Qmark Low-Profile User Manual [en, es, fr]

LP Series

”

7
178 mm

Low Profile Air Curtains

Refer to Specifications

imension “A”, page 2

D

Note – All dimensions are the same for all low-profile
series air curtains. Model number indicates width of
unit. (Example LP4800 indicates 48” wide unit.)

7

8

/8”

223 mm

Installation, Operation & Maintenance Instructions

GENERAL

Marley air curtains produce a wall of continuously flowing air that acts as a thermal barrier against outside air and flying insects.
These air curtains maintain interior conditioned temperature and prevent heated or cooled air from escaping through open door­ways. They reduce humidity and loss of cold air when used over freezer and cooler doors. High traffic area doors can be left open,
eliminating wear and nuisance of opening and closing automatic and manual doors used over service entrances, access doors, etc.
Air curtains provide protection against insects, dust, odor, fumes and other contaminants.

WARNING

Read Carefully - These instructions are written to help you

prevent difficulties that might arise during installation of the unit.
Studying the instructions first may save you considerable time
and money later. Observe the following procedures, and cut
your installation time to a minimum.

CAUTION - TO REDUCE RISK OF FIRE AND ELECTRIC
SHOCK OBSERVE THE FOLLOWING:

1. Use this unit only in the manner intended by the manufac­turer. If you have questions contact the manufacturer.

2. Before servicing or cleaning the unit, switch power off at
service panel and lock service panel to prevent power from
being switched on accidentally.

3. Installation work and electrical wiring must be done by qual­ified persons in accordance with all applicable codes and
standards, including fire rated construction.

4. When cutting or drilling into wall or ceiling, do not damage
electrical wiring or other hidden utilities.

5. Make certain that the power source conforms to the electri­cal requirements of the unit (check nameplate). Disconnect
power before installing or servicing. Lock it in the open posi­tion and tag it to prevent unexpected application of power.
Failure to do so could result in fatal electric shock.

6. All wiring should be done by a qualified electrician, using
copper wire only and in accordance with the National
Electric Code (NEC), all applicable local codes, and ordi­nances, and all sections of this manual. Any variance voids
the warranty and may create unsafe conditions.

7. Special attention must be given to any grounding informa­tion pertaining to this product. To prevent the risk of elec­trocution, the unit must be securely and accurately
grounded. This should be accomplished by connecting a
grounded conductor between the service panel and the
grounding lug provided in the wiring compartment.
To ensure proper ground, the grounding means must be
tested by a qualified electrician.

8. Do not insert fingers or foreign objects into the air curtain.
Do not block or tamper with in any matter while in operation.
Do not touch it while in operation or just after it has been
turned off, as some parts may be hot enough to cause
injury.

9 This product must NOT be used in potentially dangerous

areas such as hazardous locations, flammable, explosive,
chemical-laden, or wet atmospheres are present.

10. To reduce the risk of fire or electric shock, do not use this
air curtain with any solid state speed control devices.

!

SAVE THESE INSTRUCTIONS

Specifications

AIR DELIVERY

Dim. Avg. FPM CFM Total Max

Model No. “A” at Nozzle at Nozzle HP Amps Volts

LP36001115 37.0 1800/1350 1295/971 1/15 1.3A 120
LP42001110 42.0 1800/1350 1470/1103 1/10 1.6A 120
LP48001108 48.0 1800/1350 1681/1260 1/8 2.1A 120
LP60001108 60.0 1800/1350 2102/1576 1/8 2.1A 120
LP36001208 37.0 1800/1350 1295/971 1/8 0.7A 240
LP42001208 42.0 1800/1350 1470/1103 1/8 0.7A 240
LP48001206 48.0 1800/1350 1681/1260 1/6 1.0A 240
LP60001206 60.0 1800/1350 2102/1576 1/6 1.0A 240

DO NOT DEPEND UPON A THERMOSTAT OR OTHER
SWITCH AS THE SOLE MEANS OF DISCONNECTING
POWER WHEN INSTALLING OR SERVICING THE UNIT.
ALWAYS DISCONNECT AND LOCK OUT POWER AT THE
MAIN CIRCUIT BREAKER AS DESCRIBED ABOVE.
FAILURE TO DO SO COULD RESULT IN FATAL ELECTRIC
SHOCK.

Mounting bracket

Mounting holes
(10 total)

Figure 1

2. Mount air curtain cabinet assembly by simply “hanging” unit
onto unit mounting bracket by aligning vertical tabs with air
curtain cabinet assembly slots (Figure 2). Secure air curtain
to mounting bracket by four (4) phillips screws.

THIS PRODUCT MUST NOT BE USED IN POTENTIALLY
DANGEROUS AREAS SUCH AS HAZARDOUS LOCATIONS,
FLAMMABLE, EXPLOSIVE, CHEMICAL-LADEN, OR WET
ATMOSPHERES ARE PRESENT.

TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO
NOT USE THIS AIR CURTAIN WITH ANY SOLID STATE
SPEED CONTROL DEVICES.

UNPACKING

1. With packaged unit on floor, carton arrows should point
upward.

2. Carefully remove staples from top of carton and fold back
sides.

3. Carefully remove cabinet by lifting out unit and place on work
surface.

DO NOT ATTEMPT TO LIFT THIS AIR CURTAIN BY ITS
LOUVER OR DAMAGE MAY RESULT.

4. Remove four (4) phillips screws securing mounting bracket
and remove unit mounting bracket.

Screw holes (4)

Fit tab of mounting bracket into
slot on back of unit as shown

Figure 2

ELECTRICAL CONNECTIONS

ALL AIR CURTAINS SHOULD BE INSTALLED BY QUALIFIED
PERSONNEL.

Cord Connected

1. Connect power per nameplate to correct power supply.

2. Install all wiring, protection, and grounding in accordance
with the National Electrical Code (NEC) and all requirements.

THIS FAN HAS AN INTERNAL SELF-RESETTING THERMAL
OVERLOAD PROTECTOR. ALWAYS DISCONNECT FROM
POWER SUPPLY BEFORE SERVICING.

INSTALLATION

1. Determine mounting location utilizing unit mounting bracket
and attach unit mounting bracket using appropriate mounting
hardware (not included).

IMPORTANT: The hardware and the supporting structure must
be capable of supporting a minimum 150 lb. load.

NOTE: All installation should be done to meet local building
codes.

3. Unit is ready for operation.

4. Confirm unit is operating within all electrical and performance
specifications.

NOTE: Air curtain has high/low selector switch that is factory
wired

2

MAKE SURE AMP RATING OF ANY ON/OFF SWITCH
EXCEEDS NAMEPLATE AMP RATING OF MOTOR.

Hard Wire Connection

NOTE: Unit is factory wired for cord connection and may be field

wired for hard wire connection.

1. Remove knockout from back of unit cabinet (see Figure 3).

Knockout

Figure 3

2. Remove front inlet grille from unit.
3 Cut plug from end of supply cord and remove strain relief

bushing.

OPERATION

1. After power has been connected to unit, fans will start in
either preset (high/low) speed selection.

2. Air velocity is controlled by selection of high or low speed
indicator. This feature allows the setting of air velocity to
individual desired performance and energy efficiency.

3. Air direction at outlet can be controlled by adjustable vanes
at nozzle which compensates for possible draft conditions.

IMPORTANT: In freezer applications, unit is always mounted on
outside (warm side) of freezer or cooler.

NOTE: Cold air will try to escape near floor level. Warm air will
try to penetrate curtain near top of doorway. Air flow can be
controlled by direction of nozzle louvers and by high/low set­tings.

NOTE: For best operation, the interior space must have an
equalized pressure to the exterior space.

MAINTANCE

TO REDUCE THE RISK FOR ELECTRIC SHOCK ALWAYS
DISCONNECT AND LOCK OUT POWER SUPPLY BEFORE
SERVICING.

Strain relief bushing

Figure 4

4. Route cut cord end into air curtain cabinet and out through
knockout hole in back. Replace strain relief bushing.

5. Route hard field wire into center of mounting bracket.

6. Connect power per nameplate to correct power supply in
space between air curtain cabinet and mounting bracket.
Use adequate size wire for all branch and feeder runs.

Cabinet wiring

Cord

Field supply wiring

Lubrication

Sleeve bearings are permanently lubricated and require no
further lubrication.

Cleaning

1. The air curtain cabinet may be wiped off with a damp cloth.
Do not allow motor to get wet. Do not use solvents or harsh
detergents.

NOTE: Keep air intake louvers clear of dirt and dust
accumulation which could affect performance.

2. Check blower wheels for accumulated dirt twice a year and
clean.

Figure 5

7. Install all wiring, protection, and grounding in accordance
with the National Electrical Code (NEC) and all requirements.

8. Replace front grille.

9. Unit is ready for operation.

10.Confirm unit is operating within all electrical and performance
specifications.

3

All products manufactured by Marley Engineered Products are warranted against defects in workmanship and materials for one year from date of installation, except

LIMITED WARRANTY

heating elements which are warranted against defects in workmanship and materials for five years from date of installation. This warranty does not apply to damage from
accident, misuse, or alteration; nor where the connected voltage is more than 5% above the nameplate voltage; nor to equipment improperly installed or wired or
maintained in violation of the product’s installation instructions. All claims for warranty work must be accompanied by proof of the date of installation.

The customer shall be responsible for all costs incurred in the removal or reinstallation of products, including labor costs, and shipping costs incurred to return products
to Marley Engineered Products Service Center. Within the limitations of this warranty, inoperative units should be returned to the nearest Marley authorized service cen­ter or the Marley Engineered Products Service Center, and we will repair or replace, at our option, at no charge to you with return freight paid by Marley. It is agreed that
such repair or replacement is the exclusive remedy available from Marley Engineered Products.

THE ABOVE WARRANTIES ARE IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED, AND ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE WHICH EXCEED THE AFORESAID EXPRESSED WARRANTIES ARE HEREBY DISCLAIMED AND EXCLUDED FROM
THIS AGREEMENT. MARLEY ENGINEERED PRODUCTS SHALL NOT BE LIABLE FOR CONSEQUENTIAL DAMAGES ARISING WITH RESPECT TO THE
PRODUCT, WHETHER BASED UPON NEGLIGENCE, TORT, STRICT LIABILITY, OR CONTRACT.

Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above exclusion or limitation may not apply to you. This warranty gives
you specific legal rights, and you may also have other rights which vary from state to state.

For the address of your nearest authorized service center, contact Marley Engineered Products in Bennettsville, SC, at 1-800-642-4328. Merchandise returned to the fac­tory must be accompanied by a return authorization and service identification tag, both available from Marley Engineered Products. When requesting return authorization,
include all catalog numbers shown on the products.

HOW TO OBTAIN WARRANTY SERVICE AND
WARRANTY PARTS PLUS GENERAL INFORMATION

1. Warranty Service or Parts 1-800-642-4328

2. Purchase Replacement Parts 1-800-654-3545

3. General Product Information www.marleymep.com

Note: When obtaining service always have the following:

1. Model number of the product

2. Date of manufacture

3. Part number or description

470 Beauty Spot Rd. East
Bennettsville, SC 29512 USA

Part No. 5200-2835-001

ECR39232

09/11