Crown CT44022 Original Instructions Manual page 14

Plumbing point precision test (see fig. 3, 8)
• Position the appliance at height of 1,5 m from the floor.
• Turn on the appliance as described above (laser
head self-levelling on, see fig. 3.1). Turn on horizontal
and vertical laser beams, mark the position of the
plumbing point (see fig. 8.1).
• Turn the appliance body to 90°, 180°, 270°, 360°,
and mark the position of the plumbing point in each
of the listed positions (see fig. 8.2). These marks
shall match or lie within a circle with a diameter not
exceeding 1 mm (see fig. 8.3).
Upper lines intersection precision test (see fig. 3, 9)
[CT44023, CT44024]
• Position the appliance onto an even surface 2,5 m
apart from the ceiling�
• Turn on the appliance as described above (laser
head self-levelling on, see fig. 3.1). Turn on all vertical
laser beams and mark the intersection point on the
ceiling (see fig. 9.1).
• Turn the appliance body to 90°, 180°, 270°, 360°,
and mark the intersection point in each of the listed
positions (see fig. 9.2). These marks shall match or lie
within a circle with a diameter not exceeding 0,5 mm
(see fig. 9.3).
Vertical laser beams perpendicularity test (see fig. 10)
[CT44023, CT44024]
• Position the appliance onto an even horizontal
surface approximately 2,5 m apart from the walls (see
fig. 10, showing the schematic top view).
• Turn on the appliance as described above (laser head
self-levelling on, see fig. 3.1). Turn on two perpendicular
vertical laser beams ("L1" and "L2") and mark their
position on the walls (lines "d1" and "d2") (see fig. 10.1).
• Turn the appliance body to 90° from the original
position, align laser beam "L1" with line "d2" and mark
the position of the beam "L2" with line "d3" (see fig. 10.2).
• Turn the appliance body to 180° from the original
position, align laser beam "L1" with line "d3" and mark
the position of the beam "L2" with line "d4" (see fig. 10.3).
• Turn the appliance body to 270° from the original
position, align laser beam "L1" with line "d3" and mark
the position of the beam "L2" with line "d5" (see fig. 10.4).
• Measure the distance ("x4") between the lines "d1"
and "d5" - it shall not exceed half of the variance value
(1 mm), specified in the technical data sheet.
General recommendation (see fig. 11)
• Before starting work ensure that all measurements
will be carried out under suitable conditions (see
section "Factors, influencing appliance precision").
• Place the appliance correctly with reference to
bubble level 8 indications� If necessary, adjust the
appliance position with adjustable legs 10� Negligible
horizontal misalignment can be compensated with the
laser head self-levelling system (not exceeding ±3°)�
• Put on the glasses 15 to improve laser beam visibili-
ty� Attention: glasses 15 are not protective glasses.
It is strictly prohibited to look at the laser beam
The manufacturer reserves the possibility to introduce changes.
through these glasses - it may cause eye retina
damage.
• Turn on the appliance as described above� If you
turn on the appliance with a laser head self-levelling
on and hear an acoustic signal, and the laser beams
blink, you have to re-position the appliance, otherwise
the measurement results will be incorrect�
• You can mark inclined lines when the laser head
self-levelling is off (see fig. 11). Attention! Do not
mark horizontal and vertical beams in this mode -
their position is incorrect.
• You can turn the appliance body manually (quickly)
of using swivel bolts 11 (slowly, but precisely)�
• After finishing work turn off the appliance as
described above (lock 9 shall be in the position as
shown in fig. 3.2 and laser beams must be off).
• It is recommended to put the appliance for long-term
storage and transportation into case 16� Ensure that
there are no moisture drops on the appliance elements
(if necessary, wipe with a soft cloth), after that put the
appliance into case 16�
Maintenance / preventive measures
Cleaning the appliance
• Keep the appliance clean� Do not use caustic sub-
stances or solvents�
• Emitter windows shall be cleaned with a soft cloth�
Do not use sharp objects or corrosive agents for this
purpose�
After-sales service and application service
Our after-sales service responds to your questions
concerning maintenance and repair of your product as
well as spare parts� Information about service centers,
parts diagrams and information about spare parts can
also be found under: www.crown-tools.com�
Transportation
• Categorically not to drop any mechanical impact on
the packaging during transport�
• When unloading / loading is not allowed to use any
kind of technology that works on the principle of clamp-
ing packaging�
Environmental protection
Recycle raw materials instead of dispos-
ing as waste.
Appliance, accessories and packaging
should be sorted for environment-friendly
recycling�
The plastic components are labelled for categorized
recycling�
These instructions are printed on recycled paper man-
ufactured without chlorine�
English
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