Utile DSP25-5 Guide

The Utile Engineering Co. Ltd. 15/08/06
Irthlingborough, Northamptonshire. England
Tel: [phone]
Fax: [phone] IC183
Installation
Operation
Maintenance Instructions
Model DSP25-5
Vacuum Pump
Serial Number
Site Location
Installation Date

The Utile Engineering Co. Ltd. 15/08/06
Irthlingborough, Northamptonshire. England
Tel: [phone]
Fax: [phone] IC183
Page
General …………………………………………………………………………………….. 3
Operating Principle …………………………………………………………………………… 3
Health and Safety …………………………………………………………………………… 4
Technical Specification …………………………………………………………………………… 5
Packaging …………………………………………………………………………………….. 5
Storage …………………………………………………………………………………….. 5
Handling …………………………………………………………………………………….. 5
Installation …………………………………………………………………………………….. 5
Pre Start-up Checks …………………………………………………………………………… 7
Start-up …………………………………………………………………………………….. 7
Operating Notes …………………………………………………………………………… 7
Stopping Procedure …………………………………………………………………………… 7
Bearings …………………………………………………………………………………….. 8
Maintenance …………………………………………………………………………………….. 8
Troubleshooting …………………………………………………………………………… 9
Blade Inspection …………………………………………………………………………… 10
Reassembly after Blade Inspection ………………………………………………………… 10
Cylinder Renewal …………………………………………………………………………… 10
Change Bearings and Seals …………………………………………………………………. 10
Reassembly …………………………………………………………………………………….. 11
Spare Parts …………………………………………………………………………………….. 11
Spare Parts List …………………………………………………………………………… 12
Warning
Read the installation and maintenance information before commencing work on this equipment. 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 SP series rotary vacuum pump 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 quality standards ensure this series of machines have a long, efficient and reliable service life.
These operating instructions have been written for all personnel who have responsibility to the machine, it contains
all the necessary information required for the machine to have a long trouble free service life. This manual must be
stored near the machine and read before attempting any work on it.
Ensure that all operation and maintenance is only performed by competent and trained personnel and any repairs
use only original parts from the manufacturer.
Contents
Contents
Foreword

The Utile Engineering Co. Ltd. 15/08/06
Irthlingborough, Northamptonshire. England
Tel: [phone]
Fax: [phone] IC183
General
The normal routine of running the machine is very simple. If it is carried out strictly at all times, many years of
trouble free service can be expected.
We emphasise one point of paramount importance-
Filtration of incoming air of gas
If possible provide a logbook so that the operator can enter daily readings. After several months a record will show
whether the machine is performing as it did originally. If readings are to be taken the following are all that is
required. Inlet and outlet air temperatures, suction conditions and oil drip rate.
A typical layout for the logbook is shown in the table below.
Machine Log Book
Date Inlet Air Temp. Discharge Air Temp. Suction Conditions
Operating Principle
Rotary sliding 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 the rotor; centrifugal force and the force of the air or gas presses the blades against the cylinder-housing
wall when the rotor turns.
The vanes divide the crescent-shaped working chamber into cells of different sizes. As the rotor turns, the cell
volume on the intake side increases, and the cell draws air in at low pressure, at which point is open to the intake
delivery line. As the rotor continues to turn, the cell is closed (see fig 1) and the volume of the cell decreases. This
causes the enclosed air or gas to be compressed (see fig 2) and forced out through discharge delivery line under
atmospheric pressure.
The machine can only be run in one direction, which is indicated by an arrow on the cylinder. The direction of
rotation must not be reversed.
Fig. 1
Discharge Intake
Fig. 2
Discharge Intake
General
Operating Principle

The Utile Engineering Co. Ltd. 15/08/06
Irthlingborough, Northamptonshire. England
Tel: [phone]
Fax: [phone] IC183
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.
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 except when maintenance is being undertaken.
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, overspeed trips, emergency stop-buttons and other such devices 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. Do not reach inside machine.
Most machines, certain pipes and ancillaries become very 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.
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
gas pipework or a hazardous situation can arise during 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.
Health and Safety

The Utile Engineering Co. Ltd. 15/08/06
Irthlingborough, Northamptonshire. England
Tel: [phone]
Fax: [phone] IC183
Technical Specification
The model and machine serial number appears on the machine data plate, other machine data can be found in the
following table.
Units DSP25-5
Maximum Vacuum kPa 91.5
Speed – Maximum R.P.M. 2400
Speed - Minimum R.P.M. 1200
Capacity at 50kPa at Maximum Speed L/min 2225
Capacity at 50kPa at Minimum Speed L/min 950
Absorbed Power at 50kPa at Max. Speed kW 1.3
Absorbed Power at 50kPa at Min. Speed kW 0.6
Maximum Inlet Temperature °C 40
Temperature Classification T3
Moment of Inertia kg m20.001
Noise Level at 1 metre dB (A) 80
Weight kg 13
Packaging
The packaging conforms to the relevant regulations. The symbols used on the packages are as follows: -
The machines are bolted down, palletised and shrink wrapped for general protection, and therefore should not
move during transportation. The ancillary components are packed suitably within the case. The packaging and
contents should be received in good condition. The contents should be inspected against the advice note, notify
Utile Engineering within 24 hours of any items, which are damaged or are missing.
Storage
If the machine is not required for immediate installation, the machine should be stored in a clean, dry area
protected from the weather. The intake and discharge port covers must remain in position until the machine is
installed. We recommend that until the machine is installed the shaft be turned a few revolutions by hand every
month to ensure the machine is running free.
The green protective coating on the shaft remains effective for approximately 1 year. If the machine is stored for a
longer period of time, the coat must be renewed.
Handling
Skilled personnel working in accordance with safe working practices must carry out the lifting of machines. Before
lifting machines ensure the correct equipment is available. All equipment must be capable of carrying the weight of
the machine to be lifted. Do not use the machine ports or the shaft extension for lifting or moving the machine.
For weights see above in Technical Specification.
Installation
Utile Engineering trained personnel or those trained to an equivalent standard must only carry out installation, any
claims for damage due to faulty installation will be void. All warning instructions and labels must be observed and
retained with the machine.
It is essential equipment is installed, earthed and guarded in accordance with current legislation.
If the user is installing their own switches and safety devices these must be suitable for the correct working area.
The machine is delivered ready to be connected, with only the removal of the intake and discharge protection
covers. Before installation ensure there is no damage to the machine and that it turns freely by hand.
Location
The machine should be installed in a clean, dry, well-ventilated area. Allow adequate space and facilities for
service, inspection and future expansion.
Technical Specification
Packaging & Storage
Handling
Top / This Way Up Fragile

The Utile Engineering Co. Ltd. 15/08/06
Irthlingborough, Northamptonshire. England
Tel: [phone]
Fax: [phone] IC183
Foundation
Simple slab type foundations, designed for static loadings only are satisfactory. The foundations should raise the
machine to a reasonable height above the floor for convenient service and inspection. The use of anti-vibration
mounts between the base and foundation are recommended, these absorb the vibrations generated by the rotating
parts of the machine and insulate it against any vibration in the surrounding environment. Ensure that the anti-
vibration mounts are evenly loaded. Foundation bolts should fix the base.
Electrical Supply and Connection
Check the voltage rating of the supply is compatible with the fittings. Electrical installation must be carried out by a
qualified electrician and in accordance with current regulations and within the framework of the Electricity of Work
Regulation 1990. Check security of all electrical connections, plugs, sockets before switching the power supply on.
Drive Alignment
The rotor shaft must always be horizontal. There are three basis modes of misalignment; these are angular, parallel
and axial (shown in fig. 4).
Pulleys and couplings should be bored to our standard limits and fitted on the shaft with a screwing motion. On no
account should they be driven on. Tapping of fitments onto the machine shaft with a hammer or mallet, causes
bearing damage. This results in increased bearing noise and a significant reduction in bearing life.
Flexible Coupling
1. Remove any dirt, oil, etc. from all mating surfaces. Place bush in hub and
match half holes on both shafts.
2. Place setscrews loosely in threaded holes. Mount assembly in desired
position on shafts.
3. Tighten setscrews. Place disc/flexible coupling in position, and bring the
shafts together obtaining the manufacturers assembled length for the
coupling given in their instructions.
4. To check for angular alignment: (see fig. 5)
Rotate the coupling through 90°and measure the distance between the
faces. Repeat adjusting the 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 ensuring both shafts are
parallel and in correct alignment, use a straight edge, a correctly aligned
drive will contact both pulleys squarely (see fig. 6).
3. Fit driving belts. Measure span of belts between tangent points of the two
pulleys. A deflection of 1.5mm is obtained for
every 100mm of the measured span. Compare
the deflection force required with the table. If
the force required is according to the table
then the tension is suitable. Too little force
indicates under-tension and visa-versa.
4. The belts should be tensioned towards the
high side, to allow for the tension drop after the belts have been run-in. Belt
tension should be checked daily in the first week after installation/renewal.
Belts, which become charged electrostatically, must not be used in hazardous atmospheres.
Installation
Belt
Section
Force Required to
deflect belt 1.5mm per
100mm span (kgf)
SPZ 0.5 to 0.8
SPA 1.0 to 1.5
SPB 2.0 to 3.1
SPC 4.1 to 6.1
Parallel Alignment Check
Angular Alignment Check
Fig. 5
Angular Misalignment Parallel Misalignment Axial Misalignment
Fig. 4
Correct pulley alignment
Span Distance
Fig. 6

The Utile Engineering Co. Ltd. 15/08/06
Irthlingborough, Northamptonshire. England
Tel: [phone]
Fax: [phone] IC183
Pipework
The connecting pipework must be completely clean, dry and free from internal rust or scale. When fitting the intake
and discharge pipework it is essential that adequate supports be provided and that it is properly aligned to prevent
excessive strain being placed upon the machine, flexible pipe should be placed in the pipeline to remove this strain.
During installation care must be taken to ensure that no foreign matter enters the machine or serious damage may
result. An intake filter should be fitted into the intake side to prevent any particles from entering the machine.
Use P.T.F.E. tape only as a jointing medium since surplus from jointing compounds will damage the blades if drawn
into the machine.
It is essential to fit a non-return valve in the pipework, preferably on the intake side to prevent the machine from
running in reverse on shutdown.
Arrange both the intake and discharge pipework so that any condensate flows away from the machine.
Vacuum pumps are normally supplied with exhaust silencers.
Earthing
It is important that the all items are suitably earthed by metallic earth continuity conductor, or by separate earth
bonding, but in all cases the installation must be made and tested and approved for this feature by a qualified
installer before the power supply is applied.
Pre Start-up Checks
Before starting the machine for the first time after installation, maintenance or after a long downtime, make the
following checks: -
9Ensure all the anchor bolts for the machine, base and motor are securely fastened.
9Flick start the motor to check that the direction of rotation agrees with the arrow on top of the machine cylinder.
Note this should be completed with the coupling/drive belts removed.
9Recheck coupling/drive alignment and retension.
9Check that the machine is free running by turning the shaft by hand through a few revolutions.
9Check all piping connections.
9Check all protective devices ensuring they are working correctly.
9Flick start the motor to check that the direction of rotation agrees with the arrow on top of the cylinder.
9Instruct the operating personnel that the machine is operational.
Start-up
Proceed as follows: -
i. When starting vacuum pumps the intake valve can be closed to reduce the starting power and then slowly
opened as the machine reaches operating speed.
ii. Start the drive motor and bring the machine up to operating speed.
iii. Check all protective devices and controls making sure they are working correctly.
Operating Notes
After the initial running in period, check the belt tension. Belt squeal denotes a loose belt that requires
tightening.
Inspect the filter fitted to the inlet, regularly clean and renew the element when necessary.
Excessive discharge temperature for normal operation as indicated by the rise in temperature shown in the
log book indicates inadequate cooling, or a dirty intake filter. The machine should be stopped and
inspected.
Check the machine internally for wear every 10,000 running hours. (see Inspection and Service)
The blade depth should be checked after the initial 2,000 running hours and thereafter every 5,000 running
hours for wear and renew if the rubbing tips have worn to a depth of 24mm. (See Check Blade Wear).
Condensate if allowed to enter the machine can cause severe blade wear.
Stopping Procedure
Proceed as follows: -
i. When stopping vacuum pumps the intake valve should be slowly closed.
ii. Trip out or Stop the drive motor.
Pre Start-up Checks
Start-up, Operating Notes
Stopping Procedure

The Utile Engineering Co. Ltd. 15/08/06
Irthlingborough, Northamptonshire. England
Tel: [phone]
Fax: [phone] IC183
Bearings
Ball bearings are despatched from the works fully charged with grease.
Shielded bearings have sufficient grease for an operating life of at least two years in normal ambient conditions,
providing there is little or no grease leakage.
Bearings will eventually need replacing.
Maintenance
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.
Install all protective devices and controls properly after completion of work. Dispose of any cleaning solutions as
prescribed by law. Fully trained and competent staff must carry out any maintenance work. Utile
Engineering offer contract maintenance services if required contact our service department.
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.
After any maintenance the machine and equipment must be treated as new and all pre-commissioning checks
should be made. Ensure all guards are secure and in place.
Bearings
Maintenance
MAINTENANCE PLAN
DAILY CHECKS QUARTERLY CHECKS
TASK CHECK TASK CHECK
Clean inlet filters (Daily for 1st week). 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)
Check motors for excessive vibration and
damage.
Check function of vacuum gauges.
WEEKLY CHECKS Check function of non-return valves
Check belt condition / tension Check function of vacuum relief valves
Clean inlet filters (After for 1st week).
Run Standby machine for a few minutes.
Clean vacuum line filters
YEARLY CHECKS
MONTHLY CHECKS
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

The Utile Engineering Co. Ltd. 15/08/06
Irthlingborough, Northamptonshire. England
Tel: [phone]
Fax: [phone] IC183
Troubleshooting
The following table shows some typical problems and the remedies.
Note: If assistance is required in determining and correcting the fault with the machine then contact our service
department.
SYMPTONS CAUSES REMEDIES
Machine revolves in wrong direction Incorrect connection of motor terminal Re-arrange terminal connection
1. Machine operating at higher duty than
specified.
1. Check rating.
2. Blocked intake filter. 2. Clean intake filter.
Discharge air temperature excessive
3. Warped / Sticking blades 3. Replace blades
1. Dirty inlet air/gas. 1. Clean & inspect intake.Excessive blade wear
2. Excessive operating temperature 2. See remedies for excessive discharge
temperature.
1. Worn bearing. 1. Replace bearing.
2. Excessive blade wear. 2. Replace blades & check lubrication
3. Erratic cylinder wear. 3. Rebore, redowel & check lubrication.
4. Rotor contacting coverplates 4. Check temperature, pressure &
internal clearances
5. Drive misalignment 5. Realign and retension drive.
6. Warped rotor blades. 6. Replace rotor blades.
Abnormal noise, vibration or periodic
knocking
7. Excessive liquid carryover. 7. Drain all points.
1. Worn blades. 1. Replace rotor blades.
2. Improper belt tension. 2. Adjust belt tension.
Vacuum cannot be built up or only up to
a certain extent.
3. Sticking relief valve. 3. Clean and replace.
1. Improper belt tension. 1. Adjust belt tension.Slipping of belts
2. Worn belt. 2. Replace with new ones.
Overheating of electric motor 1.Overloading of motor due to excessive
working pressure.
1. Lower working pressure.
1. Breakdown of electric current 1. Contact power company.
2. Malfunction of motor. 2. Check motor.
Machine does not start
3. Wrong motor connections. 3. Check electrical connections.
1. Faulty bearing 1. Replace bearing.
2. Foreign particles in machine. 2. Disassemble machine and remove
foreign particles.
Shaft partially or totally locked
3. Machine seized. 3. Repair machine.
Troubleshooting

The Utile Engineering Co. Ltd. 15/08/06
Irthlingborough, Northamptonshire. England
Tel: [phone]
Fax: [phone] IC183
1. Blade Inspection
When carrying out any maintenance and inspections always follow the health and safety guidelines on page 4.
Ensure all electric circuits are isolated and cannot be switched on, and that the pipeline system has been cleared
and is pressurised to atmospheric pressure. Fully trained and competent service personnel must carry out any
maintenance work.
Inspection commences with the dismantling of the rear end, use parts list drawing on page 12.
1.1 Remove 4-socket head screws (12) the coverplate (3) can be withdrawn leaving the ball bearing (7) on the
shaft.
1.2 Take care not to loose the o-ring (10) fitted between the cylinder (1) and coverplate (3).
1.3 The blades (6) can now be removed form their slots for inspection.
Check the blades for lamination, chipping or charring on their rubbing edges and for concave wear. For any
other wear other than polished surfaces or if the blades depth has reduced to 24mm or below then replace
the blades.
When replacing blades a complete set must be replaced. When fitting new blades, make sure they slide
freely in their slots and if necessary, remove high spots with fine emery cloth.
1.4 Inspect the visible part of the cylinder bore and rotor for 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.
2. Reassembly after Blade Inspection
Reassemble in the reverse order taking note of the following points: -
2.1 Ensure the blades (6) are orientated correctly in their slots.
2.2 Fit o-ring (10) into groove in cylinder (1) end face.
2.3 Replace coverplate and screws.
3. Cylinder Renewal
With the rear end coverplate (3) already removed as described in 1 for blade inspection, the next stage is to
withdraw the rotor complete with the drive end coverplate (2).
3.1 Undo 4 screws (12) and slide off the coverplate (2) complete with the rotor.
3.2 Take care not to loose the o-ring (10) fitted between the cylinder (1) and coverplate (2).
The cylinder can now be replaced.
4. Removal of Bearings and Seals
With the rear end coverplate (3) already removed as described in 1 for blade inspection.
4.1 Using a two-leg pulley drawer the rear end ball bearing (7) can be removed from the shaft.
4.2 The PTFE ring (14) can be inspected for wear, renew if worn.
With the drive end coverplate (2) already removed complete with rotor as described in 3 for cylinder renewal.
4.3 Using a two-leg pulley drawer the remove the drive end coverplate (2) complete with the shaft seal (8)
leaving the ball bearing on the shaft. Note the position of the thrust washer (9) in the coverplate.
4.4 Using a two-leg pulley drawer the drive end ball bearing (7) can be removed from the shaft.
4.5 The PTFE ring (14) can be inspected for wear, renew if worn
4.6 The shaft seal (8) can be pressed out of the coverplate for inspection.
4.7 Inspect the bearings; renew if they show any signs of wear or pitting.
4.8 Examine the shaft seal (8) and renew if the wiping lip is worn or damaged.
Blade Inspection, Reassembly after
Blade Inspection, Cylinder Renewal,
Change Bearings and Seals

The Utile Engineering Co. Ltd. 15/08/06
Irthlingborough, Northamptonshire. England
Tel: [phone]
Fax: [phone] IC183
5. Reassembly Procedure
This section only applies when using original bore size or replacement cylinder. Before commencing reassembly
ensure that all components are perfectly clean.
The correct clearances for these machines are: -
DSP25-5
Drive End Coverplate / Rotor 0.15mm / 0.20mm
Rear End Coverplate / Rotor 0.05mm / 0.08mm
Rotor / Cylinder 0.08mm / 0.10mm
Starting at the rear end
5.1 If spacing rings (5) have been replaced, grind replacements to the exact width of the originals and locate
against the rotor side face, refit the PTFE ring (14).
5.2 Press ball bearing (7) onto the shaft.
5.3 Fit any shims (13) into the coverplate (3) and press coverplate onto the rotor/shaft. Set clearance.
5.4 Replace the o-ring (10) in cylinder groove.
5.5 Turn cylinder (1) upside down for ease of assembly.
5.6 Place rear coverplate assembly onto cylinder (1) via location dowels and bolt with 4 screws (12) and with
o-ring (10) in place.
5.7 Check rotor / cylinder clearance.
Reassemble drive end
5.8 Refit sliding blades (6) in their slots removing any high spots with fine emery cloth. Ensure the blades are
orientated correctly in their slots.
5.9 Fit spacing ring (5) onto the shaft, refit the PTFE ring (14).
5.10 Press ball bearing (7) onto the shaft.
5.11 Replace shaft seal (8) in coverplate ensuring that the tension spring faces away from the bearing.
5.12 Fit thrust washer (9) in the correct position in coverplate (2).
5.13 Assemble onto cylinder (1) via location dowels ensuring o-ring is in position in cylinder end face groove.
Check that the shaft rotates freely by hand.
6. 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 DSP25-5 Quantity
Blade S 2701 5
Ball Bearing H 1057 2
Oil Seal F 1046/V 1
PTFE Ring SK 2536 2
O-Ring F 1232 2
Always quote the machine serial number when ordering spare parts.
Reassembly Procedure
Spare Parts

The Utile Engineering Co. Ltd. 15/08/06
Irthlingborough, Northamptonshire. England
Tel: [phone]
Fax: [phone] IC183
ITEM DESCRIPTION PART No. QTY
1 CYLINDER S 10142/2 1
2 COVERPLATE - DRIVE END S 10132/1A 1
3 COVERPLATE - REAR END S 10132/2A 1
4 ROTOR & SHAFT ASSEMBLY S 10241 1
5 SPACING RING S 10301 2
6 BLADE S 2701 5
7 BALL BEARING H 1057 2
8 SEAL F 1046/V 1
9 THRUST WASHER B 1057 1
10 O-RING F 1232 2
11 DOWEL E 1000 4
12 SOCKET HEAD CAP SCREW G 1014 8
13 SHIM K 1005 TO SUIT
14 PTFE RING SK 2536 2
15 BALLAST ADAPTOR S 10299 1
16 SINTERED FILTER L 1238 2
17 KEY N 1036 1
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 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.
Spare Parts List