Carrier-Sanyo 16NK User manual

16NK
Double-Effect Steam-Fired
Absorption Chillers
Nominal cooling capacity 345-4652 kW
50 Hz
Operation and maintenance instructions
GB/T-19001-2000 to ISO9001/2000

2
NOTES TO USERS
Thank you for purchasing a Carrier/Sanyo absorption chiller.
Read this manual carefully before operating the unit. It contains instructions for the operation and maintenance of the chiller.
Please utilize the chiller to its optimum performance by carrying out the recommended daily maintenance and handling
instructions as well as the periodic service.
If you need any information about maintenance contracts or have any other enquiries, please contact your Carrier service agent.

3
The cover photograph is for illustrative purposes only, and are not contractually binding.
Contents
NOTES TO USERS........................................................................................................................................................................... 2
1 - PRECAUTIONS .......................................................................................................................................................................... 4
1.1 - Safety precautions....................................................................................................................................................................... 4
1.2 - High-temperature - high-voltage caution....................................................................................................................................8
1.3 - Environmental requirements.......................................................................................................................................................8
1.4 - Water treatment........................................................................................................................................................................... 8
2 - MACHINE ILLUSTRATIONS .................................................................................................................................................. 8
2.1 - Typical chiller views - all sides...................................................................................................................................................8
2.2 - Typical control panel ................................................................................................................................................................ 12
2.3 - Chiller owchart and component function description ............................................................................................................14
3 - OPERATING INSTRUCTIONS .............................................................................................................................................. 17
3.1 - Self-diagnostic function............................................................................................................................................................17
3.2 - Description of keys and their functions.................................................................................................................................... 18
3.3 - Control board settings...............................................................................................................................................................19
3.4 - Cooling operation ..................................................................................................................................................................... 21
3.5 - Changing the information on the data display.......................................................................................................................... 22
3.6 - Changing display and setpoint..................................................................................................................................................23
3.7 - Maintenance message............................................................................................................................................................... 23
3.8 - Alarm messages and actions required....................................................................................................................................... 23
4 - MAINTENANCE....................................................................................................................................................................... 25
4.1 - Daily maintenance .................................................................................................................................................................... 25
4.2 - Periodic maintenance................................................................................................................................................................28
4.3 - Recommended maintenance and main component replacement schedule............................................................................... 29
4.4 - Water treatment......................................................................................................................................................................... 30
5 - TROUBLESHOOTING ............................................................................................................................................................ 32
6 - INSTRUCTIONS....................................................................................................................................................................... 34
6.1 - Absorbent sampling method ..................................................................................................................................................... 34
6.2 - Concentration measurement method ........................................................................................................................................34
7 - MAINTENANCE CONTRACT ............................................................................................................................................... 36
7.1 - Annual maintenance contract.................................................................................................................................................... 36
7.2 - Inspection report....................................................................................................................................................................... 36
7.3 - Warranty.................................................................................................................................................................................... 36
APPENDIX 1 - TROUBLESHOOTING FLOWCHART ...........................................................................................................37
Problem 1 - Chiller does not run....................................................................................................................................................... 37
Problem 2 - Chilled-water temperature is high................................................................................................................................. 38
Problem 3 - Generator alarm............................................................................................................................................................. 39
Problem 4 - Combustion alarm (16DJ only)..................................................................................................................................... 40
Problem 5 - Water alarm ................................................................................................................................................................... 41
Problem 6 - Motor alarm................................................................................................................................................................... 41
Problem 7 - System alarm................................................................................................................................................................. 42

4
1 - PRECAUTIONS
1.1 - Safety precautions
• Before operating this chiller, first carefully read the
following instructions.
• All precautions are classified as either WARNING or
CAUTION.
WARNING: Failure to observe this instruction may result in
serious injury or death.
CAUTION : Failure to observe this instruction may cause an
injury or failure of chiller. Depending on circumstances, this
may result in serious injury or death.
This symbol denotes danger, a warning or a caution.
The illustration in this symbol shows the specic
description of the item.
This symbol prohibits an action.
The illustration next to this symbol shows the specific
description of the item.
This symbol instructs an action to be done.
The illustration in this symbol shows the specific
description of the item.
• After reading this manual, it should be kept in a safe place
to be available for any user at any time.
TURN OFF THE BREAKER BEFORE CLEANING AND
CHECKING
Always turn off the circuit breaker before cleaning and checking
the cooling tower fan, chilled water pump, or other components
linked to the chiller, to provide protection from electric shock or
or possible injury by the rotating fan.
INSPECTION
DO NOT TOUCH THE CONTROL PANEL SWITCH WITH
WET HANDS
Do not touch the switch inside the control panel with wet hands
to avoid electric shock.
STOP OPERATION IN CASE OF FIRE, EARTHQUAKE OR
ELECTRICAL STORMS
Stop operation in case of re, earthquake or an electrical storm, to
prevent re or electric shock.
DO NOT TOUCH THE WIRING INSIDE THE CONTROL
PANEL
Do not touch the wiring inside the control panel to avoid electric
shock.
SWITCH
DO NOT TOUCH
DO NOT TOUCH
MUST BE OBSERVED
1.1.4.1 Safety considerations
WARNINGS

5
DO NOT TOUCH ROTATING MOTOR PARTS
Keep away from rotating parts of motors or pumps to avoid
possible injury.
PROHIBITED
SOLVE ALL PROBLEMS BEFORE RESTARTING THE
CHILLER
Solve all the problems before restarting the chiller after a safety
or security device is activated.
MUST BE OBSERVED
DO NOT PLACE HEAVY OBJECTS ON THE CHILLER
OR CONTROL PANEL
Do not place heavy objects on the chiller or control panel as
these may fall off and cause injuries.
PROHIBITED
DO NOT CLIMB ON THE CHILLER
Do not climb on the chiller as you may fall off.
PROHIBITED
AUTHORIZED PERSONNEL ONLY
A notice, "For Authorized Personnel Only" must be afxed to
the chiller to stop unauthorized personnel from touching it. If
necessary surround the chiller by a protective fence. Misuse of
the chiller may cause injury.
PROHIBITED
WARNINGS CAUTIONS
VENTILATE THE MACHINE ROOM
Ventilate the machine room while nitrogen gas is discharged to
avoid anoxia.
MUST BE OPERATED
DO NOT POUR WATER ON THE CHILLER OR CONTROL
PANEL
Do not pour water on the chiller or control panel to avoid electric
shock.
PROHIBITED

6
USE THE CORRECT POWER SUPPLY
This is indicated on the chiller name plate. Use of an incorrect
power supply may cause re or electric shock.
PROHIBITED
NEVER CHANGE THE SET VALUES
Never change the set values of the safety and/or protective
devices. Wrong settings may damage the chiller or cause re.
PROHIBITED
DO NOT TOUCH THE ABSORBENT
Do not touch spare or leaked absorbent, as this can cause metal
corrosion or skin disease.
PROHIBITED
PROHIBITED
STOP THE PURGE PUMP TO REPLACE OIL
Stop the purge pump when replacing oil to avoid possible injury
by fuel spillage.
MUST BE OBSERVED
DO NOT TOUCH HIGH-TEMPERATURE AREAS
Do not touch high-temperature areas, as they may cause burns.
These areas are indicated by caution label.
What
voltage?
STOP
CAUTIONS
OBSERVE THE SPECIFIED WATER/STEAM PRESSURE
The specied chilled water, cooling water and steam pressure
must be strictly observed.
Incorrect pressure may cause the water to leak/spray which can
lead to short circuits or burns.
MUST BE OBSERVED

7
4: Absorption
chiller
1.1.3 - Operating precautions
1. Keep the purge valve tightly shut to prevent air from
leaking into the chiller, which may cause the failure of the
chiller.
2. Keep the power supply to the control panel turned on,
unless carrying out maintenance or service.
3. During the chiller dilution cycle the chilled-water pump
(both the primary side and the secondary side) and air
handling unit must be operated for the required time. The
chiller has some cooling capacity, even in the dilution
cycle. Do not stop the air handling unit before the required
time to prevent possible subcooling.
4. Do not perform an insulation test on the control circuits of
the electric controller.
5 . Use a Carrier recommended interlock system to stop/start
the auxiliary equipment. The interlock system automatically
stops/starts the chilled-water pump and cooling water
pump. Follow the start procedure in Figure 1 below.
Fig. 1 - Auxiliary equipment start/stop sequence
Start sequence
1: Chilled
water pump
2: Cooling
water pump
3: Cooling
tower
5: Air
handling
unit
1 Absorption
chiller
2: Cooling
water pump
3: Cooling
tower
4: Chilled
water pump
5: Air handling
unit
Stop sequence
ONLY AUTHORIZED PERSONNEL SHOULD SERVICE
THE CHILLER
Only authorized personnel should service the chiller. Incorrect
service could result in electric shock or re.
PROHIBITED
1.1.2 - Safety precautions for repair, moving or disposal
ONLY AUTHORIZED PERSONNEL SHOULD REMOVE OR
REPAIR THE CHILLER
Any relocation or moving of the chiller should only be done by
authorized personnel. Incorrect work could result in water leaks,
electric shock or re.
MUST BE OBSERVED
ONLY AUTHORIZED PERSONNEL SHOULD DISPOSE OF
THE CHILLER
To dispose of the chiller, contact local specialists. Incorrect
disposal may result in absorbent leaks and cause metal corrosion
or skin disease, electric shock or re.
MUST BE OBSERVED
WARNINGS
CAUTIONS

8
2 - MACHINE ILLUSTRATIONS
2.1 - Typical chiller views - all sides
2.1.1 - 16NK 11 to 63
Fig. 2 - Water header side
6
7
8
2
9
1
3
4
5
Legend
1 Condenser
2 Chilled water outlet
3 Chilled water inlet
4 Evaporator
5 Cooling water inlet
6 Low-temperature generator
7 High temperature generator
8 Steam inlet
9 Absorber
Fig. 3 - Water header side (rear)
12
3
4
5
7
6
Legend
1 High-temperature generator
2 Low-temperature generator
3 Cooling water outlet
4 Evaporator
5 Steam trap
6 Condenser
7 Absorber
1.2 - High-temperature - high-voltage caution
• Do not touch the chiller during operation since its surface
becomes hot.
• Do not touch the absorbent pump, the refrigerant pump,
and the purge pump during operation, since their surface
becomes hot.
• Do not touch the junction box during operation, since it
contains high-voltage wiring.
• Do not touch the terminal box during operation, since it
contains high-voltage wiring.
1.3 - Environmental requirements
1.3.1 - Installation considerations
The 16NK absorption chiller is designed for indoor installation
in a machine room. The protection rating of the chiller is IP40.
Room temperature should be maintained between 5°C and
40°C to protect against solution crystallization during chiller
shutdown. The humidity in the machine room must be kept
below 90%.
1.3.2 - Field wiring
The machines should be connected to a power source that
complies with overvoltage category III (IEC 60664). All other
wiring should comply with overvoltage category II.
1.3.3 - Altitude
Please install the absorption chiller at a maximum height of
1000 m above sea level. If the location is higher than 1000 m
above sea level, please contact your local Carrier office.
1.4 - Water treatment
Refer to chapter 4 "Maintenance”.

9
Fig. 4 - Control panel side (evaporator side)
1 2
345
6
Legend
1 Control panel
2 Purge tank
3 Refrigerant drain heat reclaimer
4 Absorbent pump 1
5 Refrigerant pump
6 Refrigerant blow valve
Fig. 5 - High-temperature generator side (absorber side)
12
3 4
56 7 8
Legend
1 Purge unit
2 High-temperature heat reclaimer
3 Purge pump
4 Low-temperature heat exchanger
5 Low-temperature heat reclaimer
6 Steam drain outlet
7 High-temperature heat exchanger
8 Absorbent pump 2

10
2.1.2 - 16NK 71 to 81
Fig. 6 - Water header side
12
3
4
5
6
8
7
10
9
2
3
1
4
5 6 7
Fig. 7 - Water header side (rear)
Legend
1 Steam inlet/high-temperature generator
2 Low-temperature generator
3 Cooling water outlet
4 Chilled water outlet
5 Chilled water inlet
6 Cooling water inlet
7 Condenser
8 Absorber
9 Evaporator
10 Absorber
Legend
1 Low-temperature generator
2 High-temperature generator
3 Steam drain outlet
4 Condenser
5 Absorber
6 Evaporator
7 Absorber
1 2 3 4
5678
Fig. 8 - Control panel side
Legend
1 Control panel
2 Refrigerant blow valve
3 Purge tank
4 Purge unit
5 Purge pump
6 Refrigerant drain heat exchanger
7 Refrigerant pump
8 Low-temperature heat exchanger