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The Utile Engineering Co. Ltd.

28/07/04

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

14

IC101

Reassemble rear end
6.13 

Refit sliding blades (7) in their slots after lightly smearing with oil and removing any high spots with fine
emery cloth. Ensure the blades are orientated correctly in their slots.

6.14 

Position the bearing seal (14) into position in the coverplate (3) ensuring that the tension spring is facing
the rotor.

6.15 

Press the outer race of roller bearing (11) into position in the coverplate (3).

6.16 

If coverplate gasket (24) has been replaced, it is essential that they are the same thickness as the
originals, otherwise internal clearances will be affected and could cause serious damage. Lightly smear the
gasket with oil before replacing.

6.17 

Place rear coverplate assembly onto cylinder (1) via location dowels (23) and bolt with 4 screws (20) and
with coverplate gaskets (24) in place.

6.18 

Ensure bearing assembly is in place on the shaft with the circlip (19).

6.19 

Assemble the two seals (30) and felt seal (31) into the rear end cap (5). Both seals (30) are fitted with the
tension spring facing the rotor.

6.20 

Fit the thrust washer (15) against the bearing (14) and with the end cap gasket (26) lightly oiled and in
position, carefully slide the end cap assembly onto the coverplate taking care not to damage the seal lips
on the shaft, bolt in place using three screws (22).

6.21 

Position coupling (32) in the end of the shaft, ensuring the shaft drive pin (33) fits into the coupling slot.

6.22 

Place oil pump gasket (28) in position, ensuring it has been lightly oiled to assist assembly. Bolt oil pump
assembly (27) using screws (29).

Check that the shaft rotates freely by hand before refitting oil pipes. 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 be kept in stock at the installation site.

Part Number

Description

LGA12

LGA18

LGA26

Quantity

Blade

S 8331/1

S 8331/2

S 8331/3

6

Ball Bearing

H 1062

H 1062

H 1062

1

Roller Bearing – Drive End

H 1061

H 1061

H 1061

1

Roller Bearing – Rear End

H 1020

H 1020

H 1020

1

Mechanical Seal

F 1115

F 1115

F 1115

1

Bearing Seal – Drive End

F 1200

F 1200

F 1200

1

Bearing Seal – Rear End

F 1047/V

F 1047/V

F 1047/V

1

Felt Seal

F 1030

F 1030

F 1030

1

Oil Pump Seal

F 1052/V

F 1052/V

F 1052/V

2

Gasket – Coverplate

K 1062

K 1062

K 1062

2

Gasket – End Cap – Drive End

K 1070

K 1070

K 1070

1

Gasket – End Cap – Drive End

S 8296

S 8296

S 8296

1

Drive Belt / Drive Coupling

1

Always quote the machine serial number when ordering spare parts.

After Sales Service

Contact the address or telephone number shown at the bottom of each page or our local distributor, for any after
sales service, maintenance or service problems.

Contract maintenance, service exchange machines or a site visit by a Utile Engineering Service Engineer can also
be arranged in the same manner.

Utile Engineering can also provide Training Programs for all your requirements, from maintenance repair to
operator and supervisor training. They are structured to give specialist knowledge of our products and procedures
including use of authorised spares. The enacting of the Health and Safety at Work Act focused attention on the
responsibility of all parties, manufacturers, users and repairers on the repair of equipment. We strongly recommend
that repairs should be carried out to the original specification using authorised replacement parts where necessary.

Spare Parts
After Sales Service

Summary of Contents for LGA12

Page 1: ...Ltd 28 07 04 Irthlingborough Northamptonshire England Tel 44 0 1933 650216 Fax 44 0 1933 652738 1 IC101 Installation Operation Maintenance Instructions Model LGA12 26 Gas Compressor Serial Number Site Location Installation Date ...

Page 2: ...pment 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 LGA series rotary gas compressor has 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 high...

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: ...r general protection The ancillary 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...

Page 6: ...e 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 necessary to facilitate cooling airflow Where several machines are installed in close proximity care must be taken to ensu...

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

Page 8: ...ve belts removed 9 Recheck coupling drive alignment and retension see page 7 9 Ensure all 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 ensuri...

Page 9: ...djusted to the correct flow rate when despatched 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...

Page 10: ...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 c...

Page 11: ...perature 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 bla...

Page 12: ...s 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 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 ...

Page 13: ... 0 08mm Rear End Coverplate Rotor 0 13mm 0 15mm 0 13mm 0 15mm 0 13mm 0 15mm Rotor Cylinder 0 08mm 0 10mm 0 08mm 0 10mm 0 08mm 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 8 are retained on the clean shaft using LOCTITE 648 adhesive or eq...

Page 14: ... by hand before refitting oil pipes 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 be kept in stock at the installation site Part Number Description LGA12 LGA18 LGA26 Quantity Blade S 8331 1 S 8331 2 S 8331 3 6 Ball Bear...

Page 15: ...F 1200 1 14 BEARING SEAL R E F 1047 V F 1047 V F 1047 V 1 15 THRUST WASHER B 1057 B 1057 B 1057 1 16 MECHANICAL SEAL F 1115 F 1115 F 1115 1 17 LOCK NUT B 1073 B 1073 B 1073 1 18 TAB WASHER B 1074 B 1074 B 1074 1 19 CIRCLIP B 1033 B 1033 B 1033 2 20 SOCKET HEAD CAP SCREW G 1060 K 1062 K 1062 12 21 HEX HEAD SCREW G 1030 G 1030 G 1030 4 22 SOCKET HEAD CAP SCREW G 1048 G 1048 G 1048 3 23 DOWEL PIN E 1...

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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