Draper DA25/201 User manual

25 & 50 LITRE
COMPRESSORS
• INSTRUCTIONS •
IMPORTANT: PLEASE READ THESE INSTRUCTIONS CAREFULLY TO
ENSURE THE SAFE AND EFFECTIVE USE OF THIS TOOL.
STOCK No. PART No.
52624 DA25/201
55274 DA25/230
33825 DA25/250
52625 DA50/201
55275 DA50/230
33826 DA50/250
04/2000

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25 & 50 LITRE COMPRESSORS
■STOCK No.52624, 55274, 33825, 52625, 55275, 33826.
■PART Nos. DA25/201, DA25/230, DA25/250, DA50/201, DA50/230, DA50/250.
Whilst every effort has been made to ensure accuracy of information given in this manual is correct at the
time of going to print, the Draper Tools policy of continuous improvement determines the right to change
specification without notice.
CONTENTS: Page Nos.
Specification / Guarantee................................................................................................................... 3
Safety Warning ................................................................................................................................... 4
General Safety Warning for Air Compressors and Tools .................................................................... 4
Power Supply ..................................................................................................................................... 5
Know Your Air Compressor ................................................................................................................ 6
Operation........................................................................................................................................... 6-7
Operation Cont’d................................................................................................................................ 7
Maintenance....................................................................................................................................... 7
Maintenance Cont’d ........................................................................................................................... 8
Optional Accessories ........................................................................................................................ 9
Trouble Shooting Guide .................................................................................................................... 10
We
Draper Tools Ltd. Hursley Road, Chandlers Ford, Eastleigh, Hampshire. SO53 1YF. England.
Declare under our sole responsibility that the product:
Stock No. 52624, 55274, 33825, 52625, 55275 & 33826.
Part No. DA25/201, DA25/230, DA25/250, DA50/201, DA50/230 & DA50/250.
Description:- Compressors 25 & 50 Litre.
To which this declaration relates is in conformity with the following directive(s)
89/392EEC, 87/404EEC & 89/336EEC.
With reference to:
EN 292-2, IEC 34-1, EN 60335-1 & EN 60204-1.
JOHN DRAPER
Managing Director
DECLARATION OF CONFORMITY

Stock No. 52624 55274 33825 52625 55275 33826
Part No. DA25/201 DA25/230 DA25/250 DA50/201 DA50/230 DA50/250
Air displacement 195L/min (6.9cfm) 230L/min (8.2cfm) 250L/min (8.3cfm) 195L/min (6.9cfm) 230L/min (8.2cfm) 250L/min (8.8cfm)
Free air delivered (FAD) 125L/min (4.2cfm) 160L/min (5.7cfm) 150L/min (5.3cfm) 125L/min (4.2cfm) 160L/min (5.7cfm) 150L/min (5.3cfm)
Motor 1.5HP. 230V. 2HP. 230V. 2HP. 230V. 1.5HP. 230V. 2HP. 230V. 2HP. 230V.
Speed 2800rpm 2850rpm 2800rpm 2800rpm 2850rpm 2800rpm
Maximum pressure 116 PSI (8 bar) 116 PSI (8 bar) 116PSI (8 bar) 116 PSI (8 bar) 116 PSI (8 bar) 116 PSI (8 bar)
Number of cylinders 111111
Receiver capacity 25 litres 25 litres 25 litres 50 litres 50 litres 50 litres
Weight 26kg 25kg 27kg 36kg 39kg 37kg
Draper compressors have been carefully tested and inspected before shipment and are guaranteed to be
free from defective materials and workmanship for a period of 12 months from the date of purchase
except where tools are hired out when the guarantee period is ninety days from the date of purchase.
Should the compressor develop any fault, please return the complete tool to your nearest authorized
warranty repair agent or contact Draper Tools Limited, Chandler's Ford, Eastleigh, Hampshire, SO53 1YF.
England. Telephone: [phone].
If upon inspection it is found that the fault occurring is due to defective materials or workmanship, repairs
will be carried out free of charge. This guarantee does not apply to normal wear and tear, nor does it
cover any damage caused by misuse, careless or unsafe handling, alterations, accident, or repairs
attempted or made by any personnel other than the authorized Draper warranty repair agent.
This guarantee applies in lieu of any other guarantee expressed or implied and variations of its terms are
not authorized.
Your Draper guarantee is not effective unless you can produce upon request a dated receipt or invoice to
verify your proof of purchase within the 12 month period.
Please note that this guarantee is an additional benefit and does not affect your statutory rights.
Draper Tools Limited
SPECIFICATION
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GUARANTEE
The typical sound pressure level of this machine is 77db(A).
The noise level whilst working, could exceed 85db(A) - WEAR EAR PROTECTION.

SAFETY WARNING
WARNING:
Please read the following instructions carefully. Failure to do so could lead to serious personal injury.
IMPORTANT:
Draper Tools recommends that this compressor should not be modified or used for any application other
than that for which it was designed. If you are unsure of it’s relative applications do not hesitate to contact
us in writing and we will advise you.
GENERAL SAFETY RULES FOR
AIR COMPRESSORS AND TOOLS
1. KNOW YOUR COMPRESSOR
Before operating the compressor, read and
fully understand the starting, operating and
stopping sections in this manual. Read all
labels affixed to the compressor. Learn it’s
applications and limitations.
2. SERVICING AND MAINTENANCE
Do not service or maintain this compressor
until you have read and understood the
maintenance section of this manual.
3. CHECK DAMAGED PARTS
Before further use of this compressor a guard
or other part that is damaged should be
carefully checked to ensure that it will operate
correctly and perform its intended function.
Check for alignment of moving parts,
breakage of parts and any other conditions
that may effect its operation. A guard or other
part that is damaged should be properly
repaired or replaced.
4. DISCONNECT FROM POWER SUPPLY
Before servicing, maintaining or replacing
damaged parts ALWAYS disconnect the
compressor from the power supply.
5. EARTH
This compressor is equipped with an
approved 3-core power cable. The green and
yellow conductor in the core is the earth wire.
NEVER connect the yellow and green wire to a
live terminals.
6. AVOID DANGEROUS ENVIRONMENTS
Do not use the compressor is damp or wet
locations or expose it to rain. Keep the work
area well lit. Provide adequate surrounding
work space.
*Not suitable for building sites.
7. KEEP GUARDS IN PLACE
8. AVOID ACCIDENTAL STARTING
Make sure the power supply switch is off
before connecting to the power supply.
9. KEEP CHILDREN AWAY AND MAKE
WORKSHOP CHILDPROOF
All visitors should be kept a safe distance
from the work area. The power tools and
workshop should be made childproof with
padlocks, master switches or by removing
starter keys.
10. NEVER LEAVE THE COMPRESSOR
RUNNING UNATTENDED
Turn the power supply off. Do not leave the
compressor until it comes to a complete stop.
11. DO NOT OVERLOAD THE COMPRESSOR
Before operating any air tool check that
the free air delivery (FAD) from the air
compressor is equal or greater than that of the
air tool to be used. NOTE: the compressor
should not start more than nine times in one
hour.
12. AIR PRESSURE
Always check that the air supply pressure is
equal to or less than the air tool
manufacturers maximum operating pressure.
13. USE SAFETY GOGGLES/MASK
Wear safety goggles (which comply to a
recognized standard) at all times. Normal
spectacles only have impact resistant lenses,
they are NOT safety glasses. Also use a face
mask if a cutting operating is dusty or if
spraying paint or other toxic substances.
14. USE RECOMMENDED ACCESSORIES
For a complete range of recommended
accessories please refer to page 9 of this
manual.
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POWER SUPPLY
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CONNECTING YOUR COMPRESSOR TO A POWER SUPPLY
A separate electrical socket should be used for your machine. The circuit should not be less that a 13 amp
ring main which should be protected by a 30 amp fuse or miniature circuit breaker rated at 30 amps. If an
extension cable is used, use only 3-core extension leads with 3-pin sockets which will accept the
machine’s plug. For distances up to 100 feet use 16 gauge .064 = 2.5mm wire: for distances up to 150 feet
use 14 gauge .080 = 3.0mm wire. A qualified electrician should replace or repair damaged or worn cables
immediately.
Before connecting the motor to the power supply, make sure the switch is in ‘OFF’ position and that the
electric current is of the same characteristics as stamped on the motor rating plate. All cable connections
should make good contact. Running on low voltage will damage the motor. See extension lead chart
below.
WARNING
Single phase 230 volt machines must be connected using the relevant coding and matching the colour of
the flexible cable to that of the plug.
The procedure is as follows:
1. Connect green and yellow coloured core to the plug terminal marked letter ‘E’ earth symbol or
coloured green or green and yellow.
2. Connect brown coloured core to plug terminal marked letter ‘L’ (live).
3. Connect blue colour core to plug terminal marked letter ‘N’ (neutral).
N.B. Three phase machines must be connected by a qualified electrician.
EXTENSION LEAD CHART:
Extension lead sizes shown assure a voltage drop of not more than 5% at rated load of tool.
3 6 10 13
Extension cable length Wire Size mm2
7.5m 0.75 0.75 1.0 1.25
15m 0.75 0.75 1.0 1.5
22.5m 0.75 0.75 1.0 1.5
30m 0.75 0.75 1.25 1.5
45m 0.75 1.25 1.5 2.5
Ampere rating
(on Name plate)

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1. CAUTION:You must remove the plastic transit
bung from the oil sump and replace it with the
dip stick (provided) before any initial use of the
compressor to avoid any long term problems.
Connect the compressor to the power supply.
Always turn the machine on and off by means of
the appropriate switch ✪✌ Fig.1. located on top
of the pressure switch box.
2. Check that the reservoir drain valve is closed
✫✌Fig.2.
3. These compressors are controlled by a pressure
switch assembly ✬✌which automatically cuts
off the power supply to the motor when the
maximum operating pressure is reached and
restarts the compressor when the compressor
drops below the pre-set minimum.
✪✌ PRESSURE GAUGE -
indicates air pressure in receiver.
✫✌ ON/OFF SWITCH
✬✌ MOTOR
✭✌ RESERVOIR INSPECTION PLUG
✮✌ MOTOR COWLING -
covers/protects moving parts.
✯✌ AIR RECEIVER -
stores air.
✰✌ AIR OUTLET VALVE -
releases air from the reservoir.
✱✌ THERMAL OVERLOAD
PROTECTION RESET SWITCH
✲✌
OVERLOAD SAFETY RELEASE VALVE
✳✌ RESERVOIR DRAIN VALVE
KNOW YOUR AIR COMPRESSOR
OPERATION
✪✌
✫✌
✲✌
✮✌
✰✌
✯✌
✱✌
✬✌
✭✌
✳✌
✳✌
✫✌
✬✌
Fig.1.
Fig.2.
Fig.3.

OPERATION Cont’d
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4. To start the compressor turn the switch to the
ON position as shown in Fig.4.
The pressure switch is pre-set at the factory and
the compressor is also fitted with an overload
safety relief valve in the event of the pressure
switch not functioning correctly.
5. To stop the compressor turn the pressure switch
to the OFF position. Do not switch off at the
power supply before switching off at the
machine. See Fig.5.
The amount of air pressure inside the receiver
is indicated by the gauge ✭✌ Fig.5.
MAINTENANCE
IMPORTANT:
Before performing any maintenance operations,
disconnect the compressor from the power supply
and release all the air from the receiver, until the
pressure gauge reads zero.
EVERY DAY:
A. Check the oil level and top up if required with
Shell Corena P68 Monograde oil or equivalent.
B. Drain the condensate from the receiver. The
drain plug ✮✌ Fig. 6. is situated on the
underside of the receiver tank.
EVERY MONTH:
A. Clean the air suction filter using compressed
air. Replace the filter every 500 hours of use.
NOTE:- The position of the filter will vary on
each model, refer to the parts listing & drawing
of the model concerned.
B. Check the tension of the drive belt and adjust if
necessary.
EVERY 1000 HOURS:
A. Replace the oil. Remove the drain plug ✯✌
Fig.7. and drain the oil into a suitable container.
Refit the drain plug and refill the crank case
with new oil to the correct level.
B. Clean all the external surfaces of the pump unit
and motor. Ensure that neither the motor fan
cowling ✰✌or head cooling fins ✱✌ are
blocked or obstructed in any way. See Fig.8.
EVERY 2000 HOURS:
Check the condition of the valves and replace
Fig.4.
Fig.5.
Fig.6.
Fig.7.
Fig.8.
✭✌
✮✌
✯✌
✱✌ ✰✌

MAINTENANCE Cont’d
PRESSURE SWITCH SETTINGS:
The delivery pressure setting can drift over a
period of time and will require periodic
adjustment. Ensure that the pressure switch
settings are correctly adjusted and maintained at
the correct level. This will help prevent faults
occurring which can result in reduced
performance and possible failure.
PRESSURE SWITCH ADJUSTMENTS:
To adjust the pressure level at which the cut-out
functions, remove the switch cover and turn the
pressure regulating screw clockwise to increase
the level and anticlockwise to decrease the level.
See Fig.9.
To adjust the cut-in pressure turn the cut-in
pressure regulating screw clockwise to increase
the level and anticlockwise to decrease the level.
WARNING:
DO NOT ADJUST THE CUT-IN PRESSURE
ABOVE THE MAXIMUM PRESSURE AS PER
THE MACHINE SPECIFICATION.
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-+
-+

OPTIONAL ACCESSORIES
The following accessories are available from your local Draper air tool stockist.
1⁄2" Combination Filter
Regulator/Lubricator
Part No.4222/3.
Stock No.51857.
Mini Oiler
Part No.4255.
Stock No.22311.
1⁄2" Combined
Filter/Regulator
Part No.4222/3.
Stock No.51858.
1⁄4" Recoil Air Hose (25ft)
Part No.4225/1A.
Stock No.52662.
3⁄8" Recoil Air Hose (25ft)
Part No.4225/2A.
Stock No.52663.
HEAVY DUTY
1⁄4" Nylon Recoil Air Hose
(25ft)
Part No.4282.
Stock No.27742.
HEAVY DUTY
3⁄8" Nylon Recoil Air Hose
(25ft)
Part No.4283.
Stock No.27743.
1⁄4" Straight Air Line Hose
(50ft)
Part No.4306.
Stock No.36939.
5⁄16" Straight Air Line
Hose (50ft)
Part No.4307.
Stock No.36940.
3⁄8" Straight Air Line Hose
(50ft)
Part No.4308.
Stock No.36941.
1⁄2" Straight Air Line Hose
(50ft)
Part No.4309.
Stock No.36942. 3 pce Air Line Coupling Set
Part No.ACK1.
Stock No.27740.
See Draper Catalogue for
full range of PCL
couplings and fittings
- 9 -

SYMPTOMS POSSIBLE CAUSES
Thermal overload protection trips. Oil level low.
Wrong direction of rotation.
Pressure switch failure/motor overload.
High oil consumption. Air filter clogged.
Wrong type of oil.
Broken piston rings.
Oil pumping. Air filter clogged.
Wrong type of oil
Oil level too high.
Piston scratched, worn or scored.
Noisy operation (knocking). Loose drive pulley, coupling or excessive wear in
the motorshaft.
Loose fly wheel, drive belt loose.
Low oil level.
Milky oil in crankcase (water in oil). High humidity. Change oil more frequently.
Oil in compressor air supply. Air filter clogged, oil level too high.
Low air output. Kinked hose, leaking connections.
Air filter clogged.
Piston rings broken or incorrectly seated in.
Cylinder or piston scratched, worn or scored.
Drive belt loose.
Excessive belt drive wear. Belt loose - slipping, belt too tight.
Pulley and flywheel misaligned.
High moisture contents in air output. Caused by high humidity. Drain any excess
moisture from receiver. Move to an area less humid.
Excessive starting and stopping. High moisture content in receiver.
Air leaks in piping/connections.
Compressor will not start. Power cable faulty, fuse blown, circuit breaker
open. Motor thermal overload protection tripped or
faulty. Pressure switch faulty. Check if the receiver
pressure is higher than the pressure switch cut-out
pressure (motor will re-start when the receiver
pressure drops below the cut-in pressure).
Air blowing from inlet. Broken inlet valves.
Compressor runs continuously. Defective pressure switch.
Compressor runs but does not produce air. Check all valves are closed. Inspect all gasket in
case one is broken check drive belt is not slipping
or broken.
General air leaks. These result from poor seals on some fittings.
IMPORTANT: PLEASE NOTE ALL REPAIRS/ADJUSTMENTS SHOULD
BE CARRIED OUT BY A QUALIFIED PERSON.
TROUBLE SHOOTING GUIDE
- 10 -
POWER DIVISION HELP LINE:
[phone]

NOTES

DRAPER TOOLS LTD.
Hursley Road, Chandler’s Ford,
Eastleigh, Hants. SO53 1YF. England.
Tel: [phone].
Fax: [phone].
YOUR DRAPER STOCKIST
©Published by Draper Tools Ltd.
No part of this publication may be reproduced,
stored in a retrieval system or transmitted in any
form or by any means, electronic, mechanical
photocopying, recording or otherwise without
prior permission in writing from Draper Tools Ltd.
www.draper.co.uk
e-mail: [email protected]