Lasermark LMH Series Manual

LASERMARK – LMH SERIES

AUTOMATIC SELF-LEVELING ROTARY LASER

LASER SAFETY

THE USE OF CONTROLS, ADJUSTMENTS, OR THE PERFOMANCE OF
PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN
HAZARDOUS RADIATION EXPOSURE.

DO NOT STARE INTO THE LASER BEAMS. DO NOT DISASSEMBLE THE
INSTRUMENT OR ATTEMPT TO PERFORM AMY INTERNAL SERVICING.
REPAIR AND SERVICING OF THIS LASER ARE TO BE PERFORMED ONLY
BY CST OR AUTHORIZED SERVICE CENTERS.

THIS LASER COMPLIES WITH ALL APPLICABLE PORTIONS OF TITLE 21 OF
THE CODE OF FEDERAL REGULATIONS SET BY THE DEPT. OF HEALTH,
EDUCATION, AND WELFARE, THE FOOD AND DRUG ADMINSTRATION,
THE CENTER OF DEVICES, AND THE BUREAU OF RADIOLOGICAL
HEALTH.

LMH SERIES OPERATION

3.1 LEVELING:

1. REMOVE THE LASERMARK LMH FROM ITS CASE. THE UNIT CAN
STAND ALONE ON A LEVEL, STURDY SURFACE OR BE SECURED
TO A 5/8”X11 SURVEYOR’S TRIPOD.

2. PRESS THE POWER BUTTON ONCE, AND ALLOW TIME (UP TO 60
SECONDS) FOR THE UNIT TO SELF LEVEL. THE POWER ON LED
(FIG. 1) AND THE LASER WILL BLINK DURING THIS PROCESS.
PLEASE NOTE, THE LASER HEAD MAY BEGIN TO ROTATE BEFORE
LEVELING IS COMPLETE. THE SELF-LEVELING SPEED IS
APPROXIMATELY ONE DEGREE PER 4 SECONDS.

3. AFTER SELF LEVELING, THE LASER HEAD WILL ROTATE AT 600
RPM (THE LMH 600 WILL ROTATE AT THE LAST SELECTED SPEED.
PRESS THE POWER BUTTON AGAIN TO TURN THE UNIT OFF).

(NOTE: FOR LMH-GR AND LMH 600 MODELS, SEE SECTION 4.3.2
(PAGE11)

3.2 RE-LEVELING:
IF THE UNIT IS BUMPED OR MOVED, THE UNIT WILL

AUTOMATICALLY ATTEMPT TO RE-LEVEL ITSELF. THE POWER ON
LED AND THE LASER WILL BLINK DURING THIS PROCESS UNTIL

THE UNIT IS LEVEL ONCE AGAIN. THE LASER HEAD WILL RESUME
ROTATION.

ON THE JOB SITE, IT MAY BE NECESSARY TO PREVENT RE­LEVELING IN ORDER TO PREVENT INACCURATE MEASUREMENTS
BY THE OPERATOR. THE LMH’S ANTI-DRIFT SYSTEM (SECTION 3.3)
IS USED FOR THIS PURPOSE.

3.2.1 AXIS DRIVE ERROR:
IF THE LHM IS SET UP OR TIPPED BEYOND ITS SELF-LEVELING

RANGE OF 5 DEGREES PLUS OR MINUS, THE LASER HEAD WILL
INTIALLY ATTEMPT TO LEVEL; HOWEVER WHEN THE SELF­LEVELING LIMIT IS REACHED, THE LEDS WILL BLINK, INDICATING
AN AXIS DRIVE ERROR (FIG. 2). TURN THE LMH OFF, MOVE THE
UNIT INTO A MORE LEVEL POSITION, THEN TURN THE UNIT ON
AGAIN.

3.3 ANTI-DRIFT SYSTEM (ADS): (LMH, LMH-C, ANDLMH-GR ONLY):
BY DEFAULT THE ADS FEATURE IS ON. THE DEFAULT SETTING OF

THE ADS FUNCTION MAY BE SET TO ON OR OFF. WHEN THE UNIT
IS OFF, PRESS AND HOLD THE MANUAL MODE (FOR LMH-GR,
DOWN ARROW BUTTON) AND THEN PRESS THE POWER BUTTON.
ONCE THE UNIT IS ON, TURN THE UNIT OFF FOR 15 SECONDS AND
THEN BACK ON. ADS WILL NOT BE THE DEFAULT WHEN UNIT IS
TURNED ON. TO MAKE THE UNIT RETURN TO ADS AS DEFAULT,
REPEAT THESE INSTRUCTIONS. WHEN THE LMH SERIES LASER IS
FIRST TURNED ON, THE ADS FEATURE DOES NOT BEGIN
RECORDING FOR 1 MINUTE. THIS ALLOWS THE INSTRUMENT TO
BE SET UP AND ADJUSTED. IF AFTER ONE MINUTE, THE UNIT IS
DISTURBED AND THE ADS LIGHT IS FLASHING IT IS NECESSARY
TO CHECK ANY BENCH MARKS THAT HAVE BEEN MADE AND

ENSURE THE PROPER “HI” (HEIGHT OF INSTRUMENT). AFTER THE

FLASHING ADS HAS BEEN RESET, BY PRESSING THE ADS BUTTON
ONE TIME, YOU WILL HAVE AN ADDITIONAL MINUTE TO SET AND
CHECK YOUR MEASUREMENTS. TO TURN ADS OFF PRESS THE
ADS BUTTON ONCE. THIS WILL PUT THE UNIT INTO NORMAL AUTO
SELF-LEVELING MODE.

3.4 GRADE MODE: SINGLE AXIS GRADE (LMH-GR AND LMH600NLY)
THE SINGLE GRADE FUNCTION IS IDEAL FOR GENERAL SITE

GRADING, CHECKING EXCAVATION, LANDSCAPING AND
DRAINAGE, AND MORE.

MANUAL GRADE MODE CAN BE ACTIVATED BY PLACING THE
AUTOMATIC LEVELING SENSOR IN THE OFF POSITION. PRESSING
THE MANUAL GRADE BUTTON WILL DEACTIVATE THE SENSOR.

THE SELECTED GRADE CAN BE AS MUCH AS A POSITIVE OR
NEGATIVE 10%, AND SET IN REFERENCE TO THE Y-AXIS OF THE
UNIT.

OPERATOR CAN USE ONE OF TWO METHODS TO GENERATE
SINGLE-AXIS GRADE (FIG. 4). METHOD 1: PLACE THE UNIT IN THE
MIDDLE OF THE TWO POINTS (A AND B) TO GET A HIGHER
DISTANCE. METHOD 2: PLACE THE UNIT AT ONE POINT (A) AND
LOCATE THE OTHER POINT (B).

ON THE LMH600, YOU MAY FIRST PRESS VAIRABLE ROTATION
BUTTON AND SET THE LASER TO THE DESIRED ROTATION SPEED.
PRESS THE “MANUAL GRADE” BUTTON TO ACTIVATE MANUAL
GRADE OPTION. PRESS THE ARROW BUTTONS (FIG.5B) TO
ADJUST TO YOUR DESIRED GRADE.

THE UNIT WILL REACT TO “MORE” AND “LESS” INPUT (FIG. 5A AND
5B). ALLOW THE UNIT AMPLE TIME TO REACT TO THE INPUT

PROVIDED, BETWEEN GRADE SETUPS OR CHANGES.

3.5 GRADE MODE: DUAL AXIS SLOPE (LMH600 ONLY)
THE DUAL GRADE FUNCTION ALLOWS MORE SPECIALIZED SITE

PREPARATIONS SUCH AS ROAD GRADING, AIRPORT JOBS
(GRADING AND PAVING), IRRIGATION, TRENCHING, LANDFILLS,
SLOPES AND EMBANKMENTS, AND PIPELAYING.

TO ENTER A DUAL GRADE SETTING, PRESS THE MANUAL MODE
(GRADE) BUTTON. THEN PRESS THE ARROW BUTTONS TO
ADJUST GRADE (FIG.5B). ALLOW THE UNIT AMPLE TIME TO REACT
TO THE BUTTON BEING PRESSED. REFER TO EXAMPLES IN FIG. 6
TO PREDICT YOUR RESULTS.

LMH SERIES APPLICATIONS

USE YOUR LASERMARK LMH SERIES AUTOMATIC SELF- LEVELING
LASER FOR THESE AND MANY OTHER PROJECTS:

OUTDOOR GENERAL CONSTRUCTION APPLICATIONS AND SITE
PREPARATION, GRADING AND EXCAVATING, BATTERBOARDS AND
FOUNDATIONS, MASONRY WORK, SETTING CONCRETE FORMS,