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The Utile Engineering Co. Ltd.

27/11/03

Irthlingborough, Northamptonshire. England
Tel: +44 (0) 1933 650216
Fax: +44 (0) 1933 652738

4

IC162

Read the installation and operating instructions carefully.
Rotating machinery and pressurised components, which may contain toxic, flammable or otherwise hazardous
media are potentially dangerous equipment if not operated and maintained correctly. It is imperative that all users
of such equipment fully educate themselves to the potential dangers and satisfy themselves that the personnel
responsible for installing, testing, commissioning, operating and maintaining the plant are competent to do so.
Instruction manuals are provided for guidance but must assume some basic level of competence by users. If there
are any doubts or ambiguities concerning correct procedures, ask Utile Engineering. DO NOT TAKE RISKS.

Certain machinery can generate high levels of noise which can be harmful if exposed to it for lengthy periods of
time. Various codes of practice are in existence and users must ensure that adequate precautions are taken to
prevent a health hazard to employees or third party.

Equipment with internal pressures above or below ambient pressures can create a hazard. Before attempting to
investigate problems, service or maintain equipment, it must be safely depressurised or pressurised to ambient
conditions. Also since the gaseous medium may be flammable, toxic, corrosive or otherwise hazardous it may be
necessary to purge the installation with an inert gas, such as nitrogen. Special precautions are necessary for
certain gases and the user must ensure that adequate procedures are implemented.

Moving parts of machinery must not be touched and all such parts must be adequately guarded. Suitable guards
are provided and must be securely retained in position at all times.

Before commencing maintenance, servicing or making other adjustments, the prime mover and other equipment
must be isolated electrically or otherwise immobilised to prevent accidental start-up. In this vein, a fully qualified
electrician should carry out all electrical work and all electrical equipment should be isolated before it is touched
and pneumatic or hydraulic controls depressurised and made safe. Procedures must also exist to ensure that
electrical or other inputs cannot be restored 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 clearances. Any movement of rotors may trap fingers.

Most machines, certain pipes and ancillaries become hot during operation whilst certain machines with sub-zero
inlet temperatures may result in very cold surfaces. If it is possible for personnel to come into contact with such
surfaces unknowingly or accidentally they should be guarded.

If severe vibration is observed, the cause of this should be immediately investigated and the situation rectified.
Excessive vibration can lead to fatigue and other failures. Similarly, if during operation a significant change is
noticed in the level of vibration, noise, temperature or any other parameter, the cause of such changes must be
determined, and the cause rectified. Inlet filters must be inspected regularly so that liquid or debris is not allowed to
enter the machine, which could cause damage and consequently injury to personnel.

During routine maintenance, coupling alignment should be checked for misalignment.
Only approved lubricants must be used and quantities, etc must be checked regularly.

Before restarting after servicing, all nuts, set screws, etc must be checked for tightness, check all joints, for leaks
and carry out purging as necessary before introducing the process gas. Also, before start-up, check the machine
inlet and outlet isolating valves are open both non-return valves (if fitted) are the correct orientation.

Adjacent pipework and equipment must not impose undue forces and moments on the machinery flanges.
All welding work must be carried out be an approved gas coded welder.
In order to prevent reverse rotation of machines, it is ESSENTIAL that a non-return valve be installed in the inlet
pipework. Otherwise a hazardous situation can arise during a normal shutdown or if the prime mover power supply
is interrupted for a period of time.

The environment around the installation may need to be monitored in order to detect gas leaks etc., and
consideration must be given to the installation of gas detecting equipment, and the class of electric equipment.
All personnel working in or passing through the area should be adequately warned by signs and trained to exercise
appropriate safety precautions. Ensure the correct personal protective equipment is worn at all times.

Health and Safety

Summary of Contents for LW700

Page 1: ...td 27 11 03 Irthlingborough Northamptonshire England Tel 44 0 1933 650216 Fax 44 0 1933 652738 1 IC162 Installation Operation Maintenance Instructions Model LW700 Blower Vacuum Pump Serial Number Site Location Installation Date ...

Page 2: ...ipment 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 LW rotary blowers and vacuum pumps have been developed based on many years of experience in the compressor and vacuum pump industry Using modern design techniques and production methods coupled with rigorous testing and ...

Page 3: ...k 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 the rotor centrifugal force and the force of the air or gas presses the b...

Page 4: ...rgency 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 clearances Any movement of rotors may trap fingers Most machines certain pip...

Page 5: ...ncillary components are packed suitably within the case The packaging and contents should be received in good condition When unpacking do not remove the inlet outlet protection covers The contents should be inspected against the advice note notify Utile Engineering within 3 days of any items which are damaged or are missing followed by a written claim within seven days of the goods being delivered...

Page 6: ...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 motor and machine particularly any fan inlets is also nec...

Page 7: ...arallel 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 ensuring both shafts are parallel and in correct alignment use a straight ...

Page 8: ...ll equipment is installed and earthed in accordance with current legislation 9 Check all piping connections 9 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 working pressure 9 Check all protective devices ensuring they are working correctly 9 Ensure personnel are adequately protected from accident...

Page 9: ... found necessary to alter the oil feed then proceed as follows using fig 7 1 Loosen off locking nut 8 from adjusting screw retaining bracket 2 To decrease flow back off external nut 9 towards shoulder of adjusting screw To increase flow tighten external nut 9 onto adjusting screw retaining bracket 3 Tighten locking nut 8 onto adjusting screw retaining bracket Lubricator Maintenance Refill the oil ...

Page 10: ...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 o...

Page 11: ...ure excessive 4 Warped Sticking blades 4 Replace blades 1 Insufficient lubricant to cylinder 1 Inspect clean oil lines oil holes 2 Incorrect lubricant 2 Use correct lubricant 3 Dirty inlet air gas 3 Clean inspect intake Excessive blade wear 4 Excessive operating temperature 4 See remedies for excessive discharge temperature 1 Worn bearing 1 Replace bearing 2 Excessive blade wear 2 Replace blades c...

Page 12: ... 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 shaft assembly and blades should show a polished surface with a light film of oil Hard baked deposits indicate inferior oil dirt or excessive temperature 3 Reassembly after Blade Inspection Reassemble in the re...

Page 13: ... 6 1 The spacing rings 6 are retained on the clean shaft using LOCTITE 648 adhesive or equivalent and should be pushed hard against the rotor face with the slot away from the rotor face It is essential that the width of the seal sleeve is identical to the one it is replacing or internal clearances may be effected causing serious machine damage 6 2 The drive end roller bearing inner race 15 can now...

Page 14: ...semble ballast valve assembly 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 be kept in stock at the installation site Part Number Description LW700 Quantity Blade S 8808 1 6 Ball Bearing H 1028 1 Roller Bearing H 1029 1 Shaft Seal F 1089 V 4 Gask...

Page 15: ...Shaft Seal F 1089 V 4 48 Socket Head Cap Screw Actuator G 1210 4 18 O Ring F 1071 2 49 Gasket Body S 9288 1 19 Circlip B 1048 2 50 Gasket Cover S 9289 1 20 Fan S 9685 1 51 Non Return Valve S 9287 1 21 Fancowl Assembly S 8981 1 52 Csk Socket Head Cap Screw G 1135 2 22 Ballast Manifold S 13063 1 53 Washer NRV S 9281 2 2 23 Oil Drip Indicator S 8899 2 54 Gasket Coverplate K 1033 2 24 Hex Head Screw E...

Page 16: ...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 than company authorised personnel 6 Freight charges for goods returned to ...

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