 120 125 zz5 230 235 240 250

Compressors 'l0T+107 10T+157 15T+157 (10T+10T)+157

(10T+15T1+157

(1!iT+l5T)+157 2X(10T+15T)2X(15T+15T)

Circuit 1t122222

Capacity control ïo 50 58ou

42 50 7sl30 70F'4 66t33 80t50/20 75FAn5

Maxload

amps

(1)

28bar

disch.

5barsuct. 380V A 42 53 64 74 85 96 106 128

4't5V A39 49 59 69 79 89 97 118

Nomínal load amps

25bar disch. 5 bar suct. 380V A38 48 58 67 77 87 96 116

415V A35 14 54 62 71 81 88 107

Startingamps (2) 380V A107 143 154 163 173 183 196 218

415V A1lil 158 168 176 185 195 207 227

Control cir. amos 230V A1.8 1.8 1.8 2.8 2.8 2.8 2.8 ?.8

Evaporatorwater volume Litres 3.76 1.7 5.66 7.52 8./to 9.12 9.42 11.32

Number of fan(s) 12222ou3 2ou3 2ou3 2ou3

Condenserair flow m3/s 4.25 4.96 6.61 1.46 8.4 9.5 11.8 11.8

Nominal fan sDeed revlmn 5.5 r0.9 10.9 10.9 16.3 16.3 21.9 21.7

Fan motor kW each kw 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.?

Fanmotor

staningamps

(3) 380V A14.1 14.1 I4.1 14.1 14.1 14.1 1

tl.1 14.'l

415V A15.4 15.4 15.4 15.4 15.4 15.4 15.4 15.4

Fanmotor full load amps (3) 380V A3.9 3.9 3.9 3.9 3.9 3.9 3.9 3.9

415V A3.6 3.6 3.6 3.6 3.6 3.6 3.6 3.6

Unit oil charge Seesubmittal

Weiqht 725 850 975 1250 1375 1425 15s0 1750

Coolins fluid charqe Seesubmittal

See

submittal

Seesubmittal

Lenght

width

Heiqht

NOTES:

Wiringdiagram

- customer

electric

powersupply

#ï" !:.:

------__-_-.t.!-

T-'- | I

i \\'i

q--.1-1.

...J

::::::

l-r

iffiÏ

'-li'1,{,{i

T--

E_-

Repère

@Options

Démarrage

pompe

EVP. Zubehoer

Anlauf.Wasserpum

VERD. Options

EVPV1/ater

pump

start

oInterrupteur

unité Hau

ptschalter

Maschine Disconnect

switch

oRésistance

coffret HeizungSchaltschrank Control

panel

heater

@Transfo.

alimentation

contróle Transformator TransÍormer

oSondedetempérature FuehlerTemperatur Temperature

sensor

CàblageTrane Trane-Verdrahtung WiringbyTraner

CàblageClient Verdrahtung

durchKunden Wiringby

Customer

Unitstart-up

Before

start

up,carryoutalloperations

onchecklist

and

follow the instructions

belowto ensure

thatthe unit is

correctlyinstalled

and ready

to operate.

The installer

must check

all the following

points

before

calling in the Traneservicing

Department

to put the

equipmentinto

service.

1. Chilledwater circuit ready to operate,

filled with

water,

pressure

test

carried

out,purged,

filter

cleaned

after2 hours

operation

ofthechilledwater

pump.

2. Thermometers and pressuregauges installed

chilledwater

circuit.

Chilledwatér

pumpinterconnected

tocontrol

panel.

Check

that all electrical

connections

are clean

and

sound. Check

that circuitscomply with the wiring

diagram

supplied.

Technical

datashown

thetopof

the wiring diagram should match the information

shownon the unitnameplate

plate.

Check

thatmains

power

supplyswitch

sound.

Check

compressor

oil level

at rest.

Thelevel

should

reach at least halfway up indicator located on

housing.

Seefig 4.forcorrect

level.

Check direction of rotation of compressors

using

phasemeter.

8. On start-upof each motor in the system,

check

the

direction of rotation and operation of all the

components

they

drive.

9. Checkextent

of pressure

drops

through

evaporator,

sothat

thevalue

matches

values

shown

ongraphs

andB.

10.

Checkthatthereis sufficient

demand

for cooling

thedayof start-up

{around

50%

ofnominal

load).

Differential

water pressure

switch:

lf the unit pressure

switch is adjustable,

please

refer

information

sheet

available

from your

Trane

agency,

and

adjustthe setpoint

as required.

Someunits

have

preset

pressure

switches

alreadyfitted,

andthese

should

notbe

changed.

Figure

4 - Compressor

oil level

Preparation

Before

stafting

up the system,

carry

out the following

checksand

operations:

1. Before

making

any

eleictrical

connection,

insure

that

theisolation

resistance

all

power

supply

terminals

ground

complies

with

standards

and

regulations

force.

Check

the isolation

c,f

all etectric

motors

using

500V DC

megohmeter

which

meets

manufacturer's

specifications.

2. Check

that all electrical

connections

are clean

and

sound.

Insure that circuits comply with the unit wiring

diagram.

The

technical

data

shownat

the top of the

wiring

diagram

should

match

theinformation

shown

onthe unitnameplate.

Switchon mainspow€rt,

supplyswitch.

Checkthat unit power supplies

match rated input

power.

5. Insure

all water and refrigerant

vatves

arein service

positions,

and

start

upwater

circulation

pumps.

6. Reset

all manually

setcontrol

devices.

7. Insure

sensor

isproperly

installed

inits

bulbwell

and

submerged

in heat

conducting

product.

Checkfixing

of capillarytubes (chr:ck

protectionfrom vibration

and from wear, ancl insure that they are not

damaged).

Start-up

1. Start-up

chilled

water

pump or pumps.

2. Start-upeach compressor

turning switchesS1, 52,

53, or S4 separately.

lf one of the compressors

will

notstartup,

check

the foltowing points:

a) SMM control modute should be in 'cooting.

position.

b) Connection

between

the unit and chiiled

water

pumpcontactor

nlust

bemade.

Max.

oil

level

Min.

oillevel

3. After unitstart-up,

leave

in operationfor at least

minutes,

to insure

pressure

stabilized.

Thencheck:

- compressor

and

powered

fanpower

consumption

- suction

pressure

- discharge

pressure

- theliquid

sightglass(es)

- superheat

- subcooling

- pressure

drops

andtemperatures

ofevaporator.

All measurements

andreadingsfrom pressure

gauges

mustberecorded.

according

to theprocedures

setout

below:

Liquidline

sightglass

The refrigerant

should be seen to flow through the

sightglass

in a regular

manner,

and befree

of bubbles.

Bubbles

area signthatthereis not enoughrefrigerant,

andof a possible

leakorobstruction

onthe

liquid

line.

Each

sightglassisfitted

with a moisture

indicator.

Asthe

refrigerant

flows through,

the sightglasswill showthe

degreeof rnoisture

therefrigerant.

Thisreading

also

temperature

dependent.The indicator

shouldshow dry

refrigerant.lf

"moist

refrigerant"

displayed,keep

unitin

operationfor atleast

twelvehours,and

check

again.

Superheat

Normal

superheat

7"-1OoK

onthe

standardunit.

Excess

power

supplied

to theevaporator

produces

high

suction

pressure,

and a low degree

of superheat

candrawthe

refrigerant

back

the

compressor.lnsufficient

superheat

corrected by adjusting the expansion valve reduction

lever.lf this produces

no result,

it shows

thateither

the

expansionvalve

bulbor shuttervalve

seatareno longer

operating

satisfactorily.

Thedefective

component

must

be replaced.

Sub-cooling

lf the system

iscorrectly

filled,

the sub-cooling

value

therefrigerant

valve

onthe liquidline

should

beB"-1OoK

on a standard

unit.

Condensorfan motors

All fans are secured directly to the motor shaft. The

operating

sequence

of fan motors is controlled

by the

SMMmodule.

Refer

to theIOM

oftheSil\4M

control

module.

Low temperatureoperations

(air

intake

to condenserl

lftheunitis

settooperate

alow

air

intake

temperature,

follow procedures

below to insure the chilled water

circuit

is properly

protectr:d.

Switchon power to evaporator

and water pipeheating

resistors.

lnsure that all pipes are perfectly protected

againstfreezing

Use

antif

reeze

solution

inchilled

water

circuit.lf forany

reason,

the heating

resistors

in the chilled

water

circuit

cannotbe suppliedwith current,

the solutionmust be

able

to withstand

anyice

formation

inthecircuit.

When

using the antifreeze solution, manufacturers,s

instructionsÍor filling o1'

the chilled

water circuit,

the

degree

of protection

andtestprocedures

must bestrictly

followed.

Final

check

Bringunit into operation

on a stage

by stage

basis,

meetchanging

levels

tlre

degree

ofcooling

required.

Oncethe unit is operating

as it should,

a final check

shouldbemade

forthefollowing

points:

1. Checkthatunit

clean,

and

clear

ofany

debris,

tools,

etc.

,Allvalves

in operating

position.

Closecontrol and starter panel doors, and check

panels

are

fixed.

800

.sl

()

(\l

.9t

.Ê

(\l

FigureA - Evaporator

pressure

dropswith

R134a Figure

B - Evaporatorpressure

dropswÍth

R22

€o

5{t

,.(,

Ê*

tr Il

lll 1,T,'/,

Á1r T-7r

R22 1t /,

,//, / /

]

System regulation

Regulationis

through

the

SMM control

module.

Refer

to the module

IOM

N" L80

lM 019

A sensoris placed

in the bulbwell

on evaporator

water

leaving

side,whereit registers

waterleaving

temperature

from evaporator.

Unit operations

Switch on fused mains power switch to chilled water

circulation

pump,

and

start-up

pump.

Unit will start up when S1 switchin control/command

boxswitches

to position

1(S2

switchto position

etc.).

The unit will operatecorrectly

when there is sufficient

waterflow atthe evaporator.

Thecompressor{s}

will start

up if the evaporator

water leaving

temperature

is above

theSMM control

module

setpoint.

The

SMMcontrol

module

willreact

based

ontheincrease

or decreasein the evaporator

wateroutlettemperature.

Weeklystart-up

1. Startupchilledwater

pump.

2. Switch

51to position

1,starting

upunit.

Weekendshutdown

lfthe unit needs

to beshutdown for ashorttime,switch

51to 0.

lf the unit is shut down for a longer

period,

seeunder

'Seasonal

shutdown', below.

Seasonalshutdown

{Requi

res

qualified

technician}

1. The evaporator

may be drainedby opening

the U4

connection

on the wateroutletpipe.

2. Switchoffmains

power

supply

switch.

Ensure

that

cannotbeswitched

on'while

theunitis

atrest.

Seasonalstart-up

(Requires

qualified

techniciian)

1. Ensureallthe instructions

in "Annual

maintenance.

instructionsmanual,

in the "maintenance'

chapter,

havebeencomplied

with.

2. Fillup andpurge

chilled

water

circuits.

3. Insureliquidline

stop-valve

isopen.

4. Check

for possible

leak:;

in system.

5. Switchon 51 switch

to 0

6. Switchon main powersupplies

to system.

7. Startup system.

8. Checkallinterconnecterj

devices

operate

properly.

9. Checkoil level

andservice

pressures

after

thesystem

hasbeeninoperation

for 15

to 20minutes,

under

full

load.

10.Checkrefrigerant

flow is regular.

lf bubblesappear,

checkfor possible

leaks;

in system.

11.Check

that high and low pressures

are corrêct,

requiredfor thetype of unit manufactured.

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