Quincy Compressor QGS 40 Instruction Book
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Quincy Compressor QGS 40 Instruction Book

Oil-flooded rotary screw compressors
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Oil-flooded rotary screw compressors
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Summary of Contents for Quincy Compressor QGS 40

  • Page 1 QGS 40, QGS 50, QGS 60 QGS 75, QGS 100 Oil-flooded rotary screw compressors Instruction book...
  • Page 3 Quincy Compressor Oil-flooded rotary screw compressors QGS 40, QGS 50, QGS 60, QGS 75, QGS 100 From following serial No. onwards: API 100 000 Instruction book Original instructions Copyright notice Any unauthorized use or copying of the contents or any part thereof is prohibited.

  • Page 4: Table Of Contents

    Instruction book Table of contents Safety precautions......................5 ...........................5 AFETY ICONS ......................5 AFETY PRECAUTIONS GENERAL ...................6 AFETY PRECAUTIONS DURING INSTALLATION ....................7 AFETY PRECAUTIONS DURING OPERATION ................8 AFETY PRECAUTIONS DURING MAINTENANCE OR REPAIR General description......................10 ..........................10 NTRODUCTION .........................12 IR AND OIL CIRCUIT ........................14 EGULATING SYSTEM .........................15...
  • Page 5 Instruction book 3.15 .............................49 EST MENU 3.16 ......................50 ODIFYING GENERAL SETTINGS 3.17 ..........................51 ENERAL MENU 3.18 ........................52 SER PASSWORD MENU 3.19 ...........................54 CCESS KEY MENU 3.20 .........................54 ROGRAMMABLE SETTINGS Installation........................57 ........................57 IMENSION DRAWINGS ........................59 NSTALLATION PROPOSAL ..........................62 ICTOGRAPHS Operating instructions....................63 ..........................63 NITIAL START ..........................66...
  • Page 6 Instruction book ........................76 IL SEPARATOR CHANGE ............................77 OOLERS ..........................78 ILTERING PANEL ..........................79 AFETY VALVES Problem solving......................80 Technical data.......................83 ......................83 LECTRIC CABLE SIZE AND FUSES ....................88 EFERENCE CONDITIONS AND LIMITATIONS ..........................88 OMPRESSOR DATA Options..........................90 10.1 ..........................90 UTOMATIC DRAIN 10.2 ..........................91 EAVY DUTY FILTER 10.3 ........................91 FILTRATION PANELS...

  • Page 7: Safety Precautions

    Instruction book Safety precautions Safety icons Explanation Danger for life Warning Important note Safety precautions, general General precautions 1. The operator must employ safe working practices and observe all related work safety requirements and regulations. 2. If any of the following statements does not comply with the applicable legislation, the stricter of the two shall apply.

  • Page 8: Safety Precautions During Installation

    Instruction book Safety precautions during installation All responsibility for any damage or injury resulting from neglecting these precautions, or non observance of the normal caution and care required for installation, operation, maintenance and repair, even if not expressly stated, will be disclaimed by the manufacturer.

  • Page 9: Safety Precautions During Operation

    Instruction book 17. For water-cooled machines, the cooling water system installed outside the machine has to be protected by a safety device with set pressure according to the maximum cooling water inlet pressure. 18. If the ground is not level or can be subject to variable inclination, consult the manufacturer. Also consult following safety precautions: Safety precautions during operation Safety...

  • Page 10: Safety Precautions During Maintenance Or Repair

    Instruction book 11. Do not remove any of, or tamper with, the sound-damping material. 12. Never remove or tamper with the safety devices, guards or insulations fitted on the machine. Every pressure vessel or auxiliary installed outside the machine to contain air above atmospheric pressure shall be protected by a pressure relieving device or devices as required.
  • Page 11 Instruction book 16. Before clearing the machine for use after maintenance or overhaul, check that operating pressures, temperatures and time settings are correct. Check that all control and shut-down devices are fitted and that they function correctly. If removed, check that the coupling guard of the compressor drive shaft has been reinstalled.

  • Page 12: General Description

    General description Introduction General QGS 40 up to QGS 100 are single-stage, oil-flooded screw compressors, gearbox driven by an electric motor. The compressors are available in air-cooled version. The compressors are enclosed in sound-insulated bodywork. The compressors are controlled by the AIRLOGIC² controller.
  • Page 13 Instruction book Main components Ref. Name Air filter Air receiver Location of air outlet valve Air cooler Oil cooler Controller Drive motor Oil filter Emergency stop button 2920 7101 21...

  • Page 14: Air And Oil Circuit

    Instruction book Air and oil circuit Air circuit Flow diagram, air circuit Reference Description Intake air Air/oil mixture Wet compressed air Description Air drawn through filter (AF) and open inlet valve (IV) into compressor element (E) is compressed. A mix of compressed air and oil flows into the air receiver/oil separator (AR) via check valve (CV).
  • Page 15 Instruction book Oil circuit Flow diagram, oil circuit Description In air receiver/oil separator (AR), most of the oil is removed from the air/oil mixture by centrifugal action. The remaining oil is removed by oil separator (OS). The oil collects in the lower part of air receiver/oil separator (AR), which serves as an oil tank.

  • Page 16: Regulating System

    Instruction book Cooling system Cooling system air-cooled compressors The cooling system comprises air cooler (Ca) and oil cooler (Co). On air-cooled compressors, the cooling air flow is generated by a fan (FN). Regulating system Unloading If the air consumption is less than the air output of the compressor, the net pressure increases. When the net pressure reaches the unloading pressure, solenoid valve (Y1) is de-energised.

  • Page 17: Electrical System

    Instruction book Regulating system (loaded condition) Loading When the net pressure decreases to the loading pressure, solenoid valve (Y1) is energised. • Control pressure is fed from the oil separator vessel via solenoid valve (Y1) to loading plunger (LP) and unloading valve (UV).
  • Page 18 Instruction book Electric cubicle, typical example Reference Designation F1/2/3 Fuses (F3 is only provided in case a phase sequence relay is provided) Overload relay, compressor motor Circuit breaker, fan motor (on air-cooled compressors) Line contactor Star contactor Delta contactor Transformer X103/X108 Connectors Earth terminal...

  • Page 19: Graphic Controller

    Instruction book Graphic controller Controller View of the AIRLOGIC² controller Introduction The electronic controller has following functions: • Controlling the compressor • Protecting the compressor • Monitoring components subject to service • Automatic restart after voltage failure Automatic control of the compressor The controller maintains the net pressure between programmable limits by automatically loading and unloading the compressor (fixed speed compressors) or by adapting the motor speed (compressors with frequency converter).

  • Page 20: Control Panel

    Instruction book Example: If the compressor element outlet temperature exceeds the programmed shut-down level, the compressor will be stopped. This will be indicated on the display of the controller. The compressor will also be stopped in case of overload of the drive motor. Air-cooled compressors will also be stopped in the event of overload of the fan motor.

  • Page 21: Icons Used

    Instruction book Reference Designation Function Display Shows icons and operating conditions. Automatic operation symbol LED, Automatic operation Indicates that the regulator is automatically controlling the compressor: the compressor is loaded, unloaded, stopped and restarted depending on the air consumption and the limitations programmed in the regulator. Warning symbol LED, Warning Flashes in case of a shut-down, is lit in case of a warning...
  • Page 22 Instruction book Name Icon Description Machine control mode Local start / stop Remote start / stop Network control Automatic restart after voltage Automatic restart after voltage failure is active failure Week timer Week timer is active Active protection functions Emergency stop Shutdown Warning Service...
  • Page 23 Instruction book Name Icon Description Not valid Input icons Icon Description Pressure Temperature Digital input Special protection System icons Icon Description Compressor element (LP, HP, ...) Dryer Frequency converter Drain Filter Motor Failure expansion module Network problem 2920 7101 21...
  • Page 24 Instruction book Icon Description General alarm Menu icons Icon Description Inputs Outputs Protections (Warnings, shutdowns) Counters Test Regulation (Settings) Service Event history (saved data) Access key / User password Network Setpoint Information Week Timer General 2920 7101 21...

  • Page 25: Main Screen

    Instruction book Navigation arrows Icon Description Down Main screen Function The Main screen is the screen that is shown automatically when the voltage is switched on and one of the keys is pushed. It is switched off automatically after a few minutes when no keys are pushed. Typically, 5 different main screen views can be chosen: 1.
  • Page 26 Instruction book Compressor Outlet Element Outlet (fixed speed compressors) Flow (compressors with frequency converter) Load, shutdown, ... (text varies upon the compressors actual condition) Menu Typical Main screen (4 value lines), fixed speed compressors Typical Main screen (4 value lines), compressors with frequency converter Text on figures Compressor Outlet Element outlet...
  • Page 27 Instruction book To call up more information about the icons shown, select the icon concerned using the scroll keys and press the enter key. • Section C is called the Status bar This bar shows the text that corresponds to the selected icon. •...

  • Page 28: Calling Up Menus

    Instruction book When the Chart (Low Resolution) is selected, the chart shows the variation of the selected input per day. The screen shows the evolution over the last 10 days. Selection of a main screen view To change between the different screen layouts, select the far right icon in the control icons line (see value lines display icon or chart display icon in section Used icons) and press the Enter key.

  • Page 29: Inputs Menu

    Instruction book Inputs menu Menu icon, Inputs Function • To display the actual value of the measured data (analog inputs) and the status of the digital inputs (e.g. emergency stop contact, motor overload relay, etc.). • To select the digital input to be shown on the chart in the main screen. Procedure Starting from the main screen, •...
  • Page 30 Instruction book Selecting another input signal as main chart signal With the Modify button active (light grey background in above screen), press the Enter button on the controller. A screen similar to the one below appears: The first item in the list is highlighted. In this example, the Net Pressure is selected (chart icon). To change, press the Enter button again: a pop-up window opens: Press Enter again to remove this input from the chart.

  • Page 31: Outputs Menu

    Instruction book (1): Set as main chart signal Outputs menu Menu icon, Outputs Function To call up information regarding the actual status of some outputs such as the condition of the Fan overload contact (on air cooled compressors), the Emergency stop contact, etc. Procedure Starting from the Main screen, •...

  • Page 32: Counters

    Instruction book Text on image Outputs Fan motor contact Blow-off contact General shutdown Automatic operation • The screen shows a list of all outputs with their corresponding icons and readings. If an output is in warning or shutdown, the original icon is replaced by the warning or shutdown icon respectively.

  • Page 33: Control Mode Selection

    Instruction book Text on image Counters Running hours Motor starts Load relay VSD 1-20 % rpm in % (the percentage of the time during which the motor speed was between 1 and 20 %) (compressors with frequency converter) The screen shows a list of all counters with their actual readings. Note: the example above is for a frequency converter driven compressor.

  • Page 34: Service Menu

    Instruction book There are 3 possibilities: • Local control • Remote control • LAN (network) control After selecting the required regulation mode, press the enter button on the controller to confirm your selection. The new setting is now visible on the main screen. See section Used icons for the meaning of the icons.
  • Page 35 Instruction book • Press the Enter key. Following screen appears: Text on image Service Overview Service plan Next service History • Scroll through the items to select the desired item and press the Enter key to see the details as explained below.
  • Page 36 Instruction book Example for service level (A): The figures at the left are the programmed service intervals. For Service interval A, the programmed number of running hours is 4000 hours (upper row) and the programmed number of real time hours is 8760 hours, which corresponds to one year (second row).
  • Page 37 Instruction book Press the Enter key. Following screen appears: Modify the value as required using the ↑ or ↓ scroll key and press the Enter key to confirm. Note: Running hours can be modified in steps of 100 hours, real time hours can be modified in steps of 1 hour.

  • Page 38: Regulation Menu

    Instruction book History The History screen shows a list of all service actions done in the past, sorted by date. The date at the top is the most recent service action. To see the details of a completed service action (e.g. Service level, Running hours or Real time hours), use the Scroll keys to select the desired action and press the Enter key.

  • Page 39: Modifying The Setpoint

    Instruction book Modify • The screen shows the actual unloading and loading pressure settings for both pressure bands. To modify the settings, move the cursor to the action button Modify and press the Enter key. Following screen appears: • The first line of the screen is highlighted. Use the Scroll keys to highlight the setting to be modified and press the Enter key.
  • Page 40 Instruction book • Activate the menu by pressing the enter key. A screen similar to the one below appears: Text on image Regulation Setpoint 1 Indirect stop level 1 Direct stop level 1 Setpoint 2 Modify • The screen shows the actual settings. To modify the settings, move the cursor to the action button Modify and press the Enter key.

  • Page 41: Event History Menu

    Instruction book The upper and lower limit of the setting is shown in grey, the actual setting is shown in black. Use the ↑ or ↓ key of the Scroll keys to modify the settings as required and press the Enter key to accept. If necessary, change the other settings as required in the same way as described above.

  • Page 42: Week Timer Menu

    Instruction book Example of Event History screen • Scroll through the items to select the desired shut-down or emergency stop event. • Press the Enter key to find the date, time and other data reflecting the status of the compressor when that shut-down or emergency stop occurred.
  • Page 43 Instruction book Text on image Week Timer Week Action Schemes Week Cycle Status Week Timer Inactive Remaining Running Time The first item in this list is highlighted. Select the item requested and press the Enter key on the controller to modify. Programming week schemes •...
  • Page 44 Instruction book Week Action Scheme 1 Monday Tuesday Wednesday Thursday Friday Saturday Sunday • A new window opens. The Modify action button is selected. Press the enter button on the controller to create an action. Monday Modify • A new pop-up window opens. Select an action from this list by using the Scroll keys on the controller. When ready press the Enter key to confirm.
  • Page 45 Instruction book Remove Start Stop Pressure Setpoint 1 Modify • A new window opens. The action is now visible in the first day of the week. Monday Start Save Modify • To adjust the time, use the Scroll keys on the controller and press the Enter key to confirm. Monday Start Save...
  • Page 46 Instruction book Monday Time Save Modify • Press the Escape key on the controller. The action button Modify is selected. Use the Scroll keys to select the action Save. Monday Start Save Modify • A new pop-up window opens. Use the Scroll keys on the controller to select the correct actions. Press the Enter key to confirm.
  • Page 47 Instruction book Save Modify Press the Escape key to leave this window. • The action is shown below the day the action is planned. Week Action Scheme 1 Monday - Start Tuesday Wednesday Thursday Friday Saturday Sunday Press the Escape key on the controller to leave this screen. Programming the week cycle A week cycle is a sequence of 10 weeks.
  • Page 48 Instruction book Week Timer Inactive Remaining Running Time • A list of 10 weeks is shown. Week Cycle Week 1 Week 2 Week 3 Week 4 Modify Press twice the Enter key on the controller to modify the first week. •...
  • Page 49 Instruction book Week Timer Week Action Schemes Week Cycle Status Week Timer Inactive Remaining Running Time • A new window opens. Select Week 1 to set the Week Timer active. Week Timer Week Week Timer Inactive Week 1 • Press the Escape key on the controller to leave this window. The status shows that week 1 is active. 2920 7101 21...
  • Page 50 Instruction book Week Timer Week Action Schemes Week Cycle Status Remaining Running Time • Press the Escape key on the controller to go to the main Week Timer menu. Select Remaining Running Time from the list and press the Enter key on the controller to Modify. Week Timer Week Action Schemes Week Cycle...

  • Page 51: Test Menu

    Instruction book 3.15 Test menu Menu icon, Test Function • To carry out a display test, i.e. to check whether the display and LEDs are still intact. Procedure Starting from the Main screen, • Move the cursor to the action button Menu and press the Enter key. •...

  • Page 52: Modifying General Settings

    Instruction book 3.16 Modifying general settings Menu icon, Settings Function To display and modify a number of settings. Procedure Starting from the Main screen, • Move the cursor to the action button Menu and press the Enter key. • Using the Scroll keys, move the cursor to the Settings icon (see below). •...

  • Page 53: General Menu

    Instruction book Example: Selecting the General Settings icon gives the possibility to change e.g. the language, the date, the date format, etc.: Text on image General Language used Time Date Date format Modify • To modify, select the Modify button using the Scroll keys and press the Enter key. •...

  • Page 54: User Password Menu

    Instruction book • Press the Enter key. A screen similar to the one below appears: Text on figure General Language in use Time Date Date format Modify • A screen similar to the one above is shown, a selection bar is covering the first item (Language). Use the ↓...
  • Page 55 Instruction book Function The end customer can activate and choose a personal password. Once the password option activated, it is impossible for not authorized persons to modify any setting. Procedure Starting from the submenu screen (see Modifying general settings), • Using the Scroll keys, move the cursor to the User Password icon (see below) •...

  • Page 56: Access Key Menu

    Instruction book 3.19 Access key menu Menu icon, Access Key Function Only a number of basic Icons will be displayed in the Menu screen. Using the Access Key with the proper access code allows the user to see more Icons, or have access to more parameters. Procedure Starting from the submenu screen (see Modifying general...
  • Page 57 Instruction book Parameters fix speed drive Minimum Factory Maximum setting setting setting Motor running time in star Load delay time (star-delta) Number of motor starts starts/day Minimum stop time Programmed stop time Power recovery time (ARAVF) 3600 Restart delay 1200 Communication time-out Protections Minimum...
  • Page 58 Instruction book Term Explanation Minimum stop Once the compressor has automatically stopped, it will remain stopped for the minimum time stop time, whatever happens with the net air pressure. Consult your supplier if a setting lower than 20 seconds is required. Unloading/ The regulator does not accept illogical settings, e.g.

  • Page 59: Installation

    Instruction book Installation Dimension drawings QGS 40 up to QGS 60 air-cooled compressors 2920 7101 21...
  • Page 60 Instruction book QGS 75 and QGS 100 air-cooled compressors Reference Designation Compressor cooling air outlet Compressor cooling air inlet Compressed air outlet Electrical cable passage Cubicle cooling air outlet 2920 7101 21...

  • Page 61: Installation Proposal

    Instruction book Reference Designation Doors fully open For the dimensions A, L, B and H , contact your supplier. Installation proposal Outdoor/altitude operation The compressor is not designed for installation outdoors. Also, if the ambient temperature can fall down below 0 ˚C (32 ˚F), and if operating above 1000 m (3300 ft) precautions must be taken.
  • Page 62 Instruction book Text on drawing Reference Designation Ventilation proposals Minimum free area to be reserved for the compressor installation All piping to be connected stress free to the compressor. Installation guidelines 1. Install the compressor unit on a solid, level floor suitable for taking its weight. 2.
  • Page 63 Instruction book • Δp = Pressure drop in bar (recommended maximum: 0.1 bar (1.5 psi)) • L = Length of the pipe in m • Q = Free air delivery of the compressor in l/s • d = Inner diameter of the pipe in mm •...

  • Page 64: Pictographs

    Instruction book Pictographs Description Pictographs Reference Designation Read manual before service Rotation arrow Rotation arrow Warning: Voltage Warning: Hot surface Earth connection Take care of voltage, wait 6 min. before removing panel Warning: Automatic start, read the instruction manual, no service with voltage and pressure on Before connecting compressor electrically, consult instruction book for motor rotation direction...

  • Page 65: Operating Instructions

    Instruction book Operating instructions Initial start-up Safety The operator must apply all relevant Safety precautions. Procedure For the position of the air outlet valve and the drain connections, see sections Introduction. 1. Consult the sections Electric cable size, Installation proposal Dimension drawings 2.
  • Page 66 Instruction book Transport fixtures 3. Check that the electrical connections correspond to the local codes and that all wires are clamped tight to their terminals. The installation must be earthed and protected against short circuits by fuses of the inert type in all phases. An isolating switch must be installed near the compressor.
  • Page 67 Instruction book The drain pipes to the drain collector must not dip into the water. If the pipes have been fitted outside the room where freezing is possible, they must be insulated. 7. Check the oil level. The oil level should be between the lower region and the middle in the sight glass. Position of oil level sight-glass 8.

  • Page 68: Before Starting

    Instruction book Incorrect rotation of the drive motor can cause damage to the compressor. Fan direction arrow It is very important to remember to check the direction of rotation of the fan (shown by an arrow on the fan (1)). Before starting Remarks •...

  • Page 69: During Operation

    Instruction book Airlogic² control panel Step Action Switch on the voltage. Check that voltage on LED (7) lights up. Open the air outlet valve. Press start button (10) on the control panel. The compressor starts running and the automatic operation LED (3) lights up. After the motor running time in star (Y-time, see Parameters in section Programmable settings) has elapsed, the drive motor switches over from star to delta and the compressor starts running loaded.
  • Page 70 Instruction book Regulator Airlogic² control panel Checking the oil level Position of oil level sight-glass Regularly check the oil level. During operation, the oil level should be between the lower region and the centre in the sight glass (Gl). If the level is too low: stop the compressor, wait until the compressor has stopped, depressurise the oil system by unscrewing oil filler plug (FC) one turn and wait a few minutes.

  • Page 71: Automatic Restarting

    Instruction book Automatic restarting Description The electronic controller has a built-in function to automatically restart the compressor when the voltage is restored after voltage failure. Whenever the compressor is shut down, the emergency push-button must be pressed or the electricity isolating switch opened. Stopping Regulator Airlogic²...

  • Page 72: Taking Out Of Operation

    Instruction book Procedure Step Action Press stop button (11). Automatic operation LED (3) goes out and the compressor stops after 30 seconds of unloaded operation. To stop the compressor in the event of an emergency, press emergency stop button. Alarm LED flashes (5).

  • Page 73: Maintenance

    Instruction book Maintenance Preventive maintenance schedule Warning Before carrying out any maintenance, repair work or adjustments, proceed as follows: Stop the compressor. • • Press the emergency stop button. • Switch off the voltage. • Close the air outlet valve and open, if provided, the manual condensate drain valve. •...
  • Page 74 Instruction book Preventive maintenance schedule Period Operation Daily Check oil level. Check readings on display. Check that condensate is discharged during loaded operation of the compressor. 3-monthly (1) Check coolers, clean if necessary. Remove the air filter element and inspect. If necessary, clean using an air jet. Replace damaged or heavily contaminated elements.

  • Page 75: Storage After Installation

    Instruction book (*) If available The indicated oil exchange intervals are valid for standard operating conditions (see section Reference conditions and limitations) and nominal operating pressure (see section Compressor data). Exposure of the compressor to external pollutants, operation at high humidity combined with low duty cycles or operation at higher temperatures may require a shorter oil exchange interval.

  • Page 76: Adjustments And Servicing Procedures

    Instruction book Adjustments and servicing procedures Air filter IMPORTANT If you do not replace the filtering element when needed, permanent dirt build-up will result. This reduces the air inflow to the compressor and could damage the oil separator and the compressor.

  • Page 77: Oil And Oil Filter Change

    Instruction book Oil and oil filter change Warning The operator must apply all relevant Safety precautions. Always drain the compressor oil at all drain points. Used oil left in the compressor can contaminate the oil system and can shorten the lifetime of the new oil. Never mix lubricants of different brands or types as they may not be compatible and the oil mix will have inferior properties.

  • Page 78: Oil Separator Change

    Instruction book Oil drain plugs 4. Collect the oil and deliver it to the local collection service. Refit and tighten the drain and vent plugs after draining. Re-tighten the top connection of the oil cooler. 5. Remove the oil filter (OF). Clean the seat on the manifold. Oil the gasket of the new filter and screw it into place.

  • Page 79: Coolers

    Instruction book Oil separator components 3. Remove the oil separator (OS). 4. Clean the seat on air receiver/oil tank (AR). Place the new separator into the air receiver/oil tank and replace the vessel cover (Ac) with the bolts. Take care that no dirt drops into the system. Refit and tighten filler plug (FC). 5.

  • Page 80: Filtering Panel

    Instruction book Never use a high pressure water jet to clean the compressor. Instructions for air-cooled compressors 1. Stop the compressor, close the air outlet valve and switch off the voltage. 2. Remove any dirt from the coolers with a fibre brush. Never use a wire brush or metal objects. 3.

  • Page 81: Safety Valves

    Instruction book Safety valves Location of safety valve Operating Operate the safety valve by unscrewing the cap one or two turns and retighten it. Testing Before removing the valve, depressurise the compressor. See section Problem solving. Valve (SV) can be tested on a separate air line. If the valve does not open at the set pressure stamped on the valve, it needs to be replaced.

  • Page 82: Problem Solving

    Instruction book Problem solving Warning Before carrying out any maintenance, repair work or adjustment, press the stop button, wait until the compressor has stopped, press the emergency stop button and switch off the voltage. Close the air outlet valve and lock it if necessary. Depressurize the air connection between the minimum pressure valve and the compressor outlet ball valve.
  • Page 83 Instruction book Condition Fault Remedy Compressor air output or pressure Air consumption exceeds air Check equipment connected below normal delivery of compressor Choked air filter element Replace filter element Solenoid valve malfunctioning Replace valve Leak in control air flexibles Replace leaking flexibles Inlet valve does not fully open Have valve checked Oil separator clogged...
  • Page 84 Instruction book Condition Fault Remedy Thermostatic bypass valve Have valve tested malfunctioning Air cooler clogged Clean cooler Compressor element out of order Consult your supplier Oil filter clogged Replace 2920 7101 21...

  • Page 85: Technical Data

    Instruction book Technical data Electric cable size and fuses Important • The voltage on the compressor terminals must not deviate more than 10% of the nominal voltage. It is however highly recommended to keep the voltage drop over the supply cables at nominal current below 5% of the nominal voltage (IEC 60204-1).
  • Page 86 Instruction book Ambient temperature Cable section 30 °C 40 °C 45 °C 50 °C 55 °C 120 mm² < 206 A < 179 A < 163 A < 146 A < 126 A Installation method C according table B.52.1. Single-core or multi-core cable on a wooden wall Maximum allowed current in function of the ambient temperature for installation method C Ambient temperature Cable section...
  • Page 87 Instruction book • Install the prescribed fuse on each cable • Parallel supply cable (2 x 3 phases + PE - configuration (2)): • Add 10 % to the total compressor current (I Pack or I FF from the tables) and divide by 2 •...
  • Page 88 Instruction book Ambient temperature Cable section 30 °C (86 °F) 40 °C (104 °F) 45 °C (113 °F) 50 °C (122 °F) 55 °C (131 °F) (AWG or kcmil) < 175 A < 154 A < 144 A < 131 A <...
  • Page 89 Instruction book Maximum allowed current in function of the wire size AWG or kcmil Maximum current < 30 A < 50 A < 65 A < 85 A < 100 A < 115 A < 130 A < 150 A <...

  • Page 90: Reference Conditions And Limitations

    Instruction book • Install 80 A fuses on each cable. The indicated fuse size is the maximum fuse size in order to protect the motor against short circuit. For cUL fuse HRC form II, for UL fuse class RK5. Reference conditions and limitations Reference conditions Air inlet pressure (absolute) Air inlet pressure (absolute)
  • Page 91 Instruction book Units 7.5 bar 8 bar 10 bar 13 bar 100 psi 125 psi 150 psi 175 psi Unloading pressure bar(e) 4.1 Minimum setting psig 59.5 59.5 59.5 59.5 59.5 59.5 59.5 59.5 Loading pressure bar(e) 6.4 11.9 11.4 Factory setting psig Loading pressure...

  • Page 92: Options

    Instruction book Options 10.1 Automatic drain Description The automatic drain valve allows all air consumption to be avoided while the compressor is not running. Overview • There is no air loss due to the level detection system : an inductive sensor detects the level of water and thus controls the opening of the electric bleed valve.

  • Page 93: Heavy Duty Filter

    Instruction book 10.2 Heavy duty filter Description This system is equipped for "high efficiency" air filtration in order to improve the quality of the air intake and to preserve the compressor's oil and internal filter components. This option is particularly useful in very dusty surroundings. Overview •...
  • Page 94 Instruction book The quality of the air drawn in by a compressor is essential. Low quality air results in the following : • Fast pollution of the oil thus an increase in oil change cycles. • Increased pollution of the air and oil filtering components that increases the deterioration of the mechanical components in the compressor, screw block, ...

  • Page 95: Rotation Direction Indicator - Phase Controller

    Instruction book Assembly Technical features Filter medium: Degree of filtration : 90% of the dust emitted is filtered. Total nominal flow : 6 000 m3/h Filter panel number : Initial charge loss : 75 Pa Dimensions Width : 500 mm Height : 500 mm Thickness :...

  • Page 96: Remote Starting And Stopping

    Instruction book 10.5 Remote starting and stopping Description This option allows the compressor to be remotely started and stopped. However, in all cases, stopping the compressor at the machine itself is essential. If the compressor is shut down from remote it may be restarted from remote as well.

  • Page 97: Guidelines For Inspection

    Instruction book Guidelines for inspection Guidelines On the Declaration of Conformity / Declaration by the Manufacturer, the harmonised and/or other standards that have been used for the design are shown and/or referred to. The Declaration of Conformity / Declaration by the Manufacturer is part of the documentation that is supplied with this compressor.

  • Page 98: Pressure Equipment Directives

    Instruction book Pressure equipment directives Components subject to 97/23/EC Pressure Equipment Directive The following table contains the necessary information for the inspection of all pressure equipment of category II and higher according to the Pressure Equipment Directive 97/23/EC and all pressure equipment according to the Simple Pressure Vessel Directive 87/404/EEC.

  • Page 99: Declaration Of Conformity

    Instruction book Declaration of conformity Typical example of a Declaration of Conformity document (1): Contact address: Quincy Compressor 701 North Dobson Avenue Bay Minette, AL 36507 United States 2920 7101 21...
  • Page 102 Quincy Compressor Products: 217 222.7700 © 2012 Quincy Compressor E-mail: info@quincycompressor.com All Rights Reserved. Litho in U.S.A. Website: quincycompressor.com...

This manual is also suitable for:

Qgs 50Qgs 60Qgs 75Qgs 100

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