NSSD
Tyler Refrigeration
Page 14
March, 2002
temperatures rise above 45°F. This prema-
turely discolors displayed meats and causes
unnecessary meat department losses.
Radiant Heat Measurement
Place two accurate dial thermometers side by
side in a case. Cover one of the thermometer
stems with black friction tape. The tempera-
ture difference is the approximate amount of
radiant heat. A change in display lighting
or a reduction of high ceiling temperatures
(over 80°F) could reduce the radiant heat in
the case.
Display Practices
Encourage butchers
to maintain all meat
below the case load
lines and to eliminate
product voids. Case
screens could be covered in some instances
to keep the refrigerated air over the display.
CAUTION
The quality damage done to meat products
by high temperatures and/or contamination
during delivery, cooler storage, cutting and
wrapping cannot be repaired by placing
the products into properly operating dis-
play cases.
SERVICE INSTRUCTIONS
Light Servicing
See “General-UL/NSF I&S Manual” for T-8
lamp, fan blade and motor, and color band
and bumper replacement instructions.
Ballast and Lighting Locations
All NSSD light ballasts are located either in the
front raceway behind the lower front cladding,
or in the rear raceway behind the rear rail
cover. This includes remote ballasts for
optional shelf lights. The canopy light(s) are
under the canopy light channel in the top of
the case. The optional shelf lights are mount-
ed in separate light fixtures under the front of
each shelf section.
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.
