Operating Instructions - York Survey Supply Centre
Contents
1. Nothing else measures up Prospect House George Cayley Drive Clifton Moor York England YO30 4XE Tel 44 0 1904 692723 Fax 44 0 1904 690385 E Mail sales yorksurvey co uk YorkSurvey for secure online ordering of all our products Ref operat98 instructions 15 34755 qxp 05 01 15 Survey Supply Toughened Glass Indicator Code 34755 Operating Instructions I York Survey Supply Centre 2015 The Merlin TGi indicates whether or not glass has been toughened quickly easily and from one side only 1 On Off Button Press to activate indicator light When the button is released the light turns off automatically 2 Recharging Socket Plug in to battery charger IMPORTANT only use the charger supplied with your Merlin TGi 3 Viewing Window All readings are taken through this window Using the Merlin TGi Whatever type of glass is being tested ensure that the Merlin TGi is placed flat against the glass at eye level View ing the window slightly from the right the following will be observed when the on button is pressed Single Skin Two vertical lines Double Glazed Four vertical lines Example 1 Single Skin When single skin glass is tested two vertical lines will be visible in the viewing window Line A represents the surface on which the Merlin TGi is placed Line B represents the rear glass surface To determine whether the glass has been toughened slide the TGi ove2. shows again that the second pane has been toughened Alternatively if access to both sides of the double glazed unit is possible you may also take one reading from each side of the double glazed unit using only the results of lines A and B in each case Ref operat98 instructions 15 34755 qxp 05 01 15 Both lines A and B remain blue 4 Single skin toughened gt p A Line A remains blue line B changes colour ie 3 Double glazed both PP panes normal r Unes A B C and D remain blue Double glazed first _ P pane normal second pane toughened Bad Lines 4 B and C remain blue line D changes colour 5 Double glazed first 7 pane toughened second pane normal Line A remains blue line B changes colour lines C and D change colour together inot independently of each other G Double glazed both 5 panes toughened e ia lf Line A remains blue line B changes colour lines C and D change colour separately ie independently of each other The Merlin Lazer TGi will identify whether or not the glass being tested has been subject to a toughening process It does not guarantee that glass indicated as being toughened meets BSI standards Recharging the Merlin TGi Simply connect the TGi to the charger and leave overnight Normal charge time is 10 14 hours depending on battery condition To avoid the risk of damaging internal components only use the ch
3. arger supplied with your Merlin TGi Disconnect from mains when not in use For indoor use only do not expose to extremes of temperature or humidity Do not cover when in use Warning dangerous voltages no user serviceable parts Care and Maintenance e The Merlin TGi requires minimal maintenance There are no user serviceable parts e Do not expose the unit to extremes of temperature or humidity e Do not severely jolt the unit e The case may need cleaning occasionally and this is best done with a soft damp not wet cloth Do not use petroleum or solvent based cleaners e Do not attempt to remove or adjust the lighting circuitry York Survey Supply Centre 2015
4. r the surface while continuing to observe both lines in the viewing window e If both lines remain the same colour this indicates that the glass has not been toughened e If line B changes colour this indicates that the glass has been toughened Example 2 Double Glazed Unit When a double glazed unit is tested four vertical lines will be visible in the viewing window Line A represents the outer surface on which the Merlin TGi is placed Line B represents the inside surface of the first piece of glass Line C represents the inside surface of the second piece of glass Line D represents the outer surface of the second piece of glass furthest away from the TGi To determine whether the glass has been toughened slide the TGi over the surface while continuing to observe the four lines in the viewing window First Pane Lines A amp B e If both lines remain the same colour this indicates that the glass has not been toughened e If line B changes colour this indicates that the glass has been toughened Second Pane Lines C amp D e If both lines C and D stay the same this indicates that the second pane has not been toughened e If both lines change colour together this will also indicate that the second pane has not been toughened e If line C stays the same colour and line D changes colour this indicates that the second pane has been toughened e If line C changes colour but line D changes colour independently of line C this
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