Hussmann WDCHI User manual

Hussmann®Impact™
Hot Food Merchandiser
MODEL WDCHI, SSWHI, TSWHI, CSWHI
Installation & Operation Manual
Serial Numbers 121736 and Higher

Warranty Information
LIMITED ONE YEAR WARRANTY
BKI (The “Company”) warrants to the original purchaser/user, that at time of shipment from the
Company factory, this equipment will be free from defect in materials and workmanship. Written
notice of a claim under this Warranty must be given within ONE YEAR AND THREE MONTHS
from date of shipment from the factory. Defective conditions caused by abnormal use or misuse,
lack of maintenance, damage by third parties, alterations by unauthorized personnel, acts of God,
failure to follow installation instructions or any other events beyond the control of the company will
NOT be covered under Warranty. The obligation of the Company under this Warranty shall be
limited to repairing or replacing (at the option of the company) any part that is defective in
reasonable opinion of the Company. The user will have the responsibility and expense of
removing and returning the defective part to the Company as well as the cost of reinstalling the
replacement or repaired part.
IN NO EVENT SHALL THE COMPANY BE LIABLE FOR LOSS OF USE, LOSS OF REVENUE
OR LOSS OF PRODUCT OR PROFIT OR FOR INDIRECT OR CONSEQUENTIAL DAMAGES
INCLUDING BUT NOT LIMITED TO, FOOD SPOILAGE OR PRODUCT LOSS. WARRANTY
DOES NOT COVER GLASS BREAKAGE. THE ABOVE WARRANTY IS EXCLUSIVE AND ALL
OTHER WARRANTIES, EXPRESS OR IMPLIED, ARE EXCLUDED INCLUDING THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
THIS WARRANTY SHALL APPLY ONLY WITHIN THE CONTINENTAL UNITED STATES, ITS
TERRITORIES, AND POSSESSIONS AND IN CANADA.
LIMITED NINETY DAY LABOR WARRANTY
All labor necessary to repair or replace factory defective parts will be performed, without charge,
to the end user, by service personnel of a BKI Authorized Distributor during the first ninety days
after the date of installation of the new equipment.
Replacement parts: Any appliance replacement part, except lamps and fuses, which proves to
be defective in material or workmanship within 90 days from date of original installation will be
repaired or replaced without charge F.O.B. Factory, Simpsonville, S.C. or F.O.B. authorized
distributor.

Hussmann® Impact™ Hot Food Merchandiser Table of Contents
1
Table of Contents
Table of Contents........................................................................................................................................1
Introduction .................................................................................................................................................2
Safety Precautions....................................................................................................................................2
Safety Signs and Messages.................................................................................................................2
Safe Work Practices.............................................................................................................................3
Safety Labels............................................................................................................................................5
Operation .....................................................................................................................................................6
Controls.....................................................................................................................................................6
Preheating.................................................................................................................................................6
Temperature Adjustment..........................................................................................................................7
Operational Guidelines.............................................................................................................................7
Unit Shutdown...........................................................................................................................................7
Installation ...................................................................................................................................................8
NSF Certification.......................................................................................................................................8
Location ....................................................................................................................................................8
Shipping Damage.....................................................................................................................................9
Shipping Braces........................................................................................................................................9
Shipping Rider ..........................................................................................................................................9
Case Leveling.........................................................................................................................................10
Preparation.........................................................................................................................................10
Leveler Adjustment.............................................................................................................................10
Glass Positioning....................................................................................................................................11
Raising/Lowering Glass Using Adjustment Bolt.................................................................................13
Joining Instructions.................................................................................................................................16
Wiring......................................................................................................................................................22
Installing Splashguard And Lower Front Panel ......................................................................................23
Splashguards......................................................................................................................................23
Lower Front Panel..............................................................................................................................23
Installing Bottom Rear Panel..................................................................................................................24
Maintenance ..............................................................................................................................................25
Scheduled Maintenance.........................................................................................................................25
Cleaning .............................................................................................................................................25
Troubleshooting......................................................................................................................................26
Notes ..........................................................................................................................................................27

Hussmann® Impact™ Hot Food Merchandiser Introduction
2
Introduction
Congratulations! You have chosen a Hot Food Merchandiser. It consists of thermostatically controlled hot
food waterless wells, canopy heaters/lighting, customer side curved glass service door with lift hardware,
operator side service doors, bumpers, splashguards and electronic controls.
This unit is manufactured by BKI which assures you of the finest in design and engineering -- that it has
been built with care and dedication -- using the best materials available. Attention to the operating
instructions regarding proper installation, operation, and maintenance will result in long lasting
dependability to insure the highest profitable return on your investment.
PLEASE READ THIS ENTIRE MANUAL BEFORE OPERATING THE UNIT. If
you have any questions, please contact your BKI Distributor. If they are unable to
answer your questions, contact the BKI Technical Service Department, toll free:
1-800-927-6887. Outside the U.S., call 1-864-963-3471.
This unit is to be sealed to the floor after installation to conform to NSF
requirements. (Dow Corning RTV #732 Multi purpose Sealant.)
Safety Precautions
Always follow recommended safety precautions listed in this manual. Below is the safety alert symbol.
When you see this symbol on your equipment, be alert to the potential for personal injury or property
damage.
Safety Signs and Messages
The following Safety signs and messages are placed in this manual to provide instructions and identify
specific areas where potential hazards exist and special precautions should be taken. Know and
understand the meaning of these instructions, signs, and messages. Damage to the equipment, death or
serious injury to you or other persons may result if these messages are not followed.
This message indicates an imminently hazardous situation which, if not avoided,
will result in death or serious injury.
This message indicates a potentially hazardous situation, which, if not avoided,
could result in death or serious injury.
This message indicates a potentially hazardous situation, which, if not avoided,
may result in minor or moderate injury. It may also be used to alert against unsafe
practices.
This message is used when special information, instructions or identification are
required relating to procedures, equipment, tools, capacities and other special
data.

Hussmann® Impact™ Hot Food Merchandiser Introduction
3
Safe Work Practices
Beware of High Voltage
This equipment uses high voltage. Serious injury can occur if you or
any untrained or unauthorized person installs, services, or repairs this
equipment. Always Use an Authorized Service agent to Service Your
Equipment
Keep this manual with the Equipment
This manual is an important part of your equipment. Always keep it
near for easy access.
If you need to replace this manual, contact:
BKI
Technical Services Department
P.O. Box 80400
Simpsonville, S.C. 29680-0400
Or call toll free: 1-800-927-6887
Outside the U.S., call 864-963-3471
Protect Children
Keep children away from this equipment. Children may not understand
that this equipment is dangerous for them and others.
NEVER allow children to play near or operate your equipment.
Keep Safety Labels Clean and in Good Condition
Do not remove or cover any safety labels on your equipment. Keep all
safety labels clean and in good condition. Replace any damaged or
missing safety labels. Refer to the Safety Labels section for illustration
and location of safety labels on this unit. If you need a new safety
label, obtain the number of the specific label illustrated on page 5,
then contact:
BKI
Technical Services Department
P.O. Box 80400
Simpsonville, S.C. 29680-0400
Or call toll free: 1-800-927-6887
Outside the U.S., call 864-963-3471

Hussmann® Impact™ Hot Food Merchandiser Introduction
4
911
Be Prepared for Emergencies
Be prepared for fires, injuries, or other emergencies.
Keep a first aid kit and a fire extinguisher near the equipment. You
must use a 40-pound Type BC fire extinguisher and keep it within 25
feet of your equipment.
Keep emergency numbers for doctors, ambulance services, hospitals,
and the fire department near your telephone.
Know your responsibilities as an Employer
• Make certain your employees know how to operate the equipment.
• Make certain your employees are aware of the safety precautions
on the equipment and in this manual.
• Make certain that you have thoroughly trained your employees
about operating the equipment safely.
• Make certain the equipment is in proper working condition. If you
make unauthorized modifications to the equipment, you will reduce
the function and safety of the equipment.

Hussmann® Impact™ Hot Food Merchandiser Introduction
5
Safety Labels

Hussmann® Impact™ Hot Food Merchandiser Operation
6
Operation
Controls
The merchandiser controls are shown in the figure below. The POWER switch turns the power supply to
the unit on and off. The LIGHTS switch turns the lights in the unit on and off. The POWER switch must be
turned on for the lights to operate.
The well and canopy heaters for each well section of the unit are individually controlled as shown in figure
above. (TSWHI units – the well and shelf heaters are individually controlled.) With the indicator on the
control knob turned to the 12 o’clock position as shown, the heaters produce no heat.
To increase the temperature of the lower well heater, rotate its control knob clockwise. Likewise, to
increase the temperature of the canopy heater, rotate its control knob counterclockwise.
Preheating
To preheat the equipment, position the temperature control knobs on each well to the number 5. You
should allow the equipment to preheat for a minimum of 30 minutes before loading it with product.
Each well is equipped with a pilot light indicator. The pilot light indicator is designed to turn OFF when the
well reaches set temperature. During operation the pilot light indicator will turn OFF and ON as the well
maintains proper temperature.

Hussmann® Impact™ Hot Food Merchandiser Operation
7
Check Federal and State Health and Sanitation Regulations for internal temperature required for holding
cooked foods for sale. Maintaining these temperatures often tend to allow continued cooking of certain
products. Therefore, smaller amounts of bulk foods should be displayed at non-peak periods and the
warmer refilled as needed.
All meats and vegetables should be preheated to 160 degrees F. before being placed in the case.
A screen liner can be used in the bottom of the display pans that are used for holding meats. This will
keep meats from sticking to the bottom of the pans.
Temperature Adjustment
After placing the product into the equipment, it may be necessary to adjust the temperature adjustment
knobs in order to maintain the proper internal temperature for the product on display. A thermometer
should be used to read the internal temperature of each product. The temperature control knobs should
be set to the lowest possible number that will maintain the proper product temperature.
Operational Guidelines
• Keep portable meat thermometers on hand. Check the food temperatures hourly.
• Rotate the food products. Foods loaded in first should be served first as much as is practical.
• Foods held for long periods of time are more difficult to maintain at proper temperature. Also,
freshness and product quality diminish if foods are held too long. Most areas of the country have
sanitation regulations governing how long foods can be held. Make certain to check with your
local authorities.
Unit Shutdown
Remove all food pans holding the food product from the equipment. Turn OFF the power to the wells by
positioning the temperature knobs to the OFF position. Turn OFF the lights. After the temperature has
cooled down, remove any residue from the wells and clean the equipment thoroughly.

Hussmann® Impact™ Hot Food Merchandiser Installation
8
Installation
NSF Certification
This merchandiser is manufactured to meet ANSI/National Sanitation Foundation (NSF®) Standard #7
requirements. Proper installation is required to maintain certification.
Location
This merchandiser is designed for displaying products in air-conditioned stores where temperature is
maintained at or below the ANSI/NSF-7 specified level and relative humidity is maintained at or below
55%.
This merchandiser is sensitive to air disturbances. Air currents passing around the merchandiser will
seriously impair its operation. Do NOT allow air conditioning, electric fans, open doors or windows, etc. to
create air currents around the merchandiser.
The product should always be maintained at 145° F to maximize its display life.
Read before raising front glass.
The top cylinders, which allow the raising and lowering of this glass, have been
carefully installed and tested for the proper tension before shipment. However,
during shipment and storage, the lubricant inside the cylinders may have settled.
This settling can cause excessive or uneven tension on the glass to the point of
breakage.
To avoid any damage, please do the following before completely raising the
front glass.
1. Slowly raise and lower each glass section 6 times to a height of 6 in.
(152 mm).
2. Increase the height to about 12 in. (305 mm) and raise and lower the
glass 6 times.
3. Then raise the glass to the full extension and lower.
This should release any settled lubricant in the cylinders and prevent any stress
on the front glass.
Do NOT remove shipping braces until the merchandisers are positioned for
installation.

Hussmann® Impact™ Hot Food Merchandiser Installation
9
Shipping Damage
YOU are responsible for filling all freight claims with the delivering truck line. Inspect all cartons and
crates for damage as soon as they arrive. If damage to cartons or crates is found, or if a shortage is
found, note this on the bill of lading (all copies) prior to signing.
If damage is found when the equipment is opened, immediately call the delivering truck line and follow up
the call with a written report indicating concealed damage to your shipment. Ask for an immediate
inspection of your concealed damage item. Packaging material MUST be retained to show the inspector
from the truck line.
Do not walk or put heavy object on top of merchandisers.
Damage to the merchandisers and serious personal injury could occur.
Merchandisers ARE NOT STRUCTURALLY DESIGNED TO SUPPORT EXCESSIVE
EXTERNAL LOADING such as the weight of a person. Do not place heavy objects
on the case.
Shipping Braces
Note: Be careful not to damage the factory-installed end while moving the case. Make sure that tools are
positioned past the end and beneath the merchandiser’s support bar.
Move the fixture as close as possible to its permanent location and then remove all packaging and
shipping braces. Check for damage before discarding packaging. Remove all separately packed
accessories such as kits, and shelves.
Remove all nut retainers used with shipping braces. NSF certification requires the use of ANSI Standard
nuts and bolts with not more than 2 threads showing after installation.
Shipping Rider
Each case is shipped on a rider to protect factory-installed legs, and to make positioning the case easier.
Remove the rider after the case has been positioned.
Note: Once the rider is removed, the case must be lifted –NOT PUSHED– to reposition.
To remove the rider, remove screws attaching each leg to rider. Remove screws holding rider cross-
members, then slide cross-members out from between sides. Once cross-members are out, slide the
sides out.

Hussmann® Impact™ Hot Food Merchandiser Installation
10
Case Leveling
Merchandisers must be installed level to ensure proper operation. During all steps of setting, joining and
leveling cases, close attention to glass position and operation must be maintained. Please review all
steps and photos before making any adjustments. DO NOT make any glass adjustments until individual
case is set and level.
Preparation
1. Using store blueprints, measure off and mark on floor the exact dimensions/locations of the case
footprint.
2. Snap a chalk line for the front and rear positions of the base legs.
3. Mark the location of each joint from front to back lines.
4. FLOORS ARE NOT LEVEL!!! When working with two or more cases to be joined, the whole
lineup must be leveled on the same plane, left to right and front to back. This means that the
entire lineup must be brought up to the level of the highest case in the lineup.
Along the lines previously marked, find the highest point of the floor by:
• Walking the floor and noticing any dips or mounds;
• Using a string level; and
• Using a transit.
Leveler Adjustment
Position the first case at the highest point. Set a long level (4 ft [1220 mm] or more) on the upper front
panel of the case. Use an open-end wrench to turn leg levelers until the case is level from end to end and
from front to back. Check all 6 legs on 8 ft (2438 mm) cases, or 8 legs on 12 ft (3658 mm) cases.
Note: To avoid removing concrete flooring, begin lineup leveling from the highest point of the store floor

Hussmann® Impact™ Hot Food Merchandiser Installation
11
Attention to glass position is critical during the leveling process.
Adjusting leg levelers will affect the position of the glass. Make certain that the glass is square with the
case, avoiding interference with other glass and case ends.
If the glass is still out of alignment, refer to the following Glass Positioning instructions.
Glass must be properly supported when adjusting.
Glass Positioning
Follow the procedures below to improve the opening and closing of the case front glass.
1. Ensure the case has been leveled according to the Case Leveling procedure.
2. Ensure that the glass handle is installed correctly.
Verify the glass is bottomed out the length of the handle. A bowed handle indicates the glass may
not be bottomed out at the center of the handle.
The handle must be removed before it can be repositioned. The handle is held in place with
silicone that must be completely removed from the handle and the glass. Remove the handle by
pulling it away from the glass (do not use tools to pry this loose). A damaged or bent handle must
be replaced. Apply new silicone into the handle and firmly press onto the glass.
3. Ensure that the glass is seated in the clamp hardware correctly.
Verify glass is bottomed out in clamp hardware.

Hussmann® Impact™ Hot Food Merchandiser Installation
12
If the glass is not bottomed out in the clamp hardware it can be re-positioned as follows:
a. Remove the glass and clamp hardware from the case by opening the glass and loosening
set screws in hinge, (Metric 3 millimeter set screws).
b. Slide the glass and clamp hardware to the side, out of the hinges, and lay them on an
appropriate work surface.
Note: adjacent glass must be closed.
c. Loosen the 8 set screws on the underside of the clamp hardware.
d. Push the clamp hardware onto the glass until bottomed out.
e. The clamp hardware must overhang the glass by an equal amount on each side.
f. Tighten set-screws and re-install on case.
4. Slowly open and close the glass to make sure that it is not hitting the end or adjacent glass. If the
glass is hitting the end or adjacent glass it may not be positioned correctly from left to right. This
can be adjusted as follows:
a. Loosen the 2 screws holding the hinge to the clamp hardware (Metric 3 millimeter screws).
b. Slide the clamp hardware to either side as needed.

Hussmann® Impact™ Hot Food Merchandiser Installation
13
c. Tighten the screws and check glass for proper operation.
5. Slowly open and close the glass to make sure that it is still not hitting adjacent glass.
Each glass has been shipped with a flexible wiper gasket attached to each side. These are
designed to overlap each other, sealing the gap between the glass and allowing side-to-side
glass adjustment. After all glass has been adjusted as defined in Step 4, the flexible portion of
one gasket at a joint may be trimmed with a razor knife. Be sure that the remaining wiper gasket
seals the gap. Verify proper operation.
Raising/Lowering Glass Using Adjustment Bolt
If the glass still does not open or close correctly, adjustment of the top frame may be necessary.
This case is equipped with an adjustment bolt at the top rear of the case to raise or lower the glass. This
allows for improvements in the glass operation and sealing. The following outlines how to access the
adjustment bolt. The top must be free to move as the adjustment bolt is turned.
1. Loosen joining or end bolts at top of case, (2 at each end of case).
2. If caulk or silicone has been applied between case joints or ends in the top area it must be
removed.
3. Remove rear doors.

Hussmann® Impact™ Hot Food Merchandiser Installation
14
4. Remove screws at top of rear doorframe. The bottom screws do not need to be removed.
5. Pull back the top of the doorframe approximately 2 inches. This will allow clearance for removal of
the stainless steel top liner and trim pieces.
6. Some models have a Phillips truss head screw holding the stainless steel liner to the trim. These
screws are visible from the rear of the case to the side of the door frame. These must be
removed.
7. Remove stainless steel top liner by grabbing the rear flange and pulling back. Note: It is possible
to access the adjusting bolt by using a small swivel socket without removing the stainless top
liner. To do this, the stainless steel trim and foam noted in Step 8 must be removed.
8. Remove stainless steel trim pieces and foam insulation on each side of the doorframe.
9. The set screw and adjusting bolt are now accessible.
• The set screw must be backed out before turning the adjusting bolt, (1/8 inch set screw). The
set screw serves as a positive stop.
• The adjusting bolt should be turned no more than a half-turn before inspecting glass position
and operation.
• Turning the adjusting bolt clockwise will raise the front glass.
• Turning the adjusting bolt counter-clockwise will lower the front glass.
• Once the glass position is set, tighten the set screw (positive stop).

Hussmann® Impact™ Hot Food Merchandiser Installation
15
10. Once glass is positioned and operating correctly, re-install components and hardware removed.
Note: the doorframe is designed to have a tight fit. A putty knife between the top of the frame and the
insulated panel will help guide it into position.
11. Re-apply caulk or silicone as required.
12. Verify glass is positioned and operating correctly.

Hussmann® Impact™ Hot Food Merchandiser Installation
16
Joining Instructions
1. Install the Top Gasket Pad (Item 4 and DETAIL F) and apply Silicone (Item 3 and DETAIL H-a).

Hussmann® Impact™ Hot Food Merchandiser Installation
17
2. The complete lineup must be leveled to the highest point of the floor. After the first merchandiser
has been set, position the second so the end frames touch.
a. Set a long level (4 foot or more) on the upper front panel of the merchandisers. Adjust case
height by rotating the Adjustable Leg Leveler until the merchandisers are flush and level.
b. Also check each joint area to be sure that the panels of adjoining merchandisers are flush to
each other.

Hussmann® Impact™ Hot Food Merchandiser Installation
18
3. Align the top extrusion and insert Joining Plate (Item 7).
4. Use 8-18 x 3/8 Truss Head SM Screws (Item 8) to fasten the plate using the predrilled pilot holes
as shown below.
5. Align the Rear Sill and attach Joining Bracket (Item 9) with 10-24 x ½ Washer Head Machine
Screws (Item 10). Use only specified fasteners. Longer screws will penetrate the Rear Sill
causing damage.