Page 20 - QR CIMAR LASER SCREED

ITEM CONTROLS & DESCRIPTION
NO.
SIDE LOCK SWITCH:
8 The Side Lock Switch controls a key feature of the screed, it’s ability to drive over uneven
ground while keeping the screed head level and constantly referenced to the laser transmitter.
9 In order to accomplish this, the machine was designed with an upper frame and a lower frame,
10 which are connected by a pivot joint. That allows the lower frame to move up or down on
11 either side while the upper frame stays level. And because the screed head is attached only to
12 the upper frame, the screed head is isolated from the effect of bumps and obstacles on the
sub-floor. When the Side Lock Switch is set to the ON position, the upper and lower frames
are locked together and do not move independently. This is useful when transporting the
machine on site because, otherwise, the upper frame would tip from side to side, forcing the
operator to provide balance. When this switch is in the OFF position, the upper frame can
move from side to side independently of the lower frame. This may occasionally be useful
during placement operations, but the preferred approach while screeding is to leave this
setting in AUTO. When the Side Lock Switch is in the AUTO position, the upper and lower
frames are locked at all times, except when the screed is performing an actual screeding
pass. In other words, when the Propel Switch is set to REVERSE and the Operator Presence
Switch is depressed, the Side Lock will be released and the two frames will move from side to
side independently. With any other combination of control settings, the frames will be locked
together, which reduces strain on the operator and allows easier maneuvering between
passes on fresh concrete. Therefore, in most circumstances, the operator should leave this
switch set in the AUTO position.

LEVEL:
This bubble level indicates whether the machine is oriented correctly for screeding operations.
This is important, because if the machine is not properly leveled, then the attack angle of the
screed head will be wrong and poor screeding results will occur. During the course of a job,
the level should be checked at the beginning of each pass to insure that the machine and the
screed head are correctly aligned. Also, see machine level feature.

ENGINE STOP SWITCH:
Twisting the Engine Stop Switch clockwise allows the engine to be started. Pushing this
control down shuts off the engine and can be used during operations as an emergency “kill
switch”.

ENGINE THROTTLE CONTROL:
Pushing the Engine Throttle Control forward decreases the speed of the engine and pulling it
back increases the speed of the engine. During screeding operations, the throttle would
normally be pulled all the way back so that the engine was operating at full speed.

HEAD LIFT SWITCH:
The Head Lift Switch lifts the screed head up and down to level the machine. This switch
should also be used to lift the screed head up to its full height prior to maneuvering the
machine around the job site.

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