保定空压机设备销售公司

冷冻式空气干燥机常见故障的判断及处理

Judgement and treatment of common faults of refrigerated air dryer

高压跳机

High pressure jumper

故障情形：机台跳机后故障批示灯亮，待高压压力下降后故障批示灯熄灭，机台开机照常运转。

Fault situation: after the machine jumps, the fault indicator light is on. After the high pressure drop, the fault indicating lamp is extinguished, and the machine starts running as usual.

原因一、机器场所的环境温度过高超过40℃。

First, the ambient temperature of machine premises is too high to exceed 40 C.

1、机房在厂房的最顶层阳光直照，通风不良。

1, the computer room at the top floor of the factory is straight sunlight and poorly ventilated.

2、机房太小又没有排风扇，通风不良。

2, the engine room is too small and no fan, ventilation is bad.

3、空压机没安装排气管，散出的热气在机房里导致环境温度升高。

3. No exhaust pipe is installed in the air compressor. The heat released from the air will cause the environmental temperature to rise in the engine room.

针对以上问题建议厂家改善机房的散热。

In view of the above problems, it is suggested that manufacturers improve the heat dissipation of the computer room.

原因二、冷凝器、冷却器出现脏堵

Cause two, the condenser and the cooler are dirty

1、冷凝器灰尘、杂质很多。（风冷型）。

1, the condenser dust, a lot of impurities. (air - cooled).

2、冷却水管路没有装Y形过滤器，水质差造成冷凝器出入口无温差（水冷型）。

2, the cooling water pipeline is not equipped with Y shape filter, resulting in poor temperature difference between the inlet and outlet of condenser (water cooled type).

3、冷却水塔损坏。

3. The cooling water tower is damaged.

针对以上问题教导用户如何清理冷凝器。

To solve the above problems, how to clean the condenser is instructed.

原因三、机器的摆放

Cause three, machine placement

1、机台放置场所离周围墙壁距离太近(不小于50cm)。

1. The location of the machine is too close to the surrounding walls (not less than 50cm).

2、机台前后摆放（风冷式）。

2, front and rear of the machine set (air cooling type).

3、机台放置场所有热源（太阳直照或空压机排放热气）。

3. All the heat sources are placed on the platform.

4、机台放置场所灰尘较多。

4, there are more dust in the place where the machine is placed.

针对以上问题建议用户改善机台放置位置和场所。

In view of the above problems, it is suggested that users improve the location and location of the machine.

原因四、冷凝器风扇马达不转

Cause four. The condenser's fan motor does not turn

1、风扇马达启动电容击穿。

1, the fan motor starts the capacitance breakdown.

2、风扇马达轴承卡死。

2. The bearing of the fan motor is dead.

3、风扇马达线圈烧毁。

3. The coil of the fan motor is burned down.

原因五、空压机马力数(空气处理量)与冷冻式干燥不匹配

Reason five, air compressor horsepower number (air treatment volume) and frozen drying do not match.

原因六、冷冻系统中混有压缩空气。

Cause six, the refrigeration system is mixed with compressed air.

机台电流过高跳机

Overcurrent jumper

故障情形：机台跳机故障指示灯指示，机台无法开机。需手动复位过载电驿后，方可再启动。

Fault condition: the machine jumper fault indicator indicates that the machine is unable to start. After the overload relay is manually reset, it can be activated again.

原因一、现场用电电压不稳定导致机台内压缩机、风扇电机电流波动较大。

First, the unstable voltage on the site caused the fluctuation of the compressor and fan motor current.

原因二、压缩机内部卡死，导致启动电流过大。

Cause two. The internal clamping of the compressor causes the starting current to be too large.

原因三、压缩机启动电容损坏。

Cause three, the compressor startup capacitance damage.

原因四、压缩机过热保护损坏。

Cause four, the compressor overheating protection damage.

原因五、配电电线松动，造成电线接触不良引起电流过大。

Five, loose distribution lines, resulting in excessive wire contact caused by excessive current.

原因六、机台电路出现短路。

Cause six, the circuit of the machine is short circuited.

原因七、交流接触器触点接触不良，导致电流过高。

Reason seven, contact contacts of AC contactors are poor, resulting in excessive current.

原因八、过载电驿电流设定过低或损坏。

Reason eight, overload relay setting is too low or damaged.

原因九、压缩机开机和关机过于频繁

Cause nine, compressor opening and shutdown are too frequent

除水效果不良

Poor water effect

故障情形：用气现场有水份

Failure case: gas field with water

原因一、自动排水阀不排水

Cause one, automatic drainage valve undrained

1、 自动排水阀入口滤网堵塞

1. Blocking of the inlet filter of automatic drainage valve

2、 自动排水阀浮球破裂

2. Rupture of floating ball of automatic drainage valve

3、 自动排水阀排水杆卡死

3. Die of automatic drain valve

4、 自动排水阀使用压力过高

4. The pressure of the automatic drain valve is too high

5、 自动排水阀球阀末打开

5. The end of the ball valve of the automatic drainage valve

6、 电子排水阀电磁线圈烧毁

6, electronic drain valve electromagnetic coil burned

针对以上问题点教导用户如何清洗和保养自动排水阀

To teach users how to clean and maintain automatic drain valve.

原因二、干燥机蒸发温度过高

Cause two, the evaporation temperature of the dryer is too high

1、 干燥机入口温度过高（超过机器标示的最高入口温度）

1. The inlet temperature of the dryer is too high (exceeding the maximum inlet temperature marked by the machine).

2、 机房环境温度过高、散热器冷凝器堵塞无清洗

2, the room temperature is too high, the condenser of the radiator is clogged and there is no cleaning.

3、 热气旁路阀调节过大

3. Oversize of hot gas bypass valve

4、 空压机连续运转但压力低、现场用气量过大

4. The air compressor runs continuously, but the pressure is low and the gas consumption is too high.

原因三、干燥机蒸发温度过低

Cause three, the evaporation temperature of the dryer is too low

1、 冷冻系统制冷剂泄漏

1. Refrigeration system refrigerant leakage

2、 干燥过滤器堵塞

2. The clogging of the dry filter

3、 膨胀阀堵塞或损坏

3. The expansion valve is blocked or damaged

4、 防冻开关损坏风扇连续运转

4, antifreeze switch damage fan continuous operation

原因四、空压机马力与冷干机不匹配

Reason four, air compressor horsepower and cold dry machine do not match

原因五、干燥机空气管路中旁路阀没关紧

Cause five. The bypass valve in the dryer air line is not tight.

原因六、开机顺序出错，应该先开干燥机运转5分钟后再开压机

Reason six, boot sequence error, should first open the drier for 5 minutes before opening the press.

注：在干燥机运转正常的情况下，遇到喷涂中出现工件有凹凸点如何判断

Note: how to judge if there are bumps in the workpiece when the dryer is running normally?

1、 压缩空气中是否含油 （可现场检查）

1, whether the compressed air contains oil (on-site inspection)

2、 喷涂的原材料是否干净 （可现场试验）

2. Is the raw material clean?

3、 喷枪是否有问题 （可现场操作）

3. Whether there is a problem with the spray gun (on the spot)

4、 清洗喷枪的清洗剂是否的问题 （可现场操作）

4, cleaning the spray gun cleaning agent is the problem (can be on-site operation)

5、 现场喷漆人员的操作是否有问题 （可向用户了解）

5. Is there any problem with the operation of the painting staff?

6、 工件出现凹凸点是否在固定时间出现 （可向用户查询）

6. Does the bump appear in the fixed time?

7、 现场环境是否有问题 （可现场试验）

7. Is there any problem in the site?

低压跳机

Low voltage hopper

故障情形：机台跳机后故障指示灯会指示，机台无法开机。

Fault condition: after the machine jumps, the fault indicating lamp will indicate that the machine is unable to start.

原因一、机台制冷系统中制冷剂泄漏有分外部漏和内部漏

First, the refrigerant leakage in the refrigeration system of the machine has partial leakage and internal leakage.

Ⅰ、外部漏可用目测或肥皂水检查（主要检查以下几点）

I can use visual inspection or soapy water to check the external leakage.

1、 制冷配件（压力表、压力开关、角阀、膨胀阀、充灌阀、 冷媒释荷阀、）

1. Refrigeration parts (pressure gauge, pressure switch, angle valve, expansion valve, filling valve, refrigerant release valve, etc.)

2、 制冷系统管路（冷凝器出入口焊接处、铜管弯头三通、毛细管焊接处漏、冷冻系统铜管各个焊接点）

2, refrigeration system piping (condenser inlet and outlet welding, copper pipe elbow three links, capillary welding leakage, freezing system copper pipe each welding point)

Ⅱ、内部漏可用压缩空气检测或分段检测法

II. Internal leakage can be detected by compressed air or segmented.

压缩空气检测法

Compressed air detection method

1、 打开空气管路的旁路阀，关闭干燥机的出入口阀门

1. Turn on the bypass valve of the air pipe and close the inlet and outlet valve of the dryer.

2、 将冷冻系统的压力全部放完，再将干燥机入口阀门打开使压缩空气进入干燥机，如果蒸发器或二次冷凝器里面有漏点，冷冻系统的压力表就会有压力指示，最终指示的压力会跟压缩空气的压力一样高。

2, complete the pressure of the freezing system, and then open the dryer entrance valve to make the compressed air enter the dryer. If there is a leak in the evaporator or the two condenser, the pressure gauge of the freezing system will have pressure indication, and the pressure will be as high as the compression of the compressed air.

分段检测法

Subsection detection

1、 蒸发器和冷凝器出入口铜管割段，分别对蒸发器和冷凝器进行保压检漏。

1, the evaporator and condenser inlet and outlet copper tube cut section, respectively for evaporator and condenser to maintain pressure leak detection.

原因二、低压保护压力设定过高

Cause two, low pressure protection pressure set too high

原因三、冷冻系统制冷剂出现阻塞

Cause three. Blocking of refrigerant refrigerants

原因四、环境温度过低

Cause four, low ambient temperature

原因五、制冷剂太少

Cause five, too little refrigerant

机台出入口出现压力降

Pressure drop in the entrance of the machine

故障情形：冷冻式干燥机入口压力与出口压力有压力差

Fault condition: there is pressure difference between inlet pressure and outlet pressure of refrigerating drier.

原因一、干燥机蒸发温度过低造成蒸发器内部结冰

The first reason is that the evaporating temperature of the dryer is too low to cause ice inside the evaporator.

原因二、压

Cause two, pressure