冷干机英文说明书

User’s Manual

Maintenance

I. Foreword:

This manual mainly instructs you on how to use the equipment properly. Its purpose is to prolong the service life and diminish operational failure, so as to guarantee the compressed air quality. It also gives relevant information on the equipment for reference. So please read the manual carefully before use, and take operation and maintenance according to the instructions for fear of equipment breakdown.

II. Functions：

The key function of the cooling-type compressed air freeze dryer is to remove the

moisture of compressed air. With a cold media heat exchanger (evaporator), it can drop the compressed air temperature to 10℃ and condense the moisture or water drops in the compressed air. Then it separates the air from water drops with a separator. Then the water drops are discharged from the system by an automatic drainer, which puts the pre-cooling process. Under normal situation, the water content of the precooled compressed air is about 0.59g/m3, and the dewatering rate is up to 93%. The user can select the right model or add filters according to the actual condition.

III. High Efficiency from the Excellent Jiasheng Design：

The low energy consumption and low pressure drops enable the lowest operating cost, so it is energy-efficient. The large ‘Gas-to-Gas’ heat exchanger can remove half of the heat load in the air, thus to narrow the cooling system and reduce the power consumption to the utmost, which guarantees sufficient cooling and frees the downstream pipeline from

condensation; With large covering, the evaporator enables to cool down the compressed air evenly to dew point temperature. The multi-channel design of the coolant can make the best use of the available cooling capacity and free the evaporator from frost.

IV. Cold Media System Flow：

Compressed by the cold-media compressor, the cold media will turn into high-pressure

and high-temperature gas. After radiated by the air-cooling condenser, it will be condensed to liquefaction. And then the moisture and impurity are removed from its pipeline with a dry filter. And then the high-pressure liquid cold media will go through the capillary throttle before turning into low-pressure and low-temperature liquid to enter the evaporator. Then it absorbs the heat from the compressed air, and is gasified into the low-temperature gaseous cold media, and flows back to the compressor through the liquid-gas separator, which puts

the refrigeration cycle to an end.

V. Installation Instructions： Location

5.1 Choose a cool and draughty place as the best location for installation. 5.2 Installation of the machines the ambient temperature is limited to 35℃

5.3 Do not install it outdoors, in a damp and dusty place, or in a corrosive and polluted place. 5.4 The location shall be one meter away from the wall and two meters away from other

machines, which facilitates cleaning and maintenance. 5.5 Install it horizontally to facilitate drainage.

Wiring

5.6 Install a dedicated switch beside the power supply of the dryer for protection. For more

information please refer to relevant instruction manuals.

5.7 The supply voltage cannot exceed the rated voltage.（Label specification±5%） 5.8 The power cord’s specifications depend on the current and the length of wires. 5.9 Do not share the protection switch with any other equipment. 5.10 Connect the ground wire properly.

III. Operations：

6.1 Verify that the power supply is under normal voltage (label specification±5%). 6.2 Verify that the environmental temperature is normal.

6.3 Verify that the compressed air has not yet entered the dryer. (Stop the air compressor from

running, or fasten the valves, and turn on the air bypass valve.)

6.4 Verify that the cold media meter is under normal pressure. (Before running, the cold

media pressure must be kept around 7~11kgf/cm2，and not less than 6.0kgf/cm2 in winters).

6.5 Verify that the cooling water intake is under normal pressure and humidity. (Hydraulic

pressure: 2~4kgf/cm2, water temperature: max. 35°C)

6.6 Verify that the exhaust rate of the air compressor matches the processing capacity of the freeze dryer.

During Operation

6.7 Turn on the power, and the dryer will begin to work.

6.8 Verify that the dryer is under normal working voltage.（See label.）

6.9 Verify that the cooling water intake/outtake is under normal temperature difference.（5~10°C）

6.10 Verify that the cooler’s fan motor is running well.

6.11 After ten minutes of running, let the compressed air in the dryer.（Start up the air

compressor or open the valves slowly and close the air bypass valve.） 6.12 Check whether there is air leakage.

6.13 Verify that the intake compressed air temperature is normal.（High temperature:

WCD≤80°C，Low temperature: WAD≤40°C）

6.14 Verify that the intake compressed air is under normal pressure.（See label.）

6.15 Verify that the passageway of the dryer is under normal temperature difference.

（Temperature difference:10~30°C）。

6.16 Verify that the cold media is under normal high/low pressure. (High pressure under zero

load：13.5~15.5kgf/cm2, Low pressure：3.6~4.0kgf/cm2)。

6.17 If the water-cooling model is under abnormal high pressure, please adjust the

water-regulating valve at the cooling water entrance. （Clockwise to decrease the pressure, and vice versa.）

6.18 After 30 minutes of operation, check whether the drainage system is under control.

（Generally speaking, the high-pressure drainer will drain automatically.）

When all the above items are normal, the operation is under control.

Caution：

IV. Routine Maintenance：

1、Idling should be not more than 30 minutes.

2、Restart the machine 5 minutes after shutdown for fear of damaging the compressor.

7.1 Check the high-pressure drainer every day for fear that it might be jammed to stop

draining；clean it once it is jammed；clean it once a week（depending on the actual situation）.

7.2 Check whether the cooling water is under normal condition every day (Standard hydraulic

pressure: 2—4kgf/cm2，intake water temperature: below 35°C.

7.3 For the water-cooling model，please clean the water filter every three months or when the

high pressure of the cold media is over 17kgf/cm2. If the pressure of the cold media is still off standard, please clean the condenser and the front cooler. 7.4 Open the drainage valve at least twice a day.

7.5 For large models, please coordinate with our company on a thorough maintenance.

VI. Multiple Protection System：

Overcurrent protection；Compressor overheat protection. The multiple protection

system ensures normal operation of the equipment and rest you assured.

IX. Failure and Solutions： State Cause Solutions Make sure whether the power supply is lack of Master power supply protection switch phase, in short circuit or unconnected to ground damaged or jumped off wire, and check whether the power switch is damaged. Abnormal voltage Offline Bad power switch, electromagnetic switch or fuse Overload protector, high-pressure Electric organ protection switch jumped off or in bad condition breakdown Poor operating capacitance Bad compressor Rated voltage allowance on label ±5% Find and repair the offline part Replace it. Reset or replace it. Replace it. Replace it. Abnormal power supply Bad pressure switch Bad fan motor Bad overload protector Poor capacitance of blower Continuous startup Service condition not matched or wrong operation Overload throughput Precooler’s inlet temperature or environmental temperature too high Fin of condenser or cooler jammed Replace it. Replace it. Replace it. Replace it. Restart at an interval of over 5 minutes. Precooler overload Add cooling or improve ventilation. Cleanse it. State Cause Piping valve not fully open Small caliber Too long piping, too many elbows and joints Solutions Open the valve fully. Enlarge the caliber. Redesign the piping system. Redesign the piping system Fasten the bypass valve. Fully open the intake valve of the precooler. Put it horizontally. Cleanse the filter or replace the filter element.

Check the piping. Replace it, check the circuit, and revise the switch. Check or replace the capillary. Fill the leakage or fill cold media. Replace it. Change the desiccant，vacuumize it again, and fill the cold media. Replace it. Replace it. Cleanse it. Abnormal piping system Over two air compressors in parallel operation, not matched well Bypass valve not fastened Air not past dryer Precooler not horizontal Air handling capacity exceeds rated value. Evaporator’s end plate frozen Piping filter jammed Too much air leakage on piping joint Bad pressure switch Capillary jammed Cold media leakage Compressor valve wear and tear Abnormal cooling system Cold media piping jammed Pressure switch failure Breakdown of fan motor of condenser or cooler Abnormal Condenser fin jammed dewatering effect Drainage valve failure or not fully open Abnormal operating pressure Automatic drainer inclined Drainer filter screen jammed Drainpipe jammed Drainpipe higher than automatic drainer Drainage floating ball trouble Replace it or open the valve. Consider to change or update the model. Put it horizontally. Cleanse it. Cleanse it. Reinstall the drainpipe. Replace it.

X. Working Condition： Specification Sheet： Model Air throughput Nm3/min Power supply（A） WCD- 5SG 0.85 1Φ 220V 50HZ 0.2 1.5 250 R3/4 23.5 KG 530 350 450 WCD-10SG 1.5 1Φ 220V 50HZ 0.43 2.9 650 R1 94.5 KG 730 380 910 WCD-20SG 2.5 1Φ 220V 50HZ 0.73 3.6 700 R1 99 KG 730 380 910 WCD-30SG 3.5 1Φ 220V 50HZ 0.92 4.0 950 R1-1/2 103 KG 740 430 940 WCD-50GF 6.5 1Φ 220V 50HZ 1.38 6.8 1100 R1-1/2 123 KG 900 500 1290 WCD-60GF 6.5 1Φ 220V 50HZ 1.38 6.8 1200 R1-1/2 170 KG 1020 610 990 WCD-75GF 8.5 1Φ 220V 50HZ 1.78 8.6 1400 R2 210 KG 1010 610 1290 WCD- 100GF 13.5 WCD- 120GF 13.8 1Φ 1Φ 220V 220V 50HZ 50HZ 2.57 10 1800 R2-1/2 238KG 1200 620 1200 2.57 10 1800 R2-1/2 350KG 1260 610 1350 Compressor power（kw） Working current（A） Cold media capacity（g） filling Air passageway caliber Net weight Place type size(mm)

•Cold media：口R22 口R407 口R410

•Working pressure：Standard: 0.7Mpa，Max:1.0Mpa

•Allowable inlet temperature：≤80°C。

•Environmental temperature：below 35°C

•Dew point temperature：2—10°C。

•Installation environment：draughty and dust-free place

•Extra specifications available upon demand