S&A CW-7800 Series User manual

CW-7800
INDUSTRIAL CHILLER
USER MANUAL

CW-7800 Series
Contents
<1> Cautions ----------------------------------------------------------------------- 3
<2> Contour and parts introduction---------------------------------------- 4
<3> Installation -------------------------------------------------------------------- 5
<4> Unit introduction and parameters adjustment -------------------- 6
<5> Conductivity meter（Optional）--------------------------------------- 12
<6> Alarm signal and output terminal ------------------------------------- 12
<7> Specifications ---------------------------------------------------------------- 13
<8> Simple troubleshooting --------------------------------------------------- 14
2

CW-7800 Series
Thank you for using the machine from GUANGZHOU TEYU
ELECTROMECHANICAL CO., LTD. Please read the installation instructions
carefully before installing and operating and keep it properly.
This installation instructions is not a quality assurance. GUANGZHOU TEYU
ELECTROMECHANICAL CO., LTD reserves the right to the interpretation
of correction of typographical errors, improper mentioned information and product
improvement. The amended content will be reprinted in installation instructions
without notice in advance.
<1> Cautions
1. Please ensure that the power supply and electrical outlet are in good contact
and the earth wire must be firmly grounded!
The water chiller installation must be done by professional person in order to
avoid machine damage or accidents by misoperation.
2. Please make sure there is stable and normal voltage for the working chiller!
As the refrigeration compressor is more sensitive to the power supply and
voltage, so the operating voltage of our standard product is ±10％of the rated
voltage. If you do need a wider operating voltage range, customization is
available for us.
3. Unmatched power frequency can cause the chiller damage!
Please choose model of 50Hz or 60Hz according to actual circumstance.
4. To protect the pump, it’s strictly forbidden to run the chiller without water in the
storage water tank!
The new machine is packed after draining whole water in the tank, so please
make sure the tank has water inside before machine starting, otherwise it’s
easily to have the pump damaged. When the water level is below the green
(NORMAL) range of the water level gauge, the cooling capacity of our chiller
will go down slightly. Hence please ensure the water level is within the green
(NORMAL) range. To drain through circulating pump is strictly prohibited!
5. Please be sure that the air inlet and air outlet are in good ventilation!
There must be at least 100cm from obstructions to the air outlet and at least
50cm between obstructions and the lateral air inlet.
6. Please pay attention to the effect of the condensate water!
With greater ambient humidity, when the water temperature is lower than the
ambient temperature, the condensate water will generate on the surface of
water circular pipes and the cooled components. If above circumstance
appears, it is recommended to set a higher water temperature or keep pipes
and cooled parts warm.
7. Please do turn on the chiller first before turn on the laser machine; turn off the
laser machine first before turn off the chiller.
8. Professional use only!
The appliance is not to be used by children or persons with reduced physical,
sensory or mental capabilities, or lack of experience and knowledge, unless
they have been given supervision or instruction, children being supervised not
to play with the appliance!
3

CW-7800 Series
<2> Contour and parts introduction
AIR INLET
WATER SUPPLY INLET
WATER INLET (L)
WATER OUTLET (L)
WATER LEVEL GAUGE
WATER DRAIN
WASTE WATER DRAIN
OVERFALL GAP
WATER OUTLET (H)
WATER INLET (H)
AIR OUTLET
FILTER
LOW TEMP PUMP
LOW PRESSURE
HIGH PRESSURE
POWER
ALARM SIGNAL OUTPUT PORT
POWER SWITCH
HIGH TEMP PUMP
CONDUCTIVITY METER
TEMPERATURE
CONTROLLER
4

CW-7800 Series
<3> Installation
It is very simple to install this industrial cooling machine. The installation for the
first time of the new machine can be carried out by following steps:
1. Open the package to check if the machine is intact and all the necessary
accessories are completed.
2. Open the water supply lid to feed cooling water.
Observing the water level gauge to feed water slowly, be careful not to have the
water overflowed!
3. According to system conditions, please connect the water inlet and outlet pipe
properly.
4. Plug in power, turn on the power switch. (Do not start up without water in the
water tank!)
(1) The water pump starts working once the power switch is turned on. If “E8” error
code is displayed on the upper window of temperature controller, please adjust
the 3-phase wiring connection order
(2) The first time of operating may cause more bubbles in the pipe leading to a flow
alarming occasionally, but running for a few minutes later, it will go back to
normal.
(2) If the chiller starts for the first time, you must immediately check whether the
water pipe leaks.
(3) Power switched on, if the water temperature is under the set value, it is normal
that fans and other components of the machine do not work. The temperature
controller will automatically control the working conditions of the compressor,
magnetic valve, fans and other parts based on the set controlling parameters.
(4) As it takes a longer time to start over the compressor and other components,
according to different conditions, the time is range from seconds to minutes, so
do not turn on and off frequently..
5. Check the water level in the water tank.
The first starting up of a new chiller will empty the air in the water pipe, causing a
slight water level decline, but in order to keep the water level in the green area, it
is allowed to add adequate water again. Please observe and record the current
water level, and inspect it again after the chiller running for a period of time, if
the water level drops obviously, please re-inspect the water pipeline leakage.
6. Adjust parameters of temperature controller.
CW-7800 series use an new intelligent controller. It works in defaulted constant
temperature control mode for the low temperature end with water temperature
set at 25℃which can be adjusted as needed. The high temperature end works
in intelligent control mode and it will self-adjust controlling parameters
according to the ambient temperature changes.
Normally users do not need to adjust the parameters. If it is necessary, please
refer to page 6 , “Unit introduction and parameters adjustment.”
With automatic startup function, refrigeration system starts working once the
chiller is electrified. (Indicator light is on).
5

CW-7800 Series
<4> Unit introduction and parameters
adjustment
(1) The unit use wire LCD temperature controller to realize more precise
temperature control and stronger capacity of resisting disturbance. It
supports MODBUS-485 communication with transmission distance up to
1.2km;
(2) It has water line anti-icing function. Under standby condition, it
functions when the room temperature is below 5℃;
(3) It has water tank heating function;
(4) It has water line actual flow monitoring function;
(5) It has actual conductivity monitoring function.
1. Temperature control panel introduction and parameters adjustment
（1）The control panel has LCD screen with 7 system operation buttons which are
Language Switching-button (Lang), UP-button (² ), Down-button (¼), Power-button
Set-button (Set), Quick Set-button (Quick Set) and Quit-button (Quit). Turn off
the chiller by pressing the Power-button for 3 sec while other operations can be
completed by short press.
（2）User parameters quick-adjusting: under normal operation condition, press
Quick Set-button to set the user menu. When it displays the set item, press Quick
Set to enter into parameter adjustment interface. Press ² or ¼ to to switch the
parameter items. If the parameters need to be modified, press Quick Set-button to
enter into parameter values and press ² or ¼ to adjust it. Save the values and
return to parameter quick setting interface by pressing Quit-button when the
adjustment is completed. If there is no more action within 15 sec, it will
automatically exit modifying status with modified parameters saved.
（3）User menu: under normal operation condition, press Set-button for 5 sec to
show user input password interface. Input •168• by pressing ² or ¼, then press
Set-button to enter into User menu to set the parameters. If the password is
incorrect, it will quit the setting interface and turn to normal operation interface.
6

CW-7800 Series
The default password 168 must be kept well. The user menu can not be accessed if
the password is forgotten and no backup password is available.
Under user menu, in parameter items interface, press ² or ¼ to switch the
items. If the parameters need to be modified, press Set-button to enter into
parameter values and press ² or ¼ to adjust it. Save the values and return to
parameter interface by pressing Set-button and press Quit-button to quit the user
menu. If there is no more action within 15 sec, it will automatically exit modifying
status with modified parameters saved.
（4）Check the history failure records: under normal operation condition, press
Set- button and ² for 5 sec to access password input interface. Input password
“123” and confirm by pressing Set-button, it will be in failure view status if the
password is correct, if not, it will quit. When the system is under failure records
viewing, it will show the first failure record and code. Press ² or ¼ can look over
the failure records and press Quit-button to quit the failure viewing status.
(5) Restore factory settings: under normal operation condition, press and hold
Set-button and Power-button for 10 sec to have the password input interface
popped up then input password “615” to enter into administrator setting
parameters restoration function, and it will display “RECOVERY SUCCESS” and
turn to operation condition after 2 sec. If the password is incorrect, it will quit the
password input interface and turn to operation condition.
(6) Unit operation condition query: the screen will display the operation
conditions of the compressor, water pump and the indoor exhaust temperature
parameters, etc. by pressing Quick Set-button and ² at the same time and release
them. Press ² or ¼ for page turning and it will automatically exit after displaying
for 5 sec.
(7) Clock adjustment: under normal operation condition, press Quick
Set-button for 5 sec to access clock adjustment interface with time/year flashing.
Press ² or ¼ to adjust year and confirm by pressing Quick Set-button; with time
flashing, press ² or ¼ to adjust hour and confirm by pressing Quick Set-button;
with minute flashing, press ² or ¼ to adjust minute and save the clock setting by
pressing Quick Set- button.
(8) Language switching: the system default language is Chinese. For switching
to English, press Lang-button and the system will change the Chinese interface to
English interface as default language.
(9) Forced refrigeration: under normal operation condition, press ² or ¼ at the
same time for 5 sec to activate forced refrigeration function. Press Power-button
can stop the machine and cancel forced refrigeration function.
7

CW-7800 Series
2. Detailed parameter setting is as below table:
Order Code Set item Range Factory
setting Remark
1 F1 Set temp. F7
～
F6/-20
～
40 25
Intelligent
mode /
Constant
temp mode
2 F2 Temp. difference values -15
～
5 -2
3 F3 Cooling hysteresis 0.1
～
3.0 0.1 0.1 resolution
ratio
4 F4 Way of control 0
～
1 0 0 Constant, 1
Intelligent
5 F5 Set temp. F7
～
F6/-20
～
40 30
Intelligent
mode /
Constant
temp mode
6 F6 Temp. difference values -15
～
5 -2
7 F7 Cooling hysteresis 0.1
～
3.0 1 0.1 resolution
ratio
8 F8 Way of control 0
～
1 1 0 Constant, 1
Intelligent
9 F9 The highest set temp.
（
F10+1
）～
40 35 Constant
temp. mode
10 F10 The lowest set temp. 1
～（
F9-1
）
20
Min. 1,
Constant
temp. mode
invalid
11 F11 Ultra-high room temp.alarm 40
～
50 45
12 F12 Ultra-high water temp. alarm 1
～
20 10
13 F13 Ultra-low water temp. alarm 1
～
20 15
14 F14 Temp. alarm delay 0
～
30 5 Minute
15 F15 Sensor failure alarm delay 0
～
180 10 Second
16 F16 Water flow detection delay
of machine startup 0
～
180 5 Second
8

CW-7800 Series
17 F17 Flow alarm delay 0
～
180 2 Second
18 F18 Heating hysteresis 0
～
10 0.8 0.1 resolution
ratio
19 F19 Water pump stop delay 0
～
180 5 Second
20 F20 Startup delay 0
～
180 30 Second
21 F21 Compressor activate
protection 0
～
180 30 Second
22 F22 Turn on setting of phase
sequence protection On off On
23 F23
Turn on setting of external
input function (startup and
standby)
On off off
24 F24 NO and NC setting of
external input function NO/NC NC
NO-normally
opened
NC-normally
closed
25 F25 External input activation
delay 0
～
180 0 Second
26 F26 External input standby
activation delay 0
～
180 0 Second
27 F27 Conductivity alarm
activation setting On off off
28 F28 Ultra-high conductivity
alarm setting value 0.5
～
100 10 µs/cm
39 F29 Relay NO/NC setting under
lower limit of conductivity NO/NC NC
NO-normally
opened
NC-normally
closed
30 F30 Relay output setting under
lower limit of conductivity 0.5
～
100 2.5 µs/cm
31 F31 Ultra-low conductivity alarm
setting value 0.5
～
100 2 µs/cm
3. Failure warning processing mode
When alarm occurs, the failure alarm code will be displayed on the upper right
corner of the LCD screen. In alarming state, the alarm sound could be
suspended by pressing any button, but the alarm display remains until the
alarm condition is eliminated.
9

CW-7800 Series
4. Failure code table:
Failure
code Description Alarm phenomenon Alarm action Elimination
method
E00 Communication
failure alarm
E00 shown with alarm
sound None
Automatic clearing
after mainboard and
operation panel are
connected well
E01 Low temp. system flow
alarm
E01 shown with alarm
sound
The compressor, condenser fans and
heater of the high/low temp.
system shut down
Automatic clearing
E02 High temp. system
flow alarm
E02 shown with alarm
sound
Heater of the high temp. system
shut down Automatic clearing
E03 Ultra-high room
temp.alarm
E03 shown with alarm
sound
Each refrigeration part runs under
usual procedures Automatic clearing
E04
Low temp. system
ultra-low water temp
alarm
E04 shown with alarm
sound
The compressor, condenser fans and
heater of the high/low temp.
system shut down
Automatic clearing
E05
Low temp. system
ultra-high water temp
alarm
E05 shown with alarm
sound
Each refrigeration part runs under
usual procedures Automatic clearing
E06
High temp. system
ultra-low water temp
alarm
E06 shown with alarm
sound
Each refrigeration part runs under
usual procedures Automatic clearing
E07
High temp. system
ultra-high water temp
alarm
E07 shown with alarm
sound
Heater of the high temp. system
shut down Automatic clearing
E08 Wrong phase and
lacking phase alarm
E08 shown with alarm
sound
The water pump, compressor,
condenser fans and heater of the
high/low temp. system shut down
Manual clearing
E09 Compressor overload
alarm
E09 shown with alarm
sound
The compressor, condenser fans and
heater of the high/low temp.
system shut down
Manual clearing
E10 Low temp. water pump
overload alarm
E10 shown with alarm
sound
The water pump, compressor,
condenser fans and heater of the
high/low temp. system shut down
Manual clearing
E11 High temp. water pump
overload alarm
E11 shown with alarm
sound
The water pump and high temp.
system heater shut down Manual clearing
E12 Refrigeration system
high pressure alarm
E12 shown with alarm
sound
The compressor and condenser fans
shut down Manual clearing
E13 Refrigeration system
low pressure alarm
E13 shown with alarm
sound
The compressor and condenser fans
shut down Automatic clearing
E14 Room temp. sensor
failure alarm
E14 shown with alarm
sound
Switched to constant temp. mode
and each refrigeration part runs
under usual procedures
Automatic clearing
10

CW-7800 Series
E15
Low temp. system
water temp. sensor
failure alarm
E15 shown with alarm
sound
The water pump, compressor,
condenser fans and heater of the
high/low temp. system shut down
Automatic clearing
E16
High temp. system
water temp. sensor
failure alarm
E16 shown with alarm
sound
High temp. system water pump and
heater shut down Automatic clearing
E17 Ultra-high
conductivity alarm
E17 shown with alarm
sound
Each refrigeration part runs under
usual procedures Automatic clearing
E18 Ultra-low
conductivity alarm
E18 shown with alarm
sound
Each refrigeration part runs under
usual procedures Automatic clearing
E19 Ultra-low water level
alarm
E19 shown with alarm
sound
The unit runs normally under set
values; the water pump,
compressor, condenser fans and
heater of the high/low temp.
system shut down
Automatic clearing
E20 Exhaust temp. sensor
failure alarm
E20 shown with alarm
sound
Each refrigeration part runs under
usual procedures Automatic clearing
E21 Ultra-high exhaust
temp. alarm
E21 shown with alarm
sound
Each refrigeration part runs under
usual procedures Automatic clearing
11

CW-7800 Series
<5> Conductivity meter（Optional）
(1) This machine is equipped with conductivity meter to monitor deionized water,
detection range from 0.1-20µS.
(2) Alarm signal output for deionized water of over standard conductivity values
(optional).
(3) Alarm indicating for deionized water of over standard conductivity values
(optional).
<6> Alarm signal and output terminal
For ensuring the equipment will not be damaged when abnormal condition occurs
in the chiller, it has alarm protection function.
(1) Working condition table of alarm signal
Note: The flow alarm is connected to the normally open relay and normally closed
relay contacts, requiring operating current less than 5A, working voltage less
than 300V.
Unit condition Built-in buzzer of
temp. controller OUT
H1
、
H2 OUT H1
、
H3
ILUS
Working normally No Sound Disconnection Breakover
E00
、
E01
、
E08
、
E09
、
E10
、
E12
、
E13
、
E15 Sounds Breakover Disconnection
E02
、
E03
、
E11
、
E14
、
E16
、
E17
、
E18
、
E20
、
E21 Sounds Disconnection Breakover
E04
、
E05
、
E06
、
E07 Sounds Breakover Disconnection Optional
E19 Sounds Breakover Disconnection
Activate
after output
terminal
delaying
12

CW-7800 Series
<7 > Specifications
CW- 7800
Note: the cooling capacity is under 30 ℃water tem pera
temperature working conditions with standard voltage.
Model
CW-7800ETH
Voltage AC 3P 380V
Frequency 50Hz
Current 9~16A
Compressor
power
7.15KW
9.54HP
Refrigeration
capacity
1705Btu/h +63085Btu/h
0.5KW +18.5KW
431Kcal/h +15948Kcal/h
Refrigerant R-22 / R407C
Refrigerant
charge 4700g
Precision ±1℃
Reducer thermostatic expansion valve
Protection Overcurrent protection for compressor, flow alarm, over temperature alarm
Pump power 0.75KW+1.1 KW
Tank capacity 15+135L
Inlet and outlet Rp 1/2’’+ Rp 1’’
Max. lift 53M+53M
Max. flow 70 L/min +116L/min
N.W 460Kgs
G.W 575Kgs
Dimension 168 X 82 X 178 cm (L X W X H)
Package
dimension 179 X 105 X 199 cm (L X W X H)
13

CW-7800 Series
<8> Simple troubleshooting
Failure Failure Cause Approach
Machine turned on but
unelectrified
Power cord is not plugged in place Check and ensure the power interface and the power plug is plugged in place
and in good contact.
Fuse burnt-out
Open the electric box cover, check the
protective tube, replace with spare one
if necessary and check whether the
power supply voltage is stable; Check
and ensure the power interface and the
power plug are in good contact. •
Flow Alarm
(controller displays E01 or
E02) use a water pipe
directly connect to the water
outlet and inlet but still
without water flowing
Water level in the storage water tank is
too low
Check the water level gauge display,
add water until the level shown in the
green area; And check whether water
circulation pipe leaks.
Flow alarm occurs while
running with other
equipment
(controller displays E01 or
E02), but there is water
flowing and no alarm when
use a water pipe directly
connected to the chiller
water outlet and inlet.
Water circulation pipes are blocked or
a pipe bending deformation. Check water circulation pipe
Ultra-high temperature
alarm(controller displays
E05 or E07)
Blocked dust gauze, bad thermolysis Unpick and wash the dust gauze
regularly
Poor ventilation for air outlet and inlet To ensure a smooth ventilation
for air outlet and inlet
Voltage is extremely low or astable To improve the power supply circuit or
use a voltage regulator
Improper parameter settings on
thermostat To reset controlling parameters or restore factory settings
Switch the power frequently To ensure there is sufficient time
for refrigeration
(more than 5 minutes)
Excessive heat load Reduce the heat load or use other
model with larger cooling capacity
Alarm for ultra-high room
temperature(controller
displays E03)
The working ambient
temperature is too high for the chiller To improve the ventilation to guarantee that the machine is running under 40
℃
Serious problem of
condensate water
Water temperature is much lower than
ambient temperature, high humidity
Increase water temperature or
to preserve heat for pipeline
Water drains slowly from
outfall during water
changing Injection port is not open Open the injection port
14

CW-7800 Series
CW-7800
工业循环冷水机
使用安装说明书
15

CW-7800 Series
目录
一．使用注意事项 ------------------------------------------------------------------ 17
二．部件介绍 ----------------------------------------------------------------------- 18
三．安装说明 ----------------------------------------------------------------------- 19
四．机组介绍与参数调整 ------------------------------------------------------- 20
五. 电导率表（选装） ------------------------------------------------------------- 24
六．报警信号与输出端口 ------------------------------------------------------- 24
七．技术参数 ----------------------------------------------------------------------- 25
八．简单故障处理 ------------------------------------------------------------------ 26
16

CW-7800 Series
感谢您购买广州特域机电有限公司的产品，请在使用前仔细阅读使用安装说明书，并妥
善保管。
本使用安装说明书并非质量保证书，对印刷错误的更正, 所述信息谬误的勘误，以及产
品的改进，均由广州特域机电有限公司随时做出解释，恕不预先通知，修正内容将编入再版
使用安装说明书中。
一、使用注意事项
1、请确保电源线接触良好并且地线可靠接地！
冷水机的安装应由专业人员完成，以避免您的误操作而损坏机器或发生意外。
2、请确保冷水机的工作电压稳定、正常！
由于制冷压缩机对电源电压比较敏感，我公司标准产品的正常工作电压为额
定电压±10％。如果确实需要更宽的工作电压范围，可以另行定制。
3、电源频率不匹配会导致机器损坏！
请根据实际情况，使用 50Hz 或60Hz 的机型。
4、为保护循环水泵，严禁无水运行！
新机装箱前都排空了储水水箱，请确保水箱注入足够水后再开机，否则水泵
极易损坏。当水箱水位在水位计绿色（NORMAL）范围以下时，冷却机制冷
量会轻微下降，请保证水箱水位在水位计的绿色（NORMAL）范围内。严禁
使用循环泵排水！
5、请确保冷水机入风、出风通道顺畅！
冷水机上面的出风口距离障碍物要留有 100cm 以上的距离，侧面的入风口
离障碍物要求距离在 50cm 以上。
6、请注意冷凝水的影响！
当水温低于环境温度，并且环境湿度较大时，循环水管与被冷却器件表面会
产生冷凝水。当出现以上情况时，建议调高水温或对水管与被冷却器件进行保
温。
7、开机时要先开冷水机，再开激光机；关机时要先关闭激光机，再
关闭冷水机！
8、本产品为工业设备，请勿让非专业人士操作！
17

CW-7800 Series
二、 部件介绍
温度控制器
电源
低温水压表
报警信号输出端口
冷媒低压表
冷媒高压表
电源开关
高温水压表
电导率表
入风口
注水口
低温冷却水入口
高温冷却水入口
出风口
排水口
水位计
排污口
溢水口
高温冷却水出口
低温冷却水出口
过滤器
18

CW-7800 Series
三、安装说明
冷水机安装使用非常简单，新机首次使用可按以下步骤进行：
1、打开包装，检查机器是否完好，附件是否齐备。
2、拧开注水口和机器顶部的排气口，加入冷却水。
加水时应同时观察水位计的水位慢慢加水，注意不要让水溢出！
3、根据设备情况接好出水管、入水管。
4、接上电源线，打开电源开关。（严禁无水开机！）
（1）打开电源开关后，水泵会立即启动。如果温度控制器上显示窗显示“E8”
故障，请调整三相电源的接线顺序。
（2）新机第一次开机时管路中会有较多的气泡导致机器偶尔流量报警，水泵连
续运行数分钟后就会恢复正常。
（3）第一次开机后，必须马上检查水管管路有无漏水。
（4）按温控器开关键启动制冷系统后（运行指示灯亮），如果水温低于设定温度，
机器的风扇等器件不工作是正常现象。温控器会根据设定的控制参数自动
控制压缩机、电磁阀、风扇等器件的工作状态。
（5）由于压缩机等器件有一个较长的启动过程，根据不同的工况从几十秒到数
分钟不等，所以不要频繁启停冷水机。
5、检查水箱水位。
新机开机后排空了水管中的空气，水箱水位会略有下降，为了保持水位在
绿色区域，可以再次适量加水。观察并记下当前的水位情况，等冷水机运行
一段时间后再次观察水位计，如果水位下降明显，就要再次检查水管管路的
渗漏情况。
6、调整温控器参数。
CW-7800 双温双泵系列冷水机使用的智能温控器，低温端出厂设置为恒温
控制模式，水温设定为 25℃，用户可以根据需要调整。高温端为智能控制模
式，它会根据室温的变化自动调整控制参数。
一般情况下，不需要调整控制参数，如确实必要的，可参考第 20 页《机组
介绍与参数调整》。
7、机器带自启动功能，上电会自启动制冷系统。（运行指示灯亮）
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CW-7800 Series
四、机组介绍与参数调整
（1）机组采用线控式液晶显示温度控制器，能实现更精准的温度控制，
具有更好的抗干扰能力。支持 MODBUS-485 通讯，最远传输距离可达
1200 米。
（2）具有防水路结冰功能。待机状态下，当气温低于 5度时，此功能启动。
（3）具有水箱加热功能。
（4）具有实时水路流量监控功能。
（5）具有实时电导率监控功能。
1、温控器面板操作及参数设置
（1）使用液晶屏显示，七个按键用于系统操作，分别为语言切换键（Lang）、 上
键（▲）、 下 键 （ ▼）、电源键（ ）、设置键（Set）、快速设置键（Quick Set）、
退出键（Quit）。关机需要长按电源键三秒，其他操作都是短按按键即可。显示
界面如下：
（2）用户参数快速设置：在正常运行状态下，按下“quick set”键可以进行用
户菜单设置，在显示设定项目时，按“quick set”键，可进入参数调整界面，
按上、下键可以进行参数项的切换，如需对参数进行修改，按“quick set”键
进入参数值, 按上、下键进行具体参数值调整，调整完毕后，再按“quick set”
键保存参数值并返回参数界面，按“quit”键可退出参数快速设置界面，同时保
存所有参数。无按键操作 15 秒后，系统自动退出设置界面，同时保存修改好的
参数。
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