Carrier TYLER Advantage NLBN, Installation & Service Manual

Page: 20 / 27

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.