Clarke PTO 13-2, PTO 19-2, PTO 20-2, PTO 26-2, PTO 30-2 User guide

PTO GENERATOR

OPERATION & MAINTENANCE

INSTRUCTIONS

LS0814

INTRODUCTION

Before attempting to use this product, please read this manual thoroughly and
follow the instructions carefully. In doing so you will ensure the safety of yourself
and that of others around you, and you can look forward to your purchase
giving you long and satisfactory service.

GUARANTEE

This product is guaranteed against faulty manufacture for a period of 12
months from the date of purchase. Please keep your receipt which will be
required 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.

GENERAL INSTRUCTION

The manual contains instructions on correct installation / usage and
maintenance of the PTO, informing you also of potential risks incurred during
use.

We recommend that this manual is kept in close proximity to the PTO.

After having removed the packaging, make sure that there is no damage or
missing parts, if you are unsure please do not use and contact the seller or
alternatively the manufacturer directly.

The PTO should only be used for the purpose for which it was designed. Any
other use is considered as incorrect and thus dangerous.

The PTO must be fixed to the tractor using the 3-point hitch and connected to
earth. Never operate the power take off unless the frame is correctly fixed to
the tractor.

Always ensure the gearbox is sized and rated according to the power of the
generator.

The use of a selector switch is obligatory when configuring the generator to
operate in place of the mains supply.

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PARTS IDENTIFICATION

Generator (1) The generators function is to convert mechanical

energy into electrical energy. It is a synchronous
generator with class H rated insulation. The regulation
can be compound or electronic and the speed 1500
rpm or 3000 rpm.

Gearbox (2) The gearbox is composed of a casing and various

gears and a drive-shaft. It must be regularly
maintained and filled with a specific level of oil SAE
80W90, depending of the power (see pages 47/48).

Frame (3) The frame is a welded fabrication which is designed to

support the generator when connected via the 3
(category 1N and 3N)part linkage system to the
tractor.

Control panel (4 The control panel is designed to transmit the power for

the users. Its design meets existing European
standards. The panel contains a circuit breaker of 30
mA that is sized according to the generator power.

Gimbals guard (5) Protects the users from any contact with the rotating

PTO shaft

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GENERAL CHARACTERISTIC

The PTO generator is designed to be driven by a tractor with a power take off
speed of 430 to 540 rpm. It has a strong frame with a category 1 and 3N 3­point linkage. It has a IP44 control panel in compliance with... the current
European standards. The generator has an IP21 or IP23 standard protection
and can be uprated to IP45 protection upon request. The unit is continuously
rated at the given power and is capable of supplying an overload of 300%
during 20 seconds and of 10% during 1 hour every 6 hours.

WARNING: DO NOT USE THE GEARBOX 24/24 AS IT IS NOT SUITABLE FOR
SUCH USE. IT MUST BE STOPPED FOR A BREAK OF 1 HOUR AFTER EVERY 2­HOUR PERIOD OF USE.

There are two types of regulation available:

GENERATORS WITH COMPOUND REGULATION:

The output voltage of this type of alternator is directly related to the speed of
the engine. At low speed, the output voltage will be less than 400V and a high
speed will cause the voltage to rise above 400V. The voltage regulation is +/­5% at constant speed.

We recommend this alternator for the supply of simple resistive loads or for the
running of electrical motors, we do not recommend this system for powering
sensitive electronic equipment unless they are equipped with an inverter.

GENERATORS WITH ELECTRONIC REGULATION:

The output voltage of this type of generator can accept speed variations of
45 to 55Hz, with a tolerance of more or less 10% with regard to the nominal
speed which is 1500 rpm. The voltage is maintained at +/- 1% in these
conditions. This generator is perfectly suited to all types of load requirements,
in particular it is recommended for use when powering sensitive electronic
equipment.

ELECTROMAGNETIC COMPATIBILITY

All generators are fitted with radio interference suppression in accordance
with class G and N of standard VDE0875

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SAFETY ADVICE

1. Loose fitting garments should not be worn when working in close proximity
of the rotating PTO shaft.

2. Be sure to always switch of the engine before attempting to de-couple the
PTO shaft.

3. In case of breakdown be sure to seek advice from a qualified technician
before attempting to repair. In all circumstances we recommend only
genuine spare parts to be fitted.

4. Disregarding these rules will invalidate the warranty. We recommend
running the PTO generator every three months to prolong its lifetime.

5. During prolonged storage of the PTO, it is necessary to clean it and grease
it carefully. Storage should be in a dry and ventilated place. Always check
the level of oil before starting and run for 30 minutes in no-load conditions
before applying loads. Non-compliance with this instruction may result in
damage to the windings of the machine.

6. To avoid any risk of electrocution, it is imperative to connect the PTO to the
earth.

RESIDUAL RISKS

1. The housing can reach temperatures over 100°C when running. You are
therefore advised not to touch it or place any object against it which is not
heat-resistant.

2. Avoid using the PTO under any source of heat and ensure the ventilation
inlet is always clear of debris.

3. During any maintenance of the PTO always consider the appropriate
protective clothing and footwear.

4. The manufacturer shall not be liable in the following circumstances:

a) Abnormal use of the PTO by non-qualified operators.

b) Incorrect installation.

c) Malfunction of the tractor with which it is connected.

d) Modification of the equipment not authorized by the manufacturer.

e) Use of spare parts which are not of genuine source.

f) Exceptional events such as mis-connection causing short circuit etc.

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ENVIRONMENTAL CONSIDERATIONS

RISKS DUE TO NOISE:

Whilst the noise emitted by the PTO is lower than that emitted by the tractor
we recommend the wearing of hearing protection when subjected to
prolonged usage.

RISK OF FIRE:

Due to its technology, the generator, like all current conductors, may cause
electric arcs, even if this is relatively rare. In case of fire, use only a fire
extinguisher with powder.

TRANSPORT:

When transporting the PTO hitched behind the tractor we recommend that
the PTO drive shaft is detached.

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INSTALLATION

Park the tractor on a flat and safe surface. Stabilize the PTO and connect its
frame to the 3-point linkage (1, 2 & 3). Secure it using the pins (4, 5 & 6).

Attach the universal joint of the PTO
shaft on to the power take off of the
tractor and fix to the gearbox PTO
shaft. Before any operation verify the
alignment by checking the universal
joints are horizontally aligned. (the
angle of the shaft should not exceed
35 degrees).

Any operation of the equipment with
the PTO shaft coupled at a greater
angle would result in premature
failure in the gearbox and possibly the universal joint of the shaft.

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START-UP

After ensuring that the PTO is
correctly assembled to the tractor,
start the tractor and engage the
power take off, increase the speed
until the needle on the frequency
(Hz) meter is at 52 Hz, the
corresponding voltage should read
400v.

Check that the circuit breaker is in
the low position.

Connect the red male CE 400V plug
in the corresponding socket.

Push the circuit breaker lever up. The
PTO is now in operation and ready to
supply you power. However if you
wish to connect to the supply of a
building already served by the
network, it is imperative to do so using
a selector switch (see the electrical
diagram).

Please pay attention to the input
speed from the tractor, whilst in
correct operation the speed should
be maintained between 50 and 52 Hz.

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STOPPING PTO AND TRACTOR

To switch off the PTO and the tractor,
it is necessary to proceed in the
following way. Push the circuit
breaker downwards and gradually
decrease the speed of the tractor.
When the PTO shaft has stopped
rotating shaft has stopped rotating
cut the engine.

Never cut the engine power or
decrease the speed when the
generator is not isolated from the
load!

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PRINCIPLE FOR ELECTRICAL CONNECTION OF THE PTO TO A BUILDING SERVED BY THE NETWORK

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ROUTINE MAINTENANCE

Please ensure all nuts and bolts are correctly secured, ensure that all air entries
and exits are clear from obstruction and that there are no oil leaks from the
gearbox.

Ensure that all instrumentation protections are in place and not missing or
damaged.

If any parts are damaged or missing contact the reseller or directly the
manufacturer to have them replaced as soon as possible.

As with all rotating electrical equipment, there are multiple risks (limbs torn or
cut off, electrocution, etc.). These risks can result in death.

ROUTINE MAINTENANCE IP 45 ALTERNATOR

Cleaning of air filters (if available)

Air filters are optional parts that are supplied on request. These devices must
be cleaned on a regular basis. Inside the casing there is a mesh net that must
be kept clean in order to ensure a good performance of the filter. The time
interval between each cleaning operation depends upon the prevailing
conditions of the installation site. Frequent inspections of these parts will
establish if any cleaning is necessary. Please ensure the generator is not
functioning when performing cleaning operations.

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GEARBOX

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MAINTENANCE

LEVEL AND DRAINING

Before start up the level of oil in the gearbox should be checked using the
level indictor.

The level is correct when there is not an air bubble. If it is necessary add SAE
80/90 oil.

After the first 50 hours operation the gearbox oil should be changed, please
refer to page 15/66 for the qty of oil required.

Subsequent oil changes should occur every 500 hours of operation or every 12
months.

Respecting this maintenance regime will ensure optimization of the gearbox's
lifetime.

CLEANING

Cleaning: Cleaning of the generator must be performed with a dry or damp
rag. Compressed air can be used to blow out debris that may have
accumulated inside the generator (please see the diagram for the direction
of flow).

NEVER USE A HIGH PRESSURE WATER DEVICE TO CLEAN YOUR GENERATOR

STORAGE

Storage: When not in use the PTO must be stored in a clean, dry, ventilated
place. Never cover the PTO with a cover as this may allow damp to degrade
the insulation level of the windings.

• Do not store in a dusty environment.

• Do not store in an acid environment.

• Do not store in an explosive environment.

After storage it is recommended to operate the PTO without any load applied
for 30 minutes in order to ventilate and dry the windings. The resistance value
of the windings must be in excess of 5 Meg ohms.

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ELECTRIC DIAGRAM

1 RCBO 0.03A AC

2 circuit Breaker 2x16A

3 Voltmeter

4Ampmeter

5Frequency meter

6 Socket 3 phases CE 3PH+N+T

7 Socket single phase CE 16A

8Hour meter

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ELECTRIC DIAGRAM

1 RCBO 0.03A AC

2 RCBO 0.03A AC

3 Voltmeter

4 Amprmeter

5Frequency meter

6 Socket single phase CE 1PH+N+T

7 Socket single phase CE 1PH+N+T 16A

8Hour meter

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TECHNICAL SCHEDULE

COMPOUND ALTERNATOR

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ELECTRONIC ALTERNATOR

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TROUBLESHOOTING

The Generator Does
Not Energize

Low Voltage At No
Load

High Voltage At No
Load

After Energizing The
Generator De­energizes

Under Load,
Voltage Is Less Than
Rated Value:

Under Load Voltage
Is Higher Than
Rated Voltage

Unstable Voltage Check Uniformity Of Rotation.

Change The Fuse On The AVR

Increase Speed By 15%.

For an instant apply on + and - of the electronic
regulator a 12v battery voltage with a 30 ohm resistor
in series, respecting the polarities.

Reset The Voltage Potentiometer.

Check The Speed.

Check The Windings.

Reset Voltage Potentiometer.

Substitute Regulator.

Check Connection Cables Are In Accordance With
The Attached Drawings.

Reset Voltage Potentiometer.

Current Too High, Power Factor Lower Than 0.8, Speed
4% Under Rated Speed- Substitute Regulator.

Check Diodes, Disconnect Cables.

Reset Voltage Potentiometer.

Substitute Regulator.

Check Stability Control Of Regulator Using The "Stab"
Potentiometer.

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NOTES

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