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Dräger PAS MAC4000 Operator's Handbook Manual
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Dräger PAS MAC4000 Operator's Handbook Manual

Mobile breathing-air compressor
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MOBILE BREATHING-AIR
COMPRESSOR
PAS MAC4000
(Incorporating pressure swing dryer
and CO + CO
suppression)
2
OPERATOR'S HANDBOOK
Draeger Safety UK Ltd
Ullwater Close, Kitty Brewster Industrial Estate,
Blyth, Northumberland, NE24 4RG, UK
o
Tel N
: +44 (0) 1670 352891
o
Fax N
: +44 (0) 1670 356266
E‐mail:  
 
marketing@draeger.ltd.uk
Website: 
www.draeger.ltd.uk

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Summary of Contents for Dräger PAS MAC4000

  • Page 1 MOBILE BREATHING-AIR COMPRESSOR PAS MAC4000 (Incorporating pressure swing dryer and CO + CO suppression) OPERATOR’S HANDBOOK Draeger Safety UK Ltd Ullwater Close, Kitty Brewster Industrial Estate, Blyth, Northumberland, NE24 4RG, UK Tel N : +44 (0) 1670 352891 Fax N : +44 (0) 1670 356266 E‐mail:  ...

  • Page 2: Table Of Contents

    CONTENTS Section Page INTRODUCTION GENERAL ARRANGEMENT 2.1 PAS:MAC4000 ON SITE 2.2 INSTRUMENT PANEL AND GAUGES/OUTLETS 2.3 GENERAL INFORMATION SAFETY PRECAUTIONS – GENERAL OPERATING INSTRUCTIONS 4.1 SITING 4.2 PRE-OPERATION DAILY CHECKS 4.3 TOWING THE COMPRESSOR 4.4 START UP PROCEDURE 4.5 SHUTDOWN PROCEDURE 7 - 8 9 -10 WARNING SEQUENCES...

  • Page 3: Introduction

    INTRODUCTION Draeger provides a range of breathing-air systems which are completely self-contained, fully mobile and specially designed to deliver breathing quality compressed air to operatives wearing air-fed respiratory equipment when working in hazardous atmospheres such as occur in the nuclear, petrochemical, pharmaceutical and other industries. The systems provide breathable air conforming EN 12021.

  • Page 4: Pas:mac4000 On Site

    MAC4000 ON SITE PAS:MAC4000 - 2 - MAR 2011...

  • Page 5: Instrument Panel And Gauges/Outlets

    INSTRUMENT PANELS Ignition switch Glow plug Hour meter Vent valve lamp End of Panel Low fuel level warning High temperature warning 4 x CEJN and 1 x ½” Dyna-Quip couplings Unregulated LP alarm Demand HP cylinder supply indicator mask supply alarm pressure pressure...

  • Page 6: General Information

    GENERAL INFORMATION ENGINE Kubota D722 BB-EC, 3-cylinder, water-cooled diesel engine COMPRESSOR Hydrovane rotary vane 037C-V05 AFTERCOOLER Outlet temperature within 5°C of ambient FILTRATION Purifies air to breathing quality conforming to EN 12021 A pressure swing dryer reduces the dewpoint to –40°C and includes a CO and CO suppression dryer CHASSIS...

  • Page 7: Safety Precautions General

    SAFETY PRECAUTIONS GENERAL WARNING Run the engine in a well-ventilated area. The machine should be as level as possible in both planes whilst in operation. Operate unit at least 1 metre away from buildings and flammable objects. Do not smoke or allow flames in the refuelling area. Avoid inhaling the exhaust fumes.

  • Page 8: Operating Instructions

    OPERATING INSTRUCTIONS This machine is only to be used by fully trained personnel in possession of a current approved operator’s certificate. SITING Never run the engine in an enclosed or confined area. The unit should be operated on reasonably level ground and sited to prevent the re- entrainment of exhaust gases and other toxic atmospheres.

  • Page 9: Start Up Procedure

    START UP PROCEDURE Raise canopy and carry out pre-start checks as manual. Close canopy. Place the wind direction indicator on the air intake. Raise air intake to vertical position and orientate unit so that the tow bar points downwind. Open canopy door. Turn ignition switch key clockwise, first position is ‘ON’...
  • Page 10 Stop engine (HP alarms will sound). Vent trapped air from HP system by opening the vent valve on the centre cylinder. Lower air intake and close door on canopy. PAS:MAC4000 - 8 - MAR 2011...
  • Page 11 WARNINGS IF A WARNING ALARM SOUNDS, IMMEDIATELY EVACUATE ALL BREATHING APPARATUS WEARERS TO A SAFE AREA AN AUDIBLE AND VISUAL ALARM SHOWS: Low compressor pressure Malfunction of compressor or engine Excessive demand Restricted air intake Low cylinder pressure Low fuel level Residual pressure from the cylinders remains after ignition is turned off FOR FURTHER INSTRUCTIONS AND DETAILED SERVICING METHODS...

  • Page 12: Warning Sequences

    WARNING SEQUENCES Warnings are given by a combined siren and flashing beacon. Awareness of low fuel is signalled by an audible alarm and lamp. If the primary compressor pressure drops to 8 bar, the siren sounds and the high-pressure cylinders automatically come into operation. If the cylinder pressure drops to about 40 bar, the siren sounds to warn that the reserve supply is running low.

  • Page 13: Maintenance

    MAINTENANCE QUICK REFERENCE MAC 4000 – Service Schedule (excluding pre-start checks) Period Operation Every Every Every Every Every Every Every Every Every Every Every Annually 1000 1500 2000 3000 Compressor – Hydrovane VO5  Check oil level  Clean air intake filter ...
  • Page 14 Period Operation Every Every Every Every Every Every Every Every Every Every Every Annually 1000 1500 2000 3000  Check water jacket (radiator interior)  Check injection pump  Check fuel injection timer Breathing-air Filtration  Change prefilter element  Change duplex filter coalescing element...

  • Page 15: 6.2.1 Compressor

    6.2.1 Compressor PAS:MAC4000 - 13 - MAR 2011...
  • Page 16 6.2.2 Replacing compressor intake filter Securing clip (2 off) Filter cover Dust discharge valve Filter element Release the securing clips retaining the intake filter cover Remove the intake filter cover Remove the filter element and replace Refit the intake filter cover ensuring that the dust discharge valve points directly downwards PAS:MAC4000 - 14 -...
  • Page 17 6.2.3 Checking the Oil Level Always observe safety precautions when working on the compressor. See page 5 Every Day Checking the Oil Level 1 Check the oil level when the compressor is cold (prior to start up), stopped and at zero pressure. 2 Oil should fill the sight glass (A).

  • Page 18: 6.3.1 Engine

    6.3.1 Engine PAS:MAC4000 - 16 - MAR 2011...
  • Page 19 6.3.2 Changing the Engine Oil PAS:MAC4000 - 17 - MAR 2011...
  • Page 20 6.3.3 Fuel PAS:MAC4000 - 18 - MAR 2011...
  • Page 21 6.3.4 Checking the Fuel Pipes PAS:MAC4000 - 19 - MAR 2011...
  • Page 22 6.3.5 PAS:MAC4000 - 20 - MAR 2011...

  • Page 23: Approved Oils

    APPROVED OILS 6.4.1 Compressor – Hydrovane VO4 Fluid Force Red 2000 oil for 2000-hour oil change (ambient temperature range 0°C to +40°C). (OIL0001) Note 1: Not to be mixed with any other type of lubricant. Note 2: For applications where the compressor is stored or used outside in winter then we recommend using Fluid Force Blue HPO synthetic compressor oil.

  • Page 24: Overtemperature Shutdown

    OVERTEMPERATURE SHUTDOWN The unit is fitted with a solenoid-operated fuel line shut off system which is activated in the event of either overtemperature compressor oil or low pressure engine oil. Problem Solution Engine will not start 1. Is there enough fuel? Top up fuel tank Compressor not fully Wait...

  • Page 25: Ba Filtration

    BA FILTRATION      Item Description Part N Service Interval Pre-filter element FIL0346 2000 hours/12 months Duplex element – coalescing FIL0347 2000 hours/12 months Duplex element – activated carbon FIL0059 1000 hours/6 months Hopcalite element FIL0450 2000 hours/12 months Final carbon element FIL0451 2000 hours/12 months...

  • Page 26: Chalwyn Valve

    CHALWYN VALVE PAS:MAC4000 - 24 - MAR 2011...
  • Page 27 6.7.1 Adjustment PAS:MAC4000 - 25 - MAR 2011...
  • Page 28 6.7.2 Maintenance PAS:MAC4000 - 26 - MAR 2011...

  • Page 29: Pressure Swing Adsorption Dryer

    PRESSURE SWING ADSORPTION DRYER Introduction These packages provide a complete air treatment package for breathing-air applications as follows:- Heatless desiccant drying for the removal of water vapour Adsorbent for the removal of CO Integral after filtration for the removal of particulate matter. The dryers are of the double adsorber type, fully automatic in operation and continuously rated.
  • Page 30 Whilst one adsorber is on drying duties the other is reactivating. A small bleed of air is passed from the drying adsorber to the activating adsorber via the bleed orifice incorporated in the non-return valve. This very dry air passes through the desiccant in the opposite direction, desorbing the previously adsorbed water.
  • Page 31 Dryer fails to sequence  Replace timer Dryer fails to dry correctly  Check inlet temperature is not too high  Check inlet flow is not excessive  Check inlet pressure is not too low  Replace cartridges  Check pre-filtration and associated autodrain ...