DT SERIES USER MANUAL - Detroit Air Detroit Air
Contents
1. 595 At the stop status of the unit the date and time can be adjusted by the following steps Press or t to move the black cursor to the parameters you want to modify and then press gt to reach the blinking position Now the button and t change to Page up and Page down button Press button to confirm and save the data after finishing the modification The buttons or t return to black cursor move button and the button gt changes back to its Return function CUSTOMER PARAMETERS Tips The Customer Parameters and the Factory Parameters cannot be modified during operation The Customer Parameters could be read and modified by the same method of running the Parameter Review mentioned above For example to modify the parameter BLOCK UNLOAD PRESSURE the steps will be as follows Press or t to move the black cursor to CUSTOMER PARAMETER menu and then press the CONFIRM button gt to pop up the menu SETP T ON OFF DELAY PRESET OP MODE PRESET BLOCK PARA PRESET Press the CONFIRM button gt again to reach the following menu OADINGP 0 8 UNLOADINGP 0 6MPa FAN STARTT 80 C FAN STOP T 70 DETROIT AIR SCREW COMPRESSOR DT SERIES The CUSTOMER PARAMETERS be read now when the CONFIRM button gt is not pressed now Press the CONFIRM button gt again to pop up the following interface where the pa2. Pressure control or sensor faulty Air end or main rotor jammed Check and adjust unloading pressure value Check and adjust setting current value of main motor or fan motor Check it replace if necessary Check pressure sensor or replace Rotate by with hand repair or replace if necessary Compressor stops automatically due to overheating Insufficient or incorrect type oil Cooling unit soiled or internal blockage Ambient temperature too high 240 C Insufficient cooling air intake Oil filter or thermostatic valve jam Cooling fan faulty Temperature sensor PT100 defective or wire broken Oil pipe leakage Fill oil and ensure oil level is not below the minimum level mark Clean cooling unit Improve ventilation of compressor room Clean and keep air inlet vents open Clean replace if necessary Check and replace if necessary Check and replace if necessary Fasten and seal oil pipe couplings DETROIT AIR SCREW COMPRESSOR Excessive oil consumption Separator element Is defective Excessive oil level Oil return line blockage Working pressure is too low for extended periods lt 0 6MPA Incorrect oil more foam and low viscosity Excess water in internal system due to high humidity climate DT SERIES Check and replace if necessary Drain some oil ensure oil level is not higher than maximum level mark Check and replace one way valve if necessary User should reduce co
3. Special attention should be given to the surface of the intake seal ring located on the piston in the intake tube If there is damage it must be replaced Lubricate all friction surfaces to prolong service life 6 5 Maintenance of minimum pressure valve and temperature control valve 1 Unscrew the lid pay attention to the spring force of the valve 2 Remove the lid 3 Check if there is abrasion on the O ring of the piston If so replace the ring 4 Check if there is abrasion on the seal ring If so replace it 5 Lubricate with high temperature grease Reinstall dp DETROIT AIR SCREW COMPRESSOR DT SERIES Replacing lubricant 1 Stop compressor Power off 2 Connect up the oil discharging pipe open the ball valve and then drain the oil into an oil recycling can 3 Close the oil discharging ball valve then open the oil filling cap and refill with new oil Ensure the oil level is in the center of oil gauge Close the oil filling cap and then check the O ring is in the correct position Start up the compressor Check the oil level after running for a while If oil level is low properly fill it to the correct level Attention If the environment is dusty or hot replace oil more frequently Oil level Maximum oil level oil level is in the center of the oil gauge after the compressor has stopped for 30 minutes Minimum oil level oil level is in the lower part of oil gauge when the compressor is running Adjusting b
4. mI He Ur ae 05 E Install the new separator in reverse procedure Check the length of oil return pipe Refer to the maintenance method for the oil return pipe 9 Tighten bolts with a torque wrench to ensure uniform tightening DETROIT AIR SCREW COMPRESSOR DT SERIES 10 Restart the compressor and let it reach operating temperature shut down the machine Re tighten the bolts of the cover plate of the oil separation cartridge The intake valve solenoid valve and maintenance thereof The Intake control valve is comprised of a valve body valve gate piston cylinder spring and seal ring A solenoid valve is mounted on the side of the unit The system performs the functions of unloading the system noise elimination depressurizing the system etc A small amount of air is output through an outlet in the intake control valve This keeps pressure in the separation element in the range of 0 2 0 3 Mpa and allows for normal cycling of the oil system The pressure sensor and the solenoid valve automatically adjust and control the system loading and unloading as required by air demand To increase the service life of the loading system and its components it is recommended that a pressure vessel be used for storage This will reduce the loading and unloading frequency Periodic maintenance is required to ensure smooth operation of the intake system When maintenance is done parts should be dismantled and checked for wear on friction surfaces
5. 0 times of the set value the overload multiple and action delay time will be accordance with the following table lact l set 21 2 21 3 21 5 21 6 22 0 23 0 Time Para Action time 60 48 24 8 5 1 Temperature Protection When the actual detected temperature is higher than the set temperature the protection activates the activation time 425 The output relay contactor capacity 250V 5 The life time of the contactors 500000 contacts The current display tolerance 1 096 RS 485 communications DETROIT AIR SCREW COMPRESSOR 1 9 j 1 3 5 1 9 13 15 17 19 21 2 4 6 8 10 12 14 16 18 20 22 IN 00 01 02 03 04 05 06 07 08 09 MAMKYA PRO Screw alr TA i y cues 2 gt re comressor 0 01 02 03 04 05 06 07 08 09 E EE controller Unit Structure Size 3 Power LCD PWR 4 Running LCD RUN LCD 5 FAILURE LCD ERR LCD DT SERIES Controller installation The Controller will be installed in the control cabinet There must be enough space around the controller for accessibility when wiring The recommended sizes as below 1 Input LCD CIN 00 01 02 03 04
6. 05 06 and O7 relatively correspond to the input switching value terminals of 20 19 18 17 16 15 14 and 13 2 OutputLCD OUT OO 01 02 03 04 05 06 07 08 and 09 relatively corresponded to the output switching value terminals of 27 28 29 30 31 35 36 37 38 and 39 Diagram 6 Main Control SERIES DETROIT AIR SCREW COMPRESSOR 5 2 1 Basic wiring diagram of the split type electronic Installation 34 PU 35r Load x Controller Ze KH 2 1 31 Sensor for 5 S22 Sensor N gt w 25 24 23 8 N oo S N N K st g 28 SERIES DETROIT AIR SCREW COMPRESSOR 5 2 2 Basic wiring diagram of the integrated type electronic Installation a b c o Wees LOAD VALVE EMPTY VALVE FAULT ALARM 4 JRUN L 4DRAIN WATER f d k T B L a bl tb oe ss ss o lt lt 4 M d 29 uc ub ua Phase 19 1 REMOT GAS P 3213 p EMERGENCY CAS FILTER LACK WATER OIL FILTER 0 FILTER DETROIT AIR SCREW COMPRESSOR DT SERIES Text Display connector terminals There are five connection terminals and one D type dis
7. by competent persons only and that the length and gauge of power cable have been taken into consideration No warranty will be given for electrical damage of any kind Each compressor should be on its own circuit breaker system Make sure that power supply voltage meets the rated working voltage of the compressor before running it Reliable grounding of the compressor set is needed to avoid earth leakage DETROIT AIR SCREW COMPRESSOR DT SERIES Power supply Minimum cross area of power cable Copper wire Model Motor power Pe m Kw mm DT 30 22 x DT 50 37 DT 75 55 2 07 100 75 m DT 10 7 5 6 DT 15 11 DT 20 i Rotational direction of the motor Power must be linked to the compressor correctly to guarantee the correct rotation of the electric motor DETROIT screw air compressors are equipped with a rotation monitoring system The electric motor will not start up unless the phases are in the correct order Commission as follows First switch on power Second loosen the emergency button Third press the stop button The machine will then run a self test Press the start button If the machine runs normally the 3 phases are correct Should the motor stop automatically swap any 2 phases Do not change any wiring on the machine to force a start This may damage your machine 2 6 Machine inspection Inspection of screw air end e Revolve the belt pulley belt drive or shaft couplin
8. in motion or there is pressure in the system Always shut the machine down and ensure no pressure remains in the system On completion of repairs or maintenance work check compressor is properly assembled before restarting jp DETROIT AIR SCREW COMPRESSOR DT SERIES 6 2 Maintenance of air intake filter Open the end cover Take out the filter core Check the condition of intake filter if it is not good replace it Clean out the dust accumulation on the bottom cover Replace it with a new filter core if needed OF a E Replace the end cover OOS NNN d RRR RRA 6 3 Maintenance of oil filter 1 Unscrew the old filter with filter removal pliers 2 Clean the contact surface 3 Lay a thin film of oil on the seal ring of the new filter 4 Tighten the filter by hand until it is tight and the contact surfaces are sealed 5 Check if there is leakage after starting up 6 4 Maintenance of oil separator The method for the external type is the same as the oil filter The method for the built in type is as follow Open the service door Loosen the connector between pipe and minimum pressure valve Loosen the pipeline on the cover of oil separator Make sure it can be reinstalled Loosen the fixing bolts on the oil separator Lift up the cover board slightly and then clean the oil return pipe Take out the oil separator cartridge Replace the oil separator cartridge
9. is no function at the Value value activated input point no light illumination Terminals 27 28 29 30 31 35 36 37 38 Output Switching va and 39 output switching value 0 00709 lights alue activated Data Save Set data and save time PWR blinking once DETROIT AIR SCREW COMPRESSOR 5 5 SYSTEM SAFETY PROTECTION Motor Protection DT SERIES MAM air compressor controller can perform short circuit protection rotor lock protection overload protection phase drop protection and unbalanced voltage protection for the motor Electronic failure Failure Display Possible Causes Short Circuit Local Failure display Host or Fan short circuited Short circuited or the rated current is incorrectly set Local Failure display Host or Fan Rotor Overloaded bearing wear or other unbalance Rotor lock i Locked mechanic failures Local Failure display Host or Fan Overloaded bearing wear or other OVERLOAD PLNS Overloaded mechanic failures Local Failure display Host or Fan Phase Phase drop occurred to power or the Phase Lack Lacking contactors Local Failure display Host or Fan current Contactors are not contacting correctly or Unbalance the motor core is damaged Air Exhaust overheat protection e When the air exhaust temperature is higher than the set limited unload temperature the controller will alarm and s
10. motion Check if the stand by light is on to confirm Tip emergency shut down button is only to be pressed in case of an emergency f 1 jp DETROIT AIR SCREW COMPRESSOR DT SERIES gt MAM KYO2S VW N Attention Please read this manual carefully before operation Only Authorized technicians are may install MAM Please take into consideration the installation environment during the installation to ensure good ventilation and to minimize electromagnetic interference During the wiring procedure please separate the high current and light current lines to reduce electromagnetic interference A surging protector must be installed to the inductive load systems such as AC contactors of the relay outputs Check carefully when wiring the input output before applying power Correct grounding of the ground terminals of the unit Third grounding can improve the anti noise capability of the unit The pre setting of the rating current of the motor is set to the rated current on the name plate X Motor overload factor 1 2 DETROIT AIR SCREW COMPRESSOR DT SERIES Features LCD display Full protection function for the motor against short circuit ceased rotor phase drop overload or unbalance Start Stop and operating control of the motor 5 Control Panel for 18 5 250kw Rotation protection of the air compressor Measuring protecting and controlling temperature vital systems
11. stop until this time STOP DELAY TIME 0010S elapses on shut down Machine can not be restarted before this START DELAY TIME 0100S set time after stopped or over time operation at a load free state STANDBY DELAY TIME 0000S Additional function The continuous draining time during the DRAIN OPEN TIME 0002S automatic drain function The duration the automatic drain will stay DRAIN CLOSE TIME 0010M shut between opening When the remote mode is set both the Machine buttons at machine side and the remote ON OFF MODE side control button can turn the machine on and off l OPERAHON When the manual mode is set the MODE PRESET LOAD MODE Auto Load Unload function can be executed by pressing buttons 2 When this is set to PROHIBIT the COM MODE Prohibited communication function is not available jph DETROIT AIR SCREW COMPRESSOR DT SERIES COM CODE 0255 Communication address Act as Host or Secondary Machine when there are more than one machines BLOCKING MODE HOST Uh running in blocking mode The HOST controls the SECONDARY BLOCKING BLOCKING ON OFF Sequence SWITCHING TIME 9999 Hours I PRESET BLOCK NUMBER 0016 BLOCK LOAD P MPa BLOCK UNLOAD P MPa BLOCK DELAY TIME 00005 0000 Reset time for the duration of oil filter OIL FILTER RESET HOURS changes O A RESET 0000 Reset time for O G Separator changes AIR FIL
12. Automatic adjustment of load rating to balance pressure Optional remote machine side control High Integrity stable reliability and excellent performance Optional interactive independent operation e RS 485 communication interface function 5 1 Basic Operation GAS T 80 C GAS P 0 8MPa STATE NORMAL STOP 0S REMOTE Button Description Figure 1 Start Button Press this button to start the motor OFF Stop Button Press this button to stop the motor M Set Button Press this button to confirm the input data to be saved after modification of data Up button Press this button to move upward during modification of data Press this button to select menu during the menu selection Down Button Press this button to move downward during modification of data Press this button to select menu during the menu selection Cursor Confirm Button This button can be used as cursor during data modification and as a confirm button during menu selection RT Return reset Button Press this button to return to upper level menu during the menu operation Press this button to reset the machine when the unit has stopped in failure DETROIT AIR SCREW COMPRESSOR DT SERIES Status Display and Operation The display interface is as following when POWERED ON Welcome to Screw Air Compressor T
13. Bend Air end pulley Cabinet frame leg Oil Return pipe Separator cartridge Unloading pipe Back shutter panel Air intake valve Removable panel Oil gas separator tank pressure gauge Separator tank exhaust Oil refill cap of separator Cabinet frame leg Air intake pipe joint Minimum pressure valve DETROIT AIR SCREW COMPRESSOR DT SERIES Parts list DT SERIES 7 5 75KW direct drive EHCOOO DETROIT AIR SCREW COMPRESSOR DT SERIES S N Name Quantity S N Name Quantity 1 Front side panel 1 25 Oil level indicator 1 2 Cabinet frame leg 1 26 Separator tank oil filler cap 1 3 Left side panel 1 27 Ball valve 1 4 Electrical control panel 1 28 Air filter element 1 5 Motor frame 1 29 Air filter cover 1 6 Motor vent grid 1 30 Back side panel 1 7 Motor end plate 1 31 Cabinet frame leg 1 8 Oil filter 1 32 Right side panel 1 9 Oil filter mount 1 33 Cabinet frame leg 1 10 Adjustable connector 1 34 Plastic panel mount 1 11 Cooling fan 1 35 LCD control panel 1 12 Cooling fan cage 1 36 Emergency stop switch 1 13 After cooler 1 37 90 adjustable connector 1 14 After cooler cover 1 38 Main air end return pipe 1 15 Fan cover plate 1 39 Air inlet valve 1 16 Discharge pipe connector 1 40 Air end 1 17 uc EHS 1 41 Oil inlet connector 1 pipe 18 Minimum pressure valve 1 42 Air end support 1 19 Sep
14. C to guarantee normal lubricant cycle e Some space 1m between the wall and compressor must be set aside in order to make daily maintenance work convenient and allow for sufficient airflow See figure3 Compressor should be placed on a solid level surface Do not bolt it down If compressor is mounted in an enclosed room an exhaust fan must be mounted in this room to keep the room cool The extractor fan should be able to cope with a higher volume of air than the air compressor after cooler system can produce jp DETROIT AIR SCREW COMPRESSOR DT SERIES WARNING In order to avoid damage caused by transportation safety bolts have been installed The user must lock in the bolt before transportation and loosen it before usage shown below Stabilizer bolt 2 4 Discharge pipe connection requirements e The diameter of discharge pipe should be at least the same as that of the compressors outlet All pipes and connectors should be able to bear the rated pressure The configuration should meet the requirements for flowing velocity of the produced compressed air and the pressure drop of pipeline must not exceed the set pressure by 5 Try to avoid using restrictive bends of small diameter piping If the pipeline is relatively long use pipes with a diameter exceeding the discharge pipe diameter on the compressor e Never let condensate flow into a working machine from the air compressor Always put a water filter and separator sys
15. DETROIT AIR SCREW COMPRESSOR OPERATING MANUAL MODELS DT 10 to DT 100 la Se T Km Dll tt gt ANA N N x m hs A n T P DT SERIES 25 DETROIT AIR SCREW COMPRESSOR DT SERIES PARTS AND SPECIFICATION SUBJECT TO CHANGE WITHOUT PRIOR NOTICE PICTURES AND DRAWINGS ARE FOR ILLUSTRATION PURPOSES ONLY DETROIT AIR SCREW COMPRESSOR DT SERIES DT SERIES Creating affordable and reliable compressed air DETROIT AIR SCREW COMPRESSOR DT SERIES Do not dismantle any part of the machine while in operation risk of death or personal injury is very probable Pay attention to hot surfaces risk of burns Do not exceed the machines rated pressure this may lead to machine failure or shut down Only use the machine at the factory set pressure Ensure proper cable connection and grounding Use of under rated power cable will result in damage to the cables and machine QP PPP Do not breathe compressed air it contains oil and other contaminants and is toxic Caution Please read the maintenance manual carefully before maintaining or using the machine DETROIT AIR SCREW COMPRESSOR DT SERIES Regular maintenance interval schedule Every 50 hours or weekly Check oil level Check intake filter if necessary clean it Drain
16. OR 1 4 Lubricant features Properties of Detroit Airs crew oil Low degree of blister non volatile High degree of anti emulsification High degree of anti oxidation Motion viscosity 40 C mm s 46 Pour point temperature 35 C anti solidification low energy consumption Flash temperature 230 C anti carbon deposit and low energy consumption Oil for electric motor bearings Recommended Shell Alvania RL 3 DT SERIES DETROIT AIR SCREW COMPRESSOR DT SERIES S N Name Symbol Description 1 Safety in electricity Make sure the working supply utilization voltage is off during operation KC Watch out charged body leakage 2 Danger Electricity i B body and other electrical parts Pay attention to and be careful about 3 Danger warning ZE relevant warning information Readin the 4 E Read the instruction before operation instruction 2 Inflammable and explosive materials 5 Ignition hazard must kept away from the machine Please don t weld or repair the air 6 Explosion hazard i storage tank Please don t place the equipment in 7 Electric shock oll wet places or outdoors to avoid hazard Ge electricity leakage due to reduction in electrical insulation resistance 8 No air leakage No air leakage here 9 Caution hand injury Ki Don t touch transmission part Nev Check rotational direction of the 10 Rotational direction motor during the process of firs
17. Our company will not offer free of charge service or parts to repair damages due to installation errors incorrect usage maintenance errors and use of non original manufacturer parts Use of non original service parts will void all warranties as will late or skipped servicing For routine or unscheduled maintenance note that Detroit Technical Service is able to provide you with assistance and spare parts as and when required DETROIT AIR SCREW COMPRESSOR CONTENTS 1 General 1 1 Operating principals 1 2 System control 1 3 Operation temperature 1 4 Lubricant features 2 Installation requirements and inspection before running 2 1 Hoist and transportation 2 2 Field requirements 2 4 Connection requirements for air pipe 2 5 Electric installation requirements 2 6 Machine inspection 3 Daily operation 3 1 Preparations before running 3 2 Start up procedure for the first time 3 3 Start up procedure for the daily time 3 4 Turn off procedure 4 Control panel 5 Control panel operation 5 1 Basic operation 5 2 PLC functions and technical parameters 5 2 1 Wiring diagram split type controller 5 2 2 Wiring diagram integrated type controller 5 3 Control principle 5 4 Alarm and notices 5 5 Safety protection 5 6 History failure record check 6 Maintenance 6 1 Maintenance items and maintenance interval 6 2 Maintenance of air intake filter 6 3 Maintenance of oil filter 6 4 Maintenance of oil separator 6 5 Maintena
18. TER RESET 0000 Reset time for air filter changes LUB OIL RESET 0000 Reset time for Oil Changes LUB GREASE RESET 0000 Reset time for Greasing bearings Setting this value to 0 will make the oil OIL FILTER 9999Hours filter alarm null Set this value to 0 to disable the O G O G SEPARATOR 9999Hours separator alarm function MAX LIFE TIME Set this value to to disable the alarm GAS FILTER 9999Hours PRESET for the air filter Set this value to 0 to disable the alarm for LUB OIL 9999Hours lubricant change Set this value 0 to disable the time LUB GREASE 9999Hours alarm of lubricating grease LANGUAGE Set to ENGLISH will change the interface nglis SELECT B to English NEW USER SANG Customer modify the user password PASSWORD DETROIT AIR SCREW COMPRESSOR FACTORY PARAMETERS DT SERIES The difference of the FACTORY PARAMETERS to the CUSTOMER PARAMETERS is that the FACTORY PARAMETERS cannot be modified unless you have the initial password from the factory The modification method of the FACTORY PARAMETER is the same as that of the CUSTOMER PARAMETER The main functions of the parameters are as follows PARAMETER Initial Value Functions HOST RATED CURR Maximum overload value of the motor 1 2 After the start delay time if the motor current is greater than 1 2 times of the set value or less than 4 times the set value t
19. arator lid 1 43 Anti vibration pad 1 20 Separator cartridge 1 44 Oil return valve 1 21 Oil return pipe connector 1 45 Temperature sensor 1 22 Pressure gauge 1 46 Air end discharge pipe 1 tank oil return Weg 24 Safety valve 1 DETROIT AIR SCREW COMPRESSOR 8 Troubleshooting DT SERIES FAULT POSSIBLE REASON SOLUTION Compressor does not start No electric power to compressor Emergency stop is activated Sequence of phases is not correct or phase lacking Overload protection relay does not reset Fuses or electrical contactors are defective Check electrical connection Check or interchange two phases L1 L2 or L3 in the power cable Reset it by hand Check replace if necessary Compressor fails to start and stop automatically due to high current Under voltage or phase voltage unbalanced Electrical connection is loose Compressor cannot vent pressure Compressor oil is very viscous due to low ambient temperature Minimum pressure valve fails to close Ensure constant voltage in accordance with IEC Standard Check and tighten connection Check intake valve and replace if necessary Heat up the compressor before startup Check the valve spring and replace if necessary Compressor stops automatically due to over load Exhaust pressure exceeds rated value Set value of overload protection is incorrect Oil air separator is blocked
20. condensation water from oil reservoir Every 500 hours Check and adjust belt tension if necessary belt driven only Every 1000 hours Replace lubricants for mineral oil Replace oil filter Replace intake filter Every 2000 hours Replace lubricants for synthetic oil Replace oil separator Clean the after cooler Attention 1 Replace oil filter element and lubricant after the first 500 hours of operation 2 Use of incorrect lubricant and spare parts will cause compressor damage only use original manufacturer oil and parts Use of non original parts will void your warranty 3 The service life of the compressor depends on the environmental conditions such as dust heat frequency of service quality of service parts and lubricant DETROIT AIR SCREW COMPRESSOR Warranty card DT SERIES Product name Reference Purchase date Contact Customer name Telephone person Address Maintenance date Maintenance content Maintenance man signature Customer signature DETROIT AIR SCREW COMPRESSOR DT SERIES Warranty period Our products enjoy 1 year warranty calculated from the purchase date for the complete machine and two year warrantee on the air end The warrantee covers only parts Labor transport and any other cost of repair incurred will not be covered by the warrantee
21. controlling the loading head piston opens the intake valve and allows air to be drawn in and compressed The air pressure on the compression side thus increases Full load when the pressure of the oil separation cartridge reaches 0 4MPa the minimum pressure valve opens to let compressed air flow out When the system pressure is lower than the rated pressure intake valve will stay open j DETROIT AIR SCREW COMPRESSOR DT SERIES No load when the discharge pipe s pressure reaches the maximum pressure rated by the pressure switch the switch cuts the solenoid valve s power As there is no pressure difference the Intake valve shuts and the discharge solenoid valve releases pressure thus reducing pressure in the separation cartridge When the discharge pressure drops below the rated operating pressure the cycle will repeat A minimum pressure is maintained in the system to ensure lubrication of the system Stop when the compressor is shut down all solenoid valves will be powered off The intake valve will close and the discharge solenoid will release any remaining pressure in the machine 1 3 Operating temperature DETROIT Screw air compressors can operate in ambient temperatures ranging from 5 degrees centigrade to 40 degrees centigrade Intake point is the measurement point Condensation low temperature When the ambient temperature is low water will condense in oil at a higher rate This screw compressor is equipped with a t
22. dify the other CUSTOMER PARAMETERS If there are no other parameters needed to be modified press the button RT to return to the upper menu or the main menu The other CUSTOMER PARAMETERS could be modified with the same method above DETROIT AIR SCREW COMPRESSOR DT SERIES CUSTOMER PARAMETERS First Submenu Second submenu ee Functions Value UNLOAD P Unload pressure value LOAD P Load pressure value Control fan starting This value will be set SET P T FAN START T to 120 C if there is fan present or the fan is not required Control the stopping temperature of the FAN STOP T fan When using the controller to protect the motor it is required that the time here defined will not meet the impulse starting HOST START TIME 0008s current of the motor the value here must be longer than the STAR DELAY TIME plus LOAD DELAY TIME When using the controller to protect the motor it is required that the time here FAN START TIME 0006s defined will not meet the impulse starting current of the motor STAR DELAY TIME 00065 Star contactor release starting delay time The loading delay time after the star ON OFF DELAY LOAD DELAY TIME 0002S contactor released PRESET The machine will automatically stop after EMPTY DELAY 0020M E this time of being unloaded The machine will not
23. elt tension 1 Stop the machine power off 2 Open service door 3 Loosen the bolt under the motor base Three quarter turn tightness is correct once under tension 4 Rotate the adjusting bolt adjust the tightness of the belt until getting the correct tension 5 Re torque the bolt on the base Method for replacing belts Follow the same method as tension adjusting After installing the new belts run the machine for 5 minutes then shut down and re tension the belt Repeat this process 3 times The belts are now tensioned correctly Tip Replace all belts never run old belts with new ones DETROIT AIR SCREW COMPRESSOR DT SERIES Adjustment of belt pulley It is essential that the motor pulley and the air end pulley stay perfectly aligned After moving any of these parts relocate the motor and air end and ensure the pulleys run on the same plane This will ensure that belt abrasion does not occur Properly set belts run quieter cooler and last much longer Centering of flexible shaft coupling on direct drive systems The flexible shaft coupling must be centered when the motor or gear end is moved or reinstalled Both shafts must be completely axial with a tolerance of 0 0 05 Maintenance for the electric motor A high quality lubricant should be applied on the motor bearings every 1500 hours Use shell Alvania RL3 if not specified Run the motor in a unload state after removing the pulley and belts Continue to pump lubricant
24. em Check valves for leaks and proper operation 3 Daily operation The procedure below is for starting up for the first time or for the start up procedure for the compressor after not being in use for more than two months 3 1 Preparation before running DETROIT screw air compressors have an advanced delay start delay stop function This function protects the motor air end and electromagnetic starter so as to optimize operating performance Delay start This function is to avoid starting up continuously after power cuts or emergency shut downs ph DETROIT AIR SCREW COMPRESSOR DT SERIES During this period the compressor cannot be started up Make sure there is no pressure in the system to avoid start up when there is backpressure Press the start button and wait for the delay time to elapse then the machine will start automatically Delay stop This is a soft stop function This function makes the compressor unload and shut down Press the stop button the shut down procedure will begin and the compressor will unload The machine will continue to run for a few moments and then turn off once the system pressure has been reduced If the start button is pressed during the unload procedure the system will cancel the shut down and continue to operate normally 3 2 Start up procedure for the first start e Check if the stop valve on the outlet is open If the stop valve is open this pressure is the pressure of the compressor syste
25. er is blocked by checking the air pressure state Set the running time alarm of the air filter The LCD displays Air filter life end when the usage time of the air filter expires gud DETROIT AIR SCREW COMPRESSOR DT SERIES Oil Filter alarm tips Check the alarm using the switch signal The controller can display a message on the LCD display to show the operator that the oil filter is blocked by checking the oil pressure state e Set the running time alarm of the oil filter The LCD displays Oil filter life end when the usage time of the oil filter expires Oil separator alarm tips Check the alarm using the switch signal The controller can display the message on the LCD display to show the operator that the oil separator is blocked by checking the pressure state e Set the running time alarm of the oil separator The LCD displays Oil separator life end when the usage of the oil separator expires Lubricant oil alarm tips e The LCD displays Lubricant Oil life end when the usage time of the lubricant oil expires Lubricant grease alarm tips e The LCD displays Lubricant grease life end when the usage time of the grease expires Main Controller Tips Item Meaning and Functions Lights Status POWER Controller Power on PWR Light RUN Controller run RUN Light Failure Detect failure and stop ERR Blinking Input Switching Terminal 20 12 Input switching INOO 08 lights but if there
26. ft shutter 1 39 Fan 1 17 Relief valve 1 40 Removable side panel 1 18 Oil gas separator tank 1 41 1 gauge T Refill cap of the oil gas do denno tank 20 Electrical control panel 1 43 Unloading pipe 1 21 Front left shutter 1 44 Air filter assembly 1 22 Emergency stop button 1 23 Controller 1 DT SERIES DETROIT AIR SCREW COMPRESSOR Parts list DT SERIES 18 5 250KW belt drive 3457 d 4 2 gt lt 2 0 d G vs XZ 107 EE k EN TI A D 44 DETROIT AIR SCREW COMPRESSOR Name Quantity DT SERIES Name Quantity Left shutter Oil return pipe from separator Digital display panel Main return pipe for air end Emergency stop button Air filter assembly Motor pulley Oil filter Motor Oil filter joint Electrical control panel Oil filter housing Cabinet frame leg Oil filter exhausting pipe Automatic belt tension spring Oil inlet bend Front shutter Oil return bend Anti vibration platform After cooler cover Main base plate After cooler cover panel Anti vibration pad After cooler Cabinet frame leg Exhaust bend Shutter on the right side Cooling fan cage Transportation fixing bolt Cooling fan Air end mounting frame Control panel Exhaust header pipe for air end Belt Oil gas separator tank Air end
27. g direct drive of gear end by hand Rotate the drive shaft by hand in both directions back and forth to ensure the rotors are free e Should the compressor be out of use for more than 2 months open the intake valve and pour about half a litre of oil into the loading head Rotate the drive shaft back and forth and ensure the oil enters the air end e When reconnecting the inlet pipe make sure the nozzle is sealed as DETROIT AIR SCREW COMPRESSOR DT SERIES Inspecting oil level When opening the side door you will see the oil inspection tube The maximum oil level must not be above the upper part of oil inspection tube the minimum oil level must not be lower than the bottom of the oil inspection tube The oil level will differ when the machine is running Check oil level only 30 minutes after the machine has been turned off Add the rated amount of oil Make sure the lid to the nozzle is screwed on well and the seal ring is in good condition Tip Too much oil will cause compressed air to contain excess oil too little oil will lead to high operatin temperatures Oil inspection tube Inspection of transmission system e Inspect belts Check if all belts are in the pulley grooves Adjust the tightness of belts through the adjusting bolt on motor e Inspect the flexible coupling on the drive shaft Check the bolt of the flexible shaft coupling is properly tightened Inspection for all valves in the syst
28. g is completed The load solenoid valves are without power during the whole starting process to ensure load free starting e Automatic Run Control When the motor is started in A state and loads the solenoid valves will be activated The air compressor will load and compress air until the pressure in the discharge reaches the pre set unload pressure value The compressor will then unload as the solenoid valve loses power the loading head valve closes Should the compressor be unloaded for extended periods the control system will shut the motor off until such time as the pressure in the system drops below the LOAD PRESSURE VALUE At this time the control system will restart the machine e Manual Load unload in automatic status function At the automatic status function the unit will stay in the unload state press the button At to load if the pressure is higher than the unload pressure the loading solenoid valve will close once and then return to the unloaded status if the pressure is lower than the unload pressure the loading solenoid valve will be activated The unit will not unload until the air supply pressure becomes higher than the unload pressure When the unit is in the load state press the button At to unload If the pressure is higher than the load pressure the loading solenoid valve will lose power and return to the unload state until the air discharge pressure becomes lower than the load pressure If the pressure is lower than the load
29. he main display after 5 seconds will be the following GAS T 20 C GAS P 0 60Mpa STATE NORMAL STOP NEAR Press Enter the following Menu Selection Interface PARAMETER CALENDAR CUSTOMER PARAMETER FACTORY PRAMETER Run the Parameter Review Press or t to move the black cursor over the menu RUN PARAMETER and then press gt into the submenu HOST FAN CURRENT TOTAL RUN TIME CURRENT RUN TIME MAINTENANCE PARAMETER Press gt to into the next menu CUR A R S T HOST 56 1 562 56 0 FAN 4 1 4 1 4 1 If the display menu is the last menu level the black cursor will disappear press the RETURN button RT and return to the upper menu or the main interface If the operation is stopped in a certain interface it will automatically return to the main interface after several seconds Using the moving buttons confirm button gt return button RT to view the RUN PARAMETERS such as CURRENT RUN TIME MAINTENANCE PARAMETER HISTORIC FAILURE 4 jph DETROIT AIR SCREW COMPRESSOR DT SERIES PRODUCTION DATE and CURRENT FAILURES and then return to the upper menu with the similar method of the above Calendar and Time Press or to move the black cursor to the menu CALENDAR and then press gt the following menu will pop up DATE AND TIME 2004 2 22 SUNDAY 12 46
30. he unit will activate the overload feature FAN RATED CURR Maximum overload value of the fan motor Same as above 1 2 Alarm sounds when the temperature reaches this set PRE ALARM T 105 C value Alarm sounds when the air exhaust temperature STOP T 110 C reaches this set value Alarm and stop when the air supply pressure reaches STOP P 1 00MPa this set value The Unload Limit Pressure in the Customer Parameter UNLOAD LIM P 0 80MPa must be set lower than this value MODI LOAD TIME Hours The factory can modify the load running time MODI TOTAL TIME Hours The factory can modify the total running time HISTORY FAULT ES Input the history failure password to clear all the RESET history failures When the max phase current min phase current is greater than 1 set value the unbalance protection UNBALANCE SCOPE 0006 will stop the machine If the set value is greater than 15 the unbalance protection will be disabled Set the LACK PHASE TIME 220S the Lack phase LACK PHASE STOP 0005 protection will be disabled 0000 M PROD DATE The factory inputs the product date of the unit PROD NO FREE ES The factory inputs the product No of the unit DETROIT AIR SCREW COMPRESSOR DT SERIES 5 2 PLC Functions and Technical Parameters e Switching value 8 ways of switching the value input 10 wa
31. hermostatic valve set to open at 70 C Water vaporizes at 70 C Oil will not pass through the oil cooler until the rated temperature is reached thus preventing water condensation in the oil In areas of temperatures below 5 C anti condensation apparatus should be mounted and a heater should be installed under the separation element Overheating high temperature In environments with high ambient temperatures air intake should be via ducting directly from outside the compressor room location For example compressors installed in boiler rooms or high temperature environments must get their air intake for outside the room where normal ambient temperatures exist Discharge temperature The measure point of discharge temperature is located in the vent air outlet of the compressor Discharge temperature would vary according to environmental temperatures load percentage cleanliness of cooler cleanliness of intake filter and the cleanliness of oil filter The normal operating temperature is between 70 C and 90 C When the compressor is started up from a cool condition the discharge temperature will increase to 85 C quickly The thermostatic valve will open fully at 70 C The thermostatic valve controls the temperature accurately by constantly varying the oil flow through the oil cooler Detroit compressors can safely run up to 109 C after which the automatic overheat protection function will shut the machine down DETROIT AIR SCREW COMPRESS
32. ion cartridge core is fed back to the screw through an oil return tube A valve is mounted on the oil return tube in order to keep the loss of compressed air to a minimum The clean oil flows into the air end internal cavity after being filtered Cooling After oil is separated compressed air flows out of the separation element through a minimum pressure valve then into the after cooler The cooler cools the compressed air into a temperature range 7 10 degrees Celsius higher than ambient before it is discharged through the discharge pipe The minimum pressure valve guarantees the minimum pressure needed to keep circulation of oil on start up or when running normally Due to the check valve on minimum pressure valve the compressed air cannot flow back into the separation element 1 2 System control The aim of having a control system is to control the intake valve correctly to control air intake The system is comprised of the intake valve loading piston solenoid valve and pressure gauge Start up the intake valve shuts under the influence of spring force Hence only a little air is sucked through a single direct valve on the intake valve to generate cartridge pressure to keep up circulation of oil when the screw air compressor is started up from no load state Load when the compressor is running in a load state it creates a vacuum within the compressor This creates a difference of pressure between the intake filter and the air end A solenoid
33. m e Turn power on the power indicator light will illuminate The compressor begins the delay start procedure Starting instantly is not possible Press start button to run the compressor the delay start procedure will complete and the compressor will load Check the operating temperature and pressure are stable and correct Once the compressor has reached the operating pressure it will continue to run but will unload Check that the output pressure is correct ensure the machine is running as it should without vibration 3 3 Daily start up procedure Check if oil level is correct The oil level must be in the center of the oil gauge Drain the water condensate from the external pressure vessel Confirm the stop valve is open e Press start button If the compressor does not start up automatically and the run light is flashing it means compressor is in a delay start state Attention Do not start up within 60 seconds of shut down The system must not start up under pressure 3 4 Shut down procedure Press the stop button the compressor will commence the shut down procedure the stand by indicator light will be flashing After some time the compressor stops If the compressor is start stopping press the stop button to make it stop properly Attention when compressor is in stand by it may stop and may start up at random Do not take it for granted that the compressor has been stopped when the motor is not in
34. mpressed air consumption to let pressure build up Use original manufacture oil only Drain condensate water from oil tank frequently No compressed air exhaust no pressure build up Intake valve does not open Discharge solenoid valve defective Minimum pressure valve does not open Components in compressor are leaking V belts are torn or slip Intake controller or solenoid valve is defective or air pipe connected to controller is leaking check and replace if necessary Check electric supply and clean valve replace if need Check minimum pressure valve spring replace if necessary Check oil and air lines in compressor tighten and reseal coupling connections Check and replace if necessary System pressure does not decrease when reaching rated pressure value Intake valve does not close Discharge solenoid valve is defective System pressure control fault Intake controller or solenoid valve is defective or air pipe connected to controller is leaking check and replace if necessary Check electric supply and clean valve replace if necessary Check pressure sensor pressure switch or computer controller replace if necessary Oil or oil smoking in intake filter when stopping Exhaust volume decreases Compressor loads unloads very frequently Intake valve is leaking Pressing Emergency Stop when compressor is in load can cause this Minimum pressure non return valve is leaking E
35. nce of minimum pressure valve and temperature control valve 7 Explored diagram parts lists 8 Troubleshooting DT SERIES c4 11 11 12 13 14 15 15 16 16 16 17 18 18 25 27 28 29 30 32 32 33 35 35 35 35 36 39 47 DETROIT AIR SCREW COMPRESSOR DT SERIES 1 General DETROIT screw air compressors adopt up to date European design and technology All key parts such as screw air end electric motor cabinet and pressure vessels are manufactured in house by Detroit Air Compressors are built to European standards with focus on high efficiency low cost long service life and low power consumption Detroit air screws are computer controlled monitored and protected to ensure best performance efficiency and service life 1 1 Operating principles Compression The air end sucks air through air intake filter and intake control valve dual rotary shafts compress the air Oil is injected into the air compressing cavity providing lubrication and cooling for the air end Separation The mixture of air and oil generated in the compression stage is exhausted into an air and oil separation cartridge Most of the oil is separated from the air under the influence of gravity and mechanical centrifugal force Almost all oil mist is separated out of the air in this stage by means of the separator cartridge core Remaining oil content is below 3PPM The oil separated through the separat
36. or and fan motor repair if necessary Set operating pressure to the maximum permissible pressure range of compressor see value in nameplate Replace safety valve Check and replace air oil separator if necessary DISTRIBUTED CONTACT DATE BY
37. play cable connector which are used for the display connector Rs 485 communication interface and 24V Power input Controller Connection Terminals The display panel is connected to the controller using communication cables 23 24 and 25 are the phase sequence input terminals 7 and 9 are the Air Exhaust Temperature Input terminals CT1 is the host motor contactor CT2 is the fan motor contactor 32 is the common port COM1 of the relay output 27 controls the main contactor 28 controls the star contactor 29 controls the angel contactor 30 is the loading solenoid valve 31 controls the Fan 34 controls the Load release valve 37 is the running indicator 38 is the Failure indicator 39 is the Alarm indicator 40 is COM2 42 is the simulated ground Earth 43 and 44 are the 220V power source Attention the transformer must be connected to a surge protector when wiring 5 3 Control Principle Individual Control Local Automatic control ON OFF mode User operated Loading method Automatic e Press I to start Y A Starting When the controller is powered on it will perform a 3S self check Press the I button the machine will not start until self checking is completed The starting process of the host will be as follows KM3 is powered on KM2 is Powered on Y type Starting Status Time Delay finish Y A converting time loses power 1 and interlocked 1 is powered on gt Motor runs in A type and startin
38. pressure unloading is disabled e Normal Stopping Press the button the loading solenoid will lose power and the unloading solenoid activate after o jph DETROIT AIR SCREW COMPRESSOR DT SERIES the stop delay procedure the machines electrical systems will shut down and stop running e Frequency starting prevents control The motor cannot be started immediately after shutdown Should the system be started up again a time delay countdown will begin The system will restart once the timer reaches 0 Remote Automatic Control ON OFF mode Remote Load mode Automatic The remote automatic control is almost the same as the local automatic control the only difference is that the start and stop of the unit is controlled by remote control Local Manual Control On Off mode User operated Load mode Manual This starting and stopping control is the same as the automatic control the only difference is that when the starting procedure completes in this mode the machine is at the load free state and will be loaded by pressing the button t When the air supply pressure is higher than the unload pressure the unit will load automatically if the button 4f is not pressed to load the unit will be running at the load free state until the load free stop is activated by the PLC During the unloaded stage press the button t to load and during the loaded stage press the button f to unload Remote Manual Con
39. r Oil drainage valve Attention Don t open the oil discharging ball valve for five minutes after shutdown After start up Watch the pressure on the control panel Check temperature and the general condition inside the compressor Check if there is leakage on the outer surface of the cooler Maintenance plan DAILY Check the running temperature and working pressure Write down the current voltage temperature and pressure WEEKLY Clean compressor after shut down Blow the air filter clean DETROIT AIR SCREW COMPRESSOR DT SERIES MONTHLY Check oil level Check the bolts on the belt pulley shaft coupling Blow the cooler clean Maintenance 500 hours Check the quality of oil If it is clean it be re used after being re filtered Otherwise replace it Replace the oil filter Replace the intake filter Replace the filter net of the oil return pipe Check the belts shaft coupling for wear or damage Attention Reduce maintenance interval if the environment is harsh Every 2000 hours Replace the intake filter Replace the separator Replace lubricant Check intake control valve Oil gas separator Every 4000 hours Replace the minimum pressure control valve Check thermostatic valve Check the electronic connections are secure Check if main bolts main nuts and connectors are tight Check the security apparatus CAUTION Don t repair maintain the machine if the compressor is
40. rifice 2 Unloading and valve 8 Pelt 14 Pressure maintain valve 20 Oil and water outlet valve 3 Air inlet group valve 9 011 filter 15 sensor 21 Ball valve 4 Screw host machine 10 Pulley 16 Safety valve 22 Cooler 5 Oil non return valve 11 Drive motor 17 Gas oil separator 6 Temperature sensor 12 Cooling fan 18 Pressure gauge 41 DT SERIES DETROIT AIR SCREW COMPRESSOR DT SERIES 90 250KW direct drive Parts list s NA y Xx 1 S Ex Wey Zi H z YAY OG AL e X eee aes 3 ARES COS G qa n NY gt 42 DETROIT AIR SCREW COMPRESSOR DT SERIES S N Name Quantity S N Name Quantity 1 Right panel 1 24 Control shutter 1 2 Cabinet frame leg 1 25 Bend 1 3 1 26 Adjustable pipe joint 1 shutters 4 Motor 1 27 Minimum pressure valve 1 5 Coupling 1 28 Air outlet pipe 1 6 Back central gatepost 1 29 Head oil inlet 1 7 Anti vibration pad 1 30 Cooler oil inlet joint 1 8 Back left gatepost 1 31 Oil filter assembly 1 9 Main baseplate 1 32 Oil filter joint 1 10 Center bracket 1 33 Removable service panel 1 11 Screw air end 1 34 After cooler cover 1 12 Air inlet valve 1 35 Air outlet 1 13 Air end exhaust 1 36 Ball valve 1 14 Bend 1 37 After cooler 1 15 Oil level indicator 1 38 Fan cowl 1 16 Le
41. ssword input is required ENTER Note The Customer Password can be modified in the CUSTOMER PARAMETER the FACTORY PASSWORD is only available from your Detroit Authorized agent The Blinking Position will appear after this interface is displayed The button and H have been changed to PgUp and PgDown button that can be used to change the current value The button gt is changed to a move button to move to the position where the modification is needed Press to confirm and the following interface will be displayed BLOCK 0 8 When there is BLOCK UNLOAD 0 6 digplavediarthertop tight FAN START T 80 C FAN STOP T 70 C the CUSTOMER PARAMETER set status corner it means it is at The or t button returns to black cursor function and the button gt returns to be the CONFIRM button function Press the CONFIRM button gt when the cursor is over the menu BLOCK UNLOAD PRESSURE now blinking appears and the button and t have been changed to PgUp and PgDwn button function than can be used to change the current value The button gt is changed to move button function move to the position where the modification is needed Press M to confirm and the blinking position will disappear The t return to black cursor function the move button and the button si change back to the CONFIRM function to continue to mo
42. t of the motor starting up or changing wire to avoid serious breakdown to the machine 11 Danger hot N Hot surface avoid burns DETROIT AIR SCREW COMPRESSOR DT SERIES Installation information 2 Installation requirements and inspection before running machine Examine the machine for any damage whatsoever cause by installation or transport Do not run this machine if it has been damaged Please report damage to your agent before commissioning 2 1 Hoist and transportation Guide ropes should be used when compressor is being hoisted to avoid damage Check for welding cracks and loose bolts after it is lifted As the below figure shows a supporting board is needed when the compressor is being hoisted When using a forklift to move the compressor ensure the forks can cover the entire base length of the compressor Never use under rated lifting or towing equipment to move machinery Ensure the machine is secure when being lifted or towed on a trailer The length of fork should not be less than the length of the base of compressor 2 2 Installation requirements e The compressor should be located a clean dust free well ventilated location Air should not contain toxic or flammable gasses e The compressor should not be placed outside unless well protected from the elements Should the environment be dusty dust filters should be placed on the intake vents e Environmental temperature should be above 5
43. tem that removes water oil and solid particles before it reaches production line machinery DETROIT AIR SCREW COMPRESSOR DT SERIES Install the pipeline leading to the pre filter system at a 1 to 2 degree down slope This will make water drainage more efficient e A one way stop valve should be mounted at the air outlet of the compressor to allow for simple shut off and maintenance of the system e Due to the anti vibration design and rubber mounted after cooler all external pipelines should be supported externally In order to prevent water condensate from flowing back into the machine after shut down configure the out going pipe suitably When compressor is used with an air dryer air reservoir should be installed in between compressor and drier This allows the air to cool and water to condensate inside the pressure vessel This configuration greatly reduces load on the drying system thus saving energy Installation of a ring main system is recommended as it reduces pressure drop when load increases Ring mains also allow for easy maintenance of the distribution system without the need to shut down air supply 2 5 Electric installation requirements All internal electrical systems of the compressor are thoroughly tested during the manufacturing process All external power connections should be to proper specification for the electric motor power requirements Ensure the electrical systems are installed
44. top the machine LCD displays Air Exhaust High Temperature Reverse rotation running protection Attention When the phase sequence of the power connected to the air compressor is not conforming to the input of the controller the LCD displays Wrong phase sequence and as a result the controller will not start the motor Check and alternate any two of the phase inputs and check rotation direction Over Pressure protection When the pressure of the air exhaust is higher than the set stop pressure of the controller the controller will alarm and stop the machine the LCD displays Pressure too high Sensor Failure Protection When the cable of the pressure or the temperature sensor is broken the controller will alarm and stop the machine LCD displays sensor failure 5 6 History failure record The failures caused by the peripheral equipments of the controller can be investigated by querying the failure record or the history failure records to find the failure causes and solve the problem DETROIT AIR SCREW COMPRESSOR DT SERIES 6 Maintenance 6 1 Maintenance items and maintenance intervals Without proper maintenance the service life of the machine will be greatly reduced Any high performance equipment requires regular maintenance to ensure perfect operation Daily maintenance Before start up drain out water in the bottom of oil tank until some oil flows out check the oil level is correct Wate
45. trol On Off Mode Remote Load mode Manual The remote automatic control is almost the same as the local manual control the only difference is that the start and stop of the unit is controlled by remote control Network control When the control network is set to COMPUTER it can be controlled by a computer network Set the controller communication to BLOCKING to enable network control between the machines The master control machine to which all other compressors are linked must be 1 controller Fan Temperature control When the air exhaust temperature is higher than the fan starting temperature the fan motor will run when the air exhaust temperature is lower than the fan stop temperature the fan motor will stop running If there is no fan or the fan is not necessary set the starting temperature of the fan to 120 C and the stop temperature to 70 C Failure stop and Emergency stop When there is any electronic failure or high temperature alarm during the running process the controller will stop the motor immediately The motor can only be restarted after the failures are cleared Should any emergency situation occur please press the emergency stop button to cut off the power supply to the controller and motor contactors 5 4 Alarm and Notices Text Display tips Air filter Alarm tips Check the alarm using the switch signal The controller can display the message on the LCD display to show the operator the air filt
46. while the motor is running until all original old grease has been purged from the bearing cavity Do not add grease while the motor is shut down bearing damage may occur Wipe away the excess grease Excess grease causes damage to the bearings SERIES DETROIT AIR SCREW COMPRESSOR 7 Flow diagram DT SERIES 18 5 250KW direct drive 1 4 Oi pipeline 4 Gas pipeline doni Y nalis m Ra x VK d vi Mun Air filter 7 One way valne 13 Safety valve 19 Out and water outlet valve 2 Air inlet group valve 8 Temperature sensor 14 Gas oil separator 20 Cooler 3 Unloading and valve 9 ol filter 15 Pouring orifice 21 Cooling fan 4 Screw host machine 10 Ball valve 16 Pressure gauge 5 Drive motor 11 Pressure maintain valve 17 Oil sight glass 6 Centric coupling holder 12 Pressure sensor 18 Oil and gas barrel Oil and gas pipeline A 12 13 14 15 16 17 18 19 20 gl 40 SERIES DETROIT AIR SCREW COMPRESSOR Flow diagram DT SERIES 18 5 250KW belt drive tee pipeline 24 Gas pipeline Aes Oil and gas pipeline 1 14 7 16 4 us A E 17 A G 18 d 2 19 20 2 7 el 22 12 L Air filter 7 sight glass 13 Ball valve 19 Pouring o
47. xcessive oil in air Air vent intake filter or oil air separator blockage Intake valve does not function correctly Components in compressor are leaking Pressure differential incorrectly set Air consumptions is not steady External units of the compressed air treatment block Ball valve at compressor outlet closed Check and replace if necessary Switch off compressor using OFF Button only use the Emergency Stop Button in emergencies Check and replace if necessary See the reasons of excessive oil consumption Clean and replace if necessary Check and replace if necessary Check air lines in compressor tighten and reseal screw coupling connections if necessary Adjust pressure differential not smaller than 0 15 MPA usually Use a bigger volume receiver tank Clean external air pipeline air dryer or air filter replace if necessary Open ball valve 89 Jc DETROIT AIR SCREW COMPRESSOR Abnormal noise and vibration of the compressor Safety valve blows Fixing bolts on the base are loose V belts are slipping Friction with fan vane and edge Compressor installed improperly Screw air end or motor is defective Operating pressure has been misadjusted Safety valve is defective System internal pressure has exceeded pressure of safety valve DT SERIES Tighten Adjust v belt tension replace if necessary Adjust fan vane Mounted compressor on flat ground Check air end or main mot
48. ys of relay switching the value input Analog quantity 2 Pt100 temperature input 2 ways of 4 20mA transferred input 2 groups of phase current input Match with CT e Input voltage of phase sequence 3 phase 460V 230V e Working power of controller 100V 220V 50Hz 60Hz 20VA e Display measuring Range Oil Temperature 20 150 C Accuracy 1 Air Temperature 20 150 C Accuracy 1 Running time 0 999999 hours Current Display Measuring Range 0 999 9A Pressure 0 1 60Mpa Accuracy 0 01 e Phase sequence Protection When the protector detects the wrong phase sequence it activates for lt 25 Motor Protection This control unit has the following 5 basic protection functions Rotor Lock protection After the starting of the motor if the working current reaches 4 or 8 times the set value the protection activates The activation time is less than 0 2s Short Circuit Protection if the detected current reaches 8 times or more above the set value the protection activates in less than 0 2s Drop phase protection Any of the phases drop the protection activates as per the set time Unbalance Protection Current difference between any of the two phases reaches the percentage of the setting value the protection activates in less than 5s Overload anti time limitation protection time unit s See the following table The multiple Actual value Set Value When the running current of the motor is in 1 2 3
Download Pdf Manuals
Related Search