Elcometer 1720 User manual

en
Elcometer 1720
Abrasion Tester
Abrasion and Washability Tester
Operating Instructions
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English
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The product is Class A, Group 1 ISM equipment according to CISPR 11
Group 1 ISM product: A product in which there is intentionally generated and/or used
conductively coupled radio-frequency energy which is necessary for the internal
functioning of the equipment itself.
Class A product are suitable for use in all establishments other than domestic and those directly
connected to a low voltage power supply network which supplies buildings used for domestic
purposes.
The Elcometer 1720 Tester meets the Electromagnetic Compatibility and Machinery Directives.
is a registered trademark of Elcometer Limited.
Material Safety Data Sheets for the scrub media available as an accessory for the Elcometer 1720
are available to download via our website:
Elcometer 1720 Scrub Media SC-1 and SC-2
http:/www.elcometer.com/images/MSDS/elcometer_1720_scrub_media.pdf
Elcometer 1720 Scrub Media ST-1
http:/www.elcometer.com/images/MSDS/elcometer_1720_scrub_media_st1.pdf
All other trademarks acknowledged. © Copyright Elcometer Limited. 2009/2013.
All rights reserved. No part of this Document may be reproduced, transmitted, transcribed, stored
(in a retrieval system or otherwise) or translated into any language, in any form or by any means
(electronic, mechanical, magnetic, optical, manual or otherwise) without the prior written permission
of Elcometer Limited.
A copy of this Instruction Manual is available for download on our Website via www.elcometer.com.
Doc.No. TMA-0316 Issue 08
Text with Cover No: 19332
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CONTENTS
Section Page
1 About your tester. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1 These instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.2 Standards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.3 What the box contains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.4 Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Caution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 The parts of your tester . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3 Access panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.4 Power input and main on/off switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.5 The control panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Configuring your tester. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4 The display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.1 Display - during operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.2 Display - error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.3 Display - menus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5 Testing a specimen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6 Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.1 For Elcometer 1720 Abrasion and Elcometer 1720 Abrasion &
Washability Testers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7 Adjusting stroke length of the carriage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
8 Special tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
8.1 Testing Resistance of Markings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
8.2 EN 607301-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
8.3 Testing fabrics using the ‘Crockmeter’. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
9 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
9.1 Lubricate the carriage mechanism. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
9.2 Check the pumping system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
9.3 Check conformity to standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
9.4 Reconditioning nylon brushes (Tool 2, ASTM 2486) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
9.5 Faults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
10 Technical specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
11 Spare parts and accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
12 Related equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
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Thank you for purchasing this Elcometer 1720 Tester. Welcome to Elcometer.
Elcometer are world leaders in the design, manufacture and supply of inspection equipment for
coatings and concrete. Our products cover all aspects of coating inspection, from development
through application to post application inspection.
The Elcometer 1720 Tester, is a world-beating product. With the purchase of this product you now
have access to the worldwide service and support network of Elcometer. For more information visit
our website at www.elcometer.com
1 ABOUT YOUR TESTER
The Elcometer 1720 Tester is a robust, reliable and extremely flexible machine. The machine
enables testing to be carried out on a wide range of materials including; paint, lacquers, inks,
coatings, leather, wood, plastics, printed material, fabrics, etc.
All test tools are held in a carriage which moves back and forth over a specimen of the material
being tested. Stroke length and speed of the carriage are adjustable.
The number of cycles per test is adjustable. When the set number of cycles has been completed,
the tester stops automatically. A separate counter records the total number of cycles performed by
the tester.
Some versions of the tester include a liquid reservoir and pump which will provide an adjustable
dose of liquid per cycle if required.
1.1 These instructions
These instructions describe the operation of the following Elcometer 1720 models:
• Elcometer 1720 Abrasion Tester
- 2 lane model
• Elcometer 1720 Abrasion Tester - 4 lane model
• Elcometer 1720 Abrasion and Washability Tester - 2 lane model
• Elcometer 1720 Abrasion and Washability Tester - 4 lane model
1.2 Standards
Depending upon model, the Elcometer 1720 can be used in accordance with the following National
and International Standards: AS/NZS 1580.459.1, ASTM D 2486, ASTM D 4213:92, ASTM D 4213,
ASTM D 3450, ASTM D 4488, ASTM D 4828, ASTM F 1319, DIN 53778-2:83, ECCA T11,
EN 13523-11, EN60730-1- A, GME 60269, ISO 105-X12, IS0 11998, Renault/PSA D45 1010.
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1.3 What the box contains
• Elcometer 1720 Abrasion Tester (2 lane or 4 lane model), or
Elcometer 1720 Abrasion and Washability Tester (2 lane or 4 lane model)
• Metal strip, thickness 250 µm (10 mil) - for ASTM D2486 standard
• Sample Drip Tray
• 1x Glass sheet (2 lane); 2x Glass sheet (4 lane)
• 1x Specimen holding frame (2 lane); 2x Specimen holding frame (4 lane)
• Liquid dosing bottle (not supplied with models M202 and M204)
• Liquid delivery pipe (not supplied with models M202 and M204)
• 2 x Liquid drain pipe (not supplied with models M202 and M204)
• Screwdriver, T-Bar and Hexagonal Wrench for instrument setup (behind access cover at rear
of tester)
• Operating instructions
Tools are not supplied as standard and must be ordered separately. For the complete range of tools
available, see “Tools” on page 13.
1.4 Packaging
The Elcometer 1720 Tester is packed in a cardboard, wood and foam package. Please ensure that
this packaging is disposed of in an environmentally sensitive manner. Consult your local
Environmental Authority for further guidance.
To maximise the benefits of your new Elcometer 1720 please take some time to read these
Operating Instructions. Do not hesitate to contact Elcometer or your Elcometer supplier if
you have any questions.
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2 GETTING STARTED
2.1 Caution
The Elcometer 1720 has been manufactured with your safety in mind. However,
improper use can result in damage to the tester. Please observe the precautions
discussed in these operating instructions.
To reduce the risk of electric shock do not open the housing of the tester. There are no user-
serviceable parts inside. To reduce the risk of fire or electric shock, do not expose the tester to rain
or excess moisture.
The tester is very heavy - see “Technical specification” on page 21:
• Manual lifting of the tester must be carried out by at least two people.
• The tester must be placed on a flat level bench suitable for the load imposed by the tester.
The tester must be plugged into a suitably rated mains switched socket outlet. The disconnect
device of the tester is the plug and mains socket and these must be readily accessible to the user.
The mains plug on your Elcometer 1720 may be fitted with a fuse. When replacing this fuse, ensure
a fuse of the correct rating is used.
2.2 The parts of your tester
Figure 1. Parts of the tester (Abrasion and Washability Tester, 2 lane model)a
a. Liquid flow-control valves are not fitted to models M202 and M204.
Carriage
Holding frame
clamp
Specimen
holding frame
Liquid flow-control valves (see footnote)
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2.3 Access panel
A removable panel at the rear of the tester
gives access to the pump, the power input
socket and the tools (Figure 2). To remove the
panel, unscrew the thumbscrew at either side
of the panel.
Note: The pump and associated pipework is
only fitted to the following Elcometer 1720
model:
• Abrasion and Washability Tester
The Elcometer 1720 Abrasion Tester is not
fitted with a pump or pipework.
2.4 Power input and main on/off switch
The power input socket is located behind the
access panel at the rear of the tester (Figure
3). A fuse protects the power input socket - see
“Technical specification” on page 21 for fuse
rating.
The mains on/off switch is on the side of the
tester.
T-bar tool
Hexagonal
Wrench
ScrewdriverPump
Figure 2. Pump, tools and power input
behind access cover
Figure 3. Power input socket, fuse and
mains on/off switch
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2.5 The control panel
The tester is operated using the controls (Figure 4) mounted on the front panel of the machine.
Figure 4. Control panel
Note: The above display shows 'Pump: OFF' and 'Mode: VAR' These features and their associated
control button functions are not available on Elcometer 1720 Abrasion Tester models.
Off Button Speed
Adjuster
Numeric Keypad for setting
number of cycles
1. Selects mode (ISO/VAR)
2. Scrolls up through
menus and lists
Stops tester
1. Accesses preset cycles
2. Saves preset cycles
3. Selects menu items
1. Accesses the menu
2. Escapes out of menus
3. Clears error messages
(push to
release)
1. Switches pump on/off
2. Scrolls down through
menus and lists
Starts tester
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3 CONFIGURING YOUR TESTER
Your tester is configured using the keypad and controls on the front of the machine. The following
four parameters can be adjusted:
Parameter Options To adjust parameter, use this control...
Modea
a. Mode parameter is not available on Elcometer 1720 Abrasion Tester models
VAR (variable speed) or
ISO (fixed speed - 37 cycles per
minute)
Note: ISO mode is used for
ASTM, DIN and ISO test methods
Pumpb
b. Pump parameter is not available on Elcometer 1720 Abrasion Tester models
ON or
OFF
Speed Cycle/
Min
Carriage speed (cycles per
minute).
Note: This parameter cannot be
adjusted when mode is set to
ISO.
Preset Cycles Number of complete back and forth cycles of the carriage during
a test.
(Press , use the numeric keypad to
enter the number of cycles and then press
again)
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4 THE DISPLAY
The contents of the display vary according to which mode has been selected (ISO or VAR) and
whether the menus are displayed.
Note: The ‘Pump’ and ‘Mode’ parameters are not available on Elcometer 1720 Abrasion Tester
models.
4.1 Display - during operation
Mode Tester Typical display Description
VAR
Stopped
• Mode = VAR (variable speed)
• Pump = On or Off
• Bar graph = analogue representation of
speed
• Speed Cycle/Min = Carriage speed (value
set by user by rotating speed adjuster knob)
• Preset Cycle = Number of cycles in test
(value set by user)
• Total Count = number of cycles completed
(this value counts up)
Started • Remaining = number of cycles left until test
is complete (this value counts down)
ISO
Stopped
• Mode = ISO (fixed speed)
• Pump = On or Off
• Speed Cycle/Min = Carriage speed (fixed at
37 cycles per minute)
• Preset Cycle = Number of cycles in test
(value set by user)
• Total Count = number of cycles completed
(this value counts up)
Started • Remaining = number of cycles left until test
is complete (this value counts down)
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4.2 Display - error
Under certain conditions the following error message may be displayed:
The two conditions when this error is likely to occur are:
• When the tester is operating in VAR mode (variable speed), if a
significant adjustment to the speed has been made in a short time
period (by rotating the speed adjuster knob quickly).
• When the tester is operating in ISO mode (fixed speed), if the carriage speed differs by more
than 1 cycle per minute from 37 cycles per minute for a significant period (in this event the
tester would be out of specification).
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4.3 Display - menus
The menu gives access to information about your tester, language setup and reset of the counter.
To view the menu, while the tester is stopped, press (the menu can only be accessed when the
tester is stopped - pressing has no effect when the tester is started). When viewing the menus
the Start and Stop buttons do not function.
Menu Typical display Description
Press
• Use the scroll up and scroll down buttons to
navigate to the menu item required and then
press to display. The selected menu will be
displayed.
• Press at any time to escape from a menu.
Reset Total
Count
• Resets the total counter to zero.
• Press Yes ( ) to reset, or No ( ) to leave
unchanged.
Gauge
Information
• Elcometer 1720 model
(Abrasion, Washability )
• Max Stroke = maximum movement of carriage
(Abrasion and Washability = 300 mm
• Max Speed = maximum speed of carriage
(Abrasion and Washability = 65 Cycles/Min
Contact
• Use the scroll up and scroll down buttons to
navigate to the Elcometer contact details required
(UK, USA, Asia, Belgium, Canada, France and
Germany).
Language
• The current selected language is shown at the
bottom of the display.
• Use the scroll up and down buttons to navigate to
the language required.
• Press - the cursor will start to flash.
• Use the numeric keypad to select required
language (0, 1, 2, etc.)
• Press - the cursor will stop flashing.
• All displays will then be shown in the selected
language.
• To exit, press (when the cursor is not flashing)
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5 TESTING A SPECIMEN
1. Switch on tester
• Connect tester to mains supply.
• Press switch at side to switch on tester.
2. Load specimen
• Raise carriage (Figure 5).
• Release holding frame clamps.
• Remove specimen holding frame.
• Position specimen.
• Replace specimen holding frame.
• Tighten holding frame clamps.
• Lower carriage.
Note: Holding frame clamps can be adjusted
to suit samples of varying thickness.
3. Connect liquid pumping and drainage
system
(For wet testing on Elcometer 1720
Abrasion and Washability Tester )
• Connect one end of liquid delivery pipe to
blue connector at side of tester and push
other end of pipe to the bottom of the
liquid dosing bottle (Figure 6).
• Referring to Figure 6, connect end of one
liquid drain pipe to connector (a) on
sample tray, and end of other liquid drain
pipe to connector (b) on side of tester.
Place other ends of both pipes into a
container suitable for liquid waste.
Figure 5. Carriage raised and holding frame
clamp released
Figure 6. Liquid dosing bottle (connected to
tester) and drain connectors ‘a’ and ‘b’
Connector ‘a’
Connector ‘b’
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4. Purge air from liquid delivery pipes
(For wet testing on Elcometer 1720 Abrasion and Washability Tester)
Note: To facilitate adjustment of the flow control valves, purging the liquid delivery pipes should
always be performed with the carriage stationary.
• Close all flow control valves (Figure 7)
using the screwdriver supplied with your
tester (see “Access panel” on page 5).
• Press pump on/off button to switch on
pump.
• Purge air from longest liquid delivery pipe
first (valve nearest front of tester):
• Open flow control valve. Liquid will drip
onto specimen.
• Wait until there are no more air bubbles
in liquid delivery pipe.
• Close this flow control valve.
• Working from front to back, repeat
previous step on each flow control valve
until air has been purged out of all liquid
delivery pipes.
5. Adjust liquid flow rate
(For wet testing on Elcometer 1720 Abrasion and Washability Tester)
• Working from back to front, open and adjust all flow control valves until required drip rate is
achieved.
6. Fit tool
• Place tool (or tools) into carriage (Figure 8).
7. Configure tester
• See “Configuring your tester” on page 7.
8. Start test
• Press Start button to start carriage.
• The carriage will stop automatically when
the preset number of cycles is complete. If
the pump was switched on, it will stop
automatically also.
Note: After operation with the pump on, and
before raising the carriage, close all the flow
control valves. This prevents air entering the
pipes when the carriage is raised. When the
carriage is lowered, open the flow control
valves again and adjust to the previous setting. If the carriage is left up for a period of time it will be
necessary to re-purge the pipes.
Note: Do not use any type of liquid which will damage the pipework of the tester.
Figure 7. Adjusting a flow control valve
Figure 8. Tool placed into carriage
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6 TOOLS
6.1 For Elcometer 1720 Abrasion and Elcometer 1720 Abrasion & Washability Testers
Description Can be used with : Part Number
Tool 1. Wild Boar Brush
Wild Boar hair brush and stainless steel brush
holder
Total Weight : 250g (8.82oz)
DIN 53378-2:83 KT001720P003
Tool 2. Nylon Brush
Nylon bristle brush with stainless steel brush
holder and 177g (6.2oz) mass
Total Weight : 454 g (16.01oz)
ASTM D2486 KT001720P030
Tool 3. Sponge
Sponge with stainless steel holder and 337g
(11.9oz) mass
Total Weight : 508g (17.92oz)
ASTM D4213:92,
ASTM D4828 KT001720P005
Tool 4. Sponge
Sponge with stainless steel holder, 250g (8.8oz)
and 337g (11.9oz) mass
Total Weight : 750g (26.45oz)
ASTM D3450 KT001720P073
Tool 5. Sponge/Abrasive
Sponge with two integrated abrasive pads (top and
bottom, stainless steel holder and 76g (2.7oz)
mass
Total Weight : 232g (8.12oz)
ASTM D4213 (from
1996) KT001720P029
Tool 6. Abrasive
Abrasive pads (x5) with aluminium holder
Total Weight : 135g (4.76oz)
ISO 11998 KT001720P036
Tool 7. Universal Material Clamp
Stainless steel holder which allows the user to fix
their own test sample or abrasive material. Ideal for
abrasion and wear of labels, textiles, ink, etc.
KT001720P207
Tool 8. Linear Abrader ‘Crockmeter’
Orginally designed for testing colour fastness of
fabrics, this tool is ideal for testing abrasion on
both curved and flat surfaces and is supplied with a
removable stainless steel cylindrical rod (200g/
7oz), test felt, textile fixing ring and a set of
additional masses - 2 x 100g (3.5oz) 200g (7oz)
and 500g (17.6oz)
Total Weight (excluding masses): 200g (7.05oz)
ASTM F1319,
ISO 105-X12,
PSA D45 1010
KT001720P074
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Tool 9. Linear Abrader
For testing the resistance to abrasion of
automotive components, includes a felt disc of
10mm (0.4”) diameter and 10mm (0.4”) thick
working under a mass of 400g (14.1oz)
Total Weight : 400g (14.1oz)
GME 60269 KT001720P075
Tool 9A. Linear Abrader
As Tool 9 but with a 16mm (0.63”) diameter felt
wool disc working under a mass of 820g (28.9oz)
Total Weight : 820g (28.9oz)
ECCA T11 KT001720P075-1
Tool 9B. Linear Abrader
Felt holder for 16mm (0.63”) diameter felt wool disc
working under a mass of 900g (31.7oz)
Total Weight : 900g (31.7oz)
EN 13523-11 KT001720P075-2
Tool 10. Curved Sample Tool
Height adjustable with an ellbow joint for curved
samples, this tool is ideal for testing abrasion
resistance of both coatings and inks. Supplied with
felt disc, rod for masses, 50g (1.75oz) 100g
(3.5oz), 2 x 200g (7oz) and 2 x 500g (17.5oz) mass
EN 60730-1-A KT001720N003
Description Can be used with : Part Number
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7 ADJUSTING STROKE LENGTH OF THE CARRIAGE
On dispatch from the Elcometer factory your tester is set to the maximum stroke length (Abrasion
Tester and Washability tester = 300 mm)
To adjust the stroke length you will need the T-
bar tool and the hexagonal wrench supplied
with your tester (see “Access panel” on
page 5).
1. Switch off the tester and disconnect from
the mains power supply.
2. Remove the specimen holding frames.
3. Remove the sample tray and rubber mat.
4. Push the carriage to the left as far as it will
go.
5. Put the T-Bar tool through Hole A (Figure
9), this will lock the carriage in position.
6. Use the hexagonal wrench to loosen the two carriage securing bolts, via Hole B.
7. Push the carriage to the desired stroke
length using the scale plate and pointer as
a guide (Figure 10).
8. Re tighten the securing bolts via Hole B.
9. Remove the T-bar from Hole A.
10. Refit rubber matting, sample tray and
specimen holding frames.
Hole A
Hole B
Figure 9. Insert T-bar into hole A, then
useHexagonal wrench to loosenbolts
in hole B
Scale and
Pointer
Figure 10. Adjust stroke length using
scale and pointer as a guide
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8 SPECIAL TESTS
Your Elcometer 1720 Tester is a versatile machine which can be used for a wide variety of tests.
This section describes the operation of the machine for two special applications.
8.1 Testing Resistance of Markings
Tool 10 test the Resistance of Markings. Set
up to tool as follows:
1. Adjust the stroke length of the machine to
20 mm (0.78”) - see “Adjusting stroke
length of the carriage” on page 15.
2. Mount the tool on the carriage of the
tester (Figure 11) and tighten the two
screws (a).
3. Place specimen on the table (b) and fix in
place using a suitable method
(mechanical, adhesive, tape, etc.).
4. Adjust height of arm (c) and tighten knob
(d).
5. Place the cotton strip around the felt disc
(e) and secure the ends at the top using
the threaded rod (f).
6. Adjust the speed of the carriage to 60
cycles per minute (position 9 on the dial).
7. Place weightsbsupplied on threaded rod
to obtain required load.
8. For a wet test, immerse the cotton strip in the liquid before starting the test.
The tester and tool are now ready for testing.
8.2 EN 607301-1
For A.1.2 add 100g (total weight = 250g)
For A.1.3 add 600g (total weight = 750g)
Perform 12 cycles.
b. A set of six weights is supplied with Tool 10. These weights may be used to increase the load on the
specimen up to 1700 g (60 oz) in 50 g (1.8 oz) steps. The load on the specimen with no weights added is
150 g (5.3 oz).
Figure 11. Tool 10
b
e
f
dc
a
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8.3 Testing fabrics using the ‘Crockmeter’
Tool 8 (see page 14) is also known as the ‘Crockmeter’ and is specially designed for testing colour
fastness of fabrics. Use the illustrations and notes in this section as an aid to assembly of the parts
of your Crockmeter.
To set up the tool:
The Crockmeter tool is now ready for use.
9 MAINTENANCE
Clean and dry all tools after use. The Elcometer 1720 Tester is designed to give many years reliable
service under normal operating and storage conditions.
Every six months, or sooner when used intensively, carry out the following maintenance and
checks:
Place the felt pad (B)
on the end of the tool
body (A) and then
place the cloth (C) onto
the felt pad.
Slide the ring (D)
approximately 2 mm
over the cloth and the
end of the tool body.
Place the ring pushing
tool (E) over the ring
and continue to push
until the cloth is held
firmly by the ring.
Remove the ring
pushing tool.
The thin metal strip (large arrow)
prevents the carriage being marked
by the two screws (small arrows).
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9.1 Lubricate the carriage mechanism
The carriage mechanism bearings should be
lubricated with a lithium soap based grease
such as Molykote BR2 Plus.
To lubricate the carriage mechanism bearings
you will need a grease gun (not supplied) to
suit DIN 71412 grease nipples and the T-bar
tool and the hexagonal wrench supplied with
your tester (see “Access panel” on page 5).
1. Switch off the tester and disconnect from
the mains power supply.
2. Remove the specimen holding frames.
3. Remove the sample tray and rubber mat.
4. Push the carriage to the left as far as it will
go.
5. Put the T-Bar tool through Hole A (Figure 12), this will lock the carriage in position.
6. Use the hexagonal wrench to loosen the
two carriage securing bolts, via Hole B.
7. Push the carriage to 140 mm stroke
length position using the scale plate and
pointer as a guide (Figure 13).
8. Re tighten the securing bolts, leave the T-
Bar tool in place.
9. The grease points are visible through
holes marked on Figure 14.
10. Use a grease gun with a flexible hose to
lubricate the two guide rod bearings.
11. Remove the T-bar.
Hole A
Hole B
Figure 12. Insert T-bar into hole A,
then use Hexagonal wrench to loosen
bolts in hole B
Scale and
Pointer
Figure13.Adjust stroke lengthto140 mm
using scale and pointer as a guide
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