Lavex 687FM3509LY User manual

INSTRUCTION
MANUAL
AIR CURTAIN
MODELS: #687FM3509LY
READ ENTIRE MANUAL BEFORE USE
Lavex Industrial • 2205 Old Philadelphia Pike • Lancaster, PA 17602
08/2022

INSTRUCTION MANUAL • 2
WARNING
TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS, OBSERVE
THE FOLLOWING:
A. Always disconnect, lock, and tag power source before installing or servicing. Failure to
disconnect power source can result in fire, shock, or serious injury.
B. Installation work and electrical wiring must be done by qualified person(s) in accor-
dance with all applicable codes and standards, including fire-rated construction.
C. When cutting or drilling into walls or ceilings, do not damage electrical wiring and
other hidden utilities.
D. To reduce the risk of fire or electric shock, do not use this fan with any solid-state
speed control device.
E. Repair and maintenance operations can only be performed by qualified personnel.
F. Verify and ensure the rated voltage and frequency (please refer to the rating label) of
the air curtain is in compliance with the main supply.
TABLE OF CONTENTS
PRODUCT INTRODUCTION ................................................................................... Page 3
INSTALLATION DIMENSIONS ................................................................................. Page 3
INSTALLATION CAUTIONS .................................................................................... Page 4
INSTALLATION INSTRUCTIONS ......................................................................... Page 5–6
TECHNICAL PARAMETERS ................................................................................... Page 6
WIRING DIAGRAM ................................................................................................ Page 7
OPERATING INSTRUCTIONS ................................................................................. Page 7
MAINTENANCE AND CLEANING ........................................................................... Page 8

INSTRUCTION MANUAL • 3
PRODUCT INTRODUCTION
Air curtains are widely installed at the entrances of supermarkets, theaters, meeting
rooms, hotels, oces, storerooms, etc. They can reduce penetration of insects, dust,
and unconditioned air into a conditioned space by forcing an air stream over the
entire entrance to create a comfortable environment.
INSTALLATION DIMENSIONS
MODEL A B C D E F G H I
687FM3509LY 35.43 --- 27.36 --- 2.91 3.94 8.46 9.06 4.84
NOTE: Measurements are subject to change without notice due to product development.
UNIT MEASUREMENTS (INCHES):
A G
I
H
B
C
D
E
F

INSTRUCTION MANUAL • 4
INSTALLATION CAUTIONS
Observe the following when installing air curtains:
1. Please install the unit on a firm supporting
structure. The mounting plate should be
mounted to at least one wall stud to avoid
shaking and to ensure its security as the
unit running may cause it to become
loose or shake and make noise.
4. When then entrance is wider than the unit,
it is recommended to install two or more
units. In this case, provide 1" to 1½" gaps
between the units.
6. Don’t install the unit at a place where it is
splashed by water, exposed to excessive
steam, explosive gas, or corrosive gas.
2. Please install the unit inside the room.
3. Install the unit no less than 91" from
the ground.
5. Don’t allow gaps between the unit and
the wall.

INSTRUCTION MANUAL • 5
INSTALLATION INSTRUCTIONS
A. Installing on a concrete wall:
B. Installing on a wooden wall:
1. Unscrew the mounting plate and remove
it from the back of the main body.
3. Tighten the nuts to secure the mounting
plate to the wall after cement has set.
Use the washers and nuts as shown.
1. Remove the mounting plate from the back
of the main body. Determine the mounting
location and fix the mounting plate to the
wooden wall with tapping screws.
2. Determine the mounting location with
the mounting plate. Fix the bolts in place
and pour cement into the bolt holes.
4. Mount the main body onto the mounting
plate as shown below and screw it back
to the mounting plate.
2. Mount the main body onto the mounting
plate as shown below and screw it back
to the mounting plate.

INSTRUCTION MANUAL • 6
C. Installing on a ceiling:
D. Installing above the ceiling:
1. Remove the mounting plate from the back
of the main body.
1. Fix the air curtain as per the procedure
for installing on a concrete wall.
3. Fix the mounting plate to the ceiling brackets
and tighten it securely as shown below.
The position of the mounting plate can be
adjusted in vertical direction according to
need, but the max distance is 4”.
2. Fix the ceiling brackets as shown below.
2. Then install piping as shown below.
4. Mount the main body onto the mounting
plate as shown below and screw it back
to the mounting plate.

INSTRUCTION MANUAL • 7
NOTE: Technical parameters are subject to change without notice due to product development.
TECHNICAL PARAMETERS
*Door Switch: The installation of magnetic door contact door switch is optional.
WIRING DIAGRAM
MODEL VOLT
(V)
FREQ
(Hz)
MAX INPUT
POWER
(W)
MAX AIR
VELOCITY
(m/s)
AIR VOLUME
(m3/h)
NOISE LEVEL
(dB) NET
WEIGHT
(LB)
HLHLHLHL
687FM3509LY 120 60 300 270 16 13 1100 900 52 49 28.66
OPERATING INSTRUCTIONS
1. Connect power to the unit.
2. Press the [on/o] button on the air curtain to turn it on at default high speed or turn it o.
Press the button [H] / [L] to select suitable speed, button [L] - Low speed, [H] - High Speed.
You can also press the [on/o\ button on the remote control to turn on the air curtain at
default high speed, press it again to switch the unit to low speed, and press again to turn
it o.
3. Adjust the air deflector to obtain optimum eect.

INSTRUCTION MANUAL • 8
MAINTENANCE AND CLEANING
WARNING
A. Any service is to be performed only by qualified personnel who are familiar with local
codes and regulations and are experienced with this type of product.
B. Always unplug or disconnect the appliance from the power supply before servicing or
cleaning the unit.
C. Never use petrol, benzene, thinners, or any other such chemicals to clean the unit.
D. Don’t allow water or any liquid to enter the motor.
1. Use the unit at the rated voltage and frequency indicated on the rating label.
2. Disconnect power source before unit installation or maintenance service.
3. Routine maintenance must be done every year.
4. Plastic parts should be cleaned with mild soap and water, thoroughly remove soap with a
clean, damp cloth.
5. Wipe the exterior surfaces of the fan with a moistened cloth with a solution of mild
detergent and water.
6. Dry the case with a soft, dry cloth before operating the unit.