Comer PGRF Series User manual

SERVICE
MANUAL
Release A10/14
www.comerindustries.com
Certied Quality System
UNI EN ISO 9001 : 2008
PGRF
series
PGRF
312

First issue 10/14 Release A10/14
PGRF 2/9
INDEX
SYMBOLS USED
SAFETY SHOES
Safety shoes must be worn by all autorized people to
work on the reduction gear
SAFETY GLOVE
Safety glove must be worn by all autorized people to
work on the reduction gear
SAFETY GLASSES
Safety glasses must be worn by all autorized people to
work on the reduction gear
OBLIGATION
Operation to be observed
DANGER
Be careful of hanging loads
PROHIBITION
Do not work with machines in movement
PROTECTIVE CLOTHING
Protective clothing must always be worn by personnel
authorized to work with reduction gears.
WARNING
Operation must be carried out with extreme care with
personal injury if proper procedures are not followed
GENERAL INFORMATION....................................................................................................................................................................................... 3
GEARBOX UNIT IDENTIFICATION ............................................................................................................................................................. 3
RISKS AND PRECAUTIONS........................................................................................................................................................................ 3
TRANSFER AND STORAGE ....................................................................................................................................................................... 3
HANDLING ................................................................................................................................................................................................... 3
PRODUCT DISPOSAL ................................................................................................................................................................................. 3
GEARBOX UNIT........................................................................................................................................................................................... 4
INTENDED USE AND LIMITATIONS............................................................................................................................................................ 4
LUBRICANT ................................................................................................................................................................................................. 4
ORDINARY MAINTENANCE.................................................................................................................................................................................... 5
MAINTENANCE............................................................................................................................................................................................ 5
MAINTENANCE INTERVALS ....................................................................................................................................................................... 5
OIL REPLACEMENT PROCEDURE ........................................................................................................................................................................ 6
OIL DRAINING.............................................................................................................................................................................................. 6
OIL TOPPING OFF....................................................................................................................................................................................... 6
OIL FILLING.................................................................................................................................................................................................. 6
INSTALLATION AND START UP.................................................................................................................................................................. 7
PRELIMINARY CHECKS AND INSTALLATION ........................................................................................................................................... 7
START UP .................................................................................................................................................................................................... 7
MALFUNCTIONING AND FAILURE ............................................................................................................................................................. 7
FUNCTIONING INTERRUPTION.............................................................................................................................................................................. 7
TROUBLESHOOTING.............................................................................................................................................................................................. 8
TORQUE WRENCH SETTING ................................................................................................................................................................................. 9
This manual :
• provides all information about ordinary maintenance, installation and use for this unit,
• must be read and understood by the authorized people/operators before any kind of intervention,
• must be kept handy, in a safe place and must always be clear and legible for future reference whenever needed.

First issue 10/14 Release A10/14
PGRF 3/9
GENERAL INFORMATION
All the data which characterize the gear unit are reported on the name plate attacched on
the unit.
GEARBOX UNIT
IDENTIFICATION
HANDLING Handling,liftingandtransportationmustbecarriedoutbyqualied,
authorized and appropriately trained personnel.
Before and during unit handling:
• check the stability of the unit;
• verify that the lifting means and its accessories (ropes, hooks, etc.) are
suitable to lift and handle the unit;
• follow strictly the regulations in force for security and prevention of
industrial injuries.
Manual loads:
If the unit or its parts must be handled manually, limit the load to 10Kg.
We recommend lifting the load by keeping it as close as possible to the body and bending
the knees and not the back.
TRANSFER AND
STORAGE
The unit is best stored in closed and covered environments.
Do not store the unit ouside or directly onto the ground.
If the unit is stored for long periods (over 3 month), these must be externally protected with
anti-oxidizingproductsandlledwithoiltoprotecttheinternalcomponents.
Care should also be used to avoid violent impact.
Safety of authorized workers must be guarantee.
Provide allauthorizedworkerwithallnecessaryandspecicIPG.
Example: Slip-proof shoes should be worn, because there is oil in the reduction gear and
during maintenance some of it may leak in the working area.
Always handle the units with adequate lifting means.
RISKS AND
PRECAUTIONS
ADDITIONAL PRECAUTIONS
• Guarantee an effective prevention system by constantly monitoring cleaning and
integrity of the structures.
• Actuateaspecicperiodical cleaning and maintenance plan of the unit.
• In case of accidental overloads or damage to the unit, stop functioning unit and carry
out a repairing procedure.
Do not work with machines in movement.
PRODUCT
DISPOSAL
The disposal of waste material deriving from machine/components demolition must be
done with respect for the environment, without polluting land, air or water.
Dismantling: parts and components must be disassembled and separated in according to
the materials they are made of: iron, aluminium, copper, plastic, rubber, etc.
Components and parts must be disposed of by the relative centres in full compliance with
the laws in force on the matter of dismantling and demolishing industrial waste.
Packages (pallets, carton boxes, paper, plastic, etc.) to lead into regeneration/recycling
circuits as far as possible, by delivering separate waste classes to authorized compaines.
Waste oil/grease:to dispose of waste oil abide by the laws for protecting the environment
and the laws in force in the Country where the machine is used.
Environmental
protection:
Local rules must be
complied with in regard
to the laws existing in
the country where the
machine is used

First issue 10/14 Release A10/14
PGRF 4/9
INTENDED USE
AND
LIMITATIONS
GEARBOX UNIT Most materials of these gearboxes are made of high quality steel and cast iron that have
to comply with the increasingly strict requirements on workability, resistance to distortion,
to fatigue failures and to wear, safety and durability.
Alltechnicalinformationaredescribedinthedocumentsreferredtothespecicunitcode.
Brake unit:
the unit could be equipped with hydraulics negative brakes with oil-bath disks, expressly
designed for static or parking braking.
Correctbrakingvaluesaredescribedonthespecicexternaldrawing.
WARNING: It is strictly forbidden to use it as a dynamic brake.
Hydraulic motor:
to select the hydraulic motor take into consideration the maximum performance of the
reduction gear.
GENERAL INFORMATION
This gearbox unit must be:
• used only for industrial application;
• used with correct type and quantities of lubricants;
• handled, assembled, installed, used and maintained in compliance with this manual;
• handled, assembled, installed, used and maintained only by authorized workers/operator.
It is forbidden:
• tousethegearboxunitinawaythatdoesnotconformtothetechnicalspecications
and the intended use described in this manual;
• to install and use this gearbox unit in environments with explosion risks;
• to use the gearbox unit with safety devices removed or disabled.
External drawing and documents annexed to the unit, report:
• technical informations;
• dimensions and characteristics;
• maximum number of input/output speed (rpm);
• maximum functioning values (torque, dimensions, etc...).
LUBRICANT
Oil type
Example
Oil name
Example
Gearboxes normally are supplied without lubricant.
Type and quantity of lubricant are indicated onthespecicexternaldrawing.
Alluidsusedmustbecompatiblewithallthecomponents,elastomersandseals.
ISO VG 150 - 10°C + 30°C
ISO VG 220 + 10°C + 45°C
ISO VG 320 + 30°C + 60°C
Laviscositàaumentaaldiminuiredellatemperaturaeviceversa
Oil
Type
Ambient temperature t°C (min / max)
Mineral Synthetic
PAO PG
Viscosity
- 20°C + 60°C - 20°C + 60°C
PAO PG
SHELL OmalaS2G OmalaS4GX OmalaS4WE
EXXONMOBIL MobilgearXMP MobilSHCGear Glygoyle
KLÜBER KluberoilGEM1 KlubersynthEG4 KlubersynthGH6
AGIP Blasia BlasiaSX BlasiaS
BP EnergolGR‐XP EnersynEPXEnersynSGXP
CASTROL AlphaSP AphasynEP AlphasynPG
CHEVRON UltraGear TegraSyntheticGear HiPerSYN
TOTAL CarterEP CarterSH CarterSY
Lubrificanteperusoalimentare:contattareilserviziotecnicocommerciale
Lubrificantebiologico:contattareilserviziotecnicocommerciale
Lubricants
Producer Mineral Synthetic

First issue 10/14 Release A10/14
PGRF 5/9
To guarantee long life and excellent performance to the gear unit, maintenance opera-
tions must be done on a regular basis.
Before maintenance operations, authorized people must disconnect the unit power supply,
putting it “out of order”, taking all the necessary precautions to ensure it cannot be restar-
ted accidentally or any of its moving parts.
During maintenance operations:
• it is forbidden to work with machines in movement,
• wear suitable protection (IPG),
• avoid accidental restart of the unit ,
• oil leaks should not be a source of danger,
• do not handle units that are still very hot.
ORDINARY MAINTENANCE includes:
• check of oil level and oil leaks,
• oil topping off,
• oil replacement,
• grease topping off,
• periodical inspection.
EXTRAORDINARY MAINTENANCE include:
• disassembly and reassembly;
• replacement of wearing or damaged parts;
• bearing replacement;
• oil seals replacement.
MALFUNCTION AND ANOMALIES
When malfunctions/anomalies are found:
• schedule an immediate/anticipated general overhaul;
• replace damaged or faulty components with new components if necessary.
MAINTENANCE
When
maintenance operations
arenished, restore all
safety conditions of
functioning
Note: Instruction for
extraordinary maintenance
are NOT described
in this manual
Note: described
maintenance intervals
could be different with
different machine duty
cycle
MAINTENANCE
INTERVALS
Inspection and Operations Intervals
Oil leakage before functioning
Brake functioning before functioning
Oil and surface temperature on functioning
Noise and vibrations on functioning
FIRST OIL CHANGE only after initial 100 service hours
Oil level check every 500 service hours or monthly
Unit and plugs cleaning, oxidation, damage every 500 service hours
ORDINARY MAINTENANCE
every 2000 service hours or at least once a year
Oil replacement ordinary maintenance
Presence of water in the oil after oil draining
Brake test ordinary maintenance
Screws/plugs tightening torque ordinary maintenance
EXTRAORDINARY MAINTENANCE every 5000 service hours
Oil seals replacement extraordinary maintenance
Bearings replacement extraordinary maintenance
Brake disks and springs replacement extraordinary maintenance
ORDINARY MAINTENANCE
Maintenanceoperationsmustbecarriedoutbyqualied,trainedandauthorisedpersonnel

First issue 10/14 Release A10/14
PGRF 6/9
OIL
LEVEL
PLUG
OIL
LEVEL
PLUG
PROCEDURE:
• Position the unit with drain plug ( ) placed down.
• Drain the oil: unscrew the drain plug ( ) and, to ensure that all the oil has been
removed, also unscrew the level plugs.
After oil draining:
• replace all plugs and relatives washers or o-ring,
• retallplugsandrelativeswasheronplaceintheirseats.
In order to avoid sludge deposits, change the oil while the gear unit is still warm.
EXAMPLE OF
PLUGS
LAY OUT
EXAMPLE OF
PLUGS
LAY OUT
OIL
DRAINING
OIL
TOPPING OFF
OIL
FILLING
OIL REPLACEMENT PROCEDURE
DRAIN
PLUG
Warning:
if the quantity of oil
used during topping
off is greater than 10 %
of the oil capacity then
check again for leaks
Note:
correct plugs
congurations are
illustrated on the speci-
c external drawings
Note:
correct plugs
congurations are
illustrated on the speci-
c external drawings
Warning:
Do not mix synthetic
lubricants with mineral
lubricants
FILLING
PLUG
Maintenanceoperationsmustbecarriedoutbyqualied,trainedandauthorisedpersonnel
Turn 90° counter-clockwise
PROCEDURE:
• Removelling()andlevelplug().
• Topping up the unit adding oil lubricant from the upperhole(llingplughole)until
correct OIL LEVELreached:theoilowoutfromtheOILLEVELhole.
OIL
LEVEL
PLUG
OIL
LEVEL
PLUG
DRAIN
PLUG
DRAIN
PLUG
FILLING
PLUG
FILLING
PLUG
GROUND
GROUND
GROUND
GROUND
PROCEDURE:
• Removelling()andlevelplug().
• Fill the unit adding oil lubricant from the upperhole(llingplughole)untilcorrectOIL
LEVEL reached:theoilowoutfromtheOILLEVELplughole.
• Whentheoilllingprocedureisnished,replaceandtighteningallplugs.
• Correctoilquantityisindicatedonthespecicexternaldrawing.
Note:
for an effective oil
change, the unit should
be ushed through
with a liquid detergent
recommended by the
lubricant supplier
Warning - BURNS
The oil could be very hot
and could cause burns

First issue 10/14 Release A10/14
PGRF 7/9
PRELIMINARY
CHECKS AND
INSTALLATION
START UP
INSTALLATION and START UP
Before start up:
• remove unnecessary keys and tools;
• restore all unit safety system;
• all preliminary checks have been done;
• verify plugs and screws tightening;
• there are no oil leaks;
• make sure no radial or axial forces are applied;
• verify correct unit alignment with the structure;
• verify motor power connection;
• therearenoobstaclesthatcaninuencethecorrectoperationoftheunits;
Start-up and running in:
increase gradually torque and rotation values until max values allowed are achieved.
After starting up :
• friction between moving parts must be absent;
• excessive noise and vibration must be absent;
• carry out functional tests to verify:
• correct functioning of the unit;
• correct functioning of the safety system of the unit;
• that values functioning are respected.
Brake test:
carry out engage/disengage test to verify correct unlock pressure value and the brake tor-
que value (correctvaluesaredescribedonthespecicexternaldrawings).
In case of malfunctioning:
1. interrupt and disable the functioning of the machine,
2. check and verify correct installation,
3. schedule an immediate/anticipated general overhaul of the gearbox unit.
Before installation check and verify:
• motor type and connection;
• that unit components are not damaged and that the centering parts are not rusty;
• unit installation diagram;
• oil level/lubricant and type of lubricant;
• correctpluginstallationandefciency;
• that the reduction gear screws and plugs have been tightened with correct values ;
• that there are no hazardous atmosphere in the work area.
To guarantee the correct unit installation:
• remove dirt and grease from the unit;
• lubricate spigots and coupling surfaces;
• centeringandxingtheunitwithoutforcing;
• dents or sparks must not be created/produced;
• friction between moving parts must be absent;
• installandxtheunitandallcomponentscorrectly;
• take care not to deform the contact surfaces.
Installationandstart-upmustbecarriedoutbyqualied,trainedandauthorisedpersonnel
In case of malfunctioning or failure:
1. disconnect the unit malfunctioning,
2. carry out a maintenance or repair plan,
3. replace the damaged or faulty components with new components.
MALFUNCTIONING
AND FAILURE
Disconnect unit malfuntioning and avoid accidental run of the unit.
Interrupt and disable the functioning of the machine/vehicle during maintenance ope-
rations, general overhaul or revision procedures (e.g. lifting the wheels off the ground,
turning off the work procedure...etc...) to avoid hurting operators and other people.
FUNCTIONING
INTERRUPTION

First issue 10/14 Release A10/14
PGRF 8/9
TROUBLESHOOTING
Problems Possible cause Remedies
Oil leaks 1) Damaged or worn seals;
2) Breather plug clogged;
1) Contact Comer Industries;
2) Clean or substitute the plug
Excessive
overheating
1) There is no oil in the unit;
2) Incorrect level of lubricant;
3) Brake malfunctioning;
4) Excessive layer of dust;
5) Inadeqaute ventilation;
6) Internal problem.
1) Filling the unit with oil;
2) Restore correct level of lubricant
(oil/grease);
3) Verify brake functioning;
4) Clean the unit;
5-6) Contact Comer Industries;
Excessive noise 1 Internal problem
•Restore correct oil level.
•Restore correct grase q.ty.
•Contact Comer Industries.
Excessive noise 2 External problem •Verify screws/connection.
•Verify unit installation.
Excessive vibration 1) Incorrect installation;
2) Internal problem;
1) Verify installation and screws
tightening;
2) Contact Comer Industries;
The unit fail to run 1) Incorrect motor installation;
2) Internal problem
1) Verify motor installation and
connection;
2) Contact Comer Industries;
Wrong rotation unit
direction Uncorrect motor connection Verify unit installation and connec- tion;
The unit does not rotate
1) Incorrect motor installation;
2) Internal problem
1) Verify motor installation and
connection;
2) Contact Comer Industries;
Brake malfunctioning 1) Brake components damaged or
worn;
1) Replace brake components;
The unit cannot
assembled on the
structure machine
1) Incorrect dimensioning •Verify unit scheme.
•Contact Comer Industries.
In case of different problems from
this table, contact the
Technical-Commercial Service
Comer Industries
Maintenance data sheet Maintenance data sheet
Serial number ................................................... Serial number ...................................................
Work carried out: Work carried out:
Operating hours ............................................... Operating hours ...............................................
Comer Industries code .................................... Comer Industries code ....................................
Date of maintenance work ............................... Date of maintenance work ...............................

First issue 10/14 Release A10/14
PGRF 9/9
TORQUE WRENCH SETTING (N x m)
Screw on steel or cast iron