Operation; General - Hatco HZMS Série Manuel D'installation Et D'utilisation

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General

Heated Zone merchandisers are setup at the factory for energy-
saving, automatic operation (auto mode). Refer to "Factory
Setpoints" in the SPECIFICaTIONS section for factory setpoint
information. Use the following information and procedures to
operate a Heated Zone merchandiser.
WARNING
Read all safety messages in the IMPORTANT SAFETy
INFORMATION section before operating this equipment.
Do not place food product directly onto hardcoat surface.
Food product must be wrapped, boxed, or on a food pan.
NOTICE
Do not slide pans across hardcoat surface, use rough-
bottomed pans, or drop anything on hardcoat surface.
Scratching may occur. Damage to hardcoat surface caused
by misuse is not covered under warranty.
Theory of Operation
The Heated Zone merchandiser is designed for efficient and
environmentally-friendly operation by heating specific "zones"
only when product is present. The operation of the Heated Zone
merchandiser is controlled by a series of optical sensors and
the LCD controller. The sensors are located along the sides of
each hardcoat shelf. Larger units have additional sensors
located in zone dividers that separate each shelf into multiple
overhead heat zones.
For all sizes of units, each hardcoat shelf is equipped with
separate front and rear heating elements. These two elements
operate independently in auto mode.
The number of overhead ribbon heating elements is determined
by the size of the unit. The overhead elements above each
hardcoat shelf are considered individual heat zones. This means
that the number of zones on each shelf is either two, four, or
six—depending on the size of the unit. Each overhead element
operates independently in auto mode.
NOTE: Each shelf on a Heated Zone Merchandiser can be set
to a different operating mode.
auto mode Operation
at startup in auto mode operation, all shelf heating elements
and overhead heating elements in an empty Heated Zone
merchandiser will be in Stand-By. The front and rear shelf
elements will heat at their Stand-By power percentage to the
setpoint temperature. all overhead elements remain off. When
product is placed on a shelf, the optical sensors signal the LCD
controller, and the controller activates the appropriate shelf
elements and overhead elements. Each of the shelf elements
affected by the placement of product will heat at full wattage to
the setpoint temperature. Each of the overhead elements
affected by the placement of product will heat at its setpoint
power percentage. all affected elements will remain activated
until all product is removed from the "zone." anytime a zone is
emptied of product, the zone will return to Stand-By.
On mode Operation
at startup in On mode operation, all shelf heating elements will
heat at full wattage to the setpoint temperature, and all
overhead heating elements will heat at their setpoint power
percentage. all shelf elements will remain at full wattage and
all overhead elements will remain at their setpoint power
percentage the entire time the unit is on.
Form No. HZmm-0414
Off mode Operation
at startup in Off mode operation, all shelf heating elements and
overhead heating elements are disabled. Only the LED lights
above each shelf will illuminate. This mode provides ambient
lighting for the display of non-heated product.
Startup
1. move the Power ON/OFF (I/O) switch to the ON (I) position.
• The LED lights will illuminate.
• The LCD controller will startup. after the startup screens
and during operation, the display will cycle through the
overhead heat zones showing their current status and
temperature.
• auto mode = all shelf elements will heat at Stand-By
power percentage to the setpoint temperature. all
overhead elements remain off.
On mode = all shelf elements will heat at full wattage to
the setpoint temperature. all overhead elements will heat
at their setpoint power percentage.
Off mode = all heating elements are disabled—for
ambient lighting only.
Warning
Light
HZm Series Control Panel
NOTE: If the warning light comes on at any time, the unit is
overheating/malfunctioning. Turn off and unplug the
unit. Contact an Authorized Service Agent or Hatco for
assistance.
BURN HAZARD: Some exterior surfaces on unit will get
hot. Use caution when touching these areas.
2. When unit is at operating temperature, place pre-heated,
wrapped food product onto the desired shelf.
• auto mode = The optical sensors will signal the LCD
controller, and the controller will activate the appropriate
zone(s).
3. Continue to load and empty the shelves on the unit as
desired.
• auto mode = The various zones in the unit will adjust
automatically to the levels of product on the
shelves—ensuring maximum efficiency.
NOTE: To change the shelf setpoint temperature(s), element
power percentages, or the operating mode, refer to the
appropriate procedure in this section.
Shutdown
1. move the Power ON/OFF (I/O) switch to the OFF (O)
position. all LED lights, heating elements, and the LCD
controller will shut off.
11

OPERATION

Display
LCD Controller
Power ON/OFF (I/O) Switch
CAUTION