Leizig FCC225 User manual

Enclosure Climate Control Unit Assembly Instructions
工业控制柜制冷机安装说明书
(FCC系列产品)
FCC225
FCC320
FCC680
FCC825
FCC1100
FCC1500

1. 应用场合
2. 技术参数、安装开孔图
3. 安装方式
4. 安全与注意
5. 电气连接
6. 操作说明
7. 工作原理
8. 维护保养
9. 质量保证
10. 电气原理图
11. 常见故障分析及解决措施
中 文
内容

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FCC225/320/225Q/320Q外形图:
2.技术参数
FCC225P/320P外形图和安装开孔图:
1 5 5
300
560
526
155
55
18 300
264
450 56
530
560
14
4- 9
260
300
560
30
300
53 194
32
560
170
161148
230
35
490
4- 9
工业控制柜制冷机通过把控制柜内的空气冷却同时把柜内热量驱散出柜外,从而保护控
制柜内的电气元件在可控的范围内运行。制冷机同时具有除湿功能,保证控制柜内有理想的
温度和湿度。FCC冷却单元特别适合温度在40℃至55℃范围内使用,可以达到其它散热产品
如空气/空气热交换器、风扇和过滤器单元达不到的效果。
230
278
1.应用场合
264
530
FCC225Q/320Q安装开孔图:
FCC225/320安装开孔图:
半内嵌安装 外挂式安装 无螺钉
FCC225 FCC225P FCC225Q
30200001 30200049 30200547
FCC320 FCC320P FCC320Q
30200002 30200050 30200548
19 20 19
半内嵌安装 外挂式安装 无螺钉
18 19 18
订货号
产品型号
项目
FCC225 FCC320
225
180
R134a/60g
20-55
230
202
50Hz
220-240
253
300x560x155
320
260
R134a/70g
20-55
230
258
50Hz
220-240
322
300x560x155
IP54
55dB(A)
IP54
55dB(A)
制冷功率W(L35L35)
制冷功率W(L35L50)
冷媒
o
环境温度 C
额定电压V
额定频率Hz
电压范围V
外形尺寸WxHxDmm
重量Kg
防护等级
噪音等级
安装方式
消耗功率 (L35L35)W
消耗功率W(L35L50)

FCC680P/825P外形图和安装开孔图:
330 173
55
860
818
288
330
292
17
19
860
824
61
330
860
173
330
33
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FCC680/825/680Q/825Q外形图: FCC680Q/825Q安装开孔图:
FCC680/825安装开孔图:
半内嵌安装 外挂式安装 无螺钉
FCC680 FCC680P FCC680Q
30200539 30200543 30200549
FCC825 FCC825P FCC825Q
30200540 30200544 30200550
39 40 39
半内嵌安装 外挂式安装 无螺钉
37 38 37
订货号
产品型号
项目
FCC680 FCC825
680
540
R134a/300g
20-55
230
331
50Hz
220-240
414
330x860x173
825
620
R134a/360g
20-55
230
368
50Hz
220-240
460
IP54
55dB(A)
IP54
55dB(A)
制冷功率W(L35L35)
制冷功率W(L35L50)
冷媒
o
环境温度 C
额定电压V
额定频率Hz
电压范围V
外形尺寸WxHxDmm
重量Kg
防护等级
噪音等级
安装方式
330x860x173
164
860
消耗功率W(L35L50)
消耗功率 (L35L35)W
265
394
154
82
230 290 230
18373
38
255
56 370 370
824
292

FCC1100/1500/ 外形图:1100Q/1500Q
450 185
55
1250
1200
400
450
420
406
1250
1206
590 590
1250
450 185
345 52
1250
540
395
355
180
135
450
37 474 700
180 51
FCC1100P/1500P外形图和安装开孔图:
8
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406
1206
FCC1100/1500安装开孔图: FCC1100Q/1500Q 安装开孔图:
半内嵌安装 外挂式安装 无螺钉
FCC1100 FCC1100P FCC1100Q
30200541 30200545 30200551
FCC1500 FCC1500P FCC1500Q
30200542 30200546 30200552
55 56 55
半内嵌安装 外挂式安装 无螺钉
53 54 53
订货号
产品型号
项目
FCC1100 FCC1500
1100
850
R134a/430g
20-55
230
515
50Hz
220-240
644
450x1250x185
1500
1200
R134a/550g
20-55
230
589
50Hz
220-240
736
IP54
58dB(A)
IP54
58dB(A)
制冷功率W(L35L35)
制冷功率W(L35L50)
冷媒
o
环境温度 C
额定电压V
额定频率Hz
电压范围V
外形尺寸WxHxDmm
重量Kg
防护等级
噪音等级
安装方式
450x1250x185
4848
消耗功率 (L35L35)W
消耗功率W(L35L50)

FCC系列产品每种型号都设计有半内嵌、外挂(后缀中带P)和无螺钉快速安装(后缀
中带Q)三种安装方式,客户可根据需要选择。
4.安全与注意
安全提示:制冷机为精密电气,搬运务必轻放,严禁倒置,严禁倾斜存放
注意事项:
制冷机在灰尘大、油性或者毛绒的环境务必及时清理过滤网,否则会影响制冷机性能。
制冷机内循环入风口需安装到控制柜体的上部。
控制柜外的温度不能超过55摄氏度,但短暂的高温并不影响制冷机运作。
包装应完好,如果发现制冷机有油渍,极有可能是泄漏制冷剂,包装的任何损坏都有
可能引起制冷机的故障。
控制柜必须达到IP54,如果控制柜有漏洞或缝隙,冷凝水可能会持续产生。
制冷机之间或制冷机与墙壁距离不小于200mm。
在控制柜内部,制冷机入风和出风口不可有障碍物阻塞。
制冷机需水平安装、使用,最大倾斜角度不大于2°
维护及送电必须由专业人员操作。
为避免冷凝物的形成,建议采用门位开关,保证当控制柜门打开时,制冷机关闭。
控制柜内部电气元件的热释放不能超过制冷机可用制冷功率,否则会出现制冷机长期运作。
不可用任何方式修改制冷机。
◆
◆
◆
◆
◆
◆
◆
◆
◆
◆
◆
◆
5. 电气联接
电压与频率必须与制冷机的铭牌相匹配,在制冷机电气联接前端不可有其他的温度控
制,制冷机上回路电保护元件应与制冷机额定功率相吻合,在安装时参考相关说明。
三相制冷机建议采用马达保护器。
特殊电压请参照相关手册安装使用。
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3.安装方式
6. 操作说明

6.1 按键说明
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按键 意义 功 能
SET 设置
用户参数设置功能,短按一次为查看状态,此时可按
“UP”按顺序查看各个设置值,当显示最后一个设置选
项时,再按一次“DOWN”键,即返回主页面;查看设
置值时再短按一次“SET”即进入设置状态,此时设定值
闪烁, 按 动“UP” 或“DOWN”键可增加或减少设定
值,再短按一次“SET”键可使设定值立即生效并返回查
看状态。
UP 增加
1、在设定参数时,短按此键值递增1,长按此键不放,值
快速递增。
2、在查看故障页面,有多个故障时,按“UP”上翻进行
查看系统存在的故障。
控制面板如上图所示
面板指示灯
#COM #通讯指示灯
#ALM #故障指示灯
按键
设定置
向上键
向下键
UP+SET —
查看 故 障功 能: 组 合键 按一次 进入 查看故 障, 无 故障
时,显示“ ”;有故障时:数码管显示第一个故障
代码,有多个故障时,按“UP”下翻进行查看系统存在
的故障。再按下“UP+SET”退出故障查询页面,并返
回主页面。
SET+UP+DOWN 自检 在开机读秒期间按组合键进入自检
无按键 如果不在主页面并30秒内无按键和系统无故障时则系统
自动返回主页面。
—
DOWN 减小 在设定参数时,短按此键值递减1,长按此键不放,值快
速递减。
SET+DOWN 开机读秒时,同时按组合键时进入制冷温度上下限范围设置
—

6.2 显示说明
控制板上有三个数码管指示当前室内温度,显示范围-20℃~99.9℃
机组状态 显 示
上电读秒
上电读秒时三个数码管从999~000倒数10秒,提示正在上电,
倒数后显示当前柜内温度;远控点短接时,系统关机时数码管
闪烁“OFF”,提示正在关机。
设置时 在设置页面,第一位数码管显示设置代码,后二位数码管显示
当前设置参数的值。
故障时 弹出故障显示页面,并显示第一个故障代码。
6.3 参数设置
1. 在温度显示界面,按SET键,出现下面图案,进入制冷
温度设定选项,缺省值为35, 在按一下SET键,第一个
字母闪烁,表示可以对设置值进行设置,通过增加
键和减少键进行调整.数据范围为(28-40). 在按一
下SET键,退出设置值调整。
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6.4 故障报警
根据系统设置,各故障点常闭表示故障点如果和
该排插座的DCOM(公共端)形成回路则表示正常,如
果断开则表示故障。没有用到的故障点,请将其短
接,以免引起不必要的报警。故障报警时,故障指示
灯点亮,蜂鸣器发出报警声。故障消音可按增加键。
2. 温度显示界面,按SET键,在按下减少键,出现下面图
案,进入制冷回差设定选项,缺省值为3, 再按SET键,第
一个字母闪烁,表示可以对设置值进行设置,通过
增加键和减少键进行调整.数据范围为(1-9). 在按一
下SET键,退出设置值调整。
注:如果10秒内未有任何操作,则放弃当前设定并返回温度显示界面。
故障
柜内温度探头故障
代码 推迟时间
0秒2秒
持续时间 复位操作 备注
报警、停压缩机
自动
高温报警 报警
0秒2秒自动
注:故障复位后压机延时1分钟重新开启,且需满足压缩机停机时间大于[压缩机最短
停机时间];通信故障时,屏记忆通信故障前的屏显示页面
热管温度探头故障
热管超温
0秒2秒自动
0秒2秒自动
报警、停压缩机
报警、停压缩机

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6.5 开关机
机组通电后如果满足启动内风机的条件,系统会自动延时5~15秒钟(随机值)启
动内风机,若满足压缩机机开启条件,则在内风机启动后延时10秒启动压缩机。
6.6 自检功能
在开机读秒期间按组合键进入自检,自检时每个继电器通断30秒钟,自检完成后进
入正常使用的流程。
自检顺序:
1、开机读秒按“UP”+“DOWN”+“SET”键,系统进入自检,开启内风机;
2、内风机运行30秒后,开启压缩机;
3、30秒后,关压缩机,开启外风机;
4、30秒后,关外风机,开启故障继电器;
5、30秒后,全关,退出自检,进入温控开启相应设备。
内风机在自检期间一直开
!
7. 工作原理
制冷机采用相变制冷原理,从压缩机内排出的高温高压气态制冷剂进入冷凝器,被强制
冷却为高压中温的液态制冷剂,经毛细管或膨胀阀节流后变成低温低压的液态制冷剂,进入
到蒸发器,通过相变吸收控制柜内的热量后变成气态再进入压缩机,往复循环保证控制柜的
可靠工作环境
8. 维护保养
作为免维护的制冷机,制冷机在出厂前已经过严格的测试,所有的性能参数都通过相应
认证,风机采用滚珠轴承,寿命达到三万小时。只有在灰尘大的环境才建议用过滤网,并建
议一个月清理至少两次。
长期不使用时请切断电源。
在维护,保养时务必切断电源。

10. 电气原理图
9. 质量保证
雷子克所有制冷机在正常使用下(参照4. 安全提示),拥有十五个月的免费维护,在
质保期内,返还的制冷机会在厂里或现场免费维修。
制冷 机只能 用于控 制柜 的冷却 ,如 果被错 误连接 电源 ,或违 规操作(参 照使用 说明
书),雷子克无责任承担任何的损失。
10.1 680/825,230V AC/50 Hz电路图:FCC225/320/
10.3 FCC1100/1500,230V AC/50 Hz电路图:
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内风机 外风机 压缩机
红
220V
12V
黑
BK
NO NC COM
M1 M2 M3
9 10 11 12 13 14 15 16 17
E04
连接控
制面板
AC12V B-A+
J3
J11
RS485
门位开关
热管
温度
柜内
温度
备用
35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18
故障输出
门位开关
L N
PE 1 2 345
NO NCCOM
内风机 外风机 压缩机
E04 连接控
制面板
备用
门位开关
热管
温度
柜内
温度
12V
NO NC COM
9 10 11 12 13 14 15 16 17
AC12V B-A+
RS485
35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18
1 2 345
PE
NL
J3
J11
故障输出
门位开关
NO COM NC
红
黑
BK
220V
KM
KM A1
A2
故障输出
外风机
内风机
12V
M1 M3
7 8 9 10
5
L N
PE
123 4 6
压缩机
连接控
制面板
220V
E06 电路板
AC12V
M2
温度探头
1 2 345
10.1 FCC225/320,230V AC/50 Hz电路图:

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11. 常见故障分析及解决措施
故障现象 故障原因 检查方法 解决方法
电源电压不正常 检查电源电压是否符合该机组
的标准 调整供电电源 电压及输出的容量
接触器故障 检查接触器线圈是否烧坏 更换接触器
温控器失灵 把温控器温度值调到最低.然后
检查触点是否接通
如果不能接通,进行更换;如果能接通
可调整温控器的精准度
过热保护器烧坏 检查是否接通 不能接通进行更换
电容老化 检查电容是否有充放电能力 更换电容
控制板出现
程序错误
通过观察显示板可以判断出
(显示错乱代码) 查明原因后更换
冷凝器过脏 检查冷凝器内部铜管是否太脏 清洗冷凝器
系统内有不
凝结的气体 检查排气温度及压力是否正常 重新抽真空 加注冷媒
冷凝风机过滤网
脏堵 检查过滤网是否堵塞 清洗过滤网
冷凝风机不启动 检查风机(电容)是否烧坏 进行更换
系统冷媒泄漏 对系统进行检漏 检漏 ,补漏 ,保压, 抽真空, 充注
冷媒后试机(请与厂家联系)
系统脏堵 检查干燥过滤器外部是否结冰 更换干燥过滤器 保压 抽真空 充注冷媒
后试机请与厂家联系)
断路器故障
(使用不当) 检查断路器容量是否使用过小 选用的断路器容量电流要比空调的运行
电流大1.5倍
压缩机故障 检查压缩机绕组绝缘 对地绝缘
是否损坏
冷凝风机故障
蒸发风机故障 检查风机绕组绝缘 对地绝缘
是否损坏
冷凝风机过滤网
脏堵 检查过滤网是否堵塞) 清洗过滤网
系统泄漏 1.使用检漏仪进行检漏
2.可用测量电流判断 请与厂家联系
系统脏堵 检查干燥过滤器外部是否结冰 更换干燥过滤器 保压 抽真空 充注冷
媒后试机请与厂家联系)
请与厂家联系
制冷效果差
空调启动
后导致空
气开关跳闸
压缩机
无法启动
系统高
压报警
压缩机及两
风机都正常
运行但不制冷

1. Application
2. Technical data and cutout drawing
3. Assembly
4. Safety and caution
5. Electrical connection
6. Regular operations
7. Working principle
8. Maintenance/care
9. Quality warranty
10. Electrical schematic diagram
11. Common faults and troubleshooting
English
Content
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FCC225/320/225Q/320Qdimension drawing:
2.Technical data and cutout drawing
FCC225P/320P :dimension drawing & cutout drawing
1 5 5
300
560
526
155
55
18 300
264
450 56
530
560
14
4- 9
260
300
560
30
300
53 194
32
560
170
161148
230
35
490
4- 9
Enclosure cooling unit is specifically designed to cool the outdoor cabinet. It protects the inside costly
components sensitive to temperature by dispersing heat load out of the cabinet and is particularly suitable
for the condition under the temperature range from 35℃ to 55℃, with the effect surpassing other heat
dissipation items such as air/air heat exchanger and filter fan unit.
230
278
1.Application
264
530
FCC225Q/320Qcutout drawing:
FCC225/320cutout drawing:
FCC225 FCC225P FCC225Q
30200001 30200049 30200547
FCC320 FCC320P FCC320Q
30200002 30200050 30200548
19 20 19
18 19 18
ID#
Model#
col.
FCC225 FCC320
225
180
R134a/60g
20-55
230
202
50Hz
220-240
253
300x560x155
320
260
R134a/70g
20-55
230
258
50Hz
220-240
322
300x560x155
IP54
55dB(A)
IP54
55dB(A)
cooling output W(L35L35)
cooling output W(L35L50)
refrigerant
Ambient temperatureoC
rated voltageV
rated frequencyHz
Range of operationV
DimensionWxHxDmm
weight Kg
Protection category
Noise level
Fitting
power consumption W(L35L35)
power consumption W(L35L50)
semi-recessed external boltless semi-recessed external boltless

FCC680P/825Pdimension drawing & cutout drawing:
330 173
55
860
818
288
330
292
17
19
860
824
61
330
860
173
330
33
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FCC680/825/680Q/825Qdimension drawing:FCC680Q/825Qcutout drawing:
FCC680/825cutout drawing:
FCC680 FCC680P FCC680Q
30200539 30200543 30200549
FCC825 FCC825P FCC825Q
30200540 30200544 30200550
39 40 39
37 38 37
Model#
col.
FCC680 FCC825
680
540
R134a/300g
20-55
230
331
50Hz
220-240
414
330x860x173
825
620
R134a/360g
20-55
230
368
50Hz
220-240
460
IP54
55dB(A)
IP54
55dB(A)
330x860x173
164
860
265
394
154
82
230 290 230
18373
38
255
56 370 370
824
292
ID#
cooling output W(L35L35)
cooling output W(L35L50)
refrigerant
Ambient temperatureoC
rated voltageV
rated frequencyHz
Range of operationV
DimensionWxHxDmm
weight Kg
Protection category
Noise level
Fitting
power consumption W(L35L35)
power consumption W(L35L50)
semi-recessed external boltless semi-recessed external boltless

FCC1100/1500/ 1100Q/1500Q dimension drawing:
450 185
55
1250
1200
400
450
420
406
1250
1206
590 590
1250
450 185
345 52
1250
540
395
355
180
135
450
37 474 700
180 51
FCC1100P/1500P dimension drawing & cutout drawing:
8
HTTP://WWW.LEIZIG.COM 13
406
1206
FCC1100/1500
cutout drawing:
FCC1100Q/1500Q
cutout drawing:
FCC1100 FCC1100P FCC1100Q
30200541 30200545 30200551
FCC1500 FCC1500P FCC1500Q
30200542 30200546 30200552
55 56 55
53 54 53
Model#
col.
FCC1100 FCC1500
1100
850
R134a/430g
20-55
230
515
50Hz
220-240
644
450x1250x185
1500
1200
R134a/550g
20-55
230
589
50Hz
220-240
736
IP54
58dB(A)
IP54
58dB(A)
450x1250x185
4848
ID#
cooling output W(L35L35)
cooling output W(L35L50)
refrigerant
Ambient temperatureoC
rated voltageV
rated frequencyHz
Range of operationV
DimensionWxHxDmm
weight Kg
Protection category
Noise level
Fitting
power consumption W(L35L35)
power consumption W(L35L50)
semi-recessed external boltless semi-recessed external boltless

Each model of 5FCC series item is devised with 3 fitting methods: semi-recessed compelte external
mounting or boltless with fast clip(ending Q) on request.
4.Safety and caution
Safety warning:cooling unit is a kind of precise electrical device, thus please put in down
gently, do not bottom it up or recline it in transportation and storage.
Cautions:
Clean the filter mesh regularly in the dusty, oily or plush environment; otherwise the
performance may be impacted.
The inlet opening of cooling unit should be located on the top of enclosure.
The temperature surrounding the enclosure shall not exceed 55 degree Celsius and transient
high temperature will not affect the function of cooling unit.
The packaging shows no signs of damage. Oil stains or damaged packaging is an indication
of refrigerant loss and of leakage in the unit system. Any damage to the packaging may be
the cause of subsequent malfunctions.
The protection grade of enclosure must be up to IP54; the condensate may form in case of
any gaps or openings at the enclosure walls.
The distance between 2 units or that away from the wall should not be less than 200 mm.
Air inlet and outlet are not obstructed inside enclosure.Units should only be fitted horizontally
in the specified position. Max. deviation from true Horizontal: 2°
Maintenance and power transmission must be operated by the professional person
To avoid an increase on condensation, a door operated switch should be used which will
switch off the cooling unit when the enclosure door is opened.
The heat loss load from inside components should not exceed the rated cooling capacity of
the unit.
The customer must not modify the design or configuration of cooling unit in any way
◆
◆
◆
◆
◆
◆
◆
◆
◆
◆
◆
5. Electrical connection
The voltage and frequent in use must match the data stated in the rating plate of cooling unit;
Motor protector is suggested for the 3-phase cooling unit; for special voltage, refer to the
assembly instruction for details.。
3.Assembly
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6.1 Key-press guidance
Symbol Role Function
SET Set
For user's parameter setting,check the status by a short
press and press "UP" to look up the set value; When the
display is for the last selection, repress "DOWN" to revert
to the main menu; In the course of set value reading,
another short press of "SET" gets into setting process,
when the setting value is flashing, press "UP" or "DOWN"
to increase or decrease the value, then validate it and
return to lookup status by a short press of “SET” again.
UP Incr.
1、
2、
.In setting interface, a short press makes the value
increased progressively 1 by 1 and a long press gets the
rapid increment.
In the interface of fault lookup, press "UP" to leaf
through the defaults with the system
6. Regular operations
See the control panel at above picture
Panel indicator lights
# COM # Communicating indicator light
# ALM # Fault indicator light
Keys
Set key
Increase(Incr.) or turn up Key
Decrease(Decr.) or turn down key
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UP+SET —
SET+UP+DOWN Self
diagnosis
Enter into the self-diagnosis by pressing the combined
keys in the period of startup countdown
No press The system will return to the main interface if there is
no operation on the keys in 30 s and no faults found
—
DOWN Decr.
In setting interface,a short press makes the value decreased
progressively 1 by 1 and a long press it rapidly diminished
SET+DOWN Enter into the self-diagnosis by pressing the combined
keys in the period of startup countdown.
—
6.2 Display guidance
The 3 Nixie tubes on the control panel indicates the present indoor temperature,within a
range from-20℃~99.9℃
Use condition Display
Countdown of
electrification
The 3 Nixie tubes of a range from 999 to 000 count down by 10s to
reveal the unit is being electrified, then it enters into the display of
current "Cabinet inside temperature"; if the remote control points are
short circuited, it will show the unit is closing down.
Setting In the setting interface, the 1st Nixie tube displays the setting
codes, the next 2 digits of tubes display the current values to set.
Fault The fault interface pops up and displays the first fault code.
6.3 Parameter setting
1. In the temperature readout interface, press "SET"
toget the cooling temperature setting option as right
picture shows, the default value is 35, repress
once "SET", the first letter flickers to denote the
setting is available, then adjust the value (ranging
from 28 to 40) through the key “UP” or “DOWN”;
press “SET” another time to quit the value
adjustment.
A lookup of default: press the combined keys once to look up
the fault; if there is no fault, the interface displays" "; if
the malfunction occurs, the Nixie tubes read the 1st code; in
case of many defaults,press "UP" orderly to check all the
breakdowns ; then press "UP+SET" to quit the and turn to the
main interface.
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6.4 Failure alarm
In accordance with the system setting, the point in
N.C. indicates the failure point; If the return circuit can
be formed between the DCOM(common port) of the
plug and the point, it will run in no problem; on the
contrary, the disconnection means failure. For the
points in no use, short-circuit it to avoid the unwanted alarms. In case of fault, the indicator
light is on and there is alarm from the speaker. Press “UP” to mute it.
2. In the temperature readout interface, press "SET" and
subsequently “DOWN” to get the setting option of the
cooling return differential, the default value is 3,
repress once "SET", the first letter flickers to denote
the setting is available, then adjust the value (ranging
from 1 to 9) through the key “UP” or “DOWN”; Press
“SET” another time to quit the value adjustment
N.B.:If no any manipulation occurs within 10 seconds, it will quit the current setting
and get back to the temperature display interface.
Fault
Inside enclosure tempe
-rature probe fault
Code Delay
0 s 2 s
Duration Reset Remarks
Alarm,Compressor
halt
Auto.
High temperature Alert 0 s 2 sAuto.
N.B.:
compressor is larger than the shortest halt time. In case of communication malfunction,he display
will keep in memory the interface before the fault.
The compressor will restart in 1 min. delay after the reset of compressor and the downtime of
Heat pipe temperature
probe fault
Heat pipe over
-temperature
0 s 2 sAuto.
0 s 2 sAuto.
6.5 Power on/off
In event the interior fan starting condition is met after powering on, the system will
automatically delay for 5~15s(random value) to activate the fan; in event the compressor
starting condition is met, the fan will delay for 10 s to activate the compressor
6.6 Self-diagnosis
Press the combined keys for Self-diagnosis during the starting countdown and the relay will
connect/disconnect to power for 30 s, then enter into the normal operation process.
Self-diagnosis sequence:
1、In the starting countdown step,press "SET"+"UP"+"DOWN" keys to get the system
selfchecking and activate the exterior fan.;
2、30 s later after interior fan operation, start compressor;
3、30 s later, stop compressor and start exterior fan;
4、30 s later,stop fan,start the fault relay;
5、30 s later,stop all,quit the self-diagnosis,enter the temperature control and activate
the relative devices.
Internal fan is always on in self-diagnosis
!
Alarm,Compressor
halt
Alarm,Compressor
halt
Alarm
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7. Working principle
The cooling unit applies the theory of phase-transition cooling this way: the gaseous refrigerant
is expelled out of the compressor,in high temperature and high pressure,enters into
condenser,cooled forcibly and liquefied in modest temperature and still high pressure, then
goes through the throttling devices such as capillary or expansion valve to become liquid in
lower temperature and lower pressure when it flows into evaporator, afterwards, it returns
to the condenser by phasechange absorbing the heat of inside enclosure. This reciprocating
circulation guarantees the reliable working environment.
8. Maintenance/care
As the maintenance-free cooling device, the unit has been strictly tested before ex.
Factory and all performance passed the international certification. The fan of ball bearing
has a lifespan up to 30,000 hour. The filter mesh is recommended to use in case of
dense dusts and clean at twice every month.
Turn off the power if the cooling unit is kept long not for use.
The power must be switched off in the period of maintenance/care.
9. Quality warranty
All the cooling units in normal use (Refer to 4. Safety notes) shall be granted with a
year of free maintenance. During the valid warranty, the faulty unit will be returned to
factory or handled on the site for repairs.
The product is only limited to the purpose of cooling down the enclosure; otherwise
Leizig shall take on no responsibility for the losses caused by any misconnection to
power or incorrect operations (see regular operations). Electrical circuit drawings.
HTTP://WWW.LEIZIG.COM 18
Low pressure
liquid
Low pressure
bapor
Temperature
sensing pack
Expasion valve/capillary
High pressrue
liquid
High pressrue
vapor
Evaporator
Compressor
Condenser
This manual suits for next models
35
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