Carrier TYLER Advantage Series Supplement

Installation & Service
Manual
NLBR, NLBN, NLBS
This manual has been designed to be used in conjunction with the
General (UL/NSF) Installation & Service Manual.
Save the Instructions in Both Manuals for Future Reference!!
This merchandiser conforms to the American National Standard Institute & NSF International Health and Sanitation standard ANSI/NSF - 7 2003.
PRINTED IN Specifications subject to REPLACES ISSUE PART
IN U.S.A. change without notice. EDITION 11/05 DATE 4/07 NO. 9037159 REV. B
Tyler Refrigeration * Niles, Michigan 49120
LIFT FRONT CURVED GLASS BAKERY MERCHANDISERS
Medium Temperature and Non-Refrigerated Bakery Display Cases

CONTENTS
NLBR, NLBN, NLBS
Page 2 April, 2007
Page
Specifications
NLBR/NLBN Specification Sheets . . . . . . . . . . . . . . . . . . . . . . . . . 4
NLBS Specification Sheets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Line Sizing Requirements . . . . . (See General-UL/NSF I&S Manual)
Pre-Installation Responsibilities . . . . . (See General-UL/NSF I&S Manual)
Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Carpentry Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Case Line-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Lift Glass Leveling Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Rear Rail Cover & Close-off Installation (NLBR/NLBN) . . . . . . . . . . 10
Trim & NSF Thermometer Installation . . . . . . . . . . . . . . . . . . . . . . 11
Plumbing Procedures . . . . . . . . (See General-UL/NSF I&S Manual)
Refrigeration Procedures . . . . . (See General-UL/NSF I&S Manual)
Self-Contained Circuit (NLBS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Electrical Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Electrical Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Defrost Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Defrost Control Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Installation Procedure Check Lists (See Gen.-UL/NSF I&S Manual)
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
NLBR/NLBN Domestic & Export (50Hz) Case Circuits . . . . . . . . . . 13
NLBS Domestic & Export (50Hz) Case Circuits . . . . . . . . . . . . . . . 14
Cleaning and Sanitation
Component Removal & Installation Instructions for Cleaning .15
Shelves and Shelf Brackets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Bottom Trays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Front Air Duct . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Mullion Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Front Lower Cladding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Front Upper Cladding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Cleaning Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Stainless Steel Cleaning Methods . . . . . . . . . . . . . . . . . . . . . . . 16

Installation & Service Manual NLBR, NLBN, NLBS
November, 2005 Page 3
The following Medium Temperature (Remote & Self-Contained) and Non-Refrigerated Lift Front
Glass Bakery Merchandiser models are covered in this manual:
MODEL DESCRIPTION
NLBR 59” & 77” LIFT FRONT GLASS REMOTE OPERATED BAKERY MERCHANDISERS
NLBN 59” & 77” LIFT FRONT GLASS NON-REFRIGERATED BAKERY MERCHANDISERS
NLBS 59” & 77” LIFT FRONT GLASS SELF-CONTAINED BAKERY MERCHANDISERS
Page
General Information
Rear Sliding Door Removal and Installation . . . . . . . . . . . . . . . 18
Service Instructions
Preventive Maintenance . . . . . . (See General-UL/NSF I&S Manual)
Troubleshooting Self-Contained Units (NLBS) . . . . . . . . . . . . . . 19
Light Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Ballast and Lighting Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Color Band, Anti-Sweat, Bumper and
Bumper Retainer Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Fan Blade and Motor Replacement (See Gen.-UL/NSF I&S Manual)
Lift Glass Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Lift Glass Cylinder Replacement . . . . . . . . . . . . . . . . . . . . . . . . . 22
Lift Glass End Seal Replacement . . . . . . . . . . . . . . . . . . . . . . . . . 23
Parts Information
Operational Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Cladding and Trim Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
TYLER Warranty . . . . . . . . . . . . . . . . . (See General-UL/NSF I&S Manual)

NLBR, NLBN, NLBS
Page 4 April, 2008
SPECIFICATIONS
NLBR Lift Front Curved Glass Remote Bakery Merchandisers
NLBN Lift Front Curved Glass Non-Refrigerated Bakery Merchandisers

Installation & Service Manual NLBR, NLBN, NLBS
April, 2008 Page 5

NLBR, NLBN, NLBS
Page 6 April, 2008
NLBS Lift Front Curved Glass Bakery Merchandisers (Self Contained)

Installation & Service Manual NLBR, NLBN, NLBS
April, 2008 Page 7

Carpentry Procedures
Case Line-Up
Before starting the case line-up, review the
store layout floorplans and survey the areas
where case line-ups are going to be installed.
WARNING
These cases are very heavy and require
two or more people to move and/or posi-
tion them. Improper handling of these
cases could result in personal injury.
1. Snap chalk lines where the front and rear
legs or base rails of the case are to be
located for the entire line-up.
NOTE
Front and rear edges of legs and/or base
rails should always be used to line-up
cases. Cases with legs have built-in
leveling adjustment capabilities. Cases
with base rails use 6” shims that allow
adjoining ends of cases to be shimmed
together.
2. Cases with legs are shipped on skids.
Using a proper lifting device, move case
on skid to approximate installation loca-
tion. Remove case from skid and install
legs to base. Make sure all legs are
completely threaded into the base to
properly secure them. Thread out bottom
leg insert, up to 1 1/2”, to level the case.
INSTALLATION PROCEDURES
WARNING
The raised front glass projects in front of
the case and could cause personal injury
to workers, operators and/or customers.
• Do not remove orange warning tags
from front edge of lift glass.
• Do not leave lift glass raised and
unattended.
• Know where the front edge of the
raised glass is when working near it.
This case is designed so the front glass can
be raised for cleaning and merchandising
only. It is recommended that any cleaning or
merchandising be done when the store is
closed. If this is not possible, it should be
done at a time when customer traffic is low.
The raised glass should not be left unattended
and should be lowered whenever leaving the
case.
The glass front is marked with orange warning
tags to make it noticeable when in the raised
position. Do not remove the orange warning
tags.
NLBR, NLBN, NLBS
Page 8 April, 2007

5. Push cases tightly together making sure
the pull-ups are aligned.
6. Adjust legs (1) or add shims (1) under
base rails, as required, under the adjoin-
ing case ends (2). Check leveling at top
of the case (3) and on top of the color
band (4).
CAUTION
Do not drill or use other holes through the
case end for pull-ups. This may deform
the case end and could cause joint leaks
and/or poor refrigeration.
7. Position pull-up bolts and mounting
hardware (5) at pull-up locations (A and
B). Do not tighten any pull-up hardware
until all of it has been installed. Tighten
all pull-up hardware equally starting at
point A and finishing at point B.
Do not overtighten.
If case has base rails, locate highest point
on chalk lines as a reference for determin-
ing the number of shims to be placed
under the case base rails. Position first
case at highest point on the chalk lines
and shim case supports as required.
Check leveling across the top of the case
and on top of the color band.
CAUTION
If the base of this case is not sitting evenly
on the floor, the case could warp when
loaded and possibly break the lift glass.
NOTE
A foam gasket is factory installed on one
end of the case. This gasket fits into a
groove on the adjoining case when cases
are pulled together. Do not depend on the
foam gasket alone to make a good seal!
3. Apply two heavy beads of caulking
compound from the Filler Kit to the end
of case at dotted (. . .) and dashed (- - -)
lines. Proper caulking provides good
case refrigeration and sanitation.
4. Remove shipping tape from color band
backer and bumper backer.
Installation & Service Manual NLBR, NLBN, NLBS
November, 2005 Page 9

Pre-priming the hinge gas cylinders:
WARNING
If the front glass is raised before the hinge
gas cylinders are pre-primed, the glass
could break and/or cause personal injury.
After the case has been installed and leveled,
make sure the shipping braces have been
removed. Pre-prime the cylinders by gently
lifting the front glass approximately 6”, then
close. Repeat this movement at least 4 or 5
times before fully opening the lift glass.
NOTE
If the glass does not stay in the open
position, see “Lift Glass Cylinder
Replacement” in this manual.
Rear Rail Cover & Close-off Installation
Position rear rail cover (1) over rear raceway
opening and secure with screws in every
hole.
NLBR, NLBN, NLBS
Page 10 April, 2007
Lift Front Glass Leveling Instructions
Accurate leveling is critical for the proper
operation of the lift glass on this case.
In some instances, setting the case on an
apparently level floor can cause the lift glass
to fit improperly. If there is any twist in the
body, it could cause the lift glass not to fit or
work properly.
The emphasis when leveling this case must
be on making sure the lift glass works and
seals properly.
The case should be leveled across the top,
close to the hinge, and on the color band.
A 4 foot level is recommended, and both
places should be level! This will enable
the lift glass to fit and work properly.
If the lift glass still doesn’t close or line-up
properly, adjust legs or add shims to case
corners. Adjustment and shimming will
ensure proper operation and alignment of
the lift glass.
The handle on the lift glass must rest evenly
on the color band. Proper lift glass sealing
is essential for good product refrigeration.
NOTE
Do not anchor the base to the floor or
enclose the case until the lift glass is
fitting properly and working correctly.

Installation & Service Manual NLBR, NLBN, NLBS
November, 2005 Page 11
Bottom and End Close-off Installation
Kickplate, optional rear bottom and end
closeoffs have spring clips on their back
sides that secure to the pipe legs.
NOTE
Optional rear bottom close-offs do not
require joint trim.
1. Before installing kickplates on a multiple
case lineup, snap a joint trim (2) over
the top and bottom of one end of each
kickplate (3).
2. Lineup each kickplate (3) and/or optional
rear bottom close-off (4) and push to
se-cure the spring clips to the legs (5).
3. Slide joint trims (2) over the case-to-case
joints.
4. Position end close-offs (6) over the end
of the kickplate (3) and/or optional rear
bottom close-off (4) and push until the
spring clips secure to the legs (5).
Trim & NSF Thermometer Installation
The joint trim and mounting hardware are
shipped loose. Trim includes top joint trim
(1), rear upper joint trim (2), rear lower joint
trim (3), horizontal joint trim (4), front kick-
plate joint trim (5), front lower cladding joint
trim (6) and front upper cladding joint trim (7).
Horizontal joint trim covers gaps between the
cases. The trim is glued onto the shipping
cardboard. It is applied after running beads
of caulking on the edges of the cases. Sheet
metal screws can be used for additional
securing.
Patch end trim is shipped factory installed. If
field installation is required, be sure the patch
end is pulled up enough to fit snuggly against
the sealing tubing on the inside of the case.
The patch end must seal tightly against the
lift glass wiper to ensure proper operating
temperatures.
The NSF case thermometer and bracket
assembly (8) is shipped loose with the case.
After removing the thermometer and bracket
assembly from the shipping packaging,
position bracket over left horizontal joint trim
and case-to-case joint where the joint trim is
notched out. Make sure the bracket is posi-
tioned to the front of the case, flush with the
top and left inside edge of the bottom case
end welds. Secure thermometer bracket
with two screws in the pre-drilled holes.

NLBR, NLBN, NLBS
Page 12 April, 2007
See “General (UL/NSF) I&S Manual” for
bumper and color band installation and
alignment.
Refrigeration Procedures
Refrigeration system and superheat
instructions can be found in the “General
(UL/NSF) I&S Manual”.
Self-Contained Circuit (NLBS Only)
NLBS cases are self-contained units.
Information pertaining to self-contained units
should be obtained directly from TYLER
Refrigeration.
Electrical Procedures
Electrical Considerations
CAUTION
Make sure all electrical connections at
components and terminal blocks are tight.
This prevents burning of electrical termi-
nals and/or premature component failure.
NOTE
The ballast box is located at the lower left
rear corner of the case. It houses ballasts
and terminal blocks.
Case Fan Circuit (NLBR/NLBS)
This circuit is to be supplied by an uninter-
rupted, protected 120V circuit. The case fan
circuit is not cycled on this case.
Fluorescent Lamp Circuit
NLB(R/N/S) case lighting is supplied by T-8
lights. It is controlled by a light switch in
each case. The standard lighting is 2 rows of
horizontal canopy lights.
Defrost Information
See “General (UL/NSF) I&S Manual” for
operational descriptions for each type of
defrost control.
Defrost Control Chart
NLBR/NLBS Defrost Option Settings
Defrost
Defrost Defrosts Duration Term.
Type Per Day (Min) Temp.
Off Time 6 20 -----
Thermostat bulb is located under the rear
duct, 24” from the right end of the evaporator
coil.
WIRING DIAGRAMS
ELECTRICIAN NOTE - OVERCURRENT
PROTECTION
120V circuits should be protected by 15 or 20 Amp
devices per the requirements noted on the cabinet
nameplate or the National Electrical Code, Canadian
Electrical Code - Part 1, Section 28. 208V defrost
circuits employ No. 12 AWG field wire leads for field
connections. On remote cases intended for end to
end line-ups, bonding for ground may rely upon the
pull-up bolts.
The following pages 13 and 14 show wiring
diagrams for case and lighting circuits.

April, 2007 Page 13
NLBR/NLBN Domestic & Export (50 Hz) Case Circuits (59” & 77” Cases)

Page 14 April, 2007
NLBS Domestic & Export (50 Hz) Case Circuits (59” & 77” Cases)

Installation & Service Manual NLBR, NLBN, NLBS
November, 2005 Page 15
CLEANING AND SANITATION
Component Removal and
Installation Instructions for
Cleaning
Shelves and Shelf Brackets
1. Open the front curved glass by lifting the
handle at the bottom.
2. Remove product from shelves.
3. Unplug light cord from socket in mullion
covers. Completely insert socket cover in
the light socket to protect the receptacle.
4. Remove shelves and shelf brackets from
slots in rear uprights.
5. After cleaning, replace in reverse order.
Bottom Trays
1. Open the front curved glass by lifting the
handle at the bottom.
2. Remove product from bottom of case.
3. Grasp and lift out each of the bottom trays
from the case interior.
4. After cleaning, replace in reverse order.
Front Air Ducts
1. Remove bottom trays, see this page.
2. Lift out front air duct sections.
3. After cleaning, replace in reverse order.
Mullion Covers
1. Open the front curved glass by lifting the
handle at the bottom.
2. Remove mounting screws from each
mullion cover.
WARNING
Mullion covers with electrical receptacles
can be cleaned without removing the
electrical receptacles. Do not get moisture
on electrical wires when cleaning under
this cover. Moisture on wires could cause
premature product failure and/or personal
injury or death from electrical shock.
3. Carefully remove each mullion cover from
the rear uprights.
4. After cleaning, replace and secure mullion
covers in reverse order.
Front Lower Cladding
1. Remove front kickplate.
2. Lift and pull out front lower cladding until
rear tabs clear holes in front of frame
assembly. After rear tabs are clear, pull
down on cladding to clear upper tabs
from slots in bottom of upper front
cladding and remove cladding from case.
3. After cleaning, replace front lower
cladding by inserting top tabs, then rear
tabs. Make sure all tabs are securely fit
in each slot. Replace front kickplate.
Front Upper Cladding
1. Remove color band, bumper and bumper
retainer from the case. See page 19.
2. Remove front kickplate and front lower
cladding. See above.
3. Remove screws from top and bottom of
front upper cladding and remove front
upper cladding.
4. After cleaning, replace front upper
cladding and remaining front components
in the reverse order.

NLBR, NLBN, NLBS
Page 16 April, 2007
Cleaning Instructions
WARNING
TYLER Refrigeration does not recommend the use of high pressure cleaning equipment on
service style cases!! The sealing of front glass and end joints is critical in these cases and
high pressure cleaners can penetrate and/or damage these seals. Damaged seals allow
water leaks and/or air leaks that can cause poor case refrigeration.
CAUTION
• When cleaning this case, try not to intro-duce water into the case faster than it can be car-
ried away by the waste outlet.
• Liquid chlorine bleach is corrosive to metals. The use of bleach or products containing
bleach will damage metal surfaces and void the case warranty.
• Sanitize the case with Quaternary Ammonium Solutions (ex: KAYQUAT II, J-512 Sanitizer,
SANIQUAT 512, etc...) approved per 21CFR 178.1010, followed by adequate draining and
air drying. These solutions may be obtained from Kay Chemical Co., Johnson Wax
Professional, Coastwide Laboratories, etc....
• Always use a soft cloth or sponge with mild detergent and water to clean the front glass.
Never use abrasives or scouring pads to clean glass. They can scratch and/or damage
the glass.
See “General (UL/NSF) I&S Manual” for case cleaning instructions. Stainless steel cleaning
is covered in the following chart.
Stainless Steel Cleaning Methods
The cleaning data in the following stainless steel cleaning chart was supplied by AISI. The information was supplied by
Prime Metals Division, Alumax Aluminum Corporation.
TYPE OF CLEANING CLEANING AGENT* APPLICATION METHOD** EFFECT ON FINISH
Routine cleaning Soap, ammonia or deter- Sponge with cloth, then Satisfactory for use on all
gent and water. rinse with clear water and finishes.
wipe dry.
Smears and finger- Arcal 20, Lac-O-Nu, Lumin Rub with cloth as directed Satisfactory for use on all
prints Wash O’Cedar Cream on the package. finishes. Provides barrier film
Polish, Stainless Shine
Stubborn spots and Allchem Concentrated Apply with damp sponge or Satisfactory for use on all
stains, baked-on Cleaner cloth. finishes.
splatter, and other light
discolorations Samae, Twinkle, or Cameo Rub with damp cloth. Satisfactory for use on all
Copper Cleaner finishes if rubbing is light.
Grade FFF Italian pumice, Rub with damp cloth. Use in direction of polish lines
whiting or talc on No. 4 (polished) finish.
May scratch No. 2 (mill) and
No. 7 and 8 (polished) finishes.
Liquid NuSteel Rub with dry cloth. Use a Use in direction of polish lines
small amount of cleaner. on No. 4 (polished) finish.
May scratch No. 2 (mill) and
No. 7 and 8 (polished) finishes.
Paste NuSteel or DuBois Rub with dry cloth. Use a Use in direction of polish lines
Temp small amount of cleaner. on No. 4 (polished) finish.
May scratch No. 2 (mill) and
No. 7 and 8 (polished) finishes.

Installation & Service Manual NLBR, NLBN, NLBS
April, 2007 Page 17
TYPE OF CLEANING CLEANING AGENT* APPLICATION METHOD** EFFECT ON FINISH
Cooper’s Stainless Steel Apply with damp sponge or. Use in direction of polish lines
Cleaner, Revere Stainless cloth. on No. 4 (polished) finish.
Steel Cleaner May scratch No. 2 (mill) and
No. 7 and 8 (polished) finishes.
Grade F Italian pumice, Steel Rub with a damp cloth. Use in direction of polish lines
Bright, Lumin Cleaner, Zud or on No. 4 (polished) finish.
Restoro May scratch No. 2 (mill) and
No. 7 and 8 (polished) finishes.
Penny-Brite or Copper-Brite Rub with a dry cloth. Use a Use in direction of polish lines
small amount of cleaner. on No. 4 (polished) finish.
May scratch No. 2 (mill) and
No. 7 and 8 (polished) finishes.
Heat tint or heavy Penny-Brite or Copper-Brite Rub with a dry cloth. Use in direction of polish lines
discoloration on No. 4 (polished) finish.
May scratch No. 2 (mill) and
No. 7 and 8 (polished) finishes.
Paste NuSteel or DuBois Rub with dry cloth. Use a Use in direction of polish lines
Temp small amount of cleaner. on No. 4 (polished) finish.
May scratch No. 2 (mill) and
No. 7 and 8 (polished) finishes.
Revere Stainless Steel Apply with a damp sponge Use in direction of polish lines
Cleaner or cloth. on No. 4 (polished) finish.
May scratch No. 2 (mill) and
No. 7 and 8 (polished) finishes.
Allen Polish, Steel Bright, Rub with a damp cloth. Use in direction of polish lines
Wyandotte, Bab-O or Zud on No. 4 (polished) finish.
May scratch No. 2 (mill) and
No. 7 and 8 (polished) finishes.
Burnt-on foods and Easy-Off, De-Grease-It, 4-6% Apply generous coating. Excellent removal, satisfactory
grease, fatty acids, hot solution of such agents Allow to stand for 10-15 min. for use on all finishes.
milkstone (where swab- as trisodium tripolyphospate, Repeated application may
bing or rubbing is not or 5-15% caustic soda be necessary.
practical) solution
Tenacious deposits, Oakite No. 33, Dilac, Texo 12, Swab and soak with clean Satisfactory for use on all
rusty discolorations, Texo N.Y., Flash-Klenz, cloth. Let stand 15 minutes finishes.
industrial atmospheric Caddy Cleaner, Turco Scale or more according to direc-
stains 4368 or Permag 57. tions on package. Rinse
and dry.
Hard water spots Vinegar Swab or wipe with a cloth. Satisfactory for use on all
and scale Rinse with water and dry. finishes.
5% oxalic acid, 5% sulamic Swab or soak with a cloth. Satisfactory for use on all
acid, 5-10% phospheric acid, Let stand 10-15 minutes. finshes. Effective on tenacious
or Dilac, Oakite No. 33, Always follow with neutralizer deposites or where scale has
Texo 12 or Texo N.Y. rinse, and dry. built up.
Grease and oil Organic solvents such as Rub with a cloth. Organic Satisfactory for use on all
carbon tetrachloride, tri- solvents may be flammable finishes.
chlorethylene, acetone, kero- and/or toxic. Observe all
sene, gasoline, benzene, precautions against fire.
alcohol and chlorethane n.u. Do not smoke while vapors
are present. Be sure area
is well ventilated.
*Use of proprietary names is intended only to indicate a type of cleaner, and does not constitute an endorsement, nor is
omission of any proprietary cleanser to imply its inadequacy. It should be emphasized that all products should be used in
strict accordance with instructions on package.
** In all applications a sponge or fibrous brush or pad are recommended. DO NOT use ordinary steel wool, steel brushes,
chlorine bleach or products containing bleach for cleaning or sanitizing stainless steel.

NLBR, NLBN, NLBS
Page 18 April, 2007
GENERAL INFORMATION
Rear Sliding Door Removal and
Installation
The sliding doors come installed from the
factory in the door frame. These doors are
removable for cleaning and to aid in case
maintenance. NOTE: DO NOT FULLY
IMMERSE DOORS WHEN CLEANING. The
inner and outer doors are marked with labels
from the factory. If the doors are not labeled,
the inner door can be identified as having the
limiter stops on it.
1. Remove the outer door (1) by sliding it to
the right end of the door frame (2) (within
an inch of being closed).
2. Firmly grasp both sides of the outer door
(1) and lift into the upper track (3) until it
clears the lower track (4).
3. Tilt out the bottom of the outer door (1) so
it can clear the lower track (4).
4. Lower the outer door (1) out of the upper
track (3) to remove it from the case.
5. Repeat steps 1 thru 4 to remove the inner
door (5).
6. Reverse the above steps to replace the
inner and outer doors (5 and 1).

Installation & Service Manual NLBR, NLBN, NLBS
November, 2005 Page 19
SERVICE INSTRUCTIONS
Troubleshooting Self-Contained Units (NLBS Only)
WARNING
Never work on electrically powered equipment while it is energized! Electrical shock could
cause personal injury and/or death.
TROUBLE COMMON CAUSE REMEDY
1. Unit will not run Blown fuse Replace fuse.
Low voltage Check outlet with voltmeter. Voltage
should be 115V or 220V (±10%).
Inoperative motor or Check connections.
temperature control
2. Refrigerated section Shelves overloaded; Make sure items do not block the
is too warm blocked air flow air flow.
Thermostat set incorrectly Check setting.
Pressure control set Check setting.
incorrectly
Case fans not operating Check terminal block connections.
3. Refrigerated section Thermostat set incorrectly Check setting.
too cold
Pressure control set Check setting.
incorrectly
4. Unit runs all the time Inadequate air circulation Relocate cabinet or remove obstruc-
tion. Check installation requirements.
Room temperature Ventilate room appropriately.
too warm
Thermostat set incorrectly Reset thermostat.
Refrigerant charge low Have unit serviced by a qualified
service technician.
5. Noisy operation Loose baffles Tighten or brace baffles.
Tubing contacting cabinet Move tubing.
or other tubing
Cabinet not level Level cabinet.
6. Frost or ice on Defrost clock doesn’t work Check electrical conections. Have
evaporator coil unit serviced by a qualified service
technician.
7. Water dripping from Condensate drain clogged Clear drain.
case drain
Dissipator not functioning Check electrical supply. Check
float assembly.

NLBR, NLBN, NLBS
Page 20 April, 2007
Light Servicing
See “General (UL/NSF) I&S Manual” for
lamp, fan blade and motor (NLBR/NLBS
only) replacement instructions.
Ballast and Lighting Locations
All light ballasts are located in the rear
raceway channel behind the rear rail cover.
In order to retain safety approval with
Underwriters Laboratory and the Canadian
Standards Association, the mounting of
electrical components and interconnecting
wires must not deviate from the following
instructions. Only qualified personnel are
authorized to install the accessory items.
TYLER Refrigeration recommends you order
all component parts from its Service Parts
Department.
Ballast Replacement
1. Remove screws (1) and rear rail cover (2)
from rear of case.
NOTE
If tappit screws are not available, a
starwasher should be used between the
ballast and the heads of the screws.
2. Install required number of ballasts (3) in
rear electrical raceway (4) with two screws
(5) each.
3. Identify and connect required wiring
harnesses (upper, lower, etc...) to the
ballast connectors (6).
4. Replace rear rail cover (2) and secure
with screws (1).
Color Band, Anti-Sweat, Bumper
and Bumper Retainer Replacement
WARNING
Shut off or disconnect power supply to case
before changing an anti-sweat. Electrical
power from wire ends could damage other
components and/or cause personal injury
or death.
1. Open the lift glass and remove screws from
color band.
2. Carefully lift color band until the anti-sweat
connector can be disconnected. Remove
color band and color band backers.
3. Inspect anti-sweat and replace if faulty.
4. Push in on center of bumper while pulling
out on bottom of bumper. Release bottom
of bumper from full length of bumper
retainer. Firmly pull out top of bumper to
snap it free from bumper retainer.
5. Remove bumper backers from both ends
of bumper.
6. After marking position of bumper retainer on
case, remove mounting screws and bumper
retainer from case.
NOTE
All backers must be installed in same
position as removed to assure proper fit
and alignment during installation.
7. Install bumper retainer on case with mount-
ing screws in same position as removed.
8. Position bumper backers in ends of bumper
sections still installed.
9. Replace the bumper on bumper retainer.
10. Position color band backers in ends of color
band sections still installed.
11. Reconnect anti-sweat connector and install
color band on bottom glass support and
secure with screws.
12. Restore electrical power to case.