SPE DFG400-3 User manual

DFG400-3 & 3DP
COMPACT 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]

DFG400-3 & 3DP
COMPACT FLOOR GRINDER
Operating Manual
DFG400
COMPACT FLOOR GRINDER
This manual covers to the best of our knowledge the operation and maintenance to the
DFG400 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. Failure to follow
these instructions could result in damage to the machine and/or serious personal injury or
death.
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.
DFG400-3 & DFG400-3DP
The difference between the two variations of machine is as follows:
DFG400-3 This is supplied as standard, fitted with 2no drive plates (part no 6435L (L/H)
and 6435R (R/H)) for use with carborundum grinding blocks, etc with the wedge retaining
system.
DFG400-3DP This is supplied as standard fitted with 2noadaptorplates (partno 5064A)which
will allow the use of diamond grinding plates, etc

DFG400-3 & 3DP
COMPACT FLOOR GRINDER
Operating Manual
INDEX
Page No
1 Starting Work
2 Changing the Grinding Blocks and Heads
3 Maintenance
4 Maintenance Checklist
5 Safety
6-7 Accessories
8 Spare Parts Breakdown
9 Body Components
10 Drive Components (DFG400-3)
11 Drive Components (DFG400-3DP)
12 Wiring Diagram
13 Electrical Components
14 Specifications
Electrical Requirements
15 Noise/Vibration Assessment
16 Warranty
17 Declaration of Conformity
18 Conditions of Sale

DFG400-3 & 3DP
COMPACT FLOOR GRINDER
Operating Manual
STARTING WORK
Check the following prior to starting the equipment.
Check all nuts and bolts for tightness
Check the drive belt condition and tension
Check the plugs and cables for damage
1. Before starting work, check that the set up of the machine and the grinding heads has
been completed as described below to ensure even wear to the heads.
2. It is vital at this stage that the machine should be set to grind the floor along the same
plane. Incorrect set up will result in uneven head wear, vibration and damage to the flexible
couplings that support the heads.
3. Raise the dust skirt by approximately 20mm and check that the grinding heads are in full
contact with the floor surface.
4. With the machine set on the floor surface to be ground, check the level of the floor with a
spirit level. Then place the spirit level on the side of the machine above the dust skirt.
Adjust the rear wheel height using the hand wheel (part no 9135), until the level of the
machine is the same as the floor level.
5. Push the dust extraction skirt down to the floor surface.
6. Connect the vacuum hose to the dust extraction port, if a dust control vacuum is being
used. We recommend the SPE VAC316 3 motor vacuum for dust control.
7. Ensure that the power supply is correct for the machine (see page 14 for further details).
Connect the machine to the power supply.
8. To start the machine
Lift the grinding heads slightly by tipping the machine onto its rear wheels.
Press the green start button on the panel to start up the machine.
Lower the machine onto the floor, moving the heads evenly across the surface to ensure a
smooth ground finish.
9. To stop the machine, press the red stop button on the panel.
Never allow the machine to stop moving whilst grinding heads are in contact with the
surface.
1

DFG400-3 & 3DP
COMPACT FLOOR GRINDER
Operating Manual
CHANGING THE GRINDING BLOCKS
1. Disconnect from the power supply.
2. Tilt the machine backwards onto its handle. The machine must be secured and
supported.
3. Drive out the wooden wedge securing the grinding block and remove the remains of the
grinding block from the plate. Repeat this process for all the blocks.
4. Place a new block into the holder on the plate and hold whilst inserting a new wooden
wedge into the inside edge of the block. Drive in the wooden wedge to secure the block
firmly. Repeat this process for all the blocks.
5. Lower the machine back to the upright position.
6. Check machine level (see page 1) and carry out adjustments if necessary.
7. Reconnect to the power supply.
CHANGING THE GRINDING HEADS
1. Disconnect from the power supply.
2. Tilt the machine backwards on to its handle. The machine must be secured and
supported.
3. Make sure the grinding heads are cool to the touch.
4. Use an allen key to undo the countersunk screws securing the Grinding Heads to the
adaptor plates.
5. Remove the grinding heads and replace.
6. Ensure the grinding heads are seated to the adaptor plates correctly prior to tightening
the counter sunk screws diagonally.
7. Lower the machine back to the upright position.
8. Check machine level (see page 1) and carry out adjustments if necessary.
9.Reconnect to the power supply.
CHECK FOR CORRECT WEAR RATE AFTER QUARTER OF AN HOUR AND AGAIN AT
HALF AN HOUR INTERVALS - THIS WILL GIVE AN IDEA OF WEAR RATE
2

DFG400-3 & 3DP
COMPACT FLOOR GRINDER
Operating Manual
MAINTENANCE
Prior to any maintenance or adjustment disconnect the machine from the power supply.
AFTER USE:
-Clean the machine to remove all build up of dust and surface residue. If using a hose
pipe or pressure water 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 drive belts will give a long and trouble free operating life if basic procedures are
followed. The drive belts are tensioned by adjusting the motor mounting plate. It is
important that the drive belts are not over tensioned. Serious damage could be caused
to the gearboxes and/or drive motor if the belts are excessively tight.
-All components should be checked daily for tightness and the drive belts for tension.
-The flexible drive couplings that support the grinding heads should be checked on a
weekly basis.
-Any excess vibration due to uneven head wear should result in the heads being
changed to eliminate damage to couplings.
3

DFG400-3 & 3DP
COMPACT FLOOR GRINDER
Operating Manual
BASIC MAINTENANCE CHECKLIST
DAILY:
Check all nuts and bolts for tightness.
Check the condition of the grinding heads
Check the belt tension and condition
Check the plugs and cables
WEEKLY:
All of the above with the following.
Grease all moving parts on the height adjustment mechanism
Check the flexible drive couplings
Check the support wheels and grease
MONTHLY:
All of the above with the following,
Strip down fully the winding mechanism
Clean all threads and re grease
Check gearbox flexi-coupling
Check gearbox oil seals
4

DFG400-3 & 3DP
COMPACT FLOOR GRINDER
Operating Manual
SAFETY
Only trained operatives should be allowed to work the DFG400 floor grinder.
All operatives should wear ear defenders, goggles and an effective dust mask. Note: It is
possible that the noise level produced by the DFG400 could exceed 90dbA. Personal
noise protection must be worn and the equipment must be used in line with guidelines laid
down by the Health & Safety Executive.
Never leave the DFG400 unattended whilst in use. Always stop the motor prior to leaving
the machine.
Always ensure that all power leads are disconnected before attempting to service the
machine. The service of electrical components should be carried out by authorised
personnel. Never tip the machine completely backwards until the grinding plates have
stopped rotating, just raise slightly.
Vibration will occur at various levels dependent on the attachments and work being
completed. However SPE have assessments conducted under test conditions detailed in
the operating manual (see page 15). It is recommended that additional 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.
Never operate the machine without a dust extraction skirt or with the dust extraction skirt
raised.
NOTE:
1. NEVER OPERATE THE COMPACT FLOOR GRINDER WITHOUT BELT GUARDS
FITTED
2. NEVER OPERATE THE COMPACT FLOOR GRINDER IN WET CONDITIONS AS
ELECTRICAL COMPONENTS ARE NOT WATERPROOF
5

DFG400-3 & 3DP
COMPACT FLOOR GRINDER
Operating Manual
ACCESSORIES
Part No
Description
Application
6401
Economy grade 250mm
10 segment (blue)
Economical removal of most types of
adhesives and surface contaminants.
Excellent for using on rougher surfaces
as a first grind. Can be used wet or dry.
6402
Super Agressive 250mm
10 segment (red)
Designed for the removal of S/L and
epoxy coatings in a commercially viable
way. Can be used for the majority of
aggressive grinding applications and will
give extended wear on heads.
Can be used wet or dry.
6403
Standard Grade 250mm
16 segment (blue)
Removal and grinding of most types of
concrete floor in preparing for follow on
coatings. General all purpose head for
most grinding works.
Can be used wet or day.
6404
High performance 250mm
20 segment (blue)
Fast removal and grinding of most types
of plain and painted concrete floors. Will
key floors for coatings, removal of high
spots, lip edges etc. Suitable for first and
second stage grinding to terrazzo and
aggregated seamless floors.
Can be used wet or dry.
6405
Button head 250mm
16 segment (blue)
For the removal of the thicker adhesive
on sand / cement screed whether open or
closed. Will cope with large volume areas
in a cost effective manner. To be used
with softer elastomeric and thin film
coatings.
6403C
Fine grit 250mm 16 segment
(purple)
Finishing and polishing of cementitious
polyurethane, epoxy based
terrazzo,terrazzo tiles and decorative
aggregated concrete flooring.
6

DFG400-3 & 3DP
COMPACT FLOOR GRINDER
Operating Manual
6435L
Carborundum grinding block holder
drive plate (L/H)
Drive plate for the carborundum grinding
blocks
6435R
Carborundum grinding block holder
drive plate (R/H)
Drive plate for the carborundum grinding
blocks
6416
6417
6418
Carborundum grinding blocks
Fine
Medium
Coarse
For economical polishing and grinding
removal of high spots, over watered
slabs, rain damaged slabs, lip edges etc.
6436
Standard grade Diamond block.
Diamond grinding block to be used on
DFG400. Removal of old coatings and
grinding most types of concrete floor.
Secured using wedge
P53534
Wooden wedge
To secure grinding blocks into DFG400
floor grinder
5064A
Adaptor plate
Drive adaptor plate for use of diamond
plates, etc.
7

DFG400-3 & 3DP
COMPACT FLOOR GRINDER
Operating Manual
8

DFG400-3 & 3DP
COMPACT FLOOR GRINDER
Operating Manual
ELECTRICAL COMPONENTS
QTY
DESCRIPTION
SPE PART NO.
1
Panel box
SP2518-11
1
Hinge kit
SP190005
1
Back plate
9249
1
On/Off switch
SPLM2B7223
1
Contactor
SPBF161023
1
Trip
SP60HD216
1
Overload
SPRF2515
1
On/Off contact (N.O)
SPLM2TC10
1
On/Off contact (N.C.)
SPLM2TC01
1
Contact holder
SPLM2AU120
2
Conduit gland
9258
1
Conduit (MTR)
9259
13

DFG400-3 & 3DP
COMPACT FLOOR GRINDER
Operating Manual
SPECIFICATION SHEET
Specifications
Type
Electric 1 Phase
Part Number
DFG400-3
DFG400-3DP
Power Output
2.2kw
Voltage
220v
Cycles
50hz
Head Speed r.p.m.
245
Engine motor speed r.p.m.
2800
Machine Dimensions (mm)
Length
Width
Height
Weight (kg)
820
560
700
86
Ballast Weight (kg)
-
Electrical Requirements
Volts
Plug Size
Cable Size (mm)
Norm Cable Length
Transformer
Generator
220v
16 Amp 3 Pin
2.5 - 3 Core
30 metres
10 kva
14

DFG400-3 & 3DP
COMPACT FLOOR GRINDER
Operating Manual
RECORD OF NOISE AND VIBRATION ASSESSMENT
Manufacturer:
SPE
Type:
Compact Floor Grinder
Model No.
DFG400-3 Electric
Operation :
Concrete floor surface
Inserted Tool:
Carborundum blocks
HAV Note:
Operc
HAND-ARM VIBRATION
Frequency Weighted Energy Equivalent Accelerations (ah,w)
Measurement
Position
Acceleration (m/s2)
Vector Sum
Handle
1.2
NOISE LEVELS
Sound Power Level (LWA)
LWA at Octave Band Centre Frequency (Hz)
Sound
Power
Level
LWA
63
125
250
500
1000
2000
4000
8000
50.8
72.3
78.8
88.2
85.5
98.5
94.3
83.5
100.4
Operator's Ear
LAeq,T at Octave Band Centre Frequency (Hz)
Overall
Level
(LAeq,T)
LPeak
dB(C)
63
125
250
500
1000
2000
4000
8000
34.4
58.4
62.7
76.2
73.6
82.5
75.8
63.9
83.8
101.3
15

DFG400-3 & 3DP
COMPACT FLOOR GRINDER
Operating Manual
WARRANTY
The standard warranty period of this equipment is 12 months from the date below in
accordance with the company Conditions of Sale (copy attached).
Warranty start date:
As despatch date
Model:
DFG400
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
16

DFG400-3 & 3DP
COMPACT FLOOR GRINDER
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) DFG400 Compact Floor Grinder
(Model/type) DFG400
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
SPE International Ltd, Honeyholes Lane, Dunholme, Lincoln. LNS 3SU England
Tel: [phone] Fax: [phone] Web: www.spe-int.com e-mail: [e-mail]
17

DFG400-3 & 3DP
COMPACT FLOOR GRINDER
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 warranty
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 non-
recommended 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
18