SPE DFG460-4 Operating Manual

DFG460-4

Diamond Floor Grinder

Operating Manual

This manual is provided to persons purchasing an

SPE machine and may not be reproduced in part or full

without written permission of

SPE International Ltd.

This manual provides the basic information required

and is only to be used as a guideline.

The SPE machines are manufactured and covered by

SPE design registrations granted and pending.

SPE International Ltd reserves the right to alter the

equipment design and specification as required

without notice.

The SPE product range is subject to amendment and

improvement as a result of on going research

Honeyholes Lane, Dunholme, Lincoln LN2 3SU, England

Tel: [phone] Fax: [phone]

Email: [e-mail]

DFG460-4

Operating Manual

DFG460 Triple Head

Floor Grinder

OPERATING MANUAL

This manual covers to the best of our knowledge the operation and maintenance of the

DFG460-4 diamond floor grinder. Before operation of the equipment the manual should be

read and understood by the operator. The safety regulations must be followed at all times.
Service of electrical components should be carried out by authorised personnel.

WARNING
Failure to follow these instructions may result in serious personal injury or death. SPE disclaims

all responsibility for damage to persons or objects arising as a consequence of incorrect
handling of the machine and failure to inspect the machine for damage or other faults that may
influence the operation prior to starting work.

DFG460-4

Operating Manual

INDEX

Page No

1 Starting Work
2 DFG460 Tooling
3 Maintenance
4 Safety

5 Spare Parts Breakdowns
6-7 Main Gearbox Assembly
8-9 Main Drive Assembly
10-11 Pivot Frame Assembly
12-13 Axle Frame Assembly
14-15 Adjustable Strut Assembly
16-17 Handle Assembly
18-19 Drive Gear Assembly
20-21 Intermediate Gear Assembly
22-23 Driven Gear Assembly
24 Electrical Components
25 Specification Sheet
26 Warranty
27 Declaration of Conformity
28 Conditions of Sale

DFG460-4

Operating Manual

STARTING WORK

1. BEFORE STARTING WORK ENSURE THAT THE GRINDING HEADS HAVE BEEN
FITTED, SEE PAGE 2

2. Ensure the power supply is correct for DFG460-4 - This should be a 220v 16 amp supply
from the mains or generated with a minimum of 8 kva on 50 cycles.

3. Connect a vacuum to the port at the rear of the machine to control the dust.

4. The height of the operating handle can be adjusted by using the handwheel at the rear of
the machine. Turning the handwheel anti-clockwise will raise the handle and clockwise will
lower the handle.

The grinding head of the machine can pivot and the movement can be altered by adjusting
the two grinding head stops at the front and rear of the frame.

5. After connecting the machine to the power supply turn the red isolator switch to the ON
position. The red light will illuminate on the electric panel.

6. Turn on the vacuum.

7. Ensure that the emergency stop button is out by turning clockwise.

8. Turn the speed control knob on top of the electrical panel to a low speed setting.

9. Press the green button on top of the electrical panel. The green light will illuminate and the
inverter will power up. There may be a delay of 2-3 seconds before the electric motor starts.

10. To increase the grinding speed, turn the speed control knob on top of the electrical
panel to the next level. With experience the operator will be able to feel the correct speed
setting for the grinding process.

11. To stop the machine, press the red emergency stop button.
The machine can be disassembled to enable it to fit into a small vehicle. Unplug the motor

lead from the electrical panel then take out the pins in the yokes at the base of the main
handle and also the one at the bottom of the height adjustment tube, lift the handle assembly
from the frame of the machine.

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DFG460-4

Operating Manual

DFG460 TOOLING

The DFG460 is fitted with three drive plates that use a quick release tooling system. These
are fitted to the machine with three countersunk screws per plate. Ensure that these plates
are securely fastened to the machine prior to fitting any tools.

METAL GRINDING TOOLS

1. Disconnect the machine from the power supply.

2. Tip the DFG460 backwards onto the operator handle. The machine must be secured and
supported.

3. Fit the metal tools into the drive plates by locating the dovetail on the back of the tool into
the chamfered slot in the drive plate and slide outwards. Give the tool a tap outwards to lock
into position.

4. Repeat the above process to fit the other eight tools into the drive plates.

5. Removal of existing tools is the reverse of the above. Tap the tool inwards to unlock and
slide out of the slot in the drive plate.

6. After fitting the tools, gently lower the machine back onto the floor surface.

RESIN POLISHING TOOLS

The resin tools are fitted as a two piece system. Fitting will require a set of resin tool holders
(part no 5495 (x9)) with the Velcro backing that will accept most standard 60mm diameter
Velcro backed resin tools.

1. Disconnect the machine from the power supply.

2. Tip the DFG460 backwards onto the operator handle, the machine must be secured and
supported.

3. Fit the resin tool holders into the drive plates by locating the dovetail on the back of the
tool holder into the chamfered slot in the drive plate and slide outwards, give the tool a tap
outwards to lock into position.

4. Repeat the above process to fit the other eight tool holders into the drive plates.

5. Once all the tool holders are in place, press on the required resin tools onto the velcro
backing.

6. Changing resin tools only involves removing from the tool holder and replacing.
To remove the tool holders, tap inwards to unlock and slide out of the slot in the drive plate.

7. After fitting of the tools, gently lower the machine back onto the floor surface.
NOTE: Always use the same type and bond of tool on each of the three heads, equally worn

tools must be fitted as a set.
To ensure the correct tool is being used, check wear rates after quarter of an hour and again

at half hourly intervals, this will give an indication of total wear rates and cost per square
metres.

2

DFG460-4

Operating Manual

MAINTENANCE

AFTER USE:

Clean the machine to remove all build up of dust and surface residue. If using a hose pipe or

pressure washer, take care that water is not directed onto electrical components and switches.
(Note: Motors and switches are not waterproof)

Ensure the height adjustment thread is cleaned and then lightly oiled. Periodically it should be

removed and the female threaded section cleaned out and oiled regularly to maintain a light,
smooth height adjustment.

The flexible couplings that support the drive plates should be checked on a weekly basis, the

couplings should be firm without excessive movement.

The planetary gear case is sealed and should not require any maintenance, the internal gears

are lubricated with Lithium EPO grease.
All components should be checked daily for tightness.
All plugs, sockets and electrical leads should be checked for condition and damage.
Periodically check the oil level in the drive gearbox. Ensure that the machine is level and

remove the top blanking plug from the gearbox at the front of the machine. If oil comes out of

the hole when the plug is removed then the gearbox contains sufficient oil, if not then top up the

gear box using a SY320 grade gear oil.

3

DFG460-4

Operating Manual

SAFETY

Only trained operatives should be allowed to work the DFG460 range of floor grinders.
Note: It is possible that the noise level produced by the Diamond Floor Grinder could exceed

90dbA. Appropriate PPE must be worn and the equipment must be used in line with
guidelines laid down by the Health & Safety Executive.

Always ensure that all power leads and hoses are disconnected before attempting to service
the machine. Never tip the machine backwards until the grinding plates have stopped
rotating and the machine has been isolated at the main supply.

Noise and vibration will occur at various levels dependent on the grinding attachments and work
being completed. It is recommended that tests are taken on site to provide the operator with
accurate information on using the equipment within the guidelines laid down by the Health &
Safety Executive.

NOTE:

1. NEVER OPERATE THE DFG460 FLOOR GRINDER OUTDOORS IN WET CONDITIONS AS
THE ELECTRICAL COMPONENTS ARE NOT WATERPROOF

2. NEVER OPERATE THE DFG460 WITH THE HEADS RAISED FROM THE FLOOR

3. THE SERVICE OF ELECTRICAL COMPONENTS SHOULD BE CARRIED OUT BY
AUTHORISED PERSONNEL ONLY.

4

DFG460-4

Operating Manual

5

DFG460-4

Operating Manual

MAIN GEARBOX ASSEMBLY

ITEM

QTY

PART NUMBER

DESCRIPTION

1 1 5504

Upper Gear Plate

2 - See drawing no. DFG-460-0066-1

Page 18-19

3 - See drawing no. DFG-460-0067-1

Page 20-21

4 - See drawing no. DFG-460-0068-1

Page 22-23

5 1 5525

Main Hub

6 1 5505

Upper Gear Ring

7 1 5506

Lower Gear Ring

8 1 5507

Lower Gear Plate

9 1 7424

Lip Seal

10

6

BOLT246

M8 x 16 Cap HD Skt Screw

11

6

WASHER004

M8 Flat Washer

12

6

WASHER024

M8 Spring Washer

13

6

BOLT226

M6 x 45 Cap HD Skt Screw

14

12

BOLT225

M6 x 40 Cap HD Skt Screw

15

6

BOLT224

M6 x 12 Cap HD Skt Screw

16

18

NUT043

M6 Nyloc Nut

17

24

WASHER003

M6 Flat Washer

7

DFG460-4

Operating Manual

MAIN DRIVE ASSEMBLY

ITEM

QTY

PART NUMBER

DESCRIPTION

1 1 5520

Gearbox Retaining Plate

2 1 5539

Gearbox Lock Washer

3 2 5513

Yoke & Clevis Pin

4 1 5511

Gearbox

5 1 6058

Electric Motor

6 1 5512

Dust Skirt

2 7331

Dust Skirt Spring

7 1 5503

Cowl 8 1

SPCG/LNM20

Cable Gland

9 1 SP210-409

16A 4Pin Trailing Plug

10

1

7520

2-5mm² Armoured Cable

11

2

BOLT094

M16 x 45 Set Screw

12

2

WASHER008

M16 Flat Washer

13

4

BOLT082

M12 x 40 Set Screw

14

1

BOLT282

M12 x 30 Cap HD Skt Screw

15

4

WASHER006

M12 Flat Washer

16

4

BOLT263

M10 x 30 Cap HD Skt Screw

9

DFG460-4

Operating Manual

PIVOT FRAME ASSEMBLY

ITEM

QTY

PART NUMBER

DESCRIPTION

1 1 5501

Frame

2 1 5540

Frame Lock Washer

3 1 5508

Cover Plate

4 3 5515

Thumb Screw

5 2 BOLT064

M10 x 40 Set Screw

6 1 BOLT062

M10 x 30 Set Screw

7 2 NUT005

M10 Nut

11

DFG460-4

Operating Manual

AXLE FRAME ASSEMBLY

ITEM

QTY

PART NUMBER

DESCRIPTION

1 1 5541

Axle Assembly

2

14

WASHER009

M20 Flat Washer

3 2 2013

Rear Wheel

4 1 5031

Oilite Bush

5 2 BOLT042

M8 x 20 Set Screw

6 2 WASHER053

M8 x 40 Repair Washer

13

DFG460-4

Operating Manual

ADJUSTABLE STRUT ASSEMBLY

ITEM

QTY

PART NUMBER

DESCRIPTION

1 1 5509

Height Rod

2 1 5510

Hose Y Piece

3 1 5518

Height Screw

4 1 9122

Yoke & Clevis Pin

5 1 5519

Handwheel

6 2 BOLT227

M6 x 16 Cap HD Skt Screw

7 2 NUT043

M6 Nyloc Nut

8 2 WASHER003

M6 Flat Washer

9 1 BOLT302

M6 Grub Screw

15

DFG460-4

Operating Manual

HANDLE ASSEMBLY

ITEM

QTY

PART NUMBER

DESCRIPTION

1 2 9122

Yoke & Clevis Pin

2 1 5502

Handle Assembly

3 2 5516

Handle Clamp

4 2 5516

Handle Clamp

5 1 5517

Handle Bar

6 1 9134

Bearing

7 2 9104

Hand Grip

8 2 TI/011

Tube End

9 4 BOLT045

M8 x 35 Set Screw

10

2

BOLT043

M8 x 25 Set Screw

11

4

BOLT042

M8 x 20 Set Screw

12

2

NUT044

M8 Nyloc Nut

13

12

WASHER004

M8 Flat Washer

17

DFG460-4

Operating Manual

DRIVE GEAR ASSEMBLY

ITEM

QTY

PART NUMBER

DESCRIPTION

1 1 5524

Drive Gear

2 1 5521

Bearing Housing

3 1 5523

Bearing Spacer

4 2 5522

Bearing

5 4 BOLT244

M8 x 35 Cap HD Skt Screw

19

DFG460-4

Operating Manual

INTERMEDIATE GEAR ASSEMBLY

ITEM

QTY

PART NUMBER

DESCRIPTION

1 3 5536

Idler Gear

2 3 5534

Idler Post

3 3 NUT046

M13 Nyloc Nut

4 3 WASHER006

M12 Flat Washer

5 3 5535

Bearing

6 3 5537

Circlip (Gear)

7 3 5538

Circlip (Post)

21

DFG460-4

Operating Manual

DRIVEN GEAR ASSEMBLY

ITEM

QTY

PART NUMBER

DESCRIPTION

1 3 5526

Bearing Housing

2 3 5527

Bearing Spacer

3 3 5528

Driven Shaft

4 3 5529

Driven Gear

5 3 9113A

Key 6 3

5533

Tool Drive Plate

7 3 5531

Driven Plate

8 6 2213

Bearing

9 3 5530

Circlip

10

9

5532

Rubber Coupling

11

9

BOLT227

M8 x 16 Cap HD Skt Screw

12

9

BOLT145

M8 x 12 Csk Skt Screw

13

9

NUT044

M8 Nyloc Nut

14

9

WASHER004

M8 Flat Washer

23

DFG460-4

Operating Manual

ELECTRICAL COMPONENTS

QTY

PART NUMBER

DESCRIPTION

1

SP030317

Panel & Back Plate

1

5557

Frequency Inverter

1

SPVCCF2

Isolator 40 Amp

1

SPGV2ME20

Breaker/Overload

1

SPLC1D18M7

Contactor

1

SPLADS2

Delay Timer

1

SPZB4BS54

Emergency Stop Button

1

SPZB4BZ102

Stop Switch

1

SPZBY9330

Emergency Stop Legend

1

SPZB4BV4

Panel Lamp

1

SPZB4BV04

Lens

1

SPZB4BVM3

Green LED

1

SPZBE101

N/O Contact

1

SPZB4BW333

Green Lens Start Button

1

11124

Speed Control Knob Kit

2

SP541-2931

1 Amp Fuse

2

FUSE-ASK1

Fuse End Holder

1

FUSE-EW35

Fuse End Stop

1

SP410-409

16Amp 4Pin Panel Socket

4

9245

Rubber Mount

2

SPCG/LNM20

Cable Gland

5

7562

2.5mm² Cable (mtr)

1

SP7302

220v 16Amp Schuko Trailing Plug

24

DFG460-4

Operating Manual

SPECIFICATION SHEET

Type

DFG 460 Electric

Part number

DFG460-4

Power output

2.2kw

Voltage

220v

Cycles

50

Head speed r.p.m.

0-231 variable

Engine/motor speed r.p.m.

0-1420

Machine dimensions (mm)

Length
Width
Height
Weight (kg)

1040
470
1080
124

25

DFG460-4

Operating Manual

WARRANTY

The standard warranty period of this equipment is 12 months from the despatch date in
accordance with the company Conditions of Sale (copy attached).

Warranty start date:

As despatch date

Model:

DFG 460-4

Serial no:

Customer name:

Customer Address:

Manufacturer:

SPE International Ltd

Honeyholes Lane

Dunholme

Lincoln

LN2 3SU

England

telephone:

[phone]

fax:

[phone]

Email:

[e-mail]

Web site:

www.spe-int.com

Distributor:

26

DFG460-4

Operating Manual

DECLARATION OF CONFORMITY

WE

SPE INTERNATIONAL LTD

OF
Honeyholes Lane
Dunholme
Lincoln
LN2 3SU

DECLARE that under our sole responsibility for the supply/manufacture of the product
(Description/name) DFG 460 Floor Grinder
(Model/type) DFG 460-4
to which this declaration relates is in conformity with the following standards and other normative

documents following the provisions of Directive 2006/42/EC.

....................................................

Brian Jacklin – Technical Manager

SPE INTERNATIONAL LTD

27

DFG460-4

Operating Manual

The quotation overleaf and any order placed following such quotation are subject to the following conditions of sale in which SPE
International Limited is referred to as the “Company”.

1. Validity of quotation

No order received from a customer by the Company shall constitute a contract until accepted in writing by the Company.

2. Prices

Prices quoted by the Company are firm for 30 days only or until previously withdrawn. Unless otherwise stated all prices are exclusive
of any applicable Value Added Tax for which the customer shall be additionally liable to the Company.

3. Delivery

Delivery periods and dates are given in good faith but are not the subject of any warranty or condition and time shall not be of the
essence of the contract in these respects. No liability will attach to the Company if delivery periods or dates are not met for any
reason whatsoever.

4. Payment

Save as may otherwise be agreed in writing the customer shall pay the price in full on or before the estimated delivery date
whereupon the Company shall raise a receipted invoice. Each invoice includes an Overdue Account Levy of 5% of the total invoice
value inclusive of VAT. Subject to payment in full being made on or before the due date a sum equal to the Overdue Account Levy
shall be credited to the customers account with the Company. Until such time as payment in full has been made the Company shall
be under no obligation to allow or effect of any goods to the customer.

5. Warranty

The Company warrants that all goods supplied by it will correspond to their specifications and will be free from defects in materials or
workmanship for a period of 12 months from the date of delivery. The Company’s obligation in the event of a breach of this wa rranty
is limited to the repair or replacement of any defective goods which shall be returned at the cost and expense of the customer to the
Company. This warranty is given in lieu of all the other warranty or conditions expressed or implied (whether by statute or otherwise)
and is subject to the following conditions:-

5.1 Claims must be notified in writing to the Company within seven days from the date of delivery or (where the defect is not

apparent on reasonable inspection) as soon as practicable after discovery of the defect.

5.2 The Company shall be under no liability in respect of any defect in the goods arising from any drawing, design or specification

supplied by the customer.

5.3 The Company shall be under no liability if the defect or failure in the reasonable opinion of the Company arises from wilful

damage or misuse, negligence by the customer or any third party. Failure to follow the Company instructions, usage of non­recommended parts and materials, alteration or repair of the goods without the prior approval of the Company or non-recommended
maintenance.

5.4 The Company shall be under no liability if the price for the goods has not been paid by the due date for payment.

5.5 The above warranty does not extend to:-

5.5.1 Parts, materials or equipment not manufactured by the company in respect of which the customer shall be entitled only to the

benefit of any such warranty or guarantee as is given by the manufacturer to the Company.

5.5.2 Any component part of the goods or associated parts coming into contact with abrasive elements or dust within surface

Preparation equipment.

5.5.3 Fair wear and tear of moving parts within the goods.

5.6 Except in the case of death or personal injury caused by the Company negligence, the Company shall not be liable for any

consequential loss or damage (whether for loss of profit or otherwise) or other claims for consequential compensation.

6. Carriage

Packing, carriage and insurance charges in respect of delivery of the goods to the customer will be charged to the customer at cost to
the company.

7. Damage in Transit

The company does not accept any liability for loss or damage to the goods while in transit to the customer.

8. Risk

The risk in the goods shall pass to the customer on delivery to the customer or (if earlier) when possession of the goods is taken by a
carrier for delivery to the customer.

9. Force Majeure

The Company shall not be liable to the customer or be deemed to be in breach of any contract with the customer by reason of any
delay in performing or any failure to perform any obligation of the Company obligation in relation to the goods if the delay or failure
was due to force majeure or to any other cause beyond the Company’s reasonable control.

10. Reservation of Title

The goods sold under these conditions shall remain the absolute property of the Company and legal title in the goods shall remain
vested in the Company until payment in full of all amounts invoiced or due to the Company in respect of the goods. If the customer
shall enter into liquidation have a winding up order made against it or have a Liquidator, receiver, administrator or administrator
receiver shall be appointed over its assets, income or any part there of before the property in the goods has passed in accordance
with this condition the Company shall be entitled immediately after giving notice of its intention to repossess any goods to enter upon
the premises of the customer with such transport as may be necessary and to repossess any goods to which it has title under this
condition. No liquidator, receiver, administrator or administrative receiver of the customer shall have authority to sell goods to which
the Company has title without the prior written consent of the Company.

11 Insolvency of Customer

If the customer being a body corporate, shall pass a resolution or suffer an order of the Court to be made for winding – up, or if a
Receiver, Administrator or Administrative Receiver shall be appointed or, being an individual or partnership, shall suspend payment ,
propose or enter into any composition or arrangement with his or their creditors, or have a bankruptcy order made against him or
them, then the Company shall have the right, without prejudice to any other contract with the customer, not to proceed further with the
contract and shall be entitled to charge for work already carried out ( whether completed or not) and for goods and materials already
purchased for the customer such charge to be an immediate debt due from the customer.

12. Patent Rights, etc
The acceptance of a quotation includes the recognition by the customer of the Company under any patents, trademarks, registered
designs or other intellectual property rights relating to the goods and the customer undertakes that patent numbers, trademarks or
other trade markings on goods supplied shall not be obliterated, altered or defaced.

13. Applicable Law
These conditions shall be governed by and construed in accordance with English law and parties acknowledge and accept the

exclusive jurisdiction of the English Courts.

CONDITIONS OF SALE

28