Larson Electronics LM Multi Stage Series User manual

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LM-EW Series Light Masts Larson Electronics, LLC. 1
LM Multi Stage Series
Read instructions carefully before attempting to install or operate the mast.
Failure to comply with instructions and guidelines could result in serious or
fatal injury, as well as void any warranty. Retain these instructions for future
reference.
1. Position light mast in the desired
location. Ensure that the unit is
completely level and anchor the light
mast using all six (6) mounting holes
located on the base. This will require
six (6) 9/16" bolts. When picking a
location, ensure the mast is free and
clear from any overhead obstructions.
2. (If applicable) Attach equipment to
mast head. Use appropriate
measures for securing attached
devices. Drill thru-holes as necessary.
Do not exceed weight capacity
listed on nameplate!
3. Install mast head. See mast head
installation steps.
MAST HEAD INSTALLATION:
With the mast folded over, install light
head. Use additional help with heavy
equipment installed.
4. Remove the retaining pin from the
base of the mast and set aside.
5. Use the "FOLD DOWN/FOLD UP"
switch turned to the FOLD UP position
to raise the mast to the upright position.
When fully upright, the mast will depress
the sensor switch found at the base.
This will allow the mast to be raised.
6. Replace thepin removed earlier!
This retaining pin will prevent the
mast from falling over should the
winch cable fail.
7. Mast must be level! Use a bubble
level to level the mast before
extending!
8. Use the "RETRACT/EXTEND" switch
on the control panel turned to the
EXTEND position to raise the mast to
desired height. Winch will stop when
mast reaches max height.
Do not force the winch any further
passed its stopping point!
WARNING: Ensure the mast retaining pin
is installed at the base of the mast before
elevating!
MAST HEAD INSTALLATION:
See Light Head Installation Section.
4. Use the "RETRACT/EXTEND" switch
on the control panel turned to the
EXTEND position to raise the mast to
desired height. Winch will stop when
mast reaches max height.
LIGHT MAST OPERATION
EXTEND MAST
FOLD OVER MODELS
NON-FOLD OVER MODELS
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LM-EW Series Light Masts Larson Electronics, LLC. 2
1. To lower the mast, use the same
switch in the RETRACT position until
mast reaches desired height or
bottoms out. Do not leave excessive
slack on the winch cable.
WARNING: Power cables can become pinched or tangled around light
mast while lowering or rotating. Take caution in keeping cables clear.
2. Once mast is lowered, remove the
retaining pin from the base of the
mast and set aside. This pin must be
removed before folding the mast!
3. Use the "FOLD DOWN/FOLD UP"
switch turned to the FOLD DOWN
position to fold the mast back to the
horizontal position. Do not leave
excessive slack on the winch cable.
4. Replace the retaining pin on the base
of the mast removed in Step 2.
WARNING: Ensure mounted equipment
does not exceed weight capacity listed on nameplate!
LOWER MAST
FOLD OVER MODELS
FOLD OVER MODELSFOLD OVER MODELS
Some models of Larson Electronics' masts are so lightweight that they
do not have a spring to assist in folding over. These are known as push
over models.
Push over models must be manually folded over with and without a
headload.
FOLD OVER MODELSFOLD OVER MODELS
PUSH OVER MODELS
In order for the spring on fold over models to activate, a headload of at
least 15 lb is required.
If the spring does not activate due to insufficient headload:
1. Unwind the fold over winch two times.
2. Apply pressure to help the mast fold over.
3. Resume cranking the winch to lower the mast.
FOLD OVER MODELSFOLD OVER MODELS
FOLD OVER MODELS - TROUBLESHOOTING
The mast can be rotated while lowered or elevated.
1. Loosen bolt(s) located toward
center collar of light mast.
2. Rotate mast to desired angle.
3. Tighten bolt(s) in order to secure
mast in place.
When using power cables, minimize full 360° rotation to prevent tangling
cord around light mast. Ensure cables are not in the way or tangled when
lowering mast!
ROTATING MAST (If applicable)

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LM-EW Series Light Masts Larson Electronics, LLC. 3
The light mast ships with the light head / T-head removed to prevent
damage during transport. Follow the steps below for installing or removing
light head.
1. Locate light head. Color, style, and mounted lights will vary.
2. The light head is equipped with a T-
Handle / Hand Screw.
3. Make sure the hand screw is loose, to
allow the head to slide over the top
stage of the mast.
MAST HEAD INSTALLATION
COLOR MAY VARY
4. Using a pair of slings, wrap both slings around the light head in between
the lights on both sides.
5. Attach the slings to a forklift or other lifting device.
6. With 2 people holding the light head steady, slowly raise the light head
above the mast.
7. A ladder will need to be placed on both sides of the mast, in order for 2
people to guide the head in to place.
8. Once the light head is on top of the light mast, tighten the T-Handle to
ensure the light head is safely secured to the top of the mast.
9. Make the electrical connections for the
lights. Repeat this process in reverse
order for removing the light head.
10. Proceed to the OPERATION MANUAL for operating the unit.
Slings are recommended for installing heavy loads and to ensure operator
safety. Should other methods be used, Larson Electronics shall not be held
responsible for damages or personal injuries.

ver.0818-1
LM-EW Series Light Masts Larson Electronics, LLC. 3
9419 US-HWY 175
Kemp, TX75143 USA
P: 800-369-6671 | INTL: 903-498-3363 F: 903-498-3364
[email protected]
www.larsonelectronics.com
NOTES