McDonald’s Heated Landing Zone

The HLZ is designed to hold wrapped sandwiches while the meal order is completed

Five screws on the bottom of the unit secure the controllertower.

Nuts holding theair tower diffuserin place should beloosened, not removedwhen dismantling theunit.

The sealant on the seam of the heater plate must becut prior to prying the plate off of its adhesive backing.Remove the plate when the unit is hot; the adhesive will be more pliable.

Air RTD

Air Thermocouple

Relays

Fuses

Blower Assembly

Air Heater

Check temp. of heater plate/ adjust setpoint

Check temp. of air heater/ adjust setpoint

ON/OFFAdjust setpoint

Programmingswitch

The setpoint for the plate and the air heater can be changed:

• With the unit off, press the Check button and then buttonsmarked 1,2,3,3 in that sequence.

• SET will be displayed.• Press 1 to adjust heater plate; press 4 to adjust air temp.• Use UP (2) and DOWN (3) arrow keys to adjust setpoint.

• Press Check to lock in changes.

The reliability of the HLZ’s temperature readouts can be checked. Test ports are positioned on the unit’s front panel, which allow independent measurement of the heater plate and air heater’s temperature. A variance of ± 50F between readout and meter is acceptable.

0

12V

LOAD

COM 208/240V

FUSEBLOCK

POWERCORD

WHT BLK GRN/Y

240V OPTION(CAP UNUSED WIREW/MALE PUSH-ON)

PLATE HEATER

AIR HEATER

GRN

WH

TBLK

RED BLOWER

TOPPLATE THERMOCOUPLE (TYPE K)

BOTTOM

RED

WHT

BLK

AIR HEATRELAY

PLATERELAY

HYPOTTEST POINT

+ +

LATCHRELAY186

42 0

AIR THERMOCOUPLE (TYPE K)

COMPUTER

TEST RED WIRENEGATIVEPLUGS

7 82 91 1243 65 1411 13 1510

RED

WHT

BRNPLATERTD

AIR RTD

208V OPTION

HLZ Wiring Diagram