Carrier 16LJ-A Series User manual

OPERATION MANUAL
Absorption Chiller
16LJ-A Series
Original language
814-6-0510-258-00-0

NOTES TO USERS
Thank you for purchasing Carrier Absorption Chiller.
Before operating the Chiller, please read this manual thoroughly.
Please utilize the Chiller to its optimum performance by following recommended daily maintenance and handling, and
periodic service.
If you need any information about maintenance contract or any other inquiries, please contact Carrier service agent.
DECLARATION OF CONFORMITY < for CE marking model >
This product is marked " CE " as it satisfied EEC Directive No. 2006/42/EC, 2004/108/EC, 97/23/EC, 90/396/EEC and
conforms with following standards.
This declaration will become void in case of misusage and/or from non observance though partial of Manufacturer's
installation and/or operating instructions.
Class and group description (EN 55011, clause 5.1)
This is group 1, class A product according to EN 55011. This means that this product does not generate and/or use
intentionally radio-frequency energy, in the form of electromagnetic radiation, inductive and/or capacitive coupling, for the
treatment of material or inspection / analysis purpose and that it is suitable for use in all establishments other than domestic
and those directly connected to a low voltage power supply network which supplies buildings used for domestic purposes.
Statement for Class A Equipment (EN 55011, clause 5.3)
This is a class A product. There may be potential difficulties in ensuring electromagnetic compatibility in environments other
than industrial, due to conducted as well as radiated disturbances.
Cable Specification and Equipment Orientation (EN 55011, clause 7.5.2 and EN 61000-6-2)
Refer to the "Field wiring" section of the Installation manual.
CE Marking and Apparatus Identification (2006/42/EC, clause 16.2 and 2004/108/EC, clause 8.1)
There are printed on the nameplate of the chiller control panel.
Name and Address of Manufacture
Refer to the document of Declaration of conformity.
Statement for Equipment for witch Compliance with the Protection Requirements is not ensured in Residential Areas
(EMC Directive 2004/108/EC, clause 9.4)
- This product must not be used in residential areas.
- This product may cause interference if used in residential areas. Such use must be avoided unless the user takes
special measures to reduce electromagnetic emissions to prevent interference to the reception of radio and television
broadcasts.
UL CERTIFICATION < for UL marking model >
This product has met the necessary design and construction qualifications for certification per Underwriters’
Laboratories. Each machine carries a UL listing and is labeled accordingly.
PRODUCT PROFILE
(1) Excellent for peak shaving during high electrical demand periods.
(2) Designed to provide chilled water from waste heat sources, generated from industrial processes and
cogeneration systems.
(3) Allows diversification of critical cooling requirements. Critical cooling loads are met with minimal electrical power
input with a hot water-fired chiller.
(4) Allows for smaller generator set installation be utilized since the electrical load associated with an absorption
chiller is minimal when compared to an electric chiller.
(5) Ozone safe, CFC free. Cooling requirements are met without chlorine based refrigerants.
(6) Reduces effectors to global warming. Minimizes global impact by greatly reducing electricity consumption and
eliminating the use of greenhouse gases.
(7) Environment: Molybdate solution inhibitor is used with no impact on environment.
(8) Low noise and vibration. The absorption chiller dose not utilize a large motor-compressor, and this leads to quiet,
trouble-free operation.
(9) Small footprint saves facility space.
USE OF PRODUCT
Absorption Chiller is air conditioning equipment achieving comfortable space, energy saving, and economic efficiency.
It has been used in office buildings, hotels, department stores, hospitals, schools, convention centers, government
building, etc.
Note: The contents of this manual are subject to change without notice.

＊＊＊＊＊＊ Absorption Chiller Operation Manual ＊＊＊＊＊＊
Table of Contents
1. SAFETY PRECAUTIONS -------------------------------------------------------------------------------------- 1-1
2. OPERATING PRECAUTIONS -------------------------------------------------------------------------------- 2-1
2-1. PRECAUTIONS WITHIN 1 HOUR AFTER THE CHILLER SHUTDOWN ----------------- 2-2
2-2. PRECAUTIONS AFTER THE CHILLER STOP -------------------------------------------------- 2-2
2-3. CONTROL PROCEDURES FOR AUXILIARY EQUIPMENTS ------------------------------- 2-3
2-4. ACTION IN CASE OF THE POWER FAILURE -------------------------------------------------- 2-5
2-5. NOISE DATA ---------------------------------------------------------------------------------------------- 2-5
3. ILLUSTRATION
3-1. DETAIL OF TYPICAL CHILLER/HEATER -------------------------------------------------------- 3-1
3-2. TYPICAL CONTROL PANEL ------------------------------------------------------------------------- 3-3
3-3. FLOWCHART OF CHILLER AND FUNCTION OF EACH SECTION ---------------------- 3-4
4. OPERATING INSTRUCTIONS
4-1. TURN ON THE MAIN CIRCUIT BREAKER ------------------------------------------------------- 4-1
4-2. DESCRIPTION OF KEYS AND THEIR FUNCTIONS ------------------------------------------ 4-2
4-3. OPERATION ---------------------------------------------------------------------------------------------- 4-3
4-4. HOW TO CHANGE THE INDICATION ON DATA DISPLAY ---------------------------------- 4-6
4-5. HOW TO CHANGE THE INDICATION AND THE SETTING POINT ----------------------- 4-8
4-6. MAINTENANCE MESSAGE -------------------------------------------------------------------------- 4-9
4-7. ALARM INDICATIONS AND ACTIONS TO BE TAKEN ---------------------------------------- 4-10
5. MAINTENANCE
5-1. DAILY INSPECTION ------------------------------------------------------------------------------------ 5-1
5-2. PERIODIC MAINTENANCE --------------------------------------------------------------------------- 5-1
5-3. WATER TREATMENT ----------------------------------------------------------------------------------- 5-3
5-4. RECOMMENDED SCHEDULE FOR MAINTENANCE AND REPLACEMENT OF
MAIN COMPONENTS ---------------------------------------------------------------------------------- 5-7
6. MAINTENANCE CONTRACT
6-1. ANNUAL MAINTENANCE CONTRACT ----------------------------------------------------------- 6-1
6-2. INSPECTION REPORT -------------------------------------------------------------------------------- 6-1
6-3. WARRANTY ---------------------------------------------------------------------------------------------- 6-1

1-1
1. SAFETY PRECAUTIONS
To avoid harm to the operator and others, and to protect own asset, be sure to follow the instructions and
requirements on safety described in this manual.
We explain about a harm or damage if a chiller is used with mistaken usage ignoring these precautions.
Failure to observe this instruction must result in serious injury or death.
Failure to observe this instruction may cause serious injury or death.
Failure to observe this instruction may result in impediment or damage
to the product or the property.
Symbol conventions
Refer to advice that denotes caution.
Refer to something that is prohibited.
Refer to advice that must be observed.
STOP OPERATION IN CASE OF FIRE,
EARTHQUAKE OR POSSIBLE
THUNDERBOLT
Stop the operation in case of a fire,
earthquake or when there is likely to
be a thunderbolt, to prevent a fire or
electric shock.
ONLY AUTHORIZED PERSONNEL SHOULD
OVERHAUL THE CHILLER
Only those who are authorized
should overhaul the chiller.
Incomplete service could result in
electric shock or a fire.
DANGER
WARNING
CAUTION
DANGER
Must be
observed
Do not
disassemble

1-2
TURN OFF THE BREAKER BEFORE
CLEANING AND CHECKING
Always turn off the breaker before
cleaning and checking the cooling
tower fan, water pumps, or others
linking to the chiller, to provide
protection from electric shock or
possible injury by the rotating part.
DO NOT TOUCH THE PARTS INSIDE THE
CONTROL PANEL
DO NOT TOUCH THE CONTROL PANEL
SWITCH WITH WET HANDS
Do not touch the parts inside the
control panel to avoid electric shock.
Do not touch the switch inside the
control panel with wet hand to avoid
electric shock.
KEEP FLAMMABLES AWAY FROM THE
CHILLER
Do not place any flammables
(gasoline, thinner, etc.) close to the
chiller, flue, chimney and oil tank to
prevent a fire.
DO NOT TOUCH ANY ROTATING PART
Keep away your fingers and/or
clothes from any rotating part of fan
or pump to avoid possible injury.
USE THE CORRECT POWER SUPPLY
The rating indicated on the name
plate of the chiller. Use of the power
other than specified here may cause
a fire or electric shock.
CALL SPECIALISTS FOR SERVICE OR
MAINTENANCE
Call specialists for service or
maintenance. Wrong service
/maintenance may cause electric
shock, a fire or burn.
NEVER CHANGE THE SET VALUE
Never change the set value of the
safety and/or protective devices.
Wrong setting may damage the chiller
or cause a fire.
ONLY AUTHORIZED PERSONNEL SHOULD
REMOVE OR REPAIR THE CHILLER
Any relocation or moving of the
chiller should be done by authorized
personnel only. Incomplete work
could result in a vacuum break, a
solution leak, electric shock or a fire.
ONLY AUTHORIZED PERSONNEL SHOULD
DISPOSE OF THE CHILLER
To dispose of the chiller, contact the
local specialist. Any defective disposal
may cause metal corrosion or skin
disease by absorbent leak.
ONLY AUTHORIZED PERSONNEL SHOULD
PERFORM THE WIRING
Only those who are authorized
should perform the wiring.
Incomplete work could result in a fire.
DO NOT CUT THE POWER SUPLLY WHILE
THE CHILLER IS STOPPING
Chiller is watching the vacuum level
while it is stopping.
USE PARTS THAT ARE SPECIFIED
Use parts that are specified, or it may
cause a malfunction.
WARNING
Must be
observed Do not
touch
Prohibited
Prohibited Must be
observed
Must be
observed
Prohibited Prohibited
Prohibited
Prohibited Must be
observed
Must be
observed

1-3
DO NOT OPERATE COOLING WATER PUMP
WITHIN 1 HOUR AFTER CHILLER STOPS
COMPLETELY
There is a possibility of chilled water
freezing by the remaining cooling
capacity.
WIRE EACH INTERLOCK
Be sure to wire the interlock for
chilled water pump, cooling water
pump and ventilation fun.
Prohibited Must be
observed

1-4
DO NOT PLACE HEAVY OBJECTS ON THE
CHILLER OR THE CONTROL PANEL
Do not place heavy objects on the
chiller or the control panel to avoid
possible injury caused by falling.
DO NOT CLIMB UP THE CHILLER
Do not climb up the chiller to avoid
nasty fall.
AUTHORIZED PERSONNEL ONLY
A notice, “For Authorized Personnel
Only” must be affixed to the chiller to
keep away unauthorized personnel
from touching it. If this is anticipated,
enclose the chiller with a protective
fence. Misuse of the chiller may
cause injury.
DO NOT POUR WATER OVER THE
CHILLER OR THE CONTROL PANEL
Do not pour water over the chiller or
the control panel to avoid electric
shock.
OBSERVE THE SPECIFIED PRESSURE OF
WATER
The specified pressure of chilled
water, hot water and cooling water
must strictly be observed. Incorrect
pressure may cause spout or leak
which may cause a short circuit or
burn.
DO NOT TOUCH THE HIGH TEMPERATURE
AREAS
Do not touch the high temperature
areas. These areas are indicated by
caution label. Please avoid touching
on such areas to prevent burn.
STOP THE PURGE PUMP TO REPLACE OIL
Stop the purge pump when replacing
oil to avoid possible injury by oil
scattering.
MAINTAIN THE QUALITY OF CHILLED
WATER, HOT WATER, COOLING WATER,
MAKE UP WATER AND BOILER WATER
There is a possibility of tube
corrosion due to water pollution or
poor water quality. Contact a water
treatment company.
ACTION AFTER THE POWER FAIL
RECOVERY
The action is different with outage
failure time and cooling mode. Check
details by this manual.
CAUTION
Prohibited Prohibited
Prohibited Prohibited
Must be
observed Prohibited
Must be
observed Caution
Caution

2-1
2. OPERAING PRECAUTIONS
(1) Stop timing of auxiliary equipments
During the dilution cycle operation of the Chiller, the chilled water pump (both the primary side and
the secondary side) and air handling unit must be operated for the necessary time. The Chiller has a
little cooling capacity even if it is in the dilution cycle operation. Do not stop the air handling unit
before the necessary time to prevent possible chilled water freezing.
Connect the operation signal wires from the chiller to the chilled water pump and cooling water
pump. Each pump must be automatically operated by the chiller signal.
(2) Freeze protection of chilled water, hot water and cooling water
In winter, ensure that the chilled and cooling water in the pipes does not freeze during chiller
shutdown.
There is a possibility of chilled water freezing by a remaining cooling capacity within 1 hour after the
Chiller stops completely.
(3) Chilled water flow through the chiller
Don’t flow chilled water over 40% of the rated value at the chiller starting. Otherwise, chiller will not
start because it cannot check the flow switch contact switching from off to on.
(4) Temperature of cooling water during operation
Keep the cooling water entering temperature above 21oC / 69.8oF and above 24oC / 75.2oF for a
process setting machine.
During the start-up process however, a lower temperature is allowable until the operating condition
becomes normal.
If the chiller operates during intermediate season or in winter, provide an automatic three-way
control valve to the bypass piping of cooling tower.
When the chiller operates during intermediate season or in winter, there is a possibility of safety stop
with alarm in the case that cooling water inlet temperature does not reach the rated condition within
30 min. after starting chiller operation.
(5) Power supply during the shutdown period
Don’t cut the power supply during the shutdown period.
Refer to “2-2.Precautions after the chiller shutdown”.
(6) Control procedures for auxiliary equipments
Refer to “2-3 Control procedures for auxiliary equipments”.
(7) Action after the power fail recovery
Refer to “2-4 Action in case of the power failure”.
(8) Periodic check of safety devices
Safety devices need periodic check for safety use. We recommend performing these by our service
engineer. The contents of periodic check are indicated in section 5.
(9) Monitoring of the operating condition
In case the chilled water outlet temperature is not lowered to the set value for a while, the heat input
may not be sufficient or the chilled water may be overloaded. In order to prevent any damage or
failure to the Chiller in such cases, make sure to check the operating conditions and the state of
Chiller.

2-2
2-1. PRECAUTIONS WITHIN 1 HOUR AFTER THE CHILLER STOP
(1) Never operate the cooling water pump within 1 hour after the chiller stop. Otherwise, there is a
possibility of chilled water freezing in the evaporator tube. Please operate the cooling water pump
automatically by a signal from the chiller.
(2) If you operate the cooling water pump within 1 hour after the chiller stop, the chilled water pump will
operate automatically to prevent chilled water freezing. Caution labels are put on the control pane
of chiller and field supply panel.
(3) When the chiller is used for cooling and you want to operate the cooling water pump within 1 hour
after the chiller shutdown for preventing cooling water freezing, be sure to operate the chilled water
pump at the same time for preventing chilled water freezing.
2-2. PRECAUTIONS AFTER THE CHILLER SHUTDOWN
Don’t cut the power supply during the chiller is stopping.
-The chiller is watching vacuum level all the time.
-The chiller has a battery to maintain operating time and date during power failure. If power failure
continues for a long time, there is a possibility that the battery runs down.
CAUTION
• Do not run the cooling water pump manually
within 1 hour after complete stop of the chiller.
• Do not run the cooling water pump manually
during the chiller operation. (including dilution
sequence)
Only pump operation interlocked by the chiller
is permitted.
• Please make sure the above to prevent serious
problem i.e. chiller water freezing and the tube
burst.
CAUTION
In case the cooling water pump is operated
manually within 1 hour after the complete stop of
the chiller, the chilled water pump also runs
automatically for chiller protection purpose.

2-3
2-3. CONTROL PROCEDURES FOR AUXILIARY EQUIPMENTS
(1) On-off control of the auxiliary equipments such as chilled water pump, cooling water pump, cooling
tower fan and hot water pump shall be linked to the absorption chiller operation for the safety of the
absorption chiller.
(2) It is necessary to operate the auxiliary equipments following the interlocking signal from the chiller.
Those equipments and the chiller shall be wired according to the manufacture’s specified wiring
diagram. The chiller includes “chilled water pump on-off signal” and “cooling water pump on-off
signal” and “hot water pump on-off signal” as standard equipment system.
(3) The chiller also includes “cooling tower fan on-off signal” as standard.
Operation signal ON
OFF
Absorption chiller
Chiller stop 1 hour after chiller stop
Chiller RUN
STOP
Cooling tower fan
on-off signal ON
OFF
Cooling water
flow switch (option) ON
OFF
Cooling water
pump on-off
signal
ON
OFF
Hot water pump
on-off signal ON
OFF
Chilled water
pump on-off
signal
ON
OFF
Chilled water
flow switch ON
OFF
Cooling tower fan RUN
STOP
Cooling water
pump RUN
STOP
Chilled water
pump RUN
STOP
Hot water pump RUN
STOP
AHU or FCU ON
OFF
1
2
2
3
4
5
5
6
6
7
8
9
10
12
13
13
14
14
15
16
16
17
20
21
11 19
Auxiliary equipments

2-4
Detailed procedure
(1) At the start of the chiller “chilled water pump on-off signal” and “hot water pump on-off signal”
become ON.
(2) Chilled water pump starts in conjunction with the above signal.
(3) This makes the answerback signal return to the chiller.
(4) The chiller control system confirms if the chilled water flow rate is enough.
(5) By clearing the step 3 and 4, both the “cooling water pump on-off signal” and “cooling tower on-off
signal” become ON.
(6) Cooling water pump and cooling tower fan operate.
(7) Interlock signal of the cooling water pump returns to the chiller.
(8) The chiller control system confirms if the cooling water flow rate is enough.
(9) By clearing the step 7 and 8, the chiller operates normally.
(10) Operate the air handling units.
(11) If the above process from 1 to 8 takes more than 10 minutes, interlock alarm comes ON and the
chiller stops operation.
(12) When the chiller receives a stop signal during operation, it starts dilution cycle.
(13) In 1 to 5 minutes after starting the dilution cycle, “cooling water pump on-off signal” and “cooling
tower on-off signal” become OFF.
(14) Cooling water pump and cooling tower fan shall stop.
(15) In one minute the signal of “chilled water pump on-off signal” become OFF but it keeps operating
status with the alarm J-29 “cooling water pump operation malfunction” if cooling water pump does
not stop.
(16) Chilled water pump and Hot water pump shall stop.
(17) Stop the air handling units after completing the step 16.
(18) In 4 to 9 minutes after the step 16, the chiller completes the dilution cycle and stops operation
entirely.
(19) Period of the dilution cycle is 6 minutes at shortest and 15 minutes at longest in cooling mode.
(20) If the ON signal of “cooling water pump on-off signal” comes to the chiller during the period
between the stopping of chilled water pump and the entire shutdown of the chiller or within one
hour after the entire shutdown of the chiller, “chilled water pump on-off signal” becomes ON and
chilled water pump is forced to operate to prevent the chilled water freezing. In this case the alarm
J-29 “cooling water pump operation malfunction” occurs simultaneously.
(21) After one hour of the entire shutdown of the chiller, “chilled water pump on-off signal” or alarm
signals shall not be output even if the ON signal of “cooling water pump interlock signal” comes to
the chiller.
Note
(1) Air handling units shall be stopped after confirming stopping of the chilled water circulation.
(2) Cooling water circulation shall be completely stopped whenever the chilled water stops its
circulation.
(3) Confirmation of the cooling water flow rate is possible with an optional specification of a cooling
water flow switch. (step 8)
(4) The “cooling tower fan on-off signal” should be controlled with cooling water temperature therefore
interlock between the fan and the chiller is not necessary.
(5) Never operate the cooling water pump within one hour after the entire shutdown of the chiller.
Otherwise, the chilled water pump is forced to operate to prevent the chilled water freezing.

2-5
2-4. ACTION IN CASE OF THE POWER FAILURE
(1) Flowchart
(2) Immediate action
When a power failure occurs, the Chiller stops completely without dilution cycle operation. Special
attention should be paid to the following.
Operating condition at power failure Action
During cooling operation and it took 1 hour or
more to power return. Immediately contact Carrier service agent. Do not restart operation.
“A-05” appears on the display.
During cooling operation and it took less than
an hour to power return. The chiller starts dilution operation automatically if power returns within 1 hour.
After that, restart operation.
During purging operation. Immediately close the purge valve completely
and turn off the purge pump switch on the
control panel. After power returns, restart
purging, and contact Carrier service agent.
2-5. NOISE DATA
Model : 16LJ-A 11 12 13 14 21 22 23 24 31 32 41 42
Noise [dB(A)] 81.5 81.5 81.5 81.5 78.0 78.0 81.7 81.7 78.0 78.0 79.0 79.0
Model : 16LJ-A 51 52 53 61 62 63 71 72 73 81 82
Noise [dB(A)] 81.0 81.0 81.0 81.0 81.0 81.0 81.0 81.0 81.0 81.0 81.0
The noise level may vary depending on ambient conditions and specifications.
These value established on the actual measurements or the basis of measurements taken for
similar models.
A power failure occurs.
The Chiller completely stops.
Power returns. Power failure indication “H-10”
appears on the data display.
Press “Run” key.
Automatic dilution operation
(If power returns within 1 hour) “H-10” indication on the data
display disappears.
Operation restarts.

3-1
3. ILLUSTRATION
3-1. DETAIL OF TYPICAL CHILLER
WATER HEADER SIDE
CONTROL PANEL SIDE
Note: The positions or quantity of parts differ according to the model and options.
Chilled water flow switch
Chilled water outlet
Control panel
Purge unit
Rupture disk
Cooling water inlet
Chilled water inlet
Heat exchanger

3-2
WATER HEADER SIDE (OPPOSITE)
EVAPORATOR SIDE
Note: The positions or quantity of parts differ according to the model and options.
Purge pump
Generator
Condenser
Hot water outlet
Evaporator
Absorber
Refrigerant pump Absorbent pump No.1
Hot water inlet
Cooling water outlet
Refrigerant blow
valve
Absorbent pump No.2

3-3
3-2. TYPICAL CONTROL PANEL
3-2-1 UL type
3-2-2 CE type
Note: The positions or quantity of parts differ according to the model and options.
!! CAUTION !!
Do not push the emergency stop button except in emergency.
Otherwise the chiller/heater may be damaged.
Fan, Filter
Terminal block
Terminal block
Terminal block for
power supply
Ground terminal
Fan, Filter
Terminal block
Terminal block
Terminal block for
power supply
Ground terminal
Purge indication lamp
Purge pump on-off switch
Operation board
Operating handle
Main circuit breaker
Operation board
Purge indication lamp Purge pump on-off switch
Emergency stop button

3-4
3-3. FLOWCHART OF CHILLER AND FUNCTION OF EACH SECTION
FLOW DIAGRAM
a) EVAPORATOR
Refrigerant is dispersed on the heat transfer tubes of evaporator. Chilled water through the tubes is
cooled by the latent heat of vaporized refrigerant.
b) ABSORBER
Concentrated solution is dispersed on the heat transfer tubes of absorber. The refrigerant vapor from
evaporator is absorbed on the tubes by the concentrated solution. Cooling water through the tubes is
heated by absorption heat.
c) HEAT EXCHANGER
Diluted solution, after leaving the absorber section, passes through the heat exchanger where it is
heated by the concentrated solution. The concentrated solutions are cooled by the diluted solution.
This cooling process of the concentrated solution allows for greater absorbing power due to its lower
temperature.
d) GENERATOR
The diluted solution from the heat exchangers is heated in the generator. It releases refrigerant vapor
and concentrated solution by the condensation.
e) CONDENSER
The refrigerant vapor from the generator is condensed on the heat transfer tubes of condenser.
Cooling water from the absorber is heated by condensation heat.
f) PURGE UNIT
Gather the non-condensable gas within the Chiller and store it in the purge tank.
Rupture disk DT1
6
DT1
5
Condenser
Generator
Cooling water
Inlet
69
PR P
C
H
Inlet
Chilled water Cooling water
Outlet Outlet
DT7
DT
5
69C
HDT1
DT
6
12
DT
DT
3
DT2
DT1
0
S
V
6
11
DT
S
V4
D2
D1
S
V
3
V1
S
V1
V2
V
3
Purge unit
Purge tank
Evaporator Absorber
Refrigerant pump
Absorbent pump No.1
Absorbent pump No.2
Heat exchanger
Refrigerant blow valve
Purge
pump
B valve
Driving hot water
Hot water
control valve

3-5
The List of sensors
The quantity of sensors differs according to the model and options.
SYMBOL NAME
DT1
Chilled water outlet temperature
DT2
Cooling water outlet temperature
DT3
Generator temperature
DT5
Condenser temperature
DT6
Chilled water inlet temperature
DT7
Cooling water inlet temperature
DT10
Diluted solution temperature at Absorber outlet
DT11
Refrigerant temperature at Evaporator
DT12
Cooling water mid temperature
DT15
Driving hot water inlet temperature
DT16
Driving hot water outlet temperature
69CH
Chilled water flow switch
PCH
Palladium cell heater
69PR
Purge tank pressure

4. OPERATING INSTRUCTIONS
4-1. TURN ON THE MAIN CIRCUIT BREAKER
Self-diagnostic function starts when the breaker inside the control panel of the Chiller is turned on.
After completing the self-diagnosis, the data display on the operation board shows the following.
(1) Data display (7 segment LED) and all LEDs light up.
(2) The data display shows a version number of the microprocessor
when there is noabnormality. If there was a power failure,
H-10 is displayed with the restration of power.

NOTE : The version number differs according to
the chiller
(3) The data display shows the generator temperature.
 (120.4)
If the self-diagnostic function detects any failure, it will be shown the alarm code on the
data display. In this case, please contact the service agent accordingly.
4-1

4-2. DESCRIPTION OF KEYS AND THEIR FUNCTIONS
6
111
212
713
4
5
3
1. Operation indication lamp :Operation indication lamps light while the chiller,
pumps, etc. operate.
2. Stop indication lamp :Stop indication lamps light while the chiller,
pumps, etc. stop.
3. Alarm indication lamp :Alarm indication lamps light up when an abnormality occurred.
4. Remote/local select key :It is used to select remote operation or local operation.
5. Run/Stop select key :It is used to operate or stop the chiller.
The stop key is also used to reset the alarm.
6. Data display(7 segment LED) :It shows temperature, set value, etc..
7. Stand by indication lamp :It lights up by pressing the run key and goes out when
the chiller starts operation.
8. Dilution indication lamp :It lights during a dilution operation.
9. Safety circuit indication lamp :It lights up when the control circuit is energized.
10
.
Power indication lamp :It light up when the power is supplied to the control panel
and the main breaker in the panel is turned on.
11
.
Data select key :These are used to select the display data
and to change set value.
12
.
Back select key :It is used to return back the display data to the generator
temperature.
13
.
Alarm buzzer stop key :It is used to stop the alarm buzzer.
8
9
10
4-2

4-3. OPERATION
4-3-1. Pre-operation check
Check the following items before starting operation.
(1) Check of the setting point of the chilled water outlet temperature
Make sure that the chilled water outlet temperature is set as specified.
As for the indication of set value, please refer to Section 4-5.
(2) Check of the hot water line
a) Make a daily inspection.(Refer to Section 5.)
b) Check that the valve(s) is open.
NOTE : The chilled water pump and the cooling water pump
should be operated by on-off signal from the chiller.
If the chiller starts, these equipments also will start automatically.
4-3