DENAIR DA Series Operation Manual

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DA Series

Safety Precautions..............................................................................................................1

1.1

Electrical Safety...................................................................................................................... 1

1.2

Driving Components..............................................................................................................1

1.3

High Temperature and High Pressure.............................................................................. 1

1.4

Unit Drainage...........................................................................................................................2

Inspection and Handling...................................................................................................2

2.1

Product Warranty of Compressors....................................................................................2

2.2

Check of Specifications and Model...................................................................................2

2.3

Inspection of Accessories and Appearance................................................................... 3

2.4

Handling Precautions............................................................................................................3

Installation..............................................................................................................................4

3.1

Environment Requirements.................................................................................................4

3.2

Installation Location Requirements.................................................................................. 5

3.3

Ventilation and Cooling Requirements.............................................................................5

3.4

Selection Requirements for Air Rate of Ventilating fans............................................. 6

3.5

Warning..................................................................................................................................... 7

3.6

Suggestions for Pipeline...................................................................................................... 8

3.7

Electric Appliances Installation Precautions and Control System......................... 11

Introduction to the System............................................................................................14

4.1

Overall System......................................................................................................................14

4.2

Composition of the Compressor Unit.............................................................................14

4.3

Lubricating Oil System....................................................................................................... 15

4.4

Oil-gas Separation System................................................................................................ 15

Operation of Controller.................................................................................................. 16

5.1

Key Description.................................................................................................................... 16

5.2

Contents of Controller........................................................................................................ 16

5.3

Contents of User Parameter..............................................................................................19

5.4

Schematic Wiring Diagram................................................................................................ 20

5.5

Control Operation................................................................................................................ 21

5.6

Warnings and Prompts....................................................................................................... 22

5.7

Safety Protection..................................................................................................................23

Function Description of System Components...................................................... 24

6.1

Air Filter.................................................................................................................................. 24

6.2

Inlet Valve............................................................................................................................... 24

6.3

Oil-gas Barrel........................................................................................................................ 24

6.4

Oil Separator..........................................................................................................................25

6.5

Safety Valve........................................................................................................................... 25

6.6

Pressure Maintenance Valve.............................................................................................25

Contents

Operation Manual

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Summary of Contents for DENAIR DA Series

Page 1: Table Of Contents
DA Series Operation Manual Contents Safety Precautions......................1 Electrical Safety........................1 Driving Components......................1 High Temperature and High Pressure................1 Unit Drainage...........................2 Inspection and Handling....................2 Product Warranty of Compressors..................2 Check of Specifications and Model...................2 Inspection of Accessories and Appearance..............3 Handling Precautions......................3 Installation..........................4...
Page 2 DA Series Operation Manual Rear Cooler..........................25 Oil Cooler..........................25 Oil Filter..........................26 6.10 Exhaust Temperature Sensor..................26 6.11 Pressure Sensor....................... 26 Maintenance.........................26 Inspection and Update of Belt and Pulley..............26 Air Filter..........................27 Lubrication of Motor Bearing....................28 Compressor Bearing......................29 Air Compressor Lubricating Oil..................29 Oil Separator..........................29...
Page 3: Safety Precautions
DA Series Operation Manual 1. Safety Precautions Please carefully read this manual and operate based on the detailed instructions given in the manual before installing and using the air compressor of the Company to avoid hazardous events and prevent machines being damaged.
Page 4: Unit Drainage
Denair, or the maintenance conduct by other person other than personnel of our company and servicemen of service agency appointed by Denair, shall be excluded from the product warranty.
Page 5: Inspection Of Accessories And Appearance
2.3 Inspection of Accessories and Appearance Please check whether spare and accessory parts are all in readiness after receiving the air compressor. If there is any quality problem, please contact us immediately. All Denair air compressors shall be attached with the followings: One copy of operation manual;...
Page 6: Installation
DA Series Operation Manual Fig. 2.2 Notice: it is not allowable to place any items on the cooler over the metal plate, and the cooler shall not covered to avoid tripping resulting from high temperature of the unit. 3. Installation Please carefully read this chapter before installation to ensure the proper installation and reliable operation of the air compressor.
Page 7: Installation Location Requirements
DA Series Operation Manual The relative humidity shall be less than 95%. Fig. 3.1 3.2 Installation Location Requirements The screw air compressor can be installed on any floor slab which may withstand the weight of the air compressor without any special foundation, where the floor is smooth and horizontal. The air compressor shall be fixed with foundation bolts;...
Page 8: Selection Requirements For Air Rate Of Ventilating Fans
DA Series Operation Manual Fig. 3.2 Note: Fig. A: when the exhaust duct is not used for ventilation, refer to Table 3.1 Ventilation Rate (1) for the recommended exhaust air rate of ventilating fans, and please install the ventilating fans as high as possible.
Page 9: Warning
DA Series Operation Manual Warning The compressed air and electricity are dangerous. Prior to any operation on the air compressor, it shall be ensured that: The power has been cut off with the switch locked and the notice plate hung;...
Page 10: Suggestions For Pipeline
DA Series Operation Manual of Labor of the People’s Republic of China. The indication stickers on the control panel and this operation manual shall be carefully read according to each standard operation before starting up the air compressor. (10) Various cover plates and casings shall be re-installed after completing daily maintenance.
Page 11 1℃, the regenerative dryer shall be used. Please contact local branch or appointed distributor of Denair, which may help you choose the proper dryer. Note: the rotary air compressor cannot be connected to a reciprocating air compressor system without pulsation isolation device (e.g.
Page 12 See standard configuration of the general air system in the architecture of Fig. below. Please contact Denair for different air qualities and their respective detailed configuration. Fig. 3.7...
Page 13: Electric Appliances Installation Precautions And Control System
DA Series Operation Manual The numbers in the Fig. respectively indicate the following meanings: 1. Air receiver 5. Oil filter 2. Pre-filter 6. Adsorption drier 3. Refrigerated dryer 7. Ultra-filter 4. Ultra-filter 8. Air receiver 3.7 Electric Appliances Installation Precautions and Control System 3.7.1 Regulations on electric appliances installation preparatory measures...
Page 14 DA Series Operation Manual the sectional area of the power line is too large, it can be replaced with two or more power lines. Each power line shall be three-phase balanced while using multiple power lines; otherwise it may result in overheating cable and unbalanced synthesized voltage. The input supply voltage shall be kept within ±10 ％...
Page 15 DA Series Operation Manual (1) Start-up of the electromotor (pressure drop or Y running) The inlet valve is fully cut off, the release valve is fully opened and the release solenoid valve is closed during this period, meanwhile the inlet side is of high vacuum and the lubricating oil required by the compression chamber and bearings is ensured by the difference between the vacuum in the compression chamber and the atmospheric pressure in oil-gas barrel.
Page 16: Introduction To The System
DA Series Operation Manual immediately shut down the motor. Meanwhile the inlet valve is closed, the release valve will be fully opened and the pressure maintenance valve will be closed and the pressure in the oil-gas barrel will be exhausted to zero. Only when there are abnormalities during the running of the unit, it is allowed to press the emergency shutdown, otherwise it may easily cause the system failure.
Page 17: Lubricating Oil System
DA Series Operation Manual After-cooler assembly Oil-gas barrel The air enters the air compressor and flows through the inlet filter and the inlet valve. The compression of the screw air compressor is generated by the meshing of a pair of helical rotors (one is male and the other is female), which are respectively installed on two parallel shafts and in the high-strength cast iron casing.
Page 18: Operation Of Controller
5.2 Contents of Controller 5.2.1 State and display The following interface will display when the unit is powered on. The following interface will display five seconds later: Welcome to use Denair Screw Air Compressor Exhaust temperature:** ℃ Supply pressure: 0.00MPa...
Page 19 DA Series Operation Manual Please press “▼” and enter the following menu to select an interface: Operation parameter User parameter Manufacturer parameter 5.2.2 View of operation parameter Please press “▲” or “▼” and move the black scrollbar behind the “operation parameter” menu and the sub-menu will pop up by pressing the key “Set”:...
Page 20 DA Series Operation Manual Pressure/temperature preset Start-stop delay preset Operation mode preset Linkage parameter preset Upper pressure limit 0.0MPa Repress the key “Right” to pop up: Lower pressure limit 0.0MPa Fan start temperature 00℃ Fan stop temperature 00℃ If not continue pressing the key “Right”, the use parameters can be reviewed. Repress “Right” to pop up the following interface which requires inputting the user password: If not continue pressing the enter key, the use parameters can be reviewed.
Page 21: Contents Of User Parameter
DA Series Operation Manual 5.3 Contents of User Parameter First menu Secondary menu Function Upper pressure limit Unloading pressure Lower pressure limit Loading pressure startup P r e s s u r e / t e m p e r a t u r e p r e s e t...
Page 22: Schematic Wiring Diagram
DA Series Operation Manual The loading/unloading can be achieved only by the keys in Loading mode manual status. Communication mode The communication does not work when disabled. Communication coding Correspondence address Linkage operation as a “host” or the host of the “slave” to Linkage status control the slave.
Page 23: Control Operation
DA Series Operation Manual 5.5 Control Operation 5.5.1 Press key “START” to start: (Y—△ start). The main motor cannot start by pressing key “START” for there are five minutes for self-inspection after the controller is powered on. Press key “START” to start the main motor after self-inspection. The startup...
Page 24: Warnings And Prompts
DA Series Operation Manual When the motor starts up to △ state, the draining solenoid valves is powered on and the air compressor begins to load while the pressure of the oil-gas barrel begins to increase after delaying for a while. When the air pressure increases above the set upper pressure limit (unloading pressure), the draining solenoid valves are powered off and the air compressor begins to run in empty.
Page 25: Safety Protection
DA Series Operation Manual Service time of lubricating oil Service life Alarm without shutdown expired lubricating oil Service time of belt expired Service life of belt Alarm without shutdown Low ambient temperature Ambient temperature Alarm without shutdown too low High ambient temperature...
Page 26: Function Description Of System Components
In case that the air inlet filter is blocked, the air intake will decrease, thus affecting the air supply. Denair service staff will suggest changing a new product based on the inlet dust and the service time displayed on the controller at every onsite inspection.
Page 27: Oil Separator
“oil throwing” phenomenon in case of blocking or poor filtration efficiency. Denair service staff will suggest changing a new product based on the working environment, inlet dust, quality of lubricating oil and the total time used displayed on the controller at every onsite inspection. With the controller set to the longest service time, when the controller displays a warning message, the oil separator of the air compressor unit shall be replaced with a new one.
Page 28: Oil Filter
As a paper filter, the oil filter is used to remove the impurities in the oil to improve the lubrication effect and reduce its damage to the compressor bearing and some parts. The Denair service staff will measure the pressure valve in front and at the back of the oil filter, observe the quality of the lubricating oil at every onsite inspection.
Page 29: Air Filter
DA Series Operation Manual edge of the other pulley and the ruler, the “A” shall be less than 1mm.In case that the horizontal plane between the side pulleys of the motor and the body fails to meet the standard requirements, the horizontal plane can be adjusted by adjusting the position of the fixing bolt.
Page 30: Lubrication Of Motor Bearing
DA Series Operation Manual follows: dismount the fixing bolt of the air inlet filter and replace with a new product. Note that the sealing gasket of the inlet filter shall stick close to the permanent seat. 7.3 Lubrication of Motor Bearing The oil filling bearing shall be periodically filled with lubricating oil according to the Instructions for use of the motor or the following table.
Page 31: Compressor Bearing
Denair. When changing the oil, the old oil in the system shall be completely removed, otherwise the service time of the new oil may be shortened. The oil filter and oil separator shall also be changed when changing the lubricating oil.
Page 32: Oil Return Pipeline
When maintaining or dismounting the parts, the parts shall be relocked in case of any loose ones and resealed if necessary. The Denair service staff will suggest whether to buy a repair kit as appropriate to replace the necessary accessories and hose.
Page 33: Safety Valve
The air compressor shall be periodically tested and cleaned as per the parts in the Air Compressor Periodic Maintenance Table after running for a while. The Denair service staff and the qualified service staff of the specified regional maintainer will provide periodic inspection...
Page 34: Safety Protection And Warning Device
If the motor is found overloaded in the process of running, please contact maintenance supplies of Denair or specified region, go for inspection and clarify the reason of overload, otherwise the burnout of the motor will cause a lot of troubles for in-situ air requirements and maintenance fees.
Page 35: Setting And Description Of Other Protection And Warning
DA Series Operation Manual 8.3 Setting and Description of Other Protection and Warning See the introduction given in Section 5.6 and 5.7 of this manual. 8.4 Failure Causes and Troubleshooting Failure Cause Troubleshooting Check the specification of the control voltage, fuse and...
Page 36 DA Series Operation Manual Failure Cause Troubleshooting Belt slipping/ readjust tension or replace the belt Drive anomalies Poor alignment of pulley/ recalibrate the alignment Bearing of compressor body Reasons for damage shall be identified while return to damaged factory for change.
Page 37: Annex I: Table Of Cycles For Periodic Maintenance Of Air Compressor
DA Series Operation Manual Annex I: Table of Cycles for Periodic Maintenance of Air Compressor ○ Clean ◎ Adjust and check ● Replace 6000 1500 3000 12000 18000 30000 hour hours hours hours hours hours hours Item Work content Every...
Page 38 4,000 hours. In normal working condition, when original Denair oil products is used away from dust with ambient temperature lower than 45℃ , the normal service time of oil filter and inlet filter is 3,000 hours and that of oil separator is 3,000~6,000 hours.

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