Lang LCE-401DP Service Manual
INSTRUCTIONS FOR THE TECHNICAL EXPERT
LCE-401DP
05 2000 II
39D0390
IMPORTANT IMPORTANT IMPORTANT
Post in a prominent location, a set of instructions to be followed in the event
the user smell gas. Obtain these instructions from your local gas supplier.
FOR YOUR SAFETY: Do not store or use gasoline or other flammable vapors
and liquids in the vicintiy of this or any other gas appliance.
In the event a gas odor is detected, shut down units at the main shut-off valve
and contact the local gas company or supplier for service.
WARNING: Improper installation, adjustment, alteration, service or
maintenance can cause property damage, injury or death. Read the
installation, operating and maintenance intructions thoroughly before installing
or servicing this equipment.
Installation, startup and adjustments of this appliance should be accomplished
by personnel qualified to install gas equipment.
Retain this manual for future reference.
Section A
GENERAL INSTRUCTIONS
1. Preliminary operations
Make sure the appliance is supplied complete and has not been
damaged in transit.
2. Positioning
Keep the appliance area free and clear of combustible material and do not obstruct the flow of
combustion or ventilation air.
The installation of any components such as a vent hood, grease extractors, and/or fire
extinguisher systems, must conform to the their applicable nationally recognized installation
standards.
3. Gas connection
☞
For the exact position and size of connections, consult the gas connection chart
enclosed in Section B.
All gas connections must be in accordance with local codes and comply with the National
Fuel Gas Code ANSI Z223.1 latest edition, Natural Gas Installation Code CAN/CGA - B149.1
or Propane Installation Code CAN/CGA - B149.2.
Connect each oven separately. A gas shut off valve must be installed to the oven(s) and
located in an accessible area.
This appliance and its individual shutoff valve must be disconnected from the gas supply
piping system during any pressure testing of that system at test pressures in excess of 1/2
PSGI (3.45 kPA) and the appliance must be isolated from the gas supply piping system by
closing its individual manual shutoff valve during any pressure testing of the gas supply
system at test pressures equal to or less than 1/2 PSIG (3.45 kPA).
3.1 Test gas
Model
XXX
NAT. - 7" 4.5"
1 2 3
Btu/h
Serial number
120V1N 60 Hz A
1) Gas type and supply pressure
2) Injector pressure
3) Input rating Btu/h
☞
gas with wich it is to be operated.
Always check the pressure of the the gas supply. For this purpose, use the pressure test
outlet provided on the appliance, following procedure outlined in section B.
Test for gas leaks. Use a commercial leak detector or a soap and water solution.
Check the data plate to make sure that the appliance has been tested for the type of
WARNING
DO NOT USE AN OPEN FLAME TO TEST FOR GAS LEAKS.
- 1 -
Section A
GENERAL INSTRUCTIONS
4. Electrical connection
The appliace must be electrically grounded in accordance with local codes, or in the absence
of local codes, with the
Code, CSA C22.1
-.2.
National Electrical Code, ANSI/NFPA 70
, or the
Canadian Electrical
4.1 Operating voltage
Model
XXX Serial number
NAT. - 7" 4.5" Btu/h
120V1N 60 Hz A
☞
☞
☞
Check the data plate to make sure the operating voltage and frequency of the
appliance correspond to those of mains supply.
Adhere scrupulously to the indications in the technical chart and in the wiring diagram,
and the instructions contained in section B.
In the notes for the customer service is indicated the location of the wiring diagram on
the appliance.
Check the current absorption indicated on the data plate to determine the crosssectional area of the supply cable.
XXXXXXXXXX 0000
208V3
~ A Hz kW
0000000000000000000
5. Water connection
This appliance is to be installed to comply with the applicable Federal, state, or local
plumbing codes having jurisdiction.
☞
☞
☞
☞
Always install a stop-valve upstream of the appliance.
Downstream of the stop-cock, install appropriate fittings for easy disconnection of the
appliance and filters which can easily be inspected and cleaned.
Use materials, seals and fittings approved according to applicable standards. Use
suitable pipes which have properly treated in order to prevent the release of iron
oxides into the water (as these can alter the taste of the food and mark stainless
steel).
Make sure the water specifications are within the limits indicated in section B.
If necessary, install a suitable water treatment system.
- 2 -
1. INSTALLATION
1.1 Connections
LCE-401DP
46.4"
Water inlet
Demineralised
water inlet
Water drain
Terminal board 3 Ph
Cable gland
Equipotential terminal
1.2 Positioning
• leave at least 4" clearance
between the rear of the appliance and the
wall
• leave at least 20" clearance at the
sides of the appliance
3
Ø
3
Ø
Ø 1"
/4"
/4"
1
63.7"
/
2
11.8"
2.7"
4.2"
3.7"
6.5"
2.1"
13.9"
75.5"
18.8"
35"
2"
46.4"
The cooling outlets of the control
section of the oven (side panel)
must not be near sources of
hot fumes or steam.
1.9"
All clearance requirements are the same for combustible or non combustible constructions.
For use only on non combustible foor.
1.3 Specifications
208V 3 Ph 60Hz 52.8 kW 147 A
240V 3 Ph 60Hz 52.8 kW 127 A
480V 3 Ph 60Hz 52.8 kW 66 A
(total weight of the appliance is marked on the packaging)
ELECTRICAL RATING
VOLTAGE POWER RATING MAX. LOAD (A)
Maximum sound pressure is no higher than 70 dB (A)
- 1 -
1. INSTALLATION
1.4 Installation - procedure
Fit the following units on the top of the oven:
• Steam vent pipe
Fit the following units beneath the oven:
• Transfer truck guides, to be preassembled as shown in the figure and then screwed to the
oven base through the predrilled holes.
1-1
1. INSTALLATION
1.5 Water connections
Connecting the water supply
1) Remove the lh side panel by unscrewing the
two fixing screws at the bottom (if the optional spray gun is fitted - also the relative fixing
screws must be removed).
2) Fit the supplied filters on the water inlet connections in an accessible position.
The appliance must be supplied exclusively with
cold water conforming to the following specifications:
Pressure:
(30
- 80 PSI)
pH: from 7 to 7.5;
Conductivity: less than 200 µS/cm;
t.d.s. < 100 ppm
Hardness: connection W1: from 6.3 to 8.8 °e (5...7
°d, 9 ...13 °f, or 90 ...125 ppm); connection W2:
we recommend demineralised water or very soft
water (0.7...3.5 °e = 1...5 °f = 0.5...2.8 °d = 10...50
ppm)(5 - 10° clark);
Max. salinity and ion content in mg/l:
- chlorides < 30; sulphates < 40; Fe (iron) < 0.1; Cu
(copper) < 0.05; Mn (manganese) < 0.05.
between 200 and 600 kPa
;
Spray gun
support
1
Pressure
gauges
Water
pressure
regulator
screws
Internal pressure gauges must give a reading
of 100 kPa (15 PSI); if the reading is
different, correct by adjusting the pressure
2
regulators.
Water drain
WARNING: to ensure the appliance operates correctly and to
avoid the risk of serious damage, the drain must be vented (i.e.
in communication with the atmosphere).
The material of the drainage pipe must be heat resistant type and
not flexible.
min. Ø 1"
min. 5% (3°)
1/2
w1
w2
3/4"
Condensate drain
Connect a suitable tube to
the fitting on the condensate tray and connect to
the drain pipe.
3/4"
max. 5 ft
1-2
min. Ø 1"
1/2
1. INSTALLATION
1.6 Electrical connection
terminal board
Equipotential connection
• The equipotential terminal ( ) is located beneath the appliance at the rear lh corner.
Mains connection
• Remove the lh side panel as indicated in heading 1.5.
• Read the general precautionary notes in Chapter 4, Section A. of this handbook.
• Fit the suitable cable gland in the relative hole.
• Route the cable from the main power switch through the cable gland, and connect the wires
to the terminal board (see electrical diagram on next page).
N.B.: After making the connection ensure that the motor turns
in the direction indicated by the arrow on the fan shroud (in
the oven chamber).
cable gland
1-3
1.6.1 Wiring diagram
DRAIN
THERMOSTAT
30-90°C
SAFETY THERMOSTAT
LOWER CHAMBER
UPPER DRAIN
LOWER DRAIN
HALF SPEED
UPPER MOTOR
UPPER CHAMBER
SAFETY THERMOSTAT
UPPER
MOTOR
LOWER
MOTOR
DOOR
MICROSWITCH
LOWER
MOTOR
FILTER
LC
STB CAMERA
ELECTRONIC BOARD
UPPER
CHAMBER
DRAIN
PROBE
PROBE
MICRO DOOR
CORE
PROBE
LOWER
CHAMBER
PROBE
UPPER SMALL
UPPER LARGE
LOWER SMALL
FULL SPEED LOWER
MOTOR CONTACTOR
LOWER LARGE
HALF SPEED LOWER
MOTOR OVERLOAD RELAY
LOWER
MOTOR
FULL SPEED
LOWER MOTOR
OVERLOAD RELAY
1. INSTALLATION
1-4
UPPER CHAMBER
UPPER
H.ELEMENT
CONTACTOR
UPPER
SECURITY
CONTACTOR
RIGHT PANEL
LOWER CHAMBER
LOWER
H.ELEMENT
CONTACTOR
LOWER
SECURITY
CONTACTOR
LAMP LAMP LAMP LAMP
HALF
SPEED
CONTACTOR
CONTACTOR
ELECTRIC CABINET
FULL
SPEED
UPPER
MOTOR
F1 1A
LOWER
MOTOR
LOWER
CHAMBER PRESS.
UPPER
DRAIN PRESS.
UPPER SECURITY
CONTACTOR
H.ELEMENT
CONTACTOR
UPPER
F2 1A
LEFT PANEL
UPPER
CHAMBER PRESS.
LCE-401DP 208/240V 3Ph
LOWER
SECURITY
CONTACTOR
LOWER
H.ELEMENT
CONTACTOR
TERMINAL BOARD
UPPER MOTOR
OVERLOAD RELAY
CONTACTOR
F3 20A
F4 20A
F5 20A
HALF SPEED
LOWER
SPEED
MOTOR
UPPER
MOTOR
FULL
SPEED
MOTOR
CONTACTOR
ELECTRIC CABINET
FULL SPEED
UPPER MOTOR
CONTACTOR
ELECTRIC CABINET
TRANSFORMER
Loading...