Clarke SE Series Installation and operation manual

AIR COMPRESSOR
ELECTRIC MOTOR DRIVEN
OPERATING & MAINTENANCE
INSTRUCTIONS 1209
©

Thank you for purchasing this CLARKE Industrial Air Compressor.
Before putting to use, please read this booklet thoroughly to ensure that installation
is correctly carried out and the maintenance schedules correctly followed. This, in
turn, will ensure the compressor will provide you with long and trouble free service.
Please note that electrically driven machines are designed for indoor use only.
CONTENTS
Safety Precautions .......................................................................... 3
Noise Levels .................................................................................... 3
Installation ........................................................................................ 4
Suggested Fuse Ratings ................................................................. 4
Electrical Connections ................................................................... 5
Lubrication ...................................................................................... 5
Before Starting Compressor .......................................................... 5
To Start Compressor ....................................................................... 6
To Stop Compressor ....................................................................... 6
General Arrangement - Stationary ............................................... 7
Outlet Pressure Adjustments .......................................................... 8
Trouble Shooting ............................................................................. 9-13
Spare parts and service ................................................................. 13
Maintenance Chart ....................................................................... 14
Torque Values for Cylinder Head Bolts .......................................... 14
Declaration of Conformity ............................................................. 15
This Clarkeproduct is guaranteed against faulty manufacture for a period of
12 months from the date of purchase. Please keep your receipt as proof of
purchase.
This guarantee is invalid if the product is found to have been abused or
tampered with in any way, or not used for the purpose for which it was
intended.
Faulty goods should be returned to their place of purchase, no product can
be returned to us without prior permission.
This guarantee does not effect your statutory rights.
GUARANTEE
2

SAFETY PRECAUTIONS
Before using your compressor it is in your own interest to read and pay attention to
the following safety rules:
♦COMPRESSED AIR IS DANGEROUS - Never direct a jet of air at people or animals.
♦Do not operate your air compressor with any guards removed.
♦Electrical or mechanical repairs should only be carried out by a qualified
electrician/engineer. If you have a problem, contact your local dealer, or
our Service Department on 020 8988 7400
♦Before attempting any repair ensure pressure is expelled from the air receiver
and disconnect from electrical supply.
♦Do not leave pressure in air receiver overnight or when transporting.
♦Do not adjust or tamper with any safety valves. The maximum working pressure
of the compressor is clearly stated on the machine.
♦Exercise caution when transporting the machine to avoid tipping the machine over.
♦Do not operate in a wet/damp environment.
♦Locate your air compressor on a firm flat surface and ensure an adequate
supply of clean air is available to the pump unit.
♦Do not exert any strain on electrical cables and ensure that air hoses are not
tangled or wrapped around machinery etc.
♦The cylinder head and delivery pipes of your compressor become quite hot
during operation. Do not touch. After switching off remember to leave an
adequate cool-down period before touching.
♦Ensure that any equipment/tool used in conjunction with your compressor
has a safe working pressure exceeding the output pressure of the machine.
♦When disconnecting air hoses or other equipment from your compressor ensure
that the air supply is turned off at the machine outlet and expel all pressurised
air from within the air hose and other equipment attached to it.
♦If using your compressor for paint spraying:
a) Never spray close to any source of flame or heat.
b) Always ensure that the spraying area has adequate fresh air ventilation.
c) Hazardous paints require special apparatus (see paint manufacturers
recommendations).
♦Never let anyone operate the compressor unless they have had the necessary
training.
♦Permanently installed pipework systems should be designed and installed by
a competent engineer.
NOISE LEVELS
These machines produce noise levels in excess of 70dB(A). Persons working in the
vicinity of the machine must be provided with suitable ear protection.
3

INSTALLATION
Before installing your machine, check that its air output is sufficient for the equipment
to be used. The air output from the compressor must be more than the volume of
air required. We recommend the following:
1. Firm and level site, and the use of floor mountings for stationary compressors
- anti-vibration pads. (Do not bolt machines directly to the floor).
2. Dust and damp free environment.
3. Adequate ventilation for:-
a) Air intake to compressor pump (in order to draw in clean air).
b) Cooling to compressor pump, and electric motor.
4. To allow sufficient access for servicing, a minimum clearance of 500mm must
be allowed around the machine.
5. The power cable from the main supply must be large enough to carry the
starting and running load of the electric motor. This is particularly relevant if
the compressor is some distance from the source of supply.
6. Electrical installations should be completed by a qualified electrician.
7. Electrical connection to the mains supply must be via a suitably fused (see
table below) approved plug or isolator (allowing sufficient capacity for motor
starting). If using a circuit breaker, ensure it is motor rated and of sufficient size
to allow for motor starting.
8. Compressors should be connected to mains electricity supply via an earth
leakage protection device (RCD).
SUGGESTED FUSE RATINGS
MOTOR SIZE SINGLE PHASE THREE PHASE MOTORS 415V
KW HP MOTOR D.O.L. D.O.L. STAR DELTA
0.75 1.0 13 amp 10 amp
1.1 1.5 13/15 amp 10 amp
1.5 2.0 20 amp 10 amp
1.9 2.5 20 amp
2.2 3.0 30 amp 16 amp
3.0 4.0 40 amp 20 amp
4.0 5.5 50 amp 25 amp
5.5 7.5 30 amp
7.5 10.0 25 amp
11.0 15.0 30 amp
15.0 20.0 35 amp
4

ELECTRICAL CONNECTIONS
IMPORTANT - SINGLE PHASE MACHINES ONLY
The wires in the mains lead of this machine are coloured in accordance with the
following code:
Green and Yellow – Earth
Blue – Neutral
Brown – Live
As the colours of the wires in the lead of this appliance may not correspond with
the coloured markings identifying the terminals in your plug, proceed as follows.
•The wire which is coloured green and yellow must be connected to the
terminal which is marked with the letter E or by the earth Symbol ( ) or
coloured green or green and yellow.
•The wire which is coloured blue must be connected to the terminal which is
marked with the letter N or coloured black.
•The wire which is coloured brown must be connected to the terminal which is
marked with the letter L or coloured red.
WARNING: This machine must be earthed.
110V Model
Connect the mains lead to a suitable 110V (50Hz) electrical supply through
anapproved plug or a suitably fused isolator switch. If using a portable 110V
transformer,make sure it has a rated capacity sufficient to take the load of the
air compressor.
If in any doubt, consult a qualified electriction.
5

TO START COMPRESSOR
1. Switch on isolator (mains supply)
2. Switch on pressure switch (lift knob or twist switch). (Fig.2, item 22)
3. Check rotation (Flywheel/Fan blows air over pump)
4. Run compressor for 10 minutes with outlet valves open (first time of operation only).
5. Close valves and check that pressure does not exceed maximum working
pressure (stamped on machine plate), if the pressure exceeds the maximum
working pressure stated, stop the machine (see below), vent the system and
contact the Carke Service Department.
TO STOP COMPRESSOR
1. Switch off at the pressure switch (Push knob down or turn switch). (Fig.2, item 22)
2. Isolate from the Mains Supply.
2. Drain air receiver (release drain tap).
WARNING:
Compressor pumps, delivery pipes will remain hot for some time after use.
NOTE: When starting compressors up to and including the 3HP models, an auto
bleed valve will operate and air will be heard vent. This is quite normal and should
not cause concern. The valve should close after several seconds. Should it fail to
close, consult your Clarke dealer.
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LUBRICATION:-
Pump: Use Clarke compressor oil, as indicated on machine plate.
BEFORE STARTING COMPRESSOR, CHECK:-
1. Compressor Pump Oil Level by - (a) Dipstick (to level marked)
or - (b) Sight glass (see fig.1)
2. (a) Automatic Control:- Pressure switch ON/OFF switch is in
the OFF position
Fig.1
WARNING
1.Before starting compressor, open all outlet valves.
2.The following start and stop instructions must be followed in the correct
sequence to avoid serious damage to the compressor/motor.

GENERAL ARRANGEMENT
1. Air Compressor Pump 8. Drain Tap 16. Oil Level Sight Glass
2. Electric Motor 9. Inspection Plug 17. –
(or petrol/diesel engine) 10. Non-Return Valve 18. –
3. Wire Guard 11. Air Bleed Valve 19. Air Delivery Pipe
4. Pressure Switch 12. Oil Drain Plug 20. Air Bleed Pipe
5. Pressure Gauge 13. Saddle 21. Air Receiver
6. Safety Valve 14. Air Intake Filter 22. On/Off switch
7. Ball Valve 15. Oil Filler/Breather 23. Auto Air Bleed
NOTES:
1. On automatic machines 10 H.P. & above a solenoid valve is fitted to the
delivery pipe.
2. On automatic machines 10 H.P. & above, an Auto Star Delta (ASD) starter is
fitted, ready to be mounted to a wall or panel etc. It is IMPORTANT to note
that NO ADJUSTMENTS should be made to this component.
The ASD should be connected to a 3-phase supply by a qualified electrician.
A. STATIONARY
NB: Must be mounted on anti-vibration pads.
Fig.2
7
Illustrative
purposes only

OUTLET PRESSURE ADJUSTMENTS
PORTABLE COMPRESSORS
1. Pressure Adjusting Knob
2. Outlet Taps
3. Quick Fit Nuts
4. Pressure Gauge
To adjust outlet pressure:
To increase pressure - turn knob (1) clockwise. To
decrease pressure - turn knob (1)
anticlockwise.
Outlet taps - slide knurled section (2) away
from body to open, push towards body to
close.
NOTE: Pressure Gauge (4). Pressure shown will differ by approximately 1 bar
depending on whether the outlets are open/closed.
STATIONARY COMPRESSORS
These machines are not supplied with the facility to adjust outlet pressure. A
comprehensive range of airline accessories is available from your local CLARKE
stockist.
OVERLOAD BUTTON
The electric motor is fitted with an automatic
overload detector which will stop the motor if
an overload is detected.
If this happens,
1. Switch off at the pressure switch (Push
knob down or turn switch).
•Allowthecompressortocooldownfor5-
10 minutes.
2. Press the Reset button shown on the right.
3. Switch on pressure switch (lift knob or twist switch).
If the overload trips repeatedly, it may indicate a fault with the compressor, in this
case you should contact the Clarke service department (see page 13).
Fig.6
8
OTHER PRODUCTS WITHIN OUR RANGE In addition to Air Compressors from 3–80 cfm, we
offer a vast range of airtools and airline equipment. Please ask your local dealer for
details of our range or a copy of our Power Products Catalogue
Illustrative
purposes only
(may vary)

TROUBLE SHOOTING CHART
SYMPTOM PROBABLE CAUSES REMEDY
Compressor will not Fault in electrical Let an electrician check
start automatically. installation. electrical installation.
a) current supply failure.
b) voltage drop.
c) motor starter faulty.
d) motor incorrectly
connected or faulty.
e) starter overload has Reset by depressing
tripped out. button.
f) Pressure switch Have pressure switch
defective. changed by an electrician.
g) Fuse blown. Check fuse rating - replace.
Fuses keep blowing. Inadequate size fuse Replace with reference to
installed. chart on page 4.
Fault in motor. Contact Clarke Service
Compressor unit Non-return valve leaking Disconnect from the mains
starts, but stops (compressor unit is on load supply and empty air
again after only a during start). receiver. Clean or replace
few revolutons. Non-return valve blocked, non-return valve.
possibly frozen up. Thaw non-return valve out
(Unit must be installed in
frost-free place).
Solenoid valve leaking or Contact Clarke Service
defective (only applies to Department
10 hp machines and above).
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IMPORTANT!
1. Any remedial work that may be required must be carried out by a qualified
electrician/engineer.
2. Disconnect from the mains supply before removing any parts from the
compressor.
3. Empty Air Receiver of Air before dismantling any part of the compressor unit’s
pressure system.
4. If your compressor develops a fault do not use until the fault has been rectified.

SYMPTOM PROBABLE CAUSES REMEDY
Compressor unit will not Pressure switch defective. Contact Clarke Service
stop automatically. Department
Bleed valve under Non-return valve leaking. Clean non-return valve
pressure switch blows or replace.
whilst compressor is
not running.
Bleed valve under Relief valve leaking. Clean relief valve or
pressure switch change pressure switch.
blows whilst machine
is running.
Compressor runs Suction filter blocked. Change filter.
continuously and can’t V-belt too slack (not Tighten V-Belt.
attain the working applicable to direct
pressure required. drive machines).
Leak between compressor Tighten connection and
block and air receiver/ repair leak or contact
leaks in or near air receiver. Clarke Service Dept
RPM too low because of Contact Clarke Service
incorrectly connected Department
electric motor.
Valves blocked by dirt, Contact Clarke Service
paint, dust or coked up. Department
Inspection cover or plug Empty air receiver and
leaking. change seal or contact
Clarke Service Dept.
Suction rendered difficult or Ensure unobstructed air
impossible at suction intake Flow around the unit.
or the air being taken in is
too warm.
Pressure gauge defective. Install a larger
Unit too small in relation to compressor
air consumption of
connected equipment
Compressor worn. Have compressor over-
hauled or replace it.
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