Lang LRR-2 User manual

Brand: Lang

Model: LRR-2

Type: User manual

Lang Manufacturing Company 6500 Merrill Creek Parkway Everett, WA 98203

Part # Phone: 425-349-2400 Fax: 425-349-2733

Installation, Operation, & Maintenance

Model: LRR-2,

Electric Lang Retarder Series

Lang Manufacturing Company 6500 Merrill Creek Parkway Everett, WA 98203

Part # Phone: 425-349-2400 Fax: 425-349-2733

THE INFORMATION IN THIS MANUAL IS CRUCIAL AND MUST BE RETAINED FOR

FUTURE REFERENCE. READ, UNDERSTAND AND FOLLOW THE INSTRUCTIONS AND

WARNINGS CONTAINED IN THIS MANUAL.

DANGER

POTENTIALLY HAZARDOUS SITUATION WHICH, IF NOT

AVOIDED, COULD RESULT IN DEATH.

WARNING

POTENTIALLY HAZARDOUS SITUATION WHICH, IF NOT

AVOIDED, COULD RESULT IN DEATH OR SERIOUS INJURY.

CAUTION

POTENTIALLY HAZARDOUS SITUATION WHICH, IF NOT

AVOIDED, MAY RESULT IN MINOR OR MODERATE INJURY.

NOTICE

Helpful operation and installation instructions and tips are

present.

FOR YOUR SAFETY

DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS

AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE.

WARNING: IMPROPER INSTALLATION, ADJUSTMENT, ALTERATION,

SERVICE OR MAINTENANCE CAN CAUSE PROPERTY DAMAGE, INJURY

OR DEATH. READ THE INSTALLATION, OPERATING AND MAINTENANCE

INSTRUCTIONS THOROUGHLY BEFORE INSTALLING OR SERVICING THIS

EQUIPMENT.

Model #: Purchased From:

Serial #:

Location:

Date Purchased:

Date Installed:

Purchase Order #:

For Service, Call:

TABLE OF CONTENTS

CHAPTER PAGE

TABLE OF CONTENTS ...................................................................................... 3

READ FIRST ........................................................................................................ 4

SAFETY PROCEEDURES................................................................................... 5

EQUIPMENT DESCRIPTION ............................................................................. 6

GENERAL DESCRIPTION ................................................................................. 7

GENERAL OPERATION..................................................................................... 8

GENERAL MAINTENANCE .............................................................................. 9

ASSEMBLY.......................................................................................................... 9

INSTALLATION.................................................................................................. 24

WIRING DIAGRAMS.......................................................................................... 25

PARTS LIST ......................................................................................................... 26

WARRANTY........................................................................................................ 29

ETL File E8138 Rev. A 2001

IMPORTANT READ FIRST IMPORTANT

WARNING

MOVING PARTS HAZARD. FOLLOW LOCKOUT PROCEDURES BEFORE

REMOVING AIR DUCT OR EVAPORATOR FAN GUARDS

WARNING

ELECTRICAL HAZARD BEHIND UPPER FRONT TRIM. FOLLOW LOCKOUT

PROCEDURES BEFORE SERVICING.

DANGER

DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS OR

LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE.

NOTICE

The Retard mode will operate without using the timer if continuous

retarding is desired.

NOTICE

Service on this or any other LANG equipment must be performed by

qualified personnel only. Consult your authorized service agency

directory or call the factory at 1-800-224-LANG (5264), or

WWW.LANGWORLD.COM for the service agency nearest you

NOTICE

A qualified & licensed refrigeration mechanic must perform connection,

evaluation & charging of refrigeration lines. The condenser unit, if

supplied, is recharged, but additional refrigerant may be required.

CAUTION

THE ADHESIVE WILL NOT RELEASE FOR A SECOND TRY.

NOTICE

For units needing more than one piece of trim to span one side, join the

two pieces by overlapping with the ceiling trim cap.

WARNING

TO REDUCE THE RISK OF FIRE, THE APPLIANCE IS TO BE MOUNTED ON

FLOORS OF NON-COMBUSTIBLE CONSTRUCTION WITH NON-

COMBUSTIBLE FLOORING AND SURFACE FINISH AND WITH NO

COMBUSTIBLE MATERIAL AGAINST THE UNDERSIDE THEREOF, OR ON

NON-COMBUSTIBLE SLABS OR ARCHES HAVING NO COMBUSTIBLE

MATERIAL AGAINST THE UNDERSIDE THEREOF. SUCH CONSTRUCTION

SHALL IN ALL CASES EXTEND NOT LESS THAN 12 INCHES BEYOND THE

EQUIPMENT ON ALL SIDES.

CAUTION

THIS APPLIANCE, WHEN INSTALLED, MUST BE ELECTRICALLY

GROUNDED IN ACCORDANCE WITH LOCAL CODES, OR IN THE

ABSENCE OF LOCAL CODES, WITH THE NATIONAL ELECTRICAL CODE,

ANSI/NFPA 70-1996.

CAUTION

FOR INSTALLATION IN CANADA THE INSTALLATION MUST BE IN

ACCORDANCE WITH CAN/CGA-B149.1&2 OF THE INSTALLATION CODE,

AND LOCAL CODES WHERE APPLICABLE. ALL ELECTRIC WIRING MUST

BE IN ACCORDANCE WITH THE CURRENT CANADIAN ELECTRICAL

CODE, C22.1 PART 1. GROUNDING THIS APPLIANCE MUST CONFORM

TO CANADIAN ELECTRICAL CODE, CSA C22.2.

WARNING

INSTALLATION OF THE UNIT MUST BE DONE BY PERSONNEL QUALIFIED

TO WORK WITH ELECTRICITY AND PLUMBING IMPROPER

INSTALLATION CAN CAUSE INJURY TO PERSONNEL AND /OR DAMAGE

TO EQUIMENT. UNIT MUST BE INSTALLED IN ACCORDANCE WITH ALL

APPLICAL CODES

ETL File E8138 Rev. A 2001

SAFETY PROCEEDURES

WARNING

MOVING PARTS HAZARD. FOLLOW LOCKOUT PROCEDURES BEFORE

REMOVING AIR DUCT OR EVAPORATOR FAN GUARDS

WARNING

ELECTRICAL HAZARD BEHIND UPPER FRONT TRIM. FOLLOW LOCKOUT

PROCEDURES BEFORE SERVICING.

Lockout Procedure

1. Announce lockout to other personnel.

2. Turn both heat and control power off at main panel.

3. Clear unit of all personnel.

4. Test lockout by turning power switch on and observing if control panel displays or fan(s) come on.

Check heater circuit with voltmeter.

5. Perform necessary repairs or tests.

6. Clear unit of personnel before restarting.

7. Turn power on at main panel.

8. Announce unit is “on” to other personnel.

Safety Precautions

The Manufacturer, Lang Manufacturing, hereby disclaims any and all responsibility for injury, damage,

loss or other claim that may occur to person or property from improper alteration, modification, addition,

operation, maintenance or service, whether it be mechanical, electrical, fuel, operator motor or otherwise,

which may occur from such improper alteration, modification, addition, operation, maintenance or service

to this piece of equipment.

Safety Considerations

Your Lang LRR Retarder is manufactured to rigid standards. This equipment is E.T.L. listed and meets

safety and sanitation standards.

The presence of safety equipment control and interlocks on an appliance and attendant components of

installation cannot in and of themselves, assure absolute safety of operation. Diligent, capable, well

trained operators and maintenance personnel, as well as proper programs of operation and maintenance,

are essential to the safe and reliable operation of this appliance.

A. The responsibility of the manufacturer

is to supply suitable, comprehensive instructions and

recommendations for the operation and maintenance of the appliance.

B. Trained qualified and factory-authorized personnel must perform all operation, maintenance and

repair of these appliances. It is the responsibility of the owner / operator

to ensure that this

happens.

C. A regular periodic program of cleaning, inspection and maintenance must be established and

comprehensive maintenance records maintained. It is the sole responsibility of the user

to establish,

schedule and enforce the frequency and scope of these programs in keeping with recommended

practice and with due consideration given to actual operating conditions.

D. The appliance must be operated within the limits, which will not exceed the working limits of

any component within the appliance as a whole.

ETL File E8138 Rev. A 2001

EQUIPMENT DESCRIPTION

Exterior

LRR2

• The Retarder exterior dimensions are 78.8” (200 cm) wide x 91.5” (232.5 cm) high x depth is dependent

upon model number [39.3”(100 cm) to 129.3” (328.5cm)]. The Top, Front, Back, and Sides are

constructed of stainless steel.

All Units

• Modular design allows for a wide variety of sizes.

• The retarder door is constructed of stainless steel and comes with both single and double doors.

Interior

LRR2

• The Retarder interior dimensions are 68.1” (173 cm) wide x 74.1” (188.25 cm) high x depth is dependent

upon model number [27.1”(68.8 cm) to 117.1” (297.4 cm)]. The Top, Front, Back, and Sides are

constructed of stainless steel.

All Units

• Floor level loading.

Cabinet

Rigid, formed stainless steel panels filled with polyurethane foam insulation re-joined with camlocks and

sealed with gaskets to form a strong, energy efficient, tight and sanitary enclosure.

Doors

The welded stainless steel doors are polyurethane foam-filled. Door bumpers on the inside protect the

finish.

Controls

• The microprocessor based digital controls are mounted for ease in the right-hand door. Power and light

switches are located above the left hand door.

• Digital read-out with solid-state temperature sensing and controls.

Evaporator(s)

Each Retarder retarder comes with one or two evaporators. These evaporators perform the task of cooling

the interior of the unit, while maintaining a relatively high level of humidity. The evaporators,

manufactured by Russell, consist of refrigeration coils, a thermal expansion valve, and a fan.

Condensing Unit

The condensing unit may or may not be provided with the system. Customers may choose to run off of a

remote refrigeration system. If used, the condensing unit consists of a compressor, a fan, a receiver, a line

drier and a solenoid valve. If the condensing unit is not used, the solenoid valve will still be provided to

control unit cooling.

ETL File E8138 Rev. A 2001

GENERAL DESCRIPTION

Theory of Operation

The Lang Retarder is a controlled atmosphere chamber. Temperature can be set independently to meet

your retarding needs. Air is circulated continuously to provide positive movement from bottom to top,

creating a uniform distribution cool air.

Retarder Theory

ETL File E8138 Rev. A 2001

GENERAL OPERATION

DANGER

DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS OR

LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE.

Controls

RETARDER OPERATION

1. Turn Retarder on.

2. Press “Temp.” button.

3. Set temperature to desired temperature (34°F-45°F) using the “Up” or “Down” buttons.

4. Press the “Timer” button.

5. Set time to desired time using the “Up” or “Down” buttons.

6. Place product in the Retarder.

7. Press “Start / Stop” button and timer will begin counting down.

8. When buzzer sounds, press stop button and remove product from Retarder.

9. To check actual temperature press “Temp.” button twice. Flashing display will indicate actual temp.

NOTICE

The Retard mode will operate without using the timer if continuous

retarding is desired.

ETL File E8138 Rev. A 2001

GENERAL MAINTENANCE

NOTICE

Service on this or any other LANG equipment must be performed by

qualified personnel only. Consult your authorized service agency directory

or call the factory at 1-800-224-LANG (5264), or WWW.LANGWORLD.COM

for the service agency nearest you

Every Day

Clean interior and exterior of retarder.

Every Six Months

Have factory authorized service personnel check Retarder for proper temperature readings, and evaporator drain.

As Needed

Clean interior and exterior walls and replace light bulb or any other components as needed.

Specifications

Temperature, humidity, and timer setting ranges:

Retard:

34°-45°F (1°-8°C)

Timers:

0-99 Hours and 0-59 Minutes

Power:

Varies depending on model and size (See data plate located on the underside of the valence

for the specific ratings or contact the factory for the information needed if the data plate is

not legible).

ASSEMBLY

Pre-Installation

Check the area where the Retarder is to be installed for the following:

No electrical junction boxes will be under the floor of the Retarder

Ceiling height above the Retarder should be sufficient to allow for installation. The minimum height

needed for installation is 95 inches.

Access is needed for an air-gap drain in any of the four corners.

Adequate space is needed in front of the Retarder to load and unload racks.

Local and national codes will require an electrical shut-off within a reasonable distance to the Retarder.

ETL File E8138 Rev. A 2001

ASSEMBLY CONT’D

Step 1

Install the floor (optional) and base channels:

• Locate the correct position of the Retarder. Clean the floor and adjacent wall space to remove any obstruction.

Note: If a floor is included with the Retarder, it may be desirable to remove any floor tile that may become loose

over time.

• Place the stainless steel floor on the floor and mark the edges with a non-permanent marker. Note: The stainless

steel floor has several holes along the door opening. Remove stainless steel floor. Apply several beads of floor

adhesive to the floor and spread with the trowel provided. Get a good continuous bead near the edge of the floor.

• Place the stainless steel floor back in position and gently walk the stainless steel floor down on the adhesive. Place a

few weights such as a toolbox or crating on the stainless steel floor to keep it in intimate contact with the adhesive

and the floor beneath.

• Place the wall base channels in position and align with the outside edge of the stainless steel floor, over the holes in

the stainless steel floor.

• Drill the floor through the wall base channels with a 3/8” diameter drill to accept the concrete floor anchors.

o Mark the drill bit at 1-1/2 inches from the end with tape. Drill until the mark is at the top of the stainless steel

floor. Do not drill too deep.

o Clean the holes of concrete dust.

o If the Retarder is mounted on stone or ceramic tile, extend the holes and the anchors into the concrete substrate.

• Install the anchors in the holes and set in place with the anchor-setting tool. (Note: One good solid blow is better

than many little taps.)

• Repeat this procedure at the front edge of the floor. Do not drill holes for the corner cove anchors (four additional

holes located inside the walls) at this time.

• Install the ¼-20 flat head screws in the anchors. Additional Screws have been provided in the event that a hole is

drilled too deep.

Illustration 1

ETL File E8138 Rev. A 2001

ASSEMBLY CONT’D

Illustration 1.5

ETL File E8138 Rev. A 2001

ASSEMBLY CONT’D

Step 2

• Assemble the walls:

• Place the left rear wall corner in the wall base channel.

Note: Remove the vinyl coating from the panels as you install them if there is no access to the surface later.

• Place one 20-inch wide wall panel next to the corner panel in the rear wall base channel. Remove paper

cover from wall gasket. Rotate the cam latches in the rear wall to the fully retracted position and then

fully engaged position to lock the corner and the panel together. Note: take extra care to align the top

edges of the panels and the inner face of the panels as you lock them together. The panels may tend to

move as you tighten the locks. Be sure the gasket material is in place and is not protruding.

• Install the right rear corner panel and the remainder of the panels, including the left and right jambs.

• Level the Retarder by installing shims under the wall panels at the corners. Additional shims may be

needed along the walls for larger Retarders. Be sure that the front jambs are vertical and parallel, and

that the top edge of both jambs are at the same height.

• Install the header between the jambs. Be sure the header is aligned with the tops of the jambs and the

front plane of the jambs. Note: this step is critical in getting the door(s) to hang straight.

Illustration 2

ETL File E8138 Rev. A 2001

ASSEMBLY CONT’D

Step 3

Assemble the ceiling:

• Place the rear-ceiling panel on top of the walls at the rear of the Retarder, with the stainless steel side

down. Be sure to remove the vinyl coating from the panel and paper from the gaskets.

• Place the 20-inch and 10-inch ceiling panels in place. Lock the panels together with the cam latches,

using care to keep the edges aligned.

• Place the front ceiling panel in place and lock to the adjacent panel.

• Square up the ceiling and align the side and rear panels with the edges of the ceiling panels.

• Install a ¼ by 3” self-drilling hex head screw. Repeat along the rear wall, keeping the walls and the

ceiling aligned.

Illustration 3

ETL File E8138 Rev. A 2001

ASSEMBLY CONT’D

Step 4

Install the doors:

• Install the door hinges to the doorjambs using ¼-20 flat head stainless steel screws provided. Note:

left and right hand hinges are not interchangeable.

• Install the hinges on the doors using ¼-20 flat head machine screws. Install the door bottom seal and

clamp strip using #10 by ¾ stainless steel sheet metal screws. On two door Retarders, install the

center lap strip in the same manner.

• Install the door closure hook on the door using #8 x 1 stainless steel sheet metal screws provided.

• Place the doors on the hinge pins and lower into place.

• Install the door handle using ¼-20 by 3”, round head stainless steel machine screws and ¼ flat

washers.

• Install the door closure mechanism(s) on the back of the header using #8 x 1 stainless steel sheet

metal screws provided. Close the door and check clearances and the door mechanism action. The

door should be pulled closed when the mechanism comes in contact with the hook.

• Close the doors and check the door fit. The doors should seal around the perimeter to the header and

the doorjambs. The doors should match at the top edge. To adjust, loosen the cam latches at the

header and shim the walls until the doors align. Tighten the cam latches.

Illustration 4

ETL File E8138 Rev. A 2001

ASSEMBLY CONT’D

Step 6

Install the Valence:

• Be sure that foam tape is on all surfaces of contact between the valence and the body.

• Place valence in place and install using ¼-20x5/8 screws.

• Install 10-32 screws at the bottom flange of the valance into the header panel, from inside the valance

(will be necessary to reach in from above).

• Insert toggle switch into valence and tighten from inside with the rubber caps. Light switch should be

on the right and power on the left.

• Place cover on top of valence and install using 10-32 x 3/8 screw (cover can be added after wiring is

complete).

Illustration 6

ETL File E8138 Rev. A 2001

ASSEMBLY CONT’D

Step 7 (Working Principle)

NOTICE

A qualified & licensed refrigeration mechanic must perform connection,

evaluation & charging of refrigeration lines. The condenser unit, if

supplied, is recharged, but additional refrigerant may be required.

ETL File E8138 Rev. A 2001

ASSEMBLY CONT’D

Step 8 (Mounting Evaporator & Condenser)

ETL File E8138 Rev. A 2001

ASSEMBLY CONT’D

Step 9

Plumbing:

• Place drain bumper over the drain tube and mark holes. Drill #21 and tap 10-32. Install with10-32

screws.

Illustration 9

ETL File E8138 Rev. A 2001

ASSEMBLY CONT’D

Illustration 9.1

ETL File E8138 Rev. A 2001

ASSEMBLY CONT’D

Step 10

CAUTION

THE ADHESIVE WILL NOT RELEASE FOR A SECOND TRY.

Install Bumpers:

• Determine locations that the bumpers need to go. Add bumpers to protect the remaining walls and

doors. Place about 40” off of the floor.

• Measure length that the bumper will have to span. Cut bumper track six inches less to account for the

bumper ends.

• Remove film from double back tape and place bumper in proper location. It is advised that a mark be

made in the location to ensure proper placement.

• Apply pressure for several minutes to ensure that bumper is fastened securely.

• Repeat this process for the end caps.

Illustration 10

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Lang LRR-2 User manual

Lang LRR-2 User manual

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