Jefferson TANDEM JEFC270T10B-230 User manual

TANDEM 2x 3HP •BELT-DRIVEN
User Manual
v.2.1
JEFC270T10B-230

USER MANUAL
JEFC270T10B-230
270L BELT DRIVEN AIR COMPRESSOR •TANDEM 2x 3HP • 10Bar
www.jeffersontools.com
2

USER MANUAL
JEFC270T10B-230
270L BELT DRIVEN AIR COMPRESSOR •TANDEM 2x 3HP • 10Bar
www.jeffersontools.com 3
CONTENTS
Introduction 4
Specications 4
Unpacking & Assembly 5
Equipment Identication 6
Before First Use 7
Safety Guidelines 8
Warning Labels 10
Safety Valve 10
Operation Guide 11
Electrical Connections: Control Box & Wiring Diagram 12
Maintenance 13
Troubleshooting 14
Environmental Protection 15
WEEE Waste Electrical and Electronic Equipment Statement 15
Parts Diagram - Main Assembly 16
Parts List - Main Assembly 17
Parts Diagram - Pump 18
Parts List - Pump 19
EC Declaration of Conformity 20
Limited Warranty Statement 21
Important: This manual has been compiled by Jefferson Tools and is an integrated part of the product with which it's enclosed and should be
kept with it for the future reference.
This manual describes the purpose for which the product has been designed and contains all the necessary information to ensure its correct and
safe use. We recommend that this manual is read before any operation or, before performing any kind of adjustment to the product and prior to
any maintenance tasks. By following all the general safety instructions contained in this manual you will help to ensure operator safety and extend
the potential lifespan of the equipment.
All photographs and drawings in this manual are supplied by Jefferson Tools to help illustrate the operation of the product. Whilst every effort
has been made to ensure accuracy of information contained in this manual, our policy of continuous improvement determines the right to make
modifications without prior warning.
Note: The information contained in this Instruction Manual is designed to assist you in the safe operation and maintenance of the compressor.
Some illustrations in this Instruction Manual may show details or attachments that differ from those on your own compressor. Contact your
nearest Jefferson Dealer if you are unsure about any information included in this manual or require any additional information about the safe use,
operation maintenance, or repair of this equipment.

USER MANUAL
JEFC270T10B-230
270L BELT DRIVEN AIR COMPRESSOR •TANDEM 2x 3HP • 10Bar
www.jeffersontools.com
4
• 270L Belt-driven compressor suitable for professional workshops
• Fitted with a 2 heavy duty single-phase 3HP motors
• Heavy-duty cylinders with alloy heads for improved heat dissipation
• Anti-vibration padded feet
• Drive guards offer protection to the y-wheel and belt assembly
• Powder-coated tank
• Welded tank fully-compliant with the latest European manufacturing & safety standards
SPECIFICATIONS
JEFC270T10B-230
Tank Capacity: 270L
Input Voltage ~ Frequency: 230V ~ 50Hz
Motor: 2 x 3HP (2x 2.2kW)
Maximum Pressure: 10bar (145psi)
Cylinders: 2
Pump Speed: 1086rpm
Air Displacement: 29.6cfm / 836L/min
Free Air Delivery: 17.6cfm / 298L/min
Guaranteed Sound Power: 97 dB LWA
Lubrication Oil: Jefferson HT68 Compressor Oil
Weight: NW: 190kg / 418Ibs
Dimensions: 1555 x 510 x 1020mm
INTRODUCTION

USER MANUAL
JEFC270T10B-230
270L BELT DRIVEN AIR COMPRESSOR •TANDEM 2x 3HP • 10Bar
www.jeffersontools.com 5
Upon receipt of the compressor, ensure all components are present and have remained undamaged in transit..Retain the packing materials and
packaging in case future transportation of the compressor is necessary. We recommend that the packaging is kept, at least within the period of
the guarantee (Fig.1).
ANTI-VIBRATION FEET
Assemble the anti-vibration feet with the bolts and washers supplied as shown in (Fig.2).
AIR FILTER
If not already tted, remove the transit bung from the top of the head and screw the air lter assembly into position.
OIL BREATHER
• For transportation purposes the oil breather is supplied in a separate bag.
• Read the caution plate and take off the plastic bung from the crankcase, add oil and then assembly the oil breather.
• The plastic bung should be retained for future use should it be necessary to transport the unit.
WARNING:
Never operate the compressor with only the plastic transportation bung tted. Under normal use internal pressure can expel the bung along with
oil from the head, possibly leading to damage.
PLEASE NOTE THE FOLLOWING PHOTOGRAPHS & INSTRUCTIONS ARE FOR REFERENCE ONLY AND MAY DIFFER FOR YOUR
COMPRESSOR MODEL. PLEASE CONTACT JEFFERSON TOOLS IF YOU NEED ANY ADVICE ON THE ASSEMBLY PROCEDURE.
Position the compressor on a at surface or with a maximum permissible
inclination of 10° (Fig.3), in a well aired place, protected against atmospheric
agents and not in a place subject to explosion hazard.
If the surface is inclined and smooth, check if the compressor moves while in
operation – if it does, secure the wheels with two wedges.
To ensure good ventilation and efcient cooling, the compressor’s belt guard must
be at least 100cm from any wall (Fig. 4).
Ensure that the compressor is transported correctly, do not overturn it or lift it with
hooks or ropes (Fig. 5)
After removing the packing materials, check to ensure the product is in perfect
condition and that there are no damaged parts from transit. If in doubt, do not use
the product and notify your Jefferson Dealer.
The packaging materials (cardboard, plastic bags, polystyrene, etc), must be
disposed of in an appropriate manner and recycled where possible. These
materials must not be left within the reach of children as they are potential
sources of danger.
UNPACKING & ASSEMBLY
Fig.3 Fig.4
Fig.1
Fig.5
Fig.2

USER MANUAL
JEFC270T10B-230
270L BELT DRIVEN AIR COMPRESSOR •TANDEM 2x 3HP • 10Bar
www.jeffersontools.com
6
1. Air Tank
2. Ball Valve / Air Outlet
3. Pressure Gauge
4. Pressure Switch
5. Pump Assembly
6. Air Filter
7. Motor Assembly
8. Belt Guard
9. Tank Rating Plate
10. Socket Head Plug
11. Non-return Check Valve
12. Drain Valve
13. Rubber Foot
EQUIPMENT IDENTIFICATION
12
3
4
5
6
7
8
9
10
11
12
13

USER MANUAL
JEFC270T10B-230
270L BELT DRIVEN AIR COMPRESSOR •TANDEM 2x 3HP • 10Bar
www.jeffersontools.com 7
Check oil Level:
Before using the compressor check the oil level
using the dipstick. If the oil is not up to the mark it
should be topped up with Jefferson HT68
Compressor Oil (see Fig.6).
Sight glass / Oil Level:
The compressor oil level can be viewed through the
sight glass; the compressor must be on a level
surface to measure the oil level through the sight
glass accurately (see Fig.7):
• The top of the red dot indicates the full mark
• The bottom of the red dot indicates the low mark
Important: Always ensure that the oil level is correct before operating the compressor.
Ensure working environment is suitable for use:
This compressor must be used on a at, level surface The maximum safe operating angle
in any direction is 15° degrees (see Fig.8).
• Do not operate the compressor on inclines in excess of 15° degrees.
• Serious damage to pump components may result from insufcient lubrication.
• Never use the air compressor on a rooftop or elevated position that could allow the
unit to fall or be tipped over.
• Use additional air hose for elevated jobs.
Check power supply is correct for this compressor:
It is essential that the air compressor has an adequate power supply.
We recommend that you avoid using extension cables with this equipment. Always utilize more air
hose before choosing to use an extension lead, as low voltage could cause damage to the motor.
Please note: Low voltage damage is not covered under warranty.
Always seek advice from a quallied electrician to ensure safe and efcient installation of this equipment.
Read and understand all the electrical safety guidelines laid out in this manual, follow all applicable local authority safety guidelines.
BEFORE FIRST USE
Fig.6 Fig.7
Fig.8Fig.8

USER MANUAL
JEFC270T10B-230
270L BELT DRIVEN AIR COMPRESSOR •TANDEM 2x 3HP • 10Bar
www.jeffersontools.com
8
Read and ensure that you understand all of the operating instructions, safety precautions and warnings in this Instruction
Manual before operating or maintaining this compressor. Most accidents that result from compressor operation and
maintenance are caused by the failure to observe basic safety rules or precautions. An accident can often be avoided by
recognizing a potentially hazardous situation before it occurs, and by observing appropriate safety procedures. Hazards
that must be avoided to prevent bodily injury or machine damage are identied by warnings on the compressor and in this
Instruction Manual. Never use this compressor or modify it in any way that has not been specically recommended by the
manufacturer. Contact a qualied electrician for advice on any issues relating to electrical safety in your working environment.
ELECTRICAL SAFETY
Ensure that you check the equipment thoroughly to ensure it is safe and t for purpose before each use. It is important that
you inspect all plugs, sockets, power cables and electrical ttings for wear and damage and repair or replace any defective
components. The risk of electric shock can be minimised by the correct use of the appropriate electrical safety devices.
• We recommend that you t a Residual Current Circuit Breaker (RCCB) in the main distribution board and that a Residual Current Device
(RCD) is used when operating this equipment.
• The Electricity at Work Act 1989 includes legislation that places legal implications on employers to ensure the safety of electrical devices
in the workplace. The regulations dictate that all portable equipment must be inspected regularly and tested to ensure that it is safe for use.
'Portable equipment' means any electrical item that can be moved and this is often referred to as Portable Appliance Testing (PAT). PAT
testing should be carried out regularly on this equipment by trained, authorised personnel, as required by the legislation.
• The Health and Safety at Work Act 1974 states that it is the responsibility of the owner of electrical appliances to ensure that both the
equipment and working environments are maintained to ensure safe operation at all times.
• Check that all equipment cables are secure, correctly insulated, free from damage, and protected against short circuit and overload before
connecting to the power supply. Do not use worn or damaged cables, plugs, sockets or other ttings.
• Ensure that the power supply matches voltage requirements specied on the equipment and that the plug is wired correctly and tted with
the correct fuse.
• This compressor requires a 32A (230V~50Hz) supply. We recommened that the equipment should be tted with a 32A industrial round
pin plug and connected to a Type C Circuit breaker before connecting to the 32A supply. The compressor should be installed by a qualied
electrician to ensure that the connections and supply are safe and correct.
• If the electrical fuse blows, ensure it is replaced by an identical type of fuse with the same rating.
• Never pull or manoeuvre this equipment into position using the power cable (move using the handle).
• Ensure the power cable is kept away from heat, oil and sharp edges.
• We recommend that the equipment is connected directly to the power supply without the use of extension leads as the resulting voltage drop
can reduce motor and pump performance.
• Always disconnect the compressor from the power source and remove the compressed air from the air tank before servicing, inspecting,
maintaining, cleaning, replacing or checking any parts.
• Do not carry the compressor while it is connected to its power source or when the air tank is lled with compressed air. Be sure the pressure
switch is in the “OFF” position before connecting the compressor to its power source.
• Do not use the compressor in damp / wet conditions.
SAFETY GUIDELINES

USER MANUAL
JEFC270T10B-230
270L BELT DRIVEN AIR COMPRESSOR •TANDEM 2x 3HP • 10Bar
www.jeffersontools.com 9
EQUIPMENT SAFETY
• Never place your hands, ngers or other body parts near the compressor’s moving parts during operation. Ensure that the equipment is
isolated from the power supply and all switches in the OFF position before carrying out maintenance, repairs or adjustments.
• Never operate this compressor without all guards or safety features in place and in proper working order. If maintenance or servicing requires
the removal of a guard or safety features, be sure to replace the guards or safety features before resuming operation of the compressor.
• Always wear safety goggles or equivalent eye protection. Compressed air must never be aimed at anyone or any part of the body.
• When not in use, the compressor should be stored in dry place. Keep out of reach of children. Keep children and animals away from the work
area.
• Clear all work areas of unnecessary tools, debris, furniture etc. prior to use. Cluttered work areas can lead to injuries.
• Do not wear loose clothing or jewellery when operating this equipment. They can be caught in moving parts. Wear protective hair covering to
contain long hair.
• Follow instructions for lubricating this equipment as required.
• Watch what you are doing and remove any potential distractions before use. Use common sense at all times.
• Do not operate this equipment when you are tired or if you are under the inuence of alcohol, drugs or medication that makes you drowsy.
• Check for the correct alignment of moving parts, binding of moving parts, condition of parts, mounting, and air leaks, and any other issues
that might affect the safe operation of this equipment. A guard or other part that is damaged should be properly repaired or replaced by
an authorized Jefferson service centre unless otherwise indicated elsewhere in this instruction manual. Have defective pressure switches
replaced by an authorized service centre. Do not use compressor if the switch does not turn it on and off.
• Operate the compressor according to the instructions provided in this manual. Never allow the compressor to be operated by children,
individuals unfamiliar with its operation or unauthorized personnel.
• Keep all screws, bolts, and plates tightly mounted. Check regularly.
• The motor air vent must be kept clean so that air can freely ow at all times. Check for dust build-up frequently and clean as required.
• If the equipment appears to be operating unusually, making strange noises, or otherwise appears defective, stop using it immediately and
arrange for repairs by a authorized service centre.
• Solvents such as petrol, thinner, benzine, carbon tetrachloride, and alcohol may damage and crack plastic parts. Do not wipe them with such
solvents. Wipe plastic parts with a soft cloth lightly dampened with soapy water and dry thoroughly.
• Only use Jefferson approved replacement parts. Non-approved parts will void your warranty and can lead to malfunction and resulting
injuries. Genuine parts are available from Jefferson your dealer.
• Do not modify the compressor for any use other than which it was designed for by the manufacturer. Do not tamper with or attempt to adjust
the tank, pressure switch or safety valve. Never strap anything to the tank. Do not subject the tank to impact, vibration, heat, abrasion or
corrosive materials.
• Always contact an authorized service centre for advice on any repairs. Unauthorized modication may not only impair the compressor
performance but may also result in accident or injury to repair personnel who do not have the required knowledge and technical expertise to
perform the repair operations correctly.
• When the compressor is not in use, ensure the pressure switch is turned off, disconnect the equipment from the power source and open the
drain cock to discharge the compressed air from the air tank.
• To reduce the risk of burns, do not touch tubes, heads, cylinder and motors. During or immediately after use. Allow equipment to cool down
before carrying out maintenance, repairs or adjustments.
• Never direct the output jet of air at persons or animals. Ensure air supply valve is turned OFF before disconnecting the air supply hose.
• Read the all safety instructions for any tool or accessory used with the compressor and ensure the safe working pressure of any appliance
used exceeds the output pressure of the compressor. If you are using a spray gun it is important to ensure that the work area has sufcient
ventilation in place.
• Do not operate in the vicinity of ammable liquids, gases or solids.
• Do not operate the compressor without an air lter or restrict the air ow around the equipment.
• When the compressor is not in use ensure that it is switched off, disconnected from the power supply and the air and moisture drained from
the tank.

USER MANUAL
JEFC270T10B-230
270L BELT DRIVEN AIR COMPRESSOR •TANDEM 2x 3HP • 10Bar
www.jeffersontools.com
10
SAFETY VALVE
IMPORTANT: The safety valves supplied with this equipment are designed and constructed for use exclusively with compressed air, free from
impurity. The materials used in construction are suitable for operating the valve at the rated pressure and temperatures. The viton or NBR gasket
conserves the resistance characteristics, even in prolonged use. The valve caulking is designed to impede calibration, modication or tampering.
Any modication or recalibaration of the safety valve will nullify warranty and potentially make the equipment unsafe. Ensure that the valve
pressure is no greater than the operating pressure of the tank or of the system that it is installed with.
• Check that the discharge ow rate of the valve is greater than the quantity of the air to discharge.
• The safety valve must be positioned directly on the tank in a vertical position, in a dry, accessible place protected against the weather and far
away from liquids or condensation.
• It must be positioned to allow sufcient space all around for correct air discharge, without causing damage to persons or the surrounding
area.
• The valve rod must be free in its movement when discharging.
• The connection between the valve and the part to be protected must be free from all kinds of choking and be as short as possible so as not
to reduce the discharge ow rate of the valve itself.
• The connection passage area must be greater than the valve orice area.
• During installation screw on the valve with a torque spanner using the hexagonal part of the body.
• Apply a maximum torque of 30Nm, paying attention not to cause any deformation; using pincers, pliers, hammers or tools other than a
hexagonal spanner is forbidden and will void warranty.
• Check that the inlet hole and the shutter are not blocked by glue, Teon or similar materials that could bind the shutter or other functional
components.
• If the valve is replaced the compressed air contained in the system must be discharged rst.
• WARNING: Jefferson Tools cannot take any responsibility for damage caused to persons and/or things due to failure to observe these
instructions.
OPERATION GUIDE
TO START THE COMPRESSOR:
• Prior to connecting the compressor to the power supply, ensure the pressure switch
(A) is on the OFF position as shown in (Fig. 9).
• On initial start-up ensure that the drain valve (C) is open as shown in (Fig.10).
• Turn the power switch (D) from the OFF to ON position on the control box as shown
in (Fig.11).
• The compressor can be used in tandem or single pump mode. You can select the
motor conguration for tandem and single use by toggling the SA2 and SA1 switches
as required (see Fig.12). On initial startup we recommened that both pumps are
turned on to allow the pressure to build up as required.
• Pull the pressure switch C (Fig.11) up to start the compressor.
NOTE: The switch may be a "Lever" or "Button", depending on your compressor
model.
• Allow the compressor to run for a few minutes with air and any moisture escaping
from the tank before closing the drain valve and allowing the pressure to build up.
You will notice the the tone from the motor changing slightly when the drain valve is
closed as the pressure begins to build up in the tank.
• Ensure the tank pressure reaches 10 bar as indicated on the pressure gauge (B)
(Fig.9) before the pressure switch shuts off the motor. The compressor motor will
automatically restart when the tank pressure drops to approximately 3-4 bar less than
the maximum pressure.
• Allow the compressor to run for approximately 10 minutes before connecting any air
tools.
NOTE: During correct operation a whistle of compressed air escaping/releasing will be
heard when the motor strops and a protracted whistle (approximately. 20-30 seconds)
whenever the compressor is started with no pressure in the tank.
A
B
On
Off
Fig.9
C
Fig.10

USER MANUAL
JEFC270T10B-230
270L BELT DRIVEN AIR COMPRESSOR •TANDEM 2x 3HP • 10Bar
www.jeffersontools.com 11
TO STOP THE COMPRESSOR:
Push down on the pressure switch (C) button as shown in (Fig.11). Move the SA1 &
SA2 switches to the OFF position. Move the power switch (D) to the OFF position to
disconnect from the supply.
WARNING: Never stop the compressor using the mains connection. Always turn off the
compressor by pressing the pressure switch button down first.
This way the compressed air will be vented from the head and allowing an easy re-start
and unnecessary damage to the motor can be prevented.
OVERLOAD CUT-OUT
The compressor is equipped with an overload cut out shown at E(Fig.13) which operates
as a safety device to protect the motor.
Should a fault occur and begin to overheat the motor the overload cut out will
automatically engage, cutting the power supply to the compressor.
NOTE: A secondary thermal cutout RESET button (F) is located in the control box (see
Fig.13).
In the event of an overload cut-out, please allow 5 minutes for the machine to cool prior
to attempting to reset the overload cut-out.
If, after resetting the overload cut-out, the overload is activated again, switch off the
machine, disconnect the power supply and contact your Jefferson Dealer for advice.
EFFICIENT OPERATION
For efcient operation of the compressor at full working load and at maximum
operating pressure, ensure that the temperature of the working environment does
not exceed +25°C.
We recommend that you use the compressor at 70% maximum duty per hour
at full load as this will help to ensure efcient operation of the equipment in the
long-term.
PNEUMATIC CONNECTIONS
Ensure that all pneumatic connections used for compressed air have maximum
pressure ratings that are compatible for use with the compressor. Any equipment
damage caused by misuse are not covered under warranty.
Fig.11
on on
off off
D
Fig.12
on
off
on
off
E
Fig.13
F

USER MANUAL
JEFC270T10B-230
270L BELT DRIVEN AIR COMPRESSOR •TANDEM 2x 3HP • 10Bar
www.jeffersontools.com
12
ELECTRICAL CONNECTIONS: CONTROL BOX & WIRING DIAGRAM

USER MANUAL
JEFC270T10B-230
270L BELT DRIVEN AIR COMPRESSOR •TANDEM 2x 3HP • 10Bar
www.jeffersontools.com 13
Before attempting any maintenance jobs on the compressor, make sure of the following:
1. The master power switch is tuned off and equipment is isolated from the mains supply.
2. Pressure switch and the control unit switches are all in the OFF position.
3. All pressure has been removed from the air tank.
Procedure Daily / Weekly 100Hrs 200Hrs 400Hrs
Check pump oil level •
Drain condensate water from the tank •
Check for unusual noise and vibration •
Inspect equipment for air leaks •
Check air filters •
Inspect belts •
Replace air filters •
General cleaning •
Check safety relief valve •
Check belts for wear / replace •
Check and tighten all bolts •
Check tubes fittings & electrical connections •
Service pump / engine •
Internal & external tank inspection •
Replace the oil •
Changing / Filling Compressor Pump Oil
• Ensure the compressor is turned off and disconnected from the power source.
• Allow the compressor pump and other parts to cool off (if changing oil after use).
• Ensure compressor is on a at and level surface.
• Remove ll cap / plug and place collection container underneath the oil drain cap.
• Remove the oil drain cap, and let the oil drain out.
• Replace the oil cap and be sure to tighten this nut securely (you can use some PTFE tape on the thread to help create a tighter seal before
tightening).
• Fill the oil reservoir with a compatible compressor oil (e.g Jefferson HT68 Compressor Oil).
Checking / Cleaning the Air Filter
• Ensure the compressor is turned off and disconnected from the power source.
• Allow the compressor pump and other parts to cool off (if changing lter after use).
• Unscrew the lter top from the lter base by turning (generally) counter-clockwise (the direction may vary depending on your lter).
• Separate the lter top cover from the base.
• Remove the lter element from the lter base.
• Blow out dust and debris from the lter element.
• Replace air lter element if required.
• Reconnect lter top to the base and secure lter.
Inspecting / Replacing a Worn Compressor Belt
• If your air compressor is equipped with a protective cage, nd the screws or clips that hold the cover in place and remove them.
• Inspect the belt and check for cracks or signs of wear.
• If replacement is necessary, move onto the next step. Otherwise, replace the cage / belt guard and repeat the inspection as scheduled.
• To remove the worn / damaged belt, grasp it rmly and while pulling it over the large pulley, rotate the pulleys by hand and the belt will
remove from all pulleys.
• Take the new belt, place it over the small pulley and work it onto the large pulley by hand-turning it in a forward motion until it is securely on
the large pulley. Replace the cage / belt guard.
MAINTENANCE

USER MANUAL
JEFC270T10B-230
270L BELT DRIVEN AIR COMPRESSOR •TANDEM 2x 3HP • 10Bar
www.jeffersontools.com
14
TROUBLESHOOTING
FAULT CAUSE REMEDY
Tank pressure drops continually. Air leak, check all connections. Locate and rectify leak. Run the compressor at maximum
pressure then switch off and disconnect. Brush a soapy
water solution over the connections and look for bubbles.
Tighten any connections showing leaks. If problem
persists contact your authorised service agent.
Tank pressure won’t build up. The drain valve is open. Close the tank drain valve.
The compressor won’t switch off.
The safety valve blows off.
Compressor does not stop when maximum
pressure is reached.
Pressure switch fails to stop motor. Faulty pressure
switch.
Contact your authorised service agent.
Tank pressure won’t build up and the pump
is getting hotter than normal, inlet suction
is poor.
The compressor head gasket or valve plate is faulty.
Fault with the air lter.
Contact your authorised service agent.
Check, clean, replace air lter as required.
There is a leak from the base of the
pressure switch when the compressor is
running.
Failure of the pressure relief valve. (Located in the base
of pressure switch).
Contact your authorised service agent.
There is a leak from the base of the
pressure switch when the compressor is
stopped.
The non-return valve (from the tank) is leaking. Disassemble and clean, if necessary replace valve insert.
Contact your authorised service agent.
The compressor is noisy with metallic
clangs / knocks.
Bearing or piston problem.
Low oil level.
Stop the compressor and contact a specialized service
technician.
The compressor sounds like it is trying to
start (motor makes a humming noise).
Air pressure trapped on piston is resisting the starting
effort.
Faulty capictor or fault within the electric motor.
Turn unit off and on again using the pressure switch. This
will vent air from the delivery tube.
Stop the compressor and contact a specialized service
technician.
Overload switch activated. Startup load may have activated overload switch.
Extension lead is too long (if in use)
Head unloader not functioning.
Leave for a few minutes then press the reset button and
restart.
Remove the extension lead and test compressor by
connecting the compressor as close to the main fuse box
as possible.
Stop the compressor and contact a specialized service
technician.
Air leaks from the safety valve at pressures
less than 10 bar.
The safety valve is faulty. Replace the safety valve.
Compressor stops and will not restart. Power failure.
Motor failure.
Check electrical supply and fuse.
Contact your authorised service agent.

USER MANUAL
JEFC270T10B-230
270L BELT DRIVEN AIR COMPRESSOR •TANDEM 2x 3HP • 10Bar
www.jeffersontools.com 15
WEEE Waste Electrical and Electronic Equipment Statement
Information on Disposal for Users of Waste Electrical & Electronic Equipment
This symbol on the product(s) and / or accompanying documents means that used electrical and electronic products should
not be mixed with general household waste. For proper treatment, recovery and recycling, please take this product(s) to
designated collection points where it will be accepted free of charge.
For private households:
Dispose of this product at the end of its working life and in compliance with the EU Directive on Waste Electrical and Electronic
Equipment (WEEE). Contact your local solid waste authority for recycling information for this equipment.
Disposing of this product correctly will help save valuable resources and prevent any potential negative effects on human health and the
environment, which could otherwise arise from inappropriate waste handling.
Please contact your local authority for further details of your nearest designated collection point.
Penalties may be applicable for incorrect disposal of this waste, in accordance with you national legislation.
For business users in the European Union:
If you wish to discard electrical and electronic equipment, please contact your dealer or supplier for further information.
Information on Disposal in other Countries outside the European Union:
This symbol is only valid in the European Union. If you wish to discard this product please contact your local authorities or dealer and ask for the
correct method of disposal.
ENVIRONMENTAL PROTECTION
Recycle any packaging and unwanted materials instead of disposing of them as waste. All tools, accessories and packaging
should be sorted, taken to a recycling centre and disposed of in a manner which is compatible with the environment.
When the product becomes completely unserviceable, reaches the end of its working life and requires disposal, drain off any
uids (if applicable) into approved containers and dispose of the product and the uids according to local regulations.

USER MANUAL
JEFC270T10B-230
270L BELT DRIVEN AIR COMPRESSOR •TANDEM 2x 3HP • 10Bar
www.jeffersontools.com
16
PARTS DIAGRAM - MAIN ASSEMBLY

USER MANUAL
JEFC270T10B-230
270L BELT DRIVEN AIR COMPRESSOR •TANDEM 2x 3HP • 10Bar
www.jeffersontools.com 17
PARTS LIST - MAIN ASSEMBLY
# Quantity Description # Quantity Description
11 Ball Valve 19 8 SP Washer
21 Plug 20 8 Hex.Bolt
31 Air Tank 21 2 Guard bracket
44 Hex.Nut 22 8 Nut.Hex
54 Rubber pad 23 2 Hex.Bolt
64 Plate Washer 24 2 Pump
74 Hex.Bolt 25 8 Hex.Bolt
88 Hex.Bolt 26 16 SP Washer
91 Drian Valve 27 16 PL Washer
10 1 Plug 28 1 Pressure Switch
11 1 Elbow 29 1 Saftey valve
12 2 Check Valve 30 1 Elbow
12.1 2 Bonnet 31 1 Pressure Gauge
12.2 2 O-ring 32 1 Nipple
12.3 2 Spring 33 1 Quick coupler
12.4 2 Valve element 34 8 Nut.Hex
12.5 2 Valve body 35 2 Guard Bracket
13 2 Corrugated metal hose 36 1 Discharge tube
14 2 Motor 37 1 Elbow Fitting
14.1 2 Fan 38 1 Discharge tube
14.2 2 Fan cover 39 8 Nut.Hex
14.3 2Overload protector 40 2 Set Screw
14.4 2 Capacitance,45uf/450VAC
14.5 2 Capacitance,150uf/350VAC
14.6 2 Capacitance box
14.7 2 Cable clamp
15 2 Key
16 2 Motor pulley
17 2 V-Belt
18 1 Belt guard
18.1 2 Belt guard (RR)
18.2 2 Belt guard (FR)

USER MANUAL
JEFC270T10B-230
270L BELT DRIVEN AIR COMPRESSOR •TANDEM 2x 3HP • 10Bar
www.jeffersontools.com
18
PARTS DIAGRAM - PUMP

USER MANUAL
JEFC270T10B-230
270L BELT DRIVEN AIR COMPRESSOR •TANDEM 2x 3HP • 10Bar
www.jeffersontools.com 19
PARTS LIST - PUMP
# Quantity Description # Quantity Description
11 Hex Bolt 25 1 Bearing Cover
213 SP Washer 26 1 Gasket
31 Pl Washer 27 1 Oil Sight Glass
41 Fly Wheel 28 1 Seal Ring
51 Key 29 1 Lower Cover
68 Hex Bolt 30 12 Hex Bolt
71 Oil Seal 31 1 Nipple
81 Front Support 32 2 Hex Bolt
92 Gasket 33 2 SP Washer
10 2 Bearing 34 1 Radiator
11 1 Crankshaft 35 1 Radiator Gasket
12 2 Connecting Rod 36 6 Hex Socket Bolt
13 4 Circlip 37 1 Air Filter Assembly
14 2 Piston Pin 37.1 1 Case (Fr)
15 2 Piston 37.2 1 Element
16 2 Oil Ring 37.3 1 Case (Rr)
17 2 Scraping Ring 38 1 Cylinder Head
18 2 Compression Ring 39 1 Cylinder Head Gasket
19 2 Piston Ring Kit 40 1 Valve Plate
20 1 Breather 41 1 Valve Blade
21 1 O-Ring 42 1 Valve Gasket
22 1Seal Ring 43 1 Valve Gasket
23 6 Hex Socket Bolt 44 1 Cylinder
24 1 Crankcase

USER MANUAL
JEFC270T10B-230
270L BELT DRIVEN AIR COMPRESSOR •TANDEM 2x 3HP • 10Bar
www.jeffersontools.com
20
EC Declaration of Conformity
We, Jefferson Professional Tools & Equipment, as the authorised European
Community representative of the manufacturer, declare that the following equipment
conforms to the requirements of the following Directives:
Directive: Description:
2000/14/EC (as amended) Noise Emission in the Environment by
Equipment for Use Outdoors
2014/30/EU (as amended) Electromagnetic Compatibility
2006/42/EC (as amended) Machinery Directive
2014/29/EU (as amended) Simple Pressure Vessels Directive
2014/35/EU (as amended) Low Voltage Directive
Equipment Category: Air Compressor (Item 8)
Product Name/Model: JEFC270T10B-230
270L BELT DRIVEN AIR COMPRESSOR • TANDEM 2x 3HP • 10Bar
Notified Body: Technicka inspekcia a.s. Trnavska cesta 56
821 01 BRATISLAVA
Country : Slovakia
Phone : [phone]
Fax : [phone]
Notified Body Number: 1354
Measured Sound Power Level: 97dB (LWA)
Guaranteed Sound Power Level: 97dB (LWA)
Signed by: Stephen McIntyre
Position in the company: Operations Director
Date: 22 January 2019
Name and address of manufacturer
or authorised representative:
Jefferson Tools, Herons Way, Chester Business Park, Chester, United
Kingdom, CH4 9QR
Telephone: [phone]
Fax: [phone]
Email: [email protected]