McQuay NC-U Installation Manual

McQuaY”

Operation and

Maintenance Data

Bulletin No. OM 112

March, 1993

FormNo. 573440Y

Absorption Chiller

NC-U Model

/

NOTESTO USERS

1 . Before operating this chiller, YOUd-mid first thoroughly read this

manual.
You may not understand all of the explanations for operation when
you firstly read this booklet, however, P1ease strictly follow the
directions as shown hereinafter.

2.Besure not toleak theair into thechiller atany cases.
(Take care when YOUhandle the manual purge values and service

valves. )

3 . Do not turn off the main supply power to the chiller.

If turn off the breaker, purge unit of the chiller does not work.

4 . Operate chilled water ‘ pump(s) and air handling unit(s) during

dilution cycle operation of the chiller.
Chiller has a few cooling capcity during diluted cycle operation.

5. Specifications and eqipment may be changed as required by the
manufacture without any notice and obligation to the users.

814-6-0502-452-01

OfIRATIYM4UK

CONTENTS

SKTION 1

i:;

1.3

1.4

SKI’ION 2

2.1
;::

2.4

2.5

Slxm 3

3.1
::;
::;

3.6

Page No.

NmEs’m

~ ~~~ ................................... ~

m HUtCm OF AKORPI’IoN “----------------------------------------2
COOL14MR4TlhGCYUE DHRIPHON ------------------------------20
MU.HVHE4’IIR lLUSIRATRIN -----------------------------------------25

= ~~ .................. .

CMRATION---------------------------------------------------------------------39
&iRATION80ARD ------------------------------------------------------------40

TEMHRATURESE1-TINe---"-"------------------------------------------------43
!3U-DIAGNG!XICSFUNCHON --------------------------------------------51
FRMRATIONFUUSTARTUP-----------------------------------------------54

OPIRATION---------------------------------------------------------------------58

~~ -----------------------------------------------------------------72
DALY m~ ---"----"--"--------------"------------------------------73

=~WT~ _ on -----------------------------------------80
WATIR‘lRE4TbHfI’-----------------------------------------------------------82

MAMH’UNCEm ~----------------------------------------------- 86
PARTSINWIETION------------------------------------------------------------89

m----------------------------------------------------------------

------................. .------- ------.-- ..-,.------.---- .........”.-., -.

“--“--”-------------------------------”-37

lMTNAMx-"-----------"--"------------"------"---"--"--------"75

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i

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SiCHON 4

4.1

4.2
:::

4.5

~ -M ................................................ 9 ~

INDICATIONLAMP---------------------------------------------------92

Fmm

FAILURE---------------------------------------------------------------94

IN ‘IHECIXHJhKOHRATION-------------------------------------95
JN ‘lHE HE4TIIWCHRATION------------------------------------98

TIME ~-----------------------------------------------------------lOl

WTKNI ENwlESUWTKN

mm 1 G13WRALDB3UPTION ---"----"---""-"---------"----"""-----"---"----""`----"-1

1.1 ‘lHE FRINCIPLEw ABSORITloN“-””-----”---”-”----:”---------”:-----”----2

WHYDOIB A HEATING(l-HI-L?---------------------------------------2

(1)

‘IHEFRINcm OF ABSCRFTIoN"-"-----"""---------"------"-----"----- 4

(2)

smJI ETEcr TYPE (BASIC CYuE) “----”””---””----””-----””--- 7

(3)

w - ~ .................................................... 8

(4)

CUOLINGWA~--------------------------------------------------------------9

(5)

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(6)

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(7)

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(8)

CONTENTS

Page No.

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1.2 (x)oLINGCYuE DEStxlFrIoN -----------`"----"------"----"----"-"----------"lo

(~) ~~ - ..............................................................l9

1.3 ~11.UR IUKIRATION --------------------------------------------------------23

(1) lUUSIRATION

(2) ~A~ OF TYPIC4LU-IILLH?(m V~) ..........-....-.......24

(3) DETAROF TYPIC4LC1-HLUR(m VIEW)-----------------------25

(4) ~A~ ~ ~w ~~(R~ V~) ...........-...........26

(5) DETAITCF mm ~~(~ Vm) .......................27

(6) TYPBXL(DNIROLP~-------------------------------------------------28

(7) TYPEALm CONIROLVALVEANDm ~--.. ..... 30

(8) = ........................................................................3l

~.4 cJJqq’y ~~ .................................................................34

QIILI.EI WATIRANDU30UK WAIH------------------------------34

(1)

HIGHlXMPfRAllJREG134ERATOR---------------------------------------34

(2)

m-------" ""----"""--------"----"----------"-------""---------"-----"-"----""35

(3)

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(4)

-----------------------------23

—l–

1THE PRINCIPLEOFABSORPTION

(1)WHY

DOES A I-EATING CHILL ?

The cooling means keeping the room temperature lower than outside temperature. As
shown Fig.l-l, operate tocarry theheat from the room with alowert temperature (28C,

82 F) to the open air with a higher temperature isrequired.
heat can not move from low temperature side toahigh temperature side. So, to
transmit the heat as opposed to this law (principle), some way (apmratus) is
necessary.
temperature one asifawater pump isused todraw up the water from a deep well.

That is, aheat pump (chiller) isused topump out the heat from alow

But, in the nature, the

RE

COOLING LOAO

(82 “F) (90 ‘F]

AIR CONDITIONER

FIG. 1-1

HEAT FLOW

+

HEAT FLoW

–2–

The typical chiller using an electric asa operation power source asaconveyerto
curry the heat inFig.1-2 is anelectric turbo chiller and the typical chiller using a

heat energy isanabsorption chiller.

chilled water is made by using the latent heat released by a liquid as it evaporates
We can find this principle through our experience in a daily life.
having an injection, after applying asalchol fordisinfection onthearm,wefeel
thepartofarm cool.
heat from thearm when itevaporates.
wesweat inahot day orbytaking exerxise.
automatically controlled by theevaporation ofsweat which takes theheat from the

body.

necessary toreturn to liquid for using vaporized liquid.
compressor isused in an electric turbo chiller and anabsorbent isused inan
absorption chiller.

The absorbent decreases the absorption power when itbecomes diluted solution by
absorbing thevaporized solution.
concentrating process ofthe absorbent isrequired.
natural gas, steam or hot water.

A chiller also uses anlatent heat ofevaporation.

Because, the alchol is heated by body’s temperature, took the

And another example is that we feelcool when

bercause, thebody temperature is

But in a chiller, it is

Toreceover theabsorption power, the heating and

Asheat source, itisused by

For example, when

For this purpose, the

INDOOR

A GRAIN OF HEAT=

FIG. 1-2

k!*%

-1=.

u

HEAT FLOW AT ~ING

HIGHER TEWERATU?E

smE

–3–

(2) J-w PRINCIPLE OF ABSORPTION

Install heat transfer tubes in a closed vessel and put a dry silicagel (Silicagel is

high quality absorbent material) in it as shown Fig.1 -3.

t

vesselto make avacuum with the pressure

of approx. 6.5mmHg (1/4 inchHg). Drops of
water are allowed to fall on the heat transfer tubes (Evaporator).
vacuum vessel evaporates at 5C (41F).

The water take anevaporation heat from the

water intheheat trasnfer tubes, when itbecome vapor.

Take out anairinthe

The water in the

(Such liquid is called a

refrigerant and shown as a refrigerant liquid or a refrigerant vapor for the
following.)
silicagel, a vacuum is kept inside the vessel.

As this evaporated refrigerant vapor is absorbed immediately by a

(Ontheother hand, thewater inthe
heat transfer tubes becomes chilled becasese the heat eqiovalent to the evaporation
heat is taken.

immpossibleto keep a vacuum

But, when the silicagel reaches the limit of absorption, it is

in the vessel and chilled water can not be obtained.

WATER

(REFRIGERANT)

CHILLED

WATER

MATER

e

*

6EA7

TRANSFER
TUBE

FIG. 1-3

+Y

SILICAGEL

—4–”

Therefore replacing a silicagel as an absorbent in the vessel with new one at all
times permits to get chilled water continuously.

For this purpose, instead of the

solid absorbent such as a silicagel, a liquid absorbent suchaseasy-to-handle lithium
bromide (LiBr) solution, etc. is used

(Such liquid is called an absorbent.) This

case is shown Fig.1-4.

CHILLED
WATER

WATER

CONCENTRATE
SOLUTION

L

EAT
TRANSFER
TUBE

REFRIGERANT

/

7

[

PUHP

bILUTED

VAPOR

S(MJTION

FIG. 1-4

–5–

drops of LiBr solution areallowed tofall (Absorber) inside thevessel. The LiBr
solution absorbs refrigerant vapor.

But,when theabsorbent once absorbes the

refrigerant vapor, it is diluted and dereases ability to absorb. Resulting in the
chilled water can not be obtained.

I

in continuously. At this stage, thediluted solution is hinted by driving heat

This means that concentrated solution must befed

source (natural gas, steam or hot water:Generator). The heat causes the solution to
release the absorbed refrigerant and also

reconcentrates thesolution.

The refrigerant vapor which is released from the solution when heated,

separate vessel (Condenser) liquid refrigerant. Drops of
again introduced into the vacuum vessel andrecycled

This is shown

is cooled in a

this. water are.

Fig.1-5. ‘

FIG. 1-5

–6–

(3) SINGLE EFFECT TYPE (BASIC CYCLE)

Asshown Fig.1-6,
absorption chiller.

this is the basic operational cycle

Part (l)shows agenerator,

shows anevaporator

Cooling water flows

condensor cools the
cooling water intheabsorber absorbs the heat when the
bythe absorbent.

The generator (1)heats the diluted solution bydriving
solution releases the refrigerant vapor and becomes the

transfers tubes ofevaporator (3). Drops

The water through the heat transfer tubes

ofvaporized refrigerant.

of the single effect type

sbows acondenser, part (3)

The cooling water in the

back into refrigerant. The

regrigerant vapor is absorbed

heat source.

The diluted

concentrated solution.

COOLING

WATER

CHILLEO
WATER

WATER

----- .-

DRIVING
HEAT
SOUCE

FIG. 1-6

–7–

(4) DOUBLE EFFECT TYPE

In case of the single effect type absorption chiiller mentioned above, all condensation
heat whn the refrigerant vapors coming from generator iscooled and condensed atthe
condensor, is released in the cooling water.

The double effect type absorption chiller is used
The generator section is divided into a high

-- generator.

generator is used to heat the LiBr solution in the
the pressure (hence the boiling point) is lower.

As mentioned in the single effect type, the refrigerant vapor produced by the low
temperature generator issent tothecondensor

other hand, therefrigerant vapor produced bythehigh temperature generator turns to
water as it released heat to the intermediate LiBr solution.
heat transfer tubes in the low temperature generator.

byboth low and high temperature generators turns to liquid refrigerant and mixes in
thecondenser before returning totheevaporator.

In this step, the diluted solution is heated by driving heat source and by the latent
heat in the refrigerat vapor which otherwise would be released into the cooling

water.
Moreover, less heat being discarded into the cooling water translates into a snail
cooling tower.

This combination means a lower energy consumption of driving heat source.

As shown Fig.1-7.

The refrigerant vapor

the condensation heat effectively.

temperature generator and alow

produced by thehigh temperature

low temperature generator in which

to become liquid refrigerant. On the

This occurs inside the

The refiigerant vapor produced

.

I

FIG. 1-7

–8–

(5) COOLING WATER

lo

The lower temperature of cooling water

a)

The absorption power ofLiBr solution isstrong atthe lower temperature ofthe
cooling water.
condensed temperature ofregrigerant downs.

low.

As the boiling temperature (generator temperature) oftheLiBr solution downs

when thecondensed pressure islow,

When thetemperature ofcooling water in thecondenser is

Therefore condensed pressure becomes

calolific value of driving heat source can

decrease. This means save energy.

It is not acceptable

b)

As shown Fig.1-8, a
LiBr solution of

temperature For

that the temperature of cooling water is too low.

few LiBr dissolves with water at low temperature.

That is, the
high concentration becomes crystallization under the lower
example, it is crystallized with concentration of 65% at the

temperature lower then 42C (108F), with concentration of 60% at the temperature
lower than 17C (63F).

Chiller has some problems when cooling water temperature becomes too high

c)

When thetemperature of thecooling water becomes tohigh, theabsorption power of the
LiBr solution decreases.

temperature and wastes much fuel.

The chiller can not get the normal chiller water

Therefore, to prevent this, the maintenance for

cooling water SYStem (epuipment and control) and water treatment are required.

d)

Water treatment of cooing water

The water treatment of the cooling water is an inportant factor for the chiller. If
thewater quality isno good, scale adheres totheinside ofthe heat transfer tubes,

resulting in the

decreases transfer heat effect and waste fuel. Astheheat transfer

tubes may become corroded, itisrequired to fully take care ofthe water treatment.

–9–

\

(6) VACUUM

Onthe earth, wearepressed bythe air.
pressure (1kg/cm, 14.2psi).

the vacuum.

When explaining the vacuum for the absorption chiller, it is required to

This pressure is called atmospheric

The pressure less than atmospheric pressure

is called

know the relation between the pressure and the evaporation pressure o the water.

lt is experienced in a daily life that the water is boiled (evaporated) at 100C
(212F) in the atmospheric pressure.

When the pressure

pressure (vacuum), the water boiled below 100C (21OF).

between the pressure and the evaporation temperature.

.

is lower than the atmosheric

Table 1-1 shows the relation

The water isevaporated atlower temperature, when thepressure is lower and lower.
Therefore, the inside the chiller should be always kept in high vacuum.

Since the

refrigerant is evaporated at 5C (41F) to get the chilled water of 7C (45F) by an
absorption chiller, it is required to keep a high-vacuum condition with pressure

of

6.54mmHg (1/4 inchHg) in the evaporator.

Table 1-1

Gauge Absolute
pressure

W“2G

m=me
*

(psig)

Atmospheric

pressure

t 0.5 ( 7.2)

1 ata.

{o (o) 760(29.9)

4

vacullB

(inch&)

10 (142)

8 (114)

Driving pressure for double effect type

5 ( 71)
1 (14.2) Driving pressure for single effect type

Atmospheric pressure

525.9 (20-3/4)

61.0 ( 2-3/8)

Pressure in the cmdenser

9.2 ( 3/8)

6.54( 1/4)

Pressure in the evajxmtor

–lo–

(7) LITHIUM BROMIDE (LiBf : ABSORBENT)

Lithium bromide (LiBr) isamedicine made from lithium obtained fromlithium ore and
bromide obtained from theseawater.
with sodium chloride (NaCl).

Because lithium (Li) and sodium (Na) are alkali while

bromide (Br) and chloride (Cl) are halgen.

The lithium bromide has the same characteristic

The sodium chloride (NaCl) is salt. It

is well known that when salt is left in a high-humidity atmosphere, it becomes sticky.

This means itabsorbs moisture intheatmosphere.

The lithium bromide has the same

characteristics and its absorption power is stronger than that ofsalt.

its concentration and the lower its temperature of liquid. thestronger the absorption

power.

The higher

Fig.1-8 shows the lithium bromide
Fig.1-9 shows the lithium bromide
Fig.1-10 shows the lithium bromide
the condition of the cooling cycle

equilibrium diagram.
concentration diagram.

during diagram.

This chart is convenient to show “

of lithium bromide solution.

Fig.1-l1 shows the lithium bromide enthalpy diagram.

Lithium bromide has corrosive action to a metal under existing oxygen

But, asthe

absorption chiller is a vacuum vessel, almost no oxygen is in a vessel. However, to
make more complete, corrision inhibitor is added in the absorbent and further
alkalinity is adjusted.

So, attention should be taken to handle the absorbent and it

is neccessary to keep the amount of inhibitor bY performing thechemical analysis for

theabsorbent.

Chemical formula : LiBr
molecular weight : 86.856

Component

: Li= 7.99%

Br=92.OI%
specific gravity : 3.464 at25C (77°F)
Meltingr

point :

549C. (1 ,020 .2F)

Boiling point : 1.265C (2,309F)

–1 l–

21
20

12!

100

80

L:

60

10(

-25

-40

-50

-75

40

LX5R-21+2

20

.

.

0

.

.

c

-40

-60

I

-1oo

-80
0

10

20

30

CONCENTRATI~ (%)

EOILIBRIUM DIAGRAM

40

50

60

70

I

TEk!.!ERATURE

32 50 75

I

1.9C

1.85

1.8C

1.75

1.70

1.65

I

10 20 30 40 50 60 70 80 90

100

I

I

125

I

150

I

175 200

i

I

—

—.-.

t

100[”(!

63

62

61

60

59

67

.

x

.

1.60

1.55

1.50’

1.45

1.40

o

1

32 50

J

I

---r--t-”

I

—

I

I

3=1

10 20 30 40 w 60 70 80 go

I

75

1

I I

100

TEMPERATURE

125

I

150

I

175

100[’C)

I

J

200 212[”F)

58
57

56
55
54

52
51
50

49

48

FIG.

1-9 CONCENTRATI~

–1”3–

760
700

600

400

300

200

160

100

80

u

60
40

30

20

10

8

5

o

I

3240 60 80 100 120 140

10 20 30 40 60 60 70 80 90

I 1, 1 1

I

I

FIG. t-10 DUHRING DIAGRAM

I

160

TEMPERATURE

180 200

1

100

I

220

110

I

120

I

240

260

.130

1.

140
I 1.

280 300 320

I 50

160

170(” C:

I

I

338(” F

I

150

\

140

130

120

110

- 160

.

100

60

50

40

90

80

70

40

-l

45

~ 130

%!

—

I I

I I ---

(

—

120

70
60
50
40
30
20
10
0

50

55

60

65

70

CONCENTRATION (%)

FIG.1-11 ENTMU_PY DIAGRAM

–15–

(8) COOLING CYCLE

An example for the actual driving cycle of double effect
Duhring diagram.

a) A-B shows theabsorption process in theabsorber.

tration of 63.62 at point A absorbs the refrigerant vapor
cooled until 36.3C (97.3F) by cooing water, then becomes diluted solution with

concentration of 58.1% at point B.

The pressure of this point is 6.3mnHg(torr) which is equal to the saturation vapor
pressure of water at 4.3C (39.7F) (cross point on the saturation liquid line), so,
the chilled water at 7C (44.6F) can be produced in the evaporator.

Therefore, the higher the temperature of thecooling water, thehigher the absorber

internal pressure
evaporation
obtained.

b) B- C-

the diluted

temperature ofrefrigerant becomes high and chilled water can not be

D' shows the temperature rise process under the fixed concentration when

solution pass through the low and high temperature heat exchangers.

(equal to the evaporator internal pressure .

type is explained using the

The absorbent with concen-

from the evaporator asitis

)

As a result, the

generator
the refrigerant vapor and is concentrated.
solution of 61.1% at point E and finishes the first stage of concentrating.

The pressure atpoint Ebecomes approx. 707.1mmHg(torr).
the pressure of 55.7mmHg(torr) in the condenser
temperature ofcooling water. That is,thepressure
generator has to be performed at the temperature higher than 91.1C (196F) of the

concentrated solution obtained from the cross point with the concentrated solution

of 63.6%.

pressure of the high temperature generator becomes 707.mmHg (torr).

I

The diluted solution at point D’ is healed until point D.

Then it becomes the intermediate

(This pressure depends on

determining it according to the

inside the low temperature

Whensetting to 97.9C (208.2F) bymaking this as^ 6.8C (12.2F), the

It releases

—16-

F-F-G shows theconcentrating process in thelow

temper

e)

absorbent with 61.1% atpoint F'isheated bythe refrigerant vapor from the

temperature generator.

concentration rises, and it becomes theconcentrated solution of63.6%. Thus, the
second stage oftheconcentration isfinished.

The pressure atpoint Gisdetermined bythe temperature ofthe cooing water. With
thecondensation temperature of40.2C (104.4F) thepressure
pressure ofthis temperature, 55.7mmHg (torr).

G-A’shows theprocess ofthe heat exchanger with the diluted solution while the

f)

concentrated solution goes out from low temperature generator and passes through the

As a result, the refrigerant vapor isgenerated, the

isthesaturated vapor

g)

Asdescribed above, itcanbeunderstood that the cycle of the absorption cooling

system depends onthe

taking out temperature

temperature condition (partially determination element from the

of the chilled water).

theabsorber and iscooled bythe

starts toabsorb therefrigerant

–17–

d

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–18–

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—19—

a) Evaporator

The refrigerant isdispersed onthe heat transfer tubes ofevaporator.

Chilled water

through the heat transfer tubes of evaporator is cooled by the latent heat of

J

vaporized

b) Absorber

refrigerant.

FIG. I-14

—2 o—

c) Heat exchanger

The diluted solution from the absor$er passes through the low temperature heat
exchangerss, where it is heated by concentrated solution.

The diluted solution after

leaving the low temperature heat exchanger passes through thehigh temperature heat

exchanger, where it is heated by intermdiate solution.

The diluted solution after

leaving the high temperature heat exchanger flows to the high temperature generator.

d ) High temperature generator

FIG. I-15

The diluted solution from the heat exchangers is heated in the high temperature
generator. It releases the refrigerant vapor

and is concentrated.

It becomes

intermediate solution.

FIG. 1-16

—21—

e) Low temperature generator

The refrigerant vapor from thehigh temperature generator passes through theheat
transfer tubes oflowtemperature generator.

The intermediate solution in the low

temperature generator is heated by the refrigerant vapor.
refrigerant vapor and is concentrated.

It becomes concentrated solution. The
condensed refrigerant intheheat transfer tube oflow temperature generator flows to
the condenser.

f)

Condenser

It releases the

The refrigerant vapor from thelowtemperature
transfer tubes of condenser.

Cooling water

condensation heat.

generator iscondensed ofthe heat

from the absorber is heated by

FIG. 1-17

—22–

103MIERlMRATl$i

(l) UlJSTRATI14

w

CY

9’ 2.1

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w

m

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0

n
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l-!

t

w

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—23–

( 2 )DETAIL OF TYPICAL

(Fret view :

Steam

1-

CHILLER

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–24–

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SV9

// \\

HEAT EXCHANGER

\

ISOLATION VALVE

FOR 81 ABS PUMP

II

\

‘ISOLATION ‘VALVE

FOR REF PUMP

\ ~,~~ ~,”~

IL

//

I Phil

\

\ \

\’

“kSV6 \

STEAM TRAP

1“

FIG. I-21 RIGHT VIEW

.+

;U

mn

U.in

>X

-10

<n
>

Zm

0<

I-*

us

J

Oiz

ma

x

m

Wn

>Z

-la

<n
>

m

zm

oa

l-+

4#

-J

Otx
O-Jo

IL

cum
>>

(’U+

>>+
mm>

kii$kwmm+dll

/

\
\

1

7-

/

/

/

\

3

w

m
>

‘L--

-1
Ill

z

/
/

, , ,

/

>

Cr

u

1­IL

w

A

l-u

ru

1

*

cl

IL

‘r

u

—2 7–

(6) TYPCI CCNllW_ PKL

IndiCatiOn LAMP

OPERATION BOARD

EMERGENCY
STOP SWITCH

/’

,,

II

FIT. I-23 CONTROL PANEL

CONTROL PANEL

HIGH VOLTAGE
FIELD WIRING OPENING

/

CONTROL CIRCUIT
FIELD WIRING OPENING

—28—

,,,CONTROL EOARD

,“

/’

/

/(’I

/

,1
,,

.

/

,coNTROL RELAY

.-

, FAN MOTOP

MODE SELECT SWITCH UNIT

I /’ 1,

I

/

II u“

POTENTIOMETER

/“””

/“’’FusEs

FUSE HOLDERS

TERMINAL BLOCK

~ CONTROL TRANSFORMER

POWER TRANSFORL’ER

INVERTER

/---’-’ ‘EACT”R

CIRCUIT BREAKER

/’”

WIRE CHANNELS

II -—H————H——+

lu-

FIG. 1-24 INSIDE OF CONTROL PANEL

1 ABSORBENT PUMP

NO.

MAGNETIC CONTACTOR

\

~ MAGNETIC CONTACTOR
)
i

~ REFRIGERANT PUMP

b
i

~ PURGE PUMP

)

)
i

~TERMINAL BLOCKS ,

NO.2 ABSORBENT PUMP

MAGNETIC CONTACTOR

MAGNETIC CONTACTOR

CONTROL CIRCUIT

MOTOR TERMINAL BLOCK

r

P

HIGH VOLTAGE
FIELD

INTERNAL WIRING

CONTROL CIRCUIT
FIELD WIRING TERMINAL BLOCK

WIRING TERMINAL BLOCK

—2 9–

(7)nPmlS TEAMCwlRclv ALvE/ww EAM TRAP

REDUCI N

G

iPOSITION R

STEAM 1 LET

Y

FIG. 1-25 STEAM TRAP(PNEUMATIC TYPE)

‘-i=+’

STEAM OUTLET

/-

DRAIN INLET DRAIN OUTLET

F}G. I-26 STEAM TRAP

—3 o—

(8) SYR430L

a)b)Chiller construction

symbol Name

EVA

ABS

COND

HT.GENE

HT.REC

LT.GENE

HT.EX High. ~tum kit exchanger

LT.EX w tanperatm? bet exchanger

#l AESKJMP No.1 Akrilmt llllnp

#2 AESKJMP

REF PUMP

Temperatum senmr

~tor

Hmt reclaim7-

Law tmlpe?atum genelatm

NO.2 Aknrbent Lump

——

Refr&ant pmlp

SY-mM

DT1

DT2

DT3

DT4

DT5

DT6

DT7

Name

Chilled water outlet

Ccoling water cutlet

High &mpe&mz generator

Low temrecatlm fmet-ator

.———

— —.

Chilled water inlet

Cooling water cutlet

Location

Chilled water outlet pipe
before flange.

cooling water

cutlet me

before flange.

%dc

Si& of high ~k

generator.

Intermediate fmlutim pipe of

LT.GENE outlet.

—.—

Refrke=mt pipe of ~
outlet.

Chilled water inlet pipe

kfm flange

Cooling water inlet pipe
before flange.

–31–

symbol Name

Location

23CH

TC1 Strom dTain tmpemtum

El ,E2 ,E3 GmeAOr wlutim level

33AL Genmitor duticn level

63GH Gena’atm- DFslJR

69CH (Xilled wakr fkw Witch

PCH Palladium cell heater

I SYmM

V1

I

V2

Electronic controller

electrod

UXltrol” M swim

I

I No.2 m valve

Name

mvitrh Near b solutim Mel box

Inchxkd opemtim bc9rd

Skam dram outlet pipe
beklm flan@

Solution level box beside the
high temperature ~ti

In the control panel “

Chilled water outlet pipe

Topcnthe~ tank

I

Location

Besick themtank

p?si(ktheml%etadc

I

V3

V4

Refrigerant blow valve

I

IBesdethelxlrgetark

Evaporatm Sirk?

I

I

—32—

e) Service valve

&mhol

Name

Svl Service mlve for maintmane

SV2

&nice wlve for manomk

SV3 *ice valve for refr~t

SV4 servi~ wdve for diluted

solution

SV5 &nice valve for rnternkxiiate

solution

SV6 Sewim mlve fw cmcmtrated

solution

SW

Service valve for gemator
~-

SV8

Setvice valve for ~tor
maintenance

SV9 !krvim valve for hczit

ex-

Imintmance

Location

E?eskk?themiank

Besi&t&lxJnge tank

(xl the refrigerant pip!?

I’karthe No.lalKr<lxmlp

(Outkt

PiPe of xl AK FuMP)

kskk the high tenzxzati
heat cX-

&si&thebw*ture
kat ex&arw-

On the solution level box

I?ottanofthehigh_k

-*
kick of high tmpczature

bt mknger’s I-Ezl&

f)

Sight glass

g)

F

Svl 1

Symbol

D1

D2

D3

ml

xl

Servi@ valve for @lladium

Tcx)the~tank

cell

Name

I.kunwr for dilukl mluticn

Location

outlet pipeof#l A5s FuMP
afk - valve

IMnPer for intermediate
solution

IkxnP=- fcr cxlncmt?akll
solution

Name

MeTIIEdiate dltim pipe

betwem HTE4 and LTGENE

Gncmtrated Solutial pti

betwem LTJ23W and LTEX

Location

sight glass fcr reil-igerant Ikskk eVam&or

level

—33–

114SAFETYElm

(l) CHLLED WATER AN) COOLNG WATER

No Item

I

Setting point Alarm indication

1 Ink-lock of chilkd water pmnp

2 Interlock of Cmling water m

3 Fw flow rate of chilkxl wak

4 Gilled wak- fmzz IX-&Aim

(LAYw-cutof chilled wati cutlet knp.)

5 Low-cut of mling water inlet kmpemti

(2) HGli TEWERATLRE GEMRATOR

No

High-d of ~tor tempemtum(boling) 165°C (329”F)

6

Item

Indication lamp.

Indication lamp

50 %

2.5°C (36.5”F)

19”C (66.2”F)

after 30 min.

Setting point Alarm indication

Indication lamp

Indication lamp

Indication lamp

Indication lamp

7

High-art of gmmtcr ~

8

High-art of gmmitcr sohrticxI level

Ixnv-art of f3mm#or soluticn level

9

Crystallization protection

10

(High-cut of mhrticn an(mtmticn)

kg/an2G

o

I

.—

65% Indication lamp

after 10 mm. -

Indication lamp

I

Autmmtic red

Indication lamp

—34–

(3) M3TOR

No

11

12 Ov

13

(4) OMRS

No

14

15

16

Item Setting point

~t day of !40.1 aklrklt plum

Ov

ellJrrmt mlayof No.2aklrbentpm-lp Rated ampemge

I

ermn-ent relay of mfrigemnt m

Ov

Item

rnvder Protection

Fuwer interruptim protectial

Wttering p@.ecticn of flow witch

RaM ~

MM ~

Setting point

100 m sec.

3 sec. Indication lamp

Alarm indication

Indication lamp

Indication lamp

Indication lamp

Alarm indication

Indication lamp

Rupture disk

17

–35–

SECTION2 OPERATION

CONTENTS

&e No.

~I(jN 2

-TION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...~~

2.1 -TION Bf)~ .. . . . . .. .. . . . . . .. .. . . . . . . . . . . . . . .. .. .. .. . . . .. . . . . . .. .. .... . . ..~7

( 1) DETAILOF OPERATIONBOm ------.-.-------.....-... -...............37

(2) INSITWCTIONw mzYs ------.--------------------.......-... -.-..-........3g

2.2 TEMpERA~ ~1~ .......................................................4o

(1)

DETAIL OF MONITOR .. . . .. .. .. . . . . . .. . . . . . . . .. .. .. . . . . . . .. . . . .. .. . . . . . . . . . ..4o

(2) ~ OF ~ DIGITALDIspLAy --..............................41

(3) SETTI~ - ........................

------””----”----------------”----”43

2.3 SEIJ?-DIAG~I~ mION -------...-...................................46

(1) SEWDIAGW3TICSFUNCTION-----------------.--.-------.............46

(2) ERRORMESAGE

BY f31F-DIAGNOSTIC ..............................47

2.4 PREPARATIONFORSTARTw .................................................49

(1) CONFIRMATIONOF OPERATION

WI- ...................... 49

(2) CONFIRMATIONOF SETTINGnI~ --------.-...---.................49

(3) aFFIRMATIONw ~IPMENT .......”

....................................~()

2.5 ~ERATION -----------------------................................................5l

~1~ -TION ....................................................... 51

(1)

- (2)

OPERATIONBOARDWRINGOPERATION

~~~ TIM C~T .................................... ........... ......55

(3)

MAxI~ 1~ ~~OL ------------------.............................56

(4)

Imm co~m w #1 ~ PUMP-.................................57

(5)

(6)

_ OF CHILUZDWA~ ~~ ..........................58

------”---------”””-------””-53

–3 6–

21 OPERATIONBOARD

( 1 )DETAIL OF OPERATION BOARD

CD... Q.:

.. ............

; TWPI?.RATORE

0 GENERAToR

!

\ o STEAM ORAIN

;OCNIWTLET

:OCO IINLET

! 0 CONTRCLVALVE

I==sii? ‘::’!

'------------------------------------------------------- T . . . .. . . . . . .. . . ...1

EATEXALARM

!

;ocHwmP.

~OCHI FLOW RATE 0#1 ARS. FfJIIP
:OCOUUY.
;O@W FLOW RATE

. . . . . . . .

OPERATION RIKORD
0 CHI~ OF’ZRATION
o c!ilLLm ottPFF

OREF. FIJIIP OPERATION ,. . . . . . . . . . . . . . . . ..~~

MOTORALARM

0

RW. PUMP

O #2 AK,. PIMP

SET POINT

orHmnP:: /STOF RON

. . . . . . . . . . . . . . . . . . . . . . . . .

GENERATORALARM

0 PRF-SSORE

o TIWPKIM(XNTRAT ION

a.:

::

::

,,

;0 OCNILLER ;

::

:0 OREF. PUM? \ :

;0

onl ARs. Pur :

!!..!.:E...I

AURM ( IKI?WJXK)

SYSTEM

OCHEPUIIP

OCOWFUMP

G9 -,

:.

, :

:

:

B~ .SlT3f

~. .. . . . . . . . . . .. r––q

[.E E:’

... .. .. . . .. .. . . .. . . .. .. .. . . . .

. . . . . .. .. .. . . . . . . . .

;-0 ALAM

.,

, :

: ;
: :

:,

I

.,

~-cs

FIG. 2-1 Typical Operation Board

i?5.!

–3 7–

.

(1)Monitor

This area has some indication lamps

points, operating hours, number of

temperature, and digital display (Red ) which indicates

(2) Select key

There is “SELECT”key for selection ofdisplay data item.

in sequence by push the key.

automatically after approx. 1 minute.

chilled and hot water parameter.

(3) Equipment RUN-STOP indicator

This area has some “RUN” indication lamps (Green) and some “STOP” indication lamps

(Red) which indicate conditions oftheequipment.

(4) Alarm indicator

The indication lamp flickers when the chiller has abnormal condition.

(Red) which indicate temperature of several

burner ON-OFF times and setting point of

data of lighted item.

The item is displayed

The item returns to generator temperature

There are ^and * keys forsetting of

(6)Operation mode select key

There are keys for chiller operation.

(7)Alarm buzzer stop key

There is buzzer stop key when the buzzer sounds by abnormal condition of the

chiller.

—38—

(2) INSTRUCTION OFKEYS

m

“SELECT” For theuseof item selection for display.

The item is displayed insequence
Change the item automatically when you push thekey continuously
than 1 second.

“^”

“*”

bypush the key

“OPERATION"

“STOP”

“LOCAL"

Operate the chiller by local mode.
The chiller does not operate when the mode is setto"remote"
The indication lamp on "OPERATION"key flickers when themode isset

“Local” .
Forthechiller operation, You must push the key over 1second
continuously.

This is protection of the chiller.

Please push the key continuously until flicker the indication lamp on

the key.

Stop the chiller by local mode.

“STOP” key is accepted on either mode of “Local” and “Remote”.
The indication lamp on “STOP” key flickers when the stop signal is
accepted bypush the key.
For the chiller stop, You must push the key over 1 second
continuously.

This is protection of the chiller.
Please push thekey continuously until flicker the indication lamp on
the key.

For the use of operation of the chiller by

“OPERATION”key on the

operation board.

When themode isset “Remote”, the chiller

does not operate.

“REMOTE"

“ BUZZERSTOP” For the use of stop of alarm buzzer when the buzzer sounds by

Fortheuse of

"OPERATION"

operation ofthechiller by remote panel

key is notaccepted on "Remote" mode

abnormal condition of the chiller.

—39–

-“..

2,2TEMPERATURESETTING

( l) DETAIL OF “MONITOR

TEMPERATURE

“0 GENERATOR

o STEAMDRAIN
0 CHW OUTLET
o COWINLET
0 CONTROLVALVE

:

I

The data is displayed on the digital

indicated by indication lamp of item.
The data on the digital display is
1 minute automatically.

I

Fig. 2-2 is drown generator temperature.

z 3.

FIG. 2-2

OPERATIONRECORD
0 CHILLEROPERATION
() CHILLERON-OFF

0 REF. PUMPOPERATION “

I“o’%fi

W

O HOURS
OSTARTS

a

Monitor

display by “SELECT”key.

The item is selected by push on “SELECT”’key.

returned to generator temperature after approx.

SET POINT

0 CHWTEMP.

E

v

The selected item is

The indication lamp after digital display
Unit of temperature is “F ( Fahrenheit ).

lights according to unit of item.

–4 o–

(2) SEQUENCE ON THE DIGITAL DISPLAY

iteiu is displwed in sxqueme

Sequence Lighted indication lamP

(symbol )

—.

Generator temperature

1

(GENERATOR)

Steam drain temperature I

2

(STEAMDRAIN)

Chi1led water

3

out let tenIperature

(CHw OUT~)

Cool ing water

4

inlet temperature

(CoW INLET)

Steam control valve

5

position

(CONTROLVALVE)

bypush the key.

Sample on the digital display

4--

.—

T

&qumce items am as follows;

3

G

G.

G

( 300.0)

z D 3- i2

( 203.0)

- 4- E

( 44.0)

H 5. G

( 85.0)

—

zfZ 9-7

( 209.7)

Chiller

6

Operating hours

7

;.:=; : ‘:”:”’;:”)-

l“’”

times

(CHILLERON-OFP)

Refrigerant pump

8

operating hours

(REF.PUMPOPERATION)

:

z=

( 120)

9 G D

( 900)

–41–

Sequence Lighted indication lamp

— —

9 Chilled water

temperature setting

for temperature

(CHWTEMP.)

10

—— .—

11

Chilled water
temperature setting I

for proportional

(CHWTEMP.)

Chilled water
temperature setting
for integral

——

— —

Sarnpleon the digital display

.— -

I d

\

F

‘

- w D

z. G

—

(t 44. o)

(P 2.0)

(I 800)

12 ;;;*

for differential

(CHWTEMP.)

Display

Note) 1 It will happen to display below number between No.1O and No.11.

sequence repeats No.1 thru No. 17.

During chiller operation,
when cooling water inlet temperature is below setting point.
set automatically during below setting point of cooling water
temperature.
below setting point of cooling water inlet temperature.

Chilled water temperature is control by this number during

below number is displayed on the digital display

EImIml(c464,

;, ,

(d 10)

.

This number is

inlet

–4 2–

( 3) SETTING METHOD

Chilled water outlet temperature is controlled by digital PID (Proportional, Integral
and differential).

a)

Chilled water setting point range

It is able to get chilled water of stable temperature.

Setting item Range

step

Chilled water outlet 41.0- 53.6 ‘F 0.1 -0.2
temperature

Proportional

Integral

Differential

(t)

(P) 2.0-

(I) o

(D)

o -’ 100 SEX

10.0 0.1- 0.2

- 2500 SEC 10 m Por PDactimat OS

19X P or PI acticm at O w

Note) Temperature data sampling is 10 second interval.

Notice 1.

Please confirm the indication lamp of setting item before setting.

“^”and” V

2.

If you change the setting during chiller operation, chiller is controlled by

3.

keys donot accept tocross the range number.

new setting point soon.

Original setting point is set at factory.

4.

5.

Setting point is stored by non-volatile memory of semiconductor.
Therefore, setting point is kept continuously when power cut off.

–4 3–

.

c) To take

an example(Chilled water setting)

Setting item

Chilled water outlet
temperatlnw

Proportional

(t)

(F’)

:~tial+-t=: +++=+

Setting procedure is as follows;

10.

1 “SELECT”

2

Key

“A”

Digital display Explanation

, ImmIIl

Original

44.0 ‘F

2.0 2.5

Select the chi 1led water temperature
setting(CH MTEMP.) by push the key.
The indication lamp of “CHV TEMP.”

(t 44.0)

1ights. .

Target

46.0 ‘F

4

5

—

6

~

(t 44.2)

“A”

3

ErIIml

(t 46. O) data decreases 0.1. ”

“smT”

“A”

“A”

m

(P 2.0)

~

(P 2.1)

~

(P 2.5)

‘;git:i;$&es 0-1-

~:+j!y~;:;;:

Display data mdlcates proportional
‘Shthe “Win: ‘w”

of chi 1led water outlet temperature.

-—

‘lE;t:i;:zesO1*

—.

~gJ$FJ:::;::*
data decreases 0.1. ”

–44–

I

No.

7

8 “A”

10 “SEIJXT”

11 “A”

Key

I

“SELECT”

Digital display

I

Enm!Ill

(I 800)

EInml

(d 10)

I

Push the “S3JXT” key.
Display data indicates integral of
chilled water outlet t~ture.

l%sh the “~ key.
Display data indicates different ial
of chilled witer outlet temperature.

J@lanat ion

12 “A”

—4 5—

203SELF-DIAGNOSTICSFUNCTION

( 1 )SELF- DIAGNOSTICS FUNCTION

Self-diagnostics function starts, when the lnwaker of the chiller tum on.

a) %me indication lauws light as shown Fig.2-3.

Symix)l
Symbolo: Indication lamP lights.

o :Indication lamP does not litit.

.“.

symbol B : Indication lamP of the key lights. “ .,

TEMPERATURE
O -ATOR
c)SIEAHDRAIN

oawm

ocQwlNLEr
O CCNTROLVALVE

HZHZ13ii52 “

WATDlALARH

● 0IWTENP.

● OIWFLOI RATE ● ttlAES.PunP

● COWTENP.

● COWPWR ATE

OPERATIONRWORD
0 CXIW OFI?RATION
o cNILLmON-m

0

REP. FWP OPERATION

KITORALARM

● RW. PUMP

● #2ABs.mP

SRTPOINT

ooiw TulP.

v

GENERATORALARM SYSTRUAL4Rn(INTERJxm

● ms.$m

● TaP/~ TION

STCP RUN

● ● OIILLER

● ● REP.PUIIP

tHABs. PtnlP

● ●

● ● WAW. W

● ● PURCE PUMP

● CNFPWP

● cormP

FIG. 2-3

b)

Buzzer sounds 4
Some indication

c)

Self-diagnosis is worked.

times after 1 second of turn on the breaker.

lamp turn off after buzmr.

Version number is displayed on the digital display, if power circuit. has no error by
self- diagnosis.

Version number is as shown;

mzIml(v7.,

.

Note) Version number subjects to change chiller’s specification.

d)

Generator temperature is displayed on the digital display, if control circuit has no
error by self-diagnosis.

Generator temperature is as shown;

(Blew number is for reference.)

–46–

.-

( 2) ERROR MESSAGE BY SELF- DIAGNOSTICS

Error message is displayed on the digital display, when the error is found in the
circuit.

In case of the error, it is necessary to call Sanyo’s service representative.
If necessary, please call to Sanyo’s service representative after memorized the error

message.

Power supply error

a)

This error massage is indicated the error of power supply to electronic controller.
The key access is not accept on this message.
It is necessary to call to Sanyo’s service representative.

~ (,,,)

Electronic controller error and setting point error

b)

(The message on the digital display flickers)

This error message is indicated the error of electronic controller or setting point.
Please call to Sanyo’s service representative with below error number.

It is not accepted the chiller operation during indication of this message.

=( Err*,

Indicate the kind of error message

Kind of error message

-------- @ Error number ERR-6

:-----i

; ;“”1
:: -

::
::

:-

-------------------- @ Error number ERR-5

,.

‘ --------------------------- @ Error number ERR-4

}.. . . . .... ~ Error number ERR-7

— ------ @ Error number ERR-1

. ..........

---- 0 Error number ERR-2

●-------- @ Error number ERR-8

‘--------------- @ Error number ERR-3

CDError number ERR-1 (Electronic controller error) : Call to senice.
CDWor number EIU-2 (Setting point error)

@ Error

@ Error number ERR-4 (Number of times data error) : Call to sewice.

@ Error number

@ Error number ~-6 (Electronic

number ERR-3 (Electronic controller error) : Call to semice.

~-5 (@eratiw buns data error) : Call to service.

controller error) : Call to service.

: W the

Semite.

to

S?tting

point and call

@ Error number ~-7 (Electronic controller error) : Call to =~ice.
@ Error number ~-8

(Electronic controller error) : Call to mvice.

–4 7–

c) Power failure error

(The message on the digital display flickers)

This error message is indicated to return the power after power failure during
Operation( include dilution cycle operation).
The power failure means not only power failure( include over 100 millisecond power

interruption) but also artifical power turn off the breaker.

If will happen to indicate this message when the breaker is turned on at first after
field wiring.

~(~.~rr)

‘1

This error

d)

Sensor error

(Ihe message on the digital display flickers)

This error massage is indicated the temperature sensor
Chiller stops safety when high temperature generator
chilled water outlet temperature sensor(DTl ) are broken
The chiller operates continuously, when other sensors(DT2, DT4, DT5, DT6 and DT7) are
broken.

Please call to Sanyo’s service representative.

Kind of error message

message is cleared when “OPERATION”keyis pushed.

trouble.

temperature sensor( DT3)
during operation.

But it is possible to control bad condition.

............

.........

--- Indicate the kind of error ~

:------------------------------------------@ Error number SER-2 (DT2:
: :----------------------------------

:------------------------------@ Error number SER-3 (DT3:

@ Error number SER-5 (DT5:

Cooling water outlet)
Condenser)
High temp. generator)

and

- ,....! ‘ , — ,

I

— ,......i :..,

I

—0/

Note) It is posible to change the display data and ~tting point on the digital display

using the”SLWT”, ”A” and “v “ keys during error massage indication of
Electronic controller error, setting point error, pcwer failure error and -r

error.

— ------------0 Error number SER-4 (DT4:

1..........-----@ Error number SER-1 (DT1:

—

‘----;----------------------@ Error number SER-6 (DT6:

● ---------0 Error number SER-7 (DT7:

–48–

Lowtemp.” generator)

Chilld w.outlet)
Cooling water inlet)
Chilled w.inlet)

2}4PREPARATIONFORSTARTUP

Please confirm below items again before operation.

(

l) CONFIRMATION OF OPERATION SWITCHES

a) Operation switches in the control panel

~;CI~;~DL

AUTO F CLOSE

MANUAL

\ \ \ \

> pu~p

(D Steam control valve mode select switcl-------------

REFRIGERANT PURGE

AUTO

STOP

MANUAL.

FIG. 2-4 TYPICAL OPERAT

PUMP

STOP

START

ON SWITCHES

“AUTO”position

@ Steam control valve open-close Witch ----------------“STOP”’position

@

~frigerant pump mode !x?lect switch ~~---------------“’AUTO”pxition

@ We pump operation switch -------------------------------“STOP” position

( 2 )CONFIRMATION OF SETTING POINTS

a) Chilled water “temperature Wtting

point

(Setting sample)

@ Chilled water outlet temperature ------------------------- 44°F

Q Proportional

..... ......

@ ]n~] ................................ .......... ............... .....800”

@ Differential

–4 9–

2

10

CONFIRMATION OF EQUIPMENT

( 3)

a) Steam line

(1) Open the main valve of steam line.

(2) Never leak the steam around steam line.

b) Water system

(1)Some valves for chilled water line. .

(2) Some valves for cooling water line.

(3) Other system line.

c) Cooling water inlet temperature

(1) Cooling water inlet temperature

(2)Take care that the cooling water

d) Electric wiring connection

(l) Interlock of chilled water pump

(2) Interlock of cooling water pump

Note) Interlock signal is detected by energizd DC 24V from the chiller.

Please select the contact resistance within 100Q .

(Please seperate other power line.)

e) Remote signal connection

No

1 Answer back signal output Operation : ON

2 Stop indication lamP

-1
3 operation

Signal name

—

for operation stop :OFF

indication output ON signal when C/H

.— —— _

lamp

—

4 Alarm indicatim lamp output Abnormal : ON

——

5 Cooling mcde indication Output [Cooling mode

lamp

I

6 Remote ON-WE signal Input

..—

inlet temperature is kept above 66F

Signal Introduction

output ON signal when

chiller/heater stop

OPemt.es.

i--

Operation : OFF

:(IN

ON-OFFsignal of C/H

Pleas? select the
resistance
AC250V O.lA.

within

I

–5 o–

(l) COOLING OPERATION

a)Local mode operation

<Operation)

confirm theoperaticn mode selectkey ontheoperation board.

“LOCAL” indication lamp of the key is lighting.

Ifyou operate the system bymanual, please operate chilled water pump and cooling

water pump sequentially.

Please continue topush the "OPERATION" keyonthe operation board atleast 1sec.
Confirm tolight “OPERATION”indication lamp ofthekey.

Chilled water pump and cooling water pump areoperated by automatically, ifthe
system

Chiller isoperated automatically bysequentially.

isconnected tothechiller.

<STOP)

Please continue topush "STOP" key onthe operation board atleast 1second.

Confirm to light “STOP" indication lamp ofthe key.

When thesystem is
Cooling water pump stops approx. 1thru 5 minutes later.
Chilled water pump stops approx. 2thru 6 minutes later.
chiller stops afterdilution cycle operation forapprox. 6 thur 15minutes.

connected tothechiller, pumps arestop asfollows;

—51–

1

b) Remote mode operation

w

(Operation>

(1)Confirm the operation mode select key on theoperation board

"REMOTE”indication lamp

(2)Ifyou

water

(4)Chilled

Please cut offthechiller operation switch (orstopswitch) on the remote control

(1)

panel.

When thesystem isconnected

(2)

Cooling water pump stops approx. 1thru 5minutes later.
Chilled water pump stops approx. 2thru 6minutes later.
chiller stops afterdilution cycle operation forapprox. 6 thru 15minutes.

operate thesystem

pump sequentially.

make contact with

water pump and Cooling Water

is connected

is operated automatically by

to the chiller.

to the chiller, pumps arestopas follows;

squentially.

Please stop the secondary airconditioning units after stopped chiller

(3)

( 2 ) OPERATION BOARD DURING OPERATION

a) The

operation beard during normal operation

Generator temperature is indicated on the digital display during operation.

Indication lamps light during operation as follows;

Symbolo : Indication lamp does not light.
symbol● : Indication lamp lights.
symbolH : Indication lamp of the key lights.

TENFSRATURR

● GENERATOR o fXIM OFERATION

o SIEAN DRAIN o CHH-LJR

ooi~m

o CO W INLET
o CWTRCL VALVE

OPERATION RECORD

OROFF

REF. FUMP OPF.RATION

0

A

v

SET POINT

Ooirm

STOF’ RUN

o

● oilLLFx

o

● REF. PIMP

o

● I!l ABS. PUMP

0

● #2 AM. PU!iP

● O PURGE PWP

o ALMY

Oizzm STOP

r—-j

k——

WATER LINE ALARM
ocslnT?lLP. 0 RIF. PUMP
OOi WFLW RATE O#IAM. PUHF’
00JWTEW. o #2 AK. PUMP 0 TEIIP/CONCENTRAT ION
OOIWFLCIW RATE

MOTOR ALARM

GENERATOR ALARM
0 PRJ?SSURE

FIG. 2-5 Typical operation bar-d

SYSTEM ALARM ( INTEIWXX)
OCNW PUMP
OCOSPUJIP

–53–

c) Power failure error masage during operation

This message is indicated when it is happen to power failure above 100 millisecond.

Ihe message on the digital display flickers.

-(~.~rr) ~

Chiller
Chiller
after return the power supply.

d) Sensor error message

The message on the digital display flickers.
This error message is indicated
Chiller stops safety when high

chilled water outlet temperature
The chiller operates continuously,
broken.
Please call to Sanyo’s service

stops immediately, when it is happen to power, failure.

has no dilution cycle operation.

the temperature sensor trouble.

temperature generator temperature sensor( DT3) and

sensor(DTl ) are broken during operation.

when Other sensors(DT2, DT4, DT5, DT6 and DT7) are

But it is possible to

control bad condition.

representative.

.............

‘-----------Indicate the kind of error message

Please” operatee dilution” cycle operation ‘

Kind of error message

~--------------------------------------:--@ Error number SER-2 (DT2:

-: :

I t--~ ~ I I

I l-----~;“”-1 }--------------@ Errornumber SER-1 (DT1:

—0/

Note)

It is posible to change the display

using lhe”SELIET”, ”A” and “
Electronic controller error, setting
error.

,--------------------------------@ Error number SER-5 (DT5:

....

:! --------------------------@ Error number SER-3 (DT3:

.:

— ------------@ Error number SER-4 (DT4:

——

‘--------------------------- @ Error nuuber

●----------@j Error number SER-7 (DT7 : Cool ing water inlet)

SER-6 (DT6: Chilled/hot w.inlet)

data and setting point cn h digital display

v

“ keys during error masage indicaticm of

point error, puwer failure error and sensor

Cooling water outlet)
Condenser)
High temp. generator)

Lowtemp. generator)
Chi1led/hot w.outlet)

—b4—

(3) CUWIW Tt& CHART

a) Dilution cycle

Operatim tim of

STEAM
CONTROL
VALVE

81 ABS

PUMP

ti2 ABS

PUMP

REF

PUMP

CHILLED

WATER

PUMP

COOLING ‘N

WATER

PUMP

100%

o

ON

OFF- –

ON

OFF- —

ON

OFF- –

ON

OFF- –

OFF

diluticm cycle is &cidd by gerEY+x tmpemturw.

I

I

I

I

I
I
I

I
[

I

I
I

I I I

1
I
I

I
[
I
I
I
I

I

I

I I

1

I

I

I
I

I I \

I

I

i

I
I

I
I
I

I

I

I
I
I

I
I
I

I
I
I

I

I

I

d

MIN. ~

I
I

I
I

I
I

I

I
I
I

I
I
I

I
I

I

I

I

I
I
I

I

I

! T2
I

I
I

I
I
I

I

I
I
I
I

I
I
I

I
I

I

I

I

I
I

-1

L,To*

CLOSE TIME OF CONTROL VALVE

FIG. 2-6 TIME CHART OF DILUTION CYCLE

—5 5–

(4)MAXIMUM INPUT CONTROL

Steam control valve is controlled for chiller protection by cooling water inlet
temperature without specification.
Maximum input is decreased,

whencooling water inlet temperature is below 28C (82.4F)

or above 33C (91.4F).

a)

Control data

cooling water
controlled by

b)

Control diagram

.

inlet temperature

the data.

..— ————— .

10

z

~7.5

m
i-

.

5

100’ c

212°F

is detected 1 minute interval.

-—— .—— ——— ___ __

125.C
257”F

GENERATOR TEMPERATURE

FIG. 2-7

P

150.C 155’C

302.F 311”F

Maximum input is

CRYSTAL IZATION

EVASION AREA
FOR SOLUTION

HIGH TEMPERATURE
EVASION AREA
FOR HT.GENE

1

100

x

80

60

40

20

.——— —l– _______

I

J

.—— ——

I
I
I
I
I
1

I

I
I

I

o~

19.C2(I”C

66”F6B”F

22” c
?2” F

COOLING WATER INLET TEMPERATURE

1

——. ——— ———

I
I

24. C 26°C
‘?5’ F

79.F

FIG.

I

+––––_L_

I

I
I

I
I

I
I
I

I

2fl’c

82°F 86.

2-8

30* c

I
I

I

I

I

I

I
i
I

I

32°C

F

90” F 93.F

34°C

I

I
I
I
I
I
I
I

I

—56—

(5) N’v?3?TER(xYWRuoF#l PJ3s FW?

Rotatkr-1 d N&l aklrtxlt ~ is Cr=?+alkd b’ invel-kr.

60

N

x

>

c1

z

I.1.l

28

a
a

w

w

IL

0

o

100

COOLING LOAD (%)

FIG. 2-9 TYPICAL CHAR ACT RI STIC

—5 7—

( 6) PRESET OF CHILLED WATER TEMPERATURE

Setting point of chilled water outlet is imreased automatically, when cooling water

inlet temperature is lower.

digital display board.

In this case, setting point is able to indicate on the

Please push the “SELECT”key.

Temporary setting point is

indicated after chilled water setting point.

mIzIml(c464, ““”

.

,“.

Please check the cooling water inlet temperature, when you change the setting point of
chilled water outlet temperature.
to cooling water inlet temperature.

12”

C” ._–––––––_–––––

54’F

r /

11”

+ 52”

Because there is the limit for setting according

Setting range is as follows;

1

I
I
I
I
I

I

I

I

I

1

i

I

I

I
I
I

1

I

I 1

20” C 22” c 24* C 26*C 26° C
6B” F 72’ F 75” F 79” F B2° F

COOLING WATER INLET
TEMPERATURE

I

I I

–58–

FIG. 2-10

SECTION

3 MAINTENANCE

SECTION3 MAINTENANCE----------------------- ----------------------------------------59

CONTENTS

Page No.

3.1 DAILYwIm~ "----------------------------------------------------------6o

(1) INSF12CTION0!? CHI~/HEA’IER ---------------------------:------60
(2) OPERATIONDATARECORD------------------------------------------------6O

3.2 9MSCNALMAINTENAKE-------------------------------------------------------62

(1) PURGING---------------------------------------------------------------------62

(2) MAINIENAMXOF PURGEPUMP-----------------------------------------64
(3) REFRIGERANTBLOWDOWN-----------------------------------------------65
(4) SOLUTIONMANAGEMENT---------------------------------------------------65

3.3 WATERTREATMENT--------------------------------------------------------------66

( 1) wA~ TREATMENT----------------------------------------------------------66
(2) WATERTREATMENTFOR LONGTERM SHUT DOWN------------------ 69

3.4 MAINTENANCEFOR INVER’IER------------------------------------------------70

( 1) INSULATIONTESTFOR INVERTFR““”-”-”---”---”-”””-------”-”””””-”-70
(2) INWECIIONBEFOREOFRRATION--------------------------------------70
(3) MAINTENAKE----------------- --------------------------------------------71

M&WWENT LOCATION-------------------------------------------------72

(4)

3.5 PARTSINSPECTION-------------------------------------------------------------73

–5 9–

3.1DAILYMAINTENANCE

(1) INSPECTION OFTHE CHILLER

If you find the abnormal condition, please call to service representative.

(1) Steam leak.

(2)Abnormal noise ofabsorbent pumps

(3)Abnormal noise ofrefrigerant pump.

Please ask below items toyour system

(7)cleaning ofthe cooling tower and strainer ofthe

(8)Check thecondition of cooling tower.

(9) Check the air vent of the pipe line.

(2) OPERATIONDATARECORD

Please record the operation dataregularly.

It is useful to protection of trouble shooting.

The sample of operation data sheet is shown

contructor.

cooling water line.

Fig.3- 1 (see to next page).

—6 O—

Operating record sheet

Iterns

1 Time

2 Ambient temp.

3 Chilled water flow rate

4 Chilled water inlet temp.

5 Chilled water outlet temp. “C / OF

6 Cooling water flow rate

7 Cooling water inlet temp.

8 Cooling water outlet temp. “C / OF

9 Generator pressure

10 Generator temp.

11 Steam drain temperature
12 Steam supply pressure

Uriit

“C / “F

m3/h “ gpm

“C / OF

mglh “ gpm

“C / “F

cmHg

“C / OF
‘C / OF

psig

Date :

. .

//

.

.

.

13 Steam control valve

position

Remark:

%

FIG. 3-1

—61—

3.2 SEASONAL MAINTENANCE

It is

solution, etc.

( 1 )PURGING

a) Purging procedure

(During cooling operation and Stop)

necessay for the chiller to maintain the purging, refrigerant blow down and

Operate the purge pump.

Open the No.1 purge valve (VI).
Check the attained vacuum
by the manometer.

(Vacuum is below 4 mmHg.)
Open the No.2 purge valve (V2)
for 1 minute.
Close the No. 2 purge valve (V2).
Open the No.3 purge valve (V3)
for 30 minutes. “
Close the No.3 purge valve (V3).

Keep to operate the purge pump
for 30 minutes.
Close the No.1 purge valve (Vl ).
Stop the purge PumP.

PURGE PUMP

/

/

/’

/
/s”l

\vl

h

MANOMETER

PALLADIUM
CELL

V2

V3

SV2

Note) 1. Please open gas ballast valve

until sounding exhaust gas.

It is easy for purge pump oil
to become dirt, when gas ballast
valve

close.

T

3-2 PURGE UNIT

FIG.

\

\

PURGE
TANK

LIQUID

TRAP

–6 2–

Mm9m!mmtofthevam

b)

Valve position

No Mmsammwn

1 Attaind vaammoflhe~rumP

2 Pressure in the shell

3 Pllrs2tank~

Reading method of

Please read the differential ofmercury surface
Usually, the right side surface of

If it reverse, please call to service representative.

manometer

t item

mercury ishigher

43

wnll-4-

1

V1

Open Close Close

Close Close

Close

V2 V3

open Close

than left side.

open

DIFFERENTIAL

‘PRESS”-’

t

0

I

FIG. 3-3 MANOMETER

3

0

—6 3–

(2) MANTENPNEW- FUWEFUW

Please change the purge pump oil, when theattained vacuum ofpurge pump does not

attained to below 4 mmHg.

Open the drain cock.
Discharge the oil.
Close the drain cock.
Change the oil from oil surely port until the center of sight glass.

Note) l. When you change the purge pump oil, please stop the purge pump.

2. Recommend the turbine oil for purge pump. (IS0 viscosity grade : 56,58)

3. If purge pump does not operate, please call to Sanyo’s service
representative. 4. If attained vacuum above 4 mmHg when you change the oil,
please call toservice representative.

LIQUID TRAP

T

BALLAST

VALVE

“K

\

L

PURGE PUMP

FIG. 3-4 PURGE PUMP

/—EXHAU5T GAS PORT

DRAIN PLUG

SUPPLY PORT

OTOR

.

—64–

few absorbent mixes in the refrigerant during cooling operation.

Chilled water outlet temperature rises up during refrigerant blow down.
But temperature drops after blown down.

b) Blow down procedure

(1) Confirm tooperate the refrigerant pump.

(2)Open theV4valve(for refrigerant blow valve) for 1 or 2 minutes

(3) Close the V4 valve.

(4)repeat (1) (2)and (3)about 3times
Note) Take care that the refrigerant pump does not have cavitation.

(4) SOLUTIUNMANAGEMENT

Itisnecessary

for the solution (Absorbent) to manage the inhibitor.
The inhibitor adjustment is required technical knowledge.
Please consult with

service representative.

\v 4

FIG.

—6 5—

3-5

3.3WATER TREATMENT

It is important for chiller to manage the water treatment.

As the water treatment is required technical knowledge, please consult with service

representative.

(l)WATER TREATMENT

The cooling water ofthe open type recycling cooling tower lowers thetemperature of
the cooling water using the heat of vaporized latent heat and is reused. As this
time, the water isevaporated anddissolved salt(hardness
sulfate ion, etc. ) m the water will increase Namely, thecondensation phenomena
of water occur, and water quality will be gradually degraded.

are always in contact with each other m the cooling tower, the sulfurous acid gas,

dust, earth and sand, etc. in the atmosphere will intrude into the cooling tower,

further degrading the water quality.

Inthecooling water system, the trouble arising from water aremostly caused by
these causes and typical causes include corrosion. adhesion of scales and generation
of slimes.

Standard values of the water quality

a)

First of all, water quality control method is determined due to the results of
analyzing the water quality.

componet, chloride ion,

Asthe water and air

The standard values ofwater quality areshown intable 3-1asanexample.

quality should becontrolled within the standard values.
the blow control method in which all water is replaced periodically or water is
continuously and forcibly replaced as suppress the concentration of water asmuch as
possible and a method in which water processing chemicals are put into the water
because ofthe poor quality ofthemake-up water orsaving thewater..

The control method includes

And water

—66—

‘fable 3-1 Standard wilws of the water quality

*1 Cooling water

Items

(he-pass or
Circulating water

m
Electrical

conduct ivi ty

(25°CKs/~)

M alkalinity 100 or less 50 or less

Total hardness 200 or less 50 or less

Chlorine ion

Sulfuric acid 200 or less

ion

Total iron l.Oor less

(2SC )

(m)

(m)

(m)

(m)

(m)

*2 6.5-8.0

800 or less

200 or less 50 or less

!lkike-lxl

%2 6.5-8.0

200 or less

50 or less

0.3

Chilled inter Tendency

Circulating Make-up COr-

inter

%2 6.5-8.0

500 or less

100 or less 50 or less

100 or less 50 or less

100 or less 50 or less

100 or less 50 or less

1.0 or less 0.3

*2 6.5-8.0 0

200 or less o

ros ion

o

o

0

Scale

0

o

o

0

Sulfur ion

(m)

Au.fmoniuuion

(m)

Silica (mm) 50 or less

—

Free carbonic

acid (m)

(Note 1)

Not detected

1.0 or less

*3 *3

Not detected

0.2 or less

30 or less

Not detected

0.5 or less

50 or less

10 10

Not detected

0.2 or less

30 or less

o

o

o

0

*l: TheStandadvaluesOfcmlingwatf?randmke-uPwakrarethe StarKkdValuesoftk

Jam Refrigemtim/Air Ccnditimcr In&s@ knciatim(JRA 9001-1980).

*2: Themsm* ttle Mvalue0f lilenlake-uP watfris6.oto8.ois thatnopmblein

wculd be ~ted as the #l value will
t.cmverevmifthe rilvaluetemmcmrily
the~watiti.

* 3 :Jam Refr&ratim/Air Cmditicner Ir&stry Associatim clarifies that thwzh they

arenotinchxklt in the standmk beta= the tolemncm at which failures may result
are not definite, free carbonic acid. manganese, residual chlorine, etc. do serve as
corrosive factors.

(Note 2)

FXhitmof thestandad values has astrmgkmring mthefaihmb tocornxim
or scale and if

assumed that corrosion or scale tends to be caused, therefore, these should be

periodically controlled.

(Note 3)

As the range of the quality of water which may become useable if the water is
~ cliff= _ti m b chemicals to be used, it is not givm here. It is

desirable to 92t the amropriate water wlity ccmtrol Mu= M * W- of a

water processing specialist periodically control it.

anYvalue in either item deviates from the standard value, it is

~ while the wati is ciru.dating in Ihe

~ whm carixnic acid gas dismlves into

—67—

b) Typical wat.e- treatment

—

The blow control means the forced replacement of the cooling water in order to
suppress theexcessive concentrating ofthe circulating water (cooling water) inthe
cooling tower and to prevent the changing of pH value and the concentrating of

I

corrusive rotter and scale producting mutter-.

general these are following methods;

Continuous manual blow by make-up water

Automatic blow down by electric conductance

Addition the anticorrosion

Slime control

Seasonal water analysis

—68—

(2) WATER TREATMENT FOR LONG TERM SHUT DOWN

Perform following treatment during long term shut down with no-circulating of

chilled water and cooling water in the chiller.

Please consult the Mail with service representative.

a) Cooling water

(Keep the cooling water in the chiller>

Discharge cooling water from its discharge port on the cooling water outlet.

pour anticorrosion chemicals into the water.

Full up the cooling water in the chiller.

operate the cooling water

Close theisolation valve

Open the

Discharge cooling water from itsdischarge port onthecooling water outlet.

(1)

Remove the scale and/or slime clung in the tubes by brush (nylon) cleaning.

(2)

(If scale and/or slime can not be removed by brush cleaning, perform chemical

cleaning. )

Perform cleaning with water sufficiently.
Pour anticorrosion chemicals into the water, and circulate the water with

anticorrision chemicals for 30 minutes ormore.
Discharge thewater from the discharge port on the cooling water inlet.

Keep toopen the discharge portduring shut down.

D valve on the chiller.

pump until mixed anticorrosion chemicals even.

of inlet and outlet on the cooling water line.

b

Chilled water
Keep to full up. the chilled water in the chiller.

c) In winter

Ifyou have achange ofambient temperature

freeze of chiller.

Please consult with service representatives.

–69–

below O ‘C (32°F) , please protect the

3.4MAINTENANCEFORINVERTER

Whenyou check the insulation test of control circuit, please
the inverter.

(1)

INSULATION TEST FOR INVERTER

Insulation test for inverter itself checks

check the control circuit of inverter.

Check DC 500V for 1 minute by insulation
The resistance isabove 10MQ.

POWER SUPPLY

only power circuit

resistance, tester. -

--------1

--------

----- ----

INSULATION
RESISTER
TESTER

94

1

=

s

T.

INVERTER

I

.

J

----~

11----

v

-----

w

remove all terminals to

as Shown below, never

MOTOR

M

0

FIG.3-6 INSULATION TEST

2) INSPECTION BEFORE OPERATION

(

Please check the following items before power supply.

(1) Check the wiring connection to- the inverter.

(2) Clean in the control panel and inverter panel.

(3) Tighten the screw on the terminal of inverter.

(4) Do not touch between terminals.

–70–

(3) ht4N1—EWWE

a) Seasonal inspection

Check the following items

Note) 1. when you remove

theinverter panel after a few minutes ofturn offthepower supply.

2. When you remove the connector oftheinverter, please hold thehousing ofthe
connector.

Take care theconnect number when you match theconnector.

3. Please change theelectrolytic capacitor every 5years andthecooling fan

every 3 years.

4. Recommend toexhange the parts orboards, ifitwill behappen totrouble

Item

1.General
Ambimt anditi(n

Pwer slpply

2.Main circuit
Transistor &
Dio& rnodde

Ambient t.empemti : 5°C (41”F) - Return the cxniiticm

Relative humidity
Viblation : below O.5 G

Input

Discoloration. Offensive smell

Lmxn?ssofscmv Tightness

When the chiller shut down atend of season.

theinverter, please confirm tolight offthe power lamp on

Inspection Disposition

45T (113T)

: 90%at45°C (113T)

voltage : R&d voltage ? 1O%

within

AdjE3 & vole

&change the ln(xllle

~ificatim

Electrolytic Liq.Iid leak, Transfommtim
capacitor Camcitarm(akve 85% of ratd)

Resistor

Wire Dkxmloraticn of WVered WiK! Exchange the wire

Others Dust

1.Printed wiring

board

Hybrid IC Mculting
Capacitor

Resistor Discoloration, Crack Exchw-lgethew

Connector

I.Cooling fan

Cooling fan

Cooling fin

Discoloration, Crack

RAstanm(within tlO% of rated)

Tear, Short circuit

Looseness of screw Tightness

cmditicn

Transfomnatim Exchange thehcxml

Looseness, Disconnect

Dust
Noise of bearing

——

Dust

IMlangethem

Ilxcimngethem

Cleaning

Viblath Protacticxl

Fixtheamector

Cleaning
Excilangew fan

Cleaning

—71—

$

( 4 )MEASUREMENT LOCATION

Pl~ use larger capacily current transformer, if you meamre

the Currmt.

%iiiiit:sim‘—t

I
I ‘—

Clmp type current meter

INVERTER

Wattmeter

volt meter

Ammeter

Wattmeter

of rectifier” iype

output

3 PHASE
POWER
SUPPLY

Power

Voltage Multiple meter

-me
Power

1

YJ

YJ

FIG. 3-7 MEASUREMENT

315PIIRTSN$PIECTKBI

Plea.& ccnwlt with =ice rqxzmreien+ative

‘arts

,.Chiller

Heat transfer

tubes

(ABS~JIVA)

Hmt transfer

tubes of heat
ex~

(flJZY. LTEX)

——

High temp.

EY==ti

(HT.GENE)

!.Solution

AkJr<

name

Inspection item

Cormsi(n, scale and/or slime
clung in the tube

(=>bY IMdYalrrent test or

.——

CorrQsial, WIe and/or slime

clung in the tube

<hEPedEd bYEh3xiawand N2

after cutting shell)

Dirty inthech&er and flue tube

<Viwalinspection)

Solution analysis

{Solution sampling)

Concentration

P-alkalinity

Inhibitor

Dkxdutim

Dkolutkn volume of in

volume

VOhIITE! of QXEr

Inspection period

Ck-lceei7w3ym

Ifnemsary

Orm ayear Cleaning

1 tilm? per

2000 hr

Adjust the

mtd sdu-ticn
standard

—

b

At#rbent and

Refrigerant
pump

——

--

fllmbstim

Burner stockedby~

controller

Flame &ectnr

%ut off valve
Solenoid valve (h LKirts)
RQgdator
Blmver nmtor
Fan

Body, Impeller, Bearing and coil
<Overhaul}

—

Body <overhaul)

V-belt <12dange) -

(&=-e -)

swby Oune-

lf~

If~

Ifnems+uy

.—— ——.-—

lfn===Y

mle kngth
of time :

over30 ,Oooti

Illrable m
of time :
over12,000hrs

—73–

Parts name

5 J%fety &vi@

Pre+wre mw Stocked lwcmner (spare wlrts)

Inspection item

Inspection period

once m6ry3 yearn

R6.lmrk

HT.GENE

Flow switch

stOCkedbywmer(sE3r’7?LElr’tS>

Enf==im

Manmeter

Air flw switch Sta?dtmu mr(iirerarw Qlceevery3ym

Gas

Temperature Stocked bymvnei-( fipamrarts?’

sensor

Ekctmmnetic

Cmtaclllr
.Auxiliary relay
Time dekw

relay
Control valve
Modltrol motor
Electronic

controller

Inved.er

b.Others

Electrod of

dutim kwel

Sight glass
Diaphmgm valve
Gaskets
Palladium cell
Chamhz- W=
Gasket of water

header

Stocked byclwner <s?areparls)

Stocked byowner(mti>

if~

Once ayar

.~n===y

Refer to 3.4

—74—

WTIIIII4 TIWiIStUOTffi

CONTENTS

Page No.

SilxON 4

4.1

4.2 POWERFAILLRE---------------------------------------------------------------78

4.3 ALARMN

-mouBu? sJ-IooTM

ALARMINDICATION

(1) PIWIZMW
(2) DETAILOF

............

LAMP ---

"-"""""""--""---"""-""--"-"-"""--'-""----------75

-----------------------------------------------76

- ~~ ~ ~... -......................76

AIARMINDICATIONIJM--------------------------------76

( 1) ~~ FA~ ~ .............. ................................. 78

(2) REm ‘n-E ~ .........

(3) mvn ~ ---------

--------------------------------------------78

---------------------------------------------------- 78

THE ~lK 0HRATI0l+--------------------------------------79

(1) WAITIl
(2) MOTOR

(3) G13’E?ATORm.......

LINE ALARM------------------------------------------------------79
w----------------------------------------------------------------79

-- -----------------------------------------------8O

(4) SYSTEMAIARM--------------------------------------------------------------8O

4.4 ALARMTIME ~-------------------------------------------------------------81

( 1) ~~ ~T~ ....................................................... 81

—7 5—

401Whi N)CATINLAW

—

Chiller stops safety, when the chiller has atrouble. And the same time, alarm buzzer
rings and alarm indication lamp lights.

(l) PROCEDUREWHEN CHILLER HAS TROUBLE

(1)Stop the alarm buzzer by"BUZZER STOP" key ontheoperation board.

(2)Confirm thetrouble item by alarm item indicator ontheoperation board.

(3)Repair the trouble item.

(4) Push the "STOP" key onthe operation board after repair.

Alarm indication lamp turns off, and “STOP” indication lamp flickers.

(5)Operate the chiller. ( Refer to 2.5)

(2) DETAILOF ALARM INDICATION LAMP

a) Alarm item indicator

WATERALARM MOTOR ALARM

O CH

0 CHW FLOWRATE
O COWTEMP.

W TEMP. 0 REF.PUMP

O #1 ABS.PUMP

0 #2 ABS.PUMP O TENP/CONCENTRATION

0 CO W FLOWRATE

b) Detail

1. Water alarm

Alarm indicatkn lamp

U-IWTEMP.

CI+WFWWRAIE

GENERATORALARM

SYSTEMALARM(INTERLOCK)

0 PRESSURE 0 CH/HTWPUMP

o co w PUMP

Trouble

1) Cbilkxl w atlet tempera- is below 2.5°C (36.5W)

2 ) Chilled water outlet temperature sensor (DT1) is

broken.

(hilled wati or hot water flow rate demnses

below

50%

-7 6–

2. Motm alarm

Alarm indication lanw

N3?. HJMP

#1 AILS.FuMP

3. Generator akmn

Alarm indicatim lam

TIIblP/CDN@TRATlOJ

Trouble

Anwmze of reft%mmt m is *e ratd value.

AmKrage CrFNO.l~t~ iS tie mted vati.

Trouble

l%-esme ufhightenxemtm gmmdor is-e
atnx4&re presxme.

l)T~ti of high temperature gmemtur is abwe

165°C (329”F) m cooling mcde and 130”C (266”F) in

heating mode.

Z) High tempemtum gawratcr titurw ~ (IYT3)

is broken.

3 ) Cu-lcd.mticrl of ancmtrat.d duticn is atwe 65%

for 10 minutes.

4. &@3n alarm (Intdodc)

Alarm indimtim lamp

(3-IWFUMP

mwHJMP

Trouble

Interlock of chilkd water ~ discmnds.

lnterkxk of cmling water mm dkumneck.

–77–

412POWERFAILURE

(1)

POWER FAILURE MASSAGE

This message
The message

is indicated when it is happen to power failure above 100 millisecond.

on the digital display flickers.

lIHEEId(~-~rr) ..’

Chiller stops immediately, when it is happen topower failure.
Chiller has no dilution cycle operation.
after return the power supply.

( 2) RESET THE MESSAGE

When YOU push the "OPERATION" key. the power failure message isreset

( 3) SERVICE CALL

(Cooling

(1) Return

Please

operation)

the power within 1 hour.

call to Service representative

‘Please operate dilution cycle operation

after chiller operation.

(2) Power

Please

(During purge pump operation)

Please close the No.1 purge valve (V1)

(1)

failure.

Please turn off the purge pump operation

(2)

Measure the pressure

(3)

When the power returns,

(4)

representative.

failure continue over 1 hour.

call to service representative

in the shell.

please start the purging and call to service

before chiller operation.

immediately, when it is happen to power

switch in the control panel.

–78–

4.3 ALARM INTHE COOLING OPERATION

(l) WATER

(1)

LINE ALARM

Discharge

pressure ofchilled water orcooling water pump normal?

Check the strainer and airvent ofthepipe line.

(2)

Is gas control valve mode select switch inthe control panel "AUTO" position?

Turn to“AUTO” position.

(3)

Ischilledwater setting point too lcw ?

Confirm thesetting point.

And ifit istoo low, please adjust thebest

setting point.

(4)

Iscooling water setting to low?

Confirm thesetting point.

And ifit istoo low. plese adjust thebest

setting point.

Please

operate the chiller again after checking above items.

If the chiller has an alarm the same as previous alarm, please call to service

representative with below data.

Chilled water inlet and outlet temperatures
cooling water inlet and outlet temperatures
High ttemperature generator temperature
High temperature generator pressure

(2) MOTOR ALARM

Confirm tostick out thereset button ofthe
representative.

over current relay, please call service

‘f-RESET BUTTON

FIG. 4-1

–79–

Open all valves of cooling water line.

(3)

(4)

(6)Otherwise, there dirty ofheat transfer tube.
Please operate the chiller again after checking above items.

If the chiller has an alarm the same as previous alarm, please call to service

representatives with below data.

Isdischage

Check thestrainer and airvent ofthepipe line.

steam control valve mode select switch in the control panel "AUTO" position ?

Confirm the setting point.
setting point. “

Chilled water inlet and outlet temperature
Cooling water inlet and outlet temperature
High temperature generator temperature
High temperature generator pressure

pressure ofcooling water pump normal?

And ifit istoo low, please adjust the best

water pumps operate ?

and cooling water pumps.

—8 O–

414#lJRMThfW4RT

(l)(XX1-ffi (J%IIATCN

a) “~ W lEMP”

STEAM
CONTROL
VALVE

al

ABS PUMP

#2

ABS PUMP

REF PUMP

CHILLED

WATER PUMP

COOLING
WATER PUMP

ON

OF I

ON

OF I

ON

OFF

ON

OFF

ON

OFF

OF

ON

. 1 MI N._l -

[

ALARM SIGNAL

I

I

I

I
I
I

I

i

I

I

I
I

I

;
I

ST’OP

I

I
I
I
I

I

I

I
I
I

I
I

I
I
I

I

I

I

I

I
I
1

I

I

I
I

I

I
I
I
I
I

I

I

TI

I

I
I

I
I
I

r
I
I
I
I

I

I

Lf MIN. I
I

7-= m

‘ T2

—81–

b) “FRESURE”,

STEAM
CONTROL
VALVE

“lEMP/~TKHJ”

-—

ON

OF

Ill ABS

#2 ABS

REF PUMP

CHILLED
WATER PUMP

COOLING

WATER PUMP

PUMP

PUMP

ON

OF I

ON

OFF

ON

OFF

ON

OFF

ON

OF

I

I

I
I

I

I

,
I
I

I
I

I
I
I

I

I

I

1

I

I
I

‘1

I

I
1
I

‘-l MIN.’

I

&

1

ALARM SIGNAL

I
I i

I

I

i
I
I
I
I

I
I

1
I
I
I
I

I

I

I

I
I

I

I

I
I
I

I

I

I
I

I

I

I

,.

1

I

I

I
I
I

I

I

‘ 1 MIN.J

1 T.f I

1

T2

u

STOP

I

I
I

I
I
I
I

1

1

I
1

1

I
I
I
I

1

I

—82—

FIG. 4-3

STEAM
CONTROL
VALVE

al

ABs PUMP

#2

ABS PUMP

REF PUMP

CHILLED

WATER PUMP

COOLING

WATER PUMP

OF I

ON

OFF

ON

OFF

ON

OF

ON

OF I

ON

OF I

ON

I

I
I
I

I

I

I

:’

I

I

I

I

I

I

1’

[

I

I

I

I

I

I

I
I
I

I

I I
l.l MIN.

I

I

‘ALARM SIGtJAL

I
I

I
i

I

I

1
I
I

I

I

I

I

I

I
,

I

I

I

I

I

I

I
I
I

I

I

TI _I

I

1

I

I

;.1 MIN. d

1

1
i

I

J

●

I

I

I

I
I
i

I

I

I
I

I

.

S T’OP

I

I
!

I
I
[

I

I

I

;

I

I

I

I

1

T2

—83—

FIG. 4-4

d) “#l AIKPU?vlP”,”##2ABSFUMP”

STEAM
CONTROL
VALVE

81

ABS PUMP

#2

ABS PUMP

REF PUMP

LLED

ER PUMP

COOL I NG

WATER PUMP

ON

1

OFF

I

I

I

ON

I

I

OFF

1“1

ON

-1’ !’”’ “’ “’

OFF

ON

‘i

OFF

I

I
I

I
I

I

I

ON

OFF-

ON -

OFF-

I

1
I

I
I

I
I
I
I
I I

I

L1 MIN.~

I I T1
1

I

I

I

I
I
I
I

I

I

I

I

MIN. -l

l-l

I

9

I

I

I

i
I

I

I

STOP

t

ALARM SIGNAL

FIG. 4-5

—84—

e) “(3-IW113M.P.”,

“(1-Iwmw RAm”, mwm”

STEAM
CONTROL
VALVE

$11 ABS PUMP

#2 ABS PUMP

REF PUMP

CHILLED
WATER PUMP

COOLING
WATER PUMP

ON

OFF- —

ON

OFF- —

ON

OFF- –

ON

OF F-–

ON

OF F-–

ON

OF F-–

I

I
I

I

I

I

1

I

I
t
I

I
I
I
1“

MIN. I

1

I_

I
I_

1

[

ALARM SIGNAL

I
I

I
I
I

I

I

I

I

I

I

I
I

I
1

I
[
I

I
I
I
I
I
I

1

I
I
I
I
I

I
I
I

TI I

1

STOP

—R !i—

FIG. 4-6