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 GAS COMPRESSORS / BOOSTERS 

 GAS & AIR MIXING SYSTEMS 

 AIR BLOWERS & VACUUM PUMPS 

 

The Utile Engineering Co. Ltd.

 

Irthlingborough, Northamptonshire, NN9 5UG, ENGLAND 

Telephone: + 44 (0) 1933 650216   Facsimile: + 44 (0) 1933 652738   Email: sales@utileengineering.com   

www.utileengineering.com 

10 

IC182

 

 

 

Maintenance 

Fully trained and competent staff must carry out any maintenance work. Utile Engineering offers contract maintenance 
services if required contact our service department. 
When carrying out any maintenance and inspections always follow the health and safety guidelines on page 4. 

A regular correct maintenance plan is essential to good operational reliability and a long service life for your machine. As 
operating conditions vary, no exact timings can be specified for wear checks, repairs and inspections, however the following 

plan can be used as a guide until time scales to better suit the machines environment are found. 
 

The machine, ancillaries and surrounding area should be kept as clean as possible. 
 

Ensure all items are properly held and supported during all aspects of maintenance as not to pose a problem for health and 
safety. Observe all lifting points and apply care when handling the equipment. 

 
Ensure all machines and associated pipework have cooled down sufficiently before touching and attempting any 

maintenance. 
 

Typical tools required for maintenance include: - 
Set of spanners   

 

Pipe Wrenches   

 

 

Circlip Pliers 

Set of screwdrivers 

 

Vernier Gauge / Micrometer 

 

Two-leg Pulley drawer 

Set of Allen Keys   

 

Hammer / mallet   

 

 

Feeler Gauges 

 
Typical bolt tightening torques can be seen on page 6. 
New gaskets must be fitted every time the machine is dismantled. 

Bearings and seals are recommended to be replaced after 15000 operating hours or 2 years whichever is sooner. 
Blades must be replaced regardless of wear after 20000 operating hours as failure due to fatigue could cause serious 

damage. 
 

After maintenance the machine and equipment must be treated, as new and all pre-commissioning checks should be made. 
Install all protective devices and controls properly after completion of work. Ensure all cabling, unions and guards are 

correct, secure and in place. Dispose of any used oil and cleaning solutions as prescribed by law. 

 

Maintenance 

 

MAINTENANCE PLAN 

DAILY CHECKS 

 

QUARTERLY CHECKS 

TASK 

CHECK 

 

TASK 

CHECK 

Check / Fill lubricator reservoir 

 

  Check machine for blade wear. 

 

Check Belt condition/Tension (Hourly for 
running in period). 

 

  Check control panel for wiring, cleanliness and 

function of all panel features. (if applicable) 

 

Drain all vessels, condensate traps, outlet 

filters manually 

 

  Check function of emergency stop button and 

local motor isolator. (if applicable) 

 

Clean inlet filters (Daily for 1

st

 week). 

 

  Check motors for excessive vibration and 

damage. 

 

 

 

  Check function of pressure gauges. 

 

WEEKLY CHECKS 

  Check function of non-return valves 

 

Check lubricator drip rate 

 

  Check function of pressure relief valves 

 

Check belt condition / tension 

 

   

 

Clean inlet filters (After for 1

st

 week). 

 

   

 

Run Standby machine for a few minutes. 

 

   

 

 

 

 

YEARLY CHECKS 

MONTHLY CHECKS 

  Clean lubricator and oil lines 

 

Check function and operation of all valves. 

 

  Check flanges and joints for leaks. 

 

Check differential pressure across filters (clean 
and replace if necessary). 

 

  Clean internally vessels, condensate traps, 

filters (including elements). 

 

Check function and operation of autodrains / 

condensate lines. 

 

  Inspect machine internally (at least once a 

year) 

 

Clean fins on machine and motors 

 

   

 

 

Summary of Contents for L175HP

Page 1: ...Ltd Irthlingborough Northamptonshire NN9 5UG ENGLAND Telephone 44 0 1933 650216 Facsimile 44 0 1933 652738 Email sales utileengineering com www utileengineering com 1 IC182 Installation Operation Maintenance Instructions Model L95HP L175HP Gas Compressor Serial Number Site Location Installation Date ...

Page 2: ...ment Your attention is drawn to the health and safety information on page 4 Until the equipment into which the machine has been incorporated and the said equipment declared to be in conformity with the Machinery Directive they must not be put into service Foreword The L series rotary gas compressor has been developed based on many years of experience in the compressor and vacuum pump industry Usin...

Page 3: ...ing vane compressors and vacuum pumps are multi cell machines which work on the displacement principle They provide a constant low pulsation supply of air or gas The machines have a cylindrical bored housing The rotor which is also cylindrical is fitted eccentrically in the cylinder so that a crescent shaped working chamber is formed Movable rotor vanes are fitted in the longitudinal grooves in th...

Page 4: ... accidentally during the maintenance or service period Safety trips emergency stop buttons and other such devices if fitted are to be checked regularly to ensure that they continue to function correctly and will protect the installation and personnel in the event of an emergency NO attempt should be made to touch the machine whilst it is rotating Particular care is needed when checking rotor clear...

Page 5: ...at Max Press at Max Speed Air C Moment of Inertia kg m2 0 015 0 021 0 029 Noise Level at 1 metre db A 88 92 88 92 88 92 Weight kg 85 105 125 Note Machine must not be used on any other gas than originally specified Utile Engineering must be consulted if traces of any other gas are introduced into the machine Packaging The packaging conforms to the relevant regulations The symbols used on the packag...

Page 6: ... Torques Size Torque Size Torque M4 4 00 Nm M12 70 00 Nm M5 6 00 Nm M16 100 00 Nm M6 10 00 Nm M20 150 00 Nm M8 18 00 Nm M24 250 00 Nm M10 40 00 Nm Location The machine should be installed in a clean dry well ventilated area Allow adequate space and facilities for service inspection and future expansion A minimum of 0 75m of working space around the machine is recommended Adequate space around the ...

Page 7: ...e shafts until four identical measurements are obtained To check for parallel alignment see fig 5 Place a straight edge across the coupling The hubs will be in correct alignment when the straight edge contacts the 4 points squarely Drive Belts 1 Remove any dirt oil etc from all mating surfaces Place bush in hub and match half holes on both shafts 2 Mount assembly in desired position on shafts ensu...

Page 8: ...ylinder Note this should be completed with the coupling drive belts removed Recheck coupling drive alignment and retension see page 7 Ensure all equipment is installed and earthed in accordance with current legislation Check all piping connections If the system is to be pressure tested all gauges and pressure switches must be isolated or removed Maximum purge or pressure test is 1 50 times the wor...

Page 9: ...patched from our works If it found necessary to alter the oil feed then proceed as follows using fig 7 1 Remove the cover 1 to expose two pistons 2 2 Slacken off the locknuts 3 and adjust the feed as required To increase the flow turn the two adjusting screws 4 clockwise or anti clockwise to decrease Lubricator Maintenance Refill the oil reservoir regularly to ensure that the oil level is not allo...

Page 10: ...ry time the machine is dismantled Bearings and seals are recommended to be replaced after 15000 operating hours or 2 years whichever is sooner Blades must be replaced regardless of wear after 20000 operating hours as failure due to fatigue could cause serious damage After maintenance the machine and equipment must be treated as new and all pre commissioning checks should be made Install all protec...

Page 11: ... temperature excessive 1 Machine operating at higher duty than specified 1 Check rating 2 Blocked intake filter 2 Clean intake filter 3 Insufficient or wrong lubrication 3 Use correct lubrication and feed rates 4 Warped Sticking blades 4 Replace blades Excessive blade wear 1 Insufficient lubricant to cylinder 1 Inspect clean oil lines oil holes 2 Incorrect lubricant 2 Use correct lubricant 3 Dirty...

Page 12: ...r any signs of excessive wear or scuffing and for excessive slot wear If there is any sign of cylinder rubbing completely dismantle the machine Factory reconditioning is recommended but if work has to be carried out on site we advise you most strongly to contact Utile Engineering Service Department for advice During inspection determine if the correct oil is being used Bearings cylinder wall rotor...

Page 13: ...3mm Rotor Cylinder 0 10mm 0 10mm 0 10mm Reassembly should start with the preparing of the rotor and shaft assembly by the fitting of the replacement seal sleeve if required and the inner races of the both roller bearings 6 1 The seal sleeve 9 are retained on the clean shaft using LOCTITE 648 adhesive or equivalent and should be pushed hard against the rotor face It is essential that the width of t...

Page 14: ...efore refitting lubrication system 6 22 Reposition support plate 12 complete with oil pump assembly and tighten with clamp screw 34 Refit drive pulley 48 and timing belt 51 Prime oil pipes before use 7 Spare Parts A stock of the main wearing parts at the installation site is important to the constant availability and smooth running of the machine We recommend the following parts and quantities to ...

Page 15: ...5 T 1035 1 20 MECHANICAL SEAL F 1113 F 1113 F 1113 2 21 BEARING SEAL F 1067 V F 1067 V F 1067 V 2 22 ROLLER BEARING DRIVE END H 1119 H 1119 H 1119 1 23 ROLLER BEARING REAR END H 1120 H 1120 H 1120 1 24 O RING F 1070 F 1070 F 1070 2 25 SEALED BALL BEARING H 1052 H 1052 H 1052 2 26 CIRCLIP B 1065 B 1065 B 1065 2 27 THRUST WASHER B 1066 B 1066 B 1066 1 28 LOCKNUT B 1142 B 1142 B 1142 2 29 KEY N 1044 ...

Page 16: ...s or delay or any other consequential cost associated with the alleged defect are incurred 2 Malfunction caused by fair wear and tear abnormal conditions of use accident neglect or misuse of equipment or improper storage 3 Deviation from operating specifications or other special terms of sale 4 Improper operation maintenance or repair 5 Damage resulting during shipment or installation by other tha...

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