Lang LCE-401DP User manual

INSTRUCTIONS FOR THE TECHNICAL EXPERT

05 2000 II

39D0390

LCE-401DP

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.

- 1 -

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

Check the data plate to make sure that the appliance has been tested for the type of

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.

☞

Model XXX

Serial number

NAT. - 7" 4.5" Btu/h

120V1N 60 Hz A

1) Gas type and supply pressure

2) Injector pressure

3) Input rating Btu/h

WARNING

DO NOT USE AN OPEN FLAME TO TEST FOR GAS LEAKS.

Section A

GENERAL INSTRUCTIONS

1 2 3

- 2 -

4. Electrical connection

The appliace must be electrically grounded in accordance with local codes, or in the absence

of local codes, with the

National Electrical Code, ANSI/NFPA 70

, or the

Canadian Electrical

Code, CSA C22.1

-.2.

4.1 Operating voltage

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 cross-

sectional area of the supply cable.

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.

☞

Model XXX Serial number

NAT. - 7" 4.5" Btu/h

120V1N 60 Hz A

XXXXXXXXXX 0000

0000000000000000000

208V3 ~ A Hz kW

Section A

GENERAL INSTRUCTIONS

- 1 -

46.4"

2.7"

2.1"

4.2"

3.7"

6.5"

13.9"

35"

2"

1.9"

63.7"

11.8"

75.5"

18.8"

1. INSTALLATION

LCE-401DP

1.1 Connections

• 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

1.2 Positioning

1.3 Specifications

(total weight of the appliance is marked on the packaging)

All clearance requirements are the same for combustible or non combustible constructions.

For use only on non combustible foor.

The cooling outlets of the control

section of the oven (side panel)

must not be near sources of

hot fumes or steam.

Cable gland

Equipotential terminal

Terminal board 3 Ph

Water inlet

Water drain

Ø 1"

1

/

2

Ø

3

/

4

"

Demineralised

water inlet

Ø

3

/

4

"

Maximum sound pressure is no higher than 70 dB (A)

ELECTRICAL RATING

VOLTAGE POWER RATING MAX. LOAD (A)

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

1-1

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.

min. Ø 1"

1/2

min. 5% (3°)

max. 5 ft

min. Ø 1"

1/2

3/4"

w1

w2

1-2

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 optio-

nal spray gun is fitted - also the relative fixing

screws must be removed).

2) Fit the supplied filters on the water inlet con-

nections in an accessible position.

The appliance must be supplied exclusively with

cold water conforming to the following specifi-

cations:

Internal pressure gauges must give a reading

of 100 kPa (15 PSI); if the reading is

different, correct by adjusting the pressure

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.

2

1

Spray gun

support

Water

pressure

regulator

screws

Pressure

gauges

Pressure:

between 200 and 600 kPa

(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.

Condensate drain

Connect a suitable tube to

the fitting on the conden-

sate tray and connect to

the drain pipe.

1-3

1. INSTALLATION

1.6 Electrical connection

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).

terminal board

cable gland

1-4

1.6.1 Wiring diagram

1. INSTALLATION

DRAIN

THERMOSTAT

30-90°C

ELECTRIC CABINET

TERMINAL BOARD

F2 1A

F1 1A

F3 20A

F4 20A

F5 20A

LAMP LAMP LAMP LAMP

RIGHT PANEL

FULL

SPEED

CONTACTOR

UPPER

MOTOR

LOWER

MOTOR

HALF

SPEED

CONTACTOR

LOWER

SECURITY

CONTACTOR

UPPER

SECURITY

CONTACTOR

LOWER

H.ELEMENT

CONTACTOR

UPPER

H.ELEMENT

CONTACTOR

LEFT PANEL

LOWER

CHAMBER PRESS.

UPPER

CHAMBER PRESS.

UPPER

DRAIN PRESS.

UPPER SECURITY

CONTACTOR

LOWER

SECURITY

CONTACTOR

HALF SPEED

UPPER MOTOR

OVERLOAD RELAY

FULL SPEED

UPPER MOTOR

CONTACTOR

UPPER

H.ELEMENT

CONTACTOR

LOWER

H.ELEMENT

CONTACTOR

LOWER

SPEED

MOTOR

CONTACTOR

FULL

SPEED

MOTOR

CONTACTOR

UPPER DRAIN

LOWER DRAIN

UPPER CHAMBER

LOWER CHAMBER

DOOR

MICRO-

SWITCH

SAFETY THERMOSTAT

LOWER CHAMBER

HALF SPEED

UPPER MOTOR

UPPER

MOTOR

LOWER

MOTOR

FILTER

LC

LOWER

MOTOR

SAFETY THERMOSTAT

UPPER CHAMBER

STB CAMERA

MICRO DOOR

ELECTRONIC BOARD

UPPER

MOTOR

FULL SPEED LOWER

MOTOR CONTACTOR

HALF SPEED LOWER

MOTOR OVERLOAD RELAY

FULL SPEED

LOWER MOTOR

OVERLOAD RELAY

UPPER SMALL

UPPER LARGE

LOWER SMALL

LOWER LARGE

LOWER

MOTOR

ELECTRIC CABINET

DRAIN

PROBE

UPPER

CHAMBER

PROBE

LOWER

CHAMBER

PROBE

CORE

PROBE

TRANSFORMER

LCE-401DP 208/240V 3Ph

1-4

1.6.1 Wiring diagram

1. INSTALLATION

LCE-401DP 480V 3Ph

DRAIN

THERMOSTAT

30-90°C

ELECTRIC CABINET

FUSE HOLDER

TERMINAL BOARD

F1 1A

F2 1A

F3 20A

F4 20A

F5 20A

F6 2A

LAMP LAMP LAMP LAMP

RIGHT PANEL

FULL

SPEED

CONTACTOR

UPPER

MOTOR

LOWER

MOTOR

HALF

SPEED

CONTACTOR

LOWER

SECURITY

CONTACTOR

UPPER

SECURITY

CONTACTOR

LOWER

H.ELEMENT

CONTACTOR

UPPER

H.ELEMENT

CONTACTOR

LEFT PANEL

LOWER

CHAMBER PRESS.

UPPER

CHAMBER PRESS.

UPPER

DRAIN PRESS.

UPPER SECURITY

CONTACTOR

LOWER

SECURITY

CONTACTOR

HALF SPEED

UPPER MOTOR

OVERLOAD RELAY

FULL SPEED

UPPER MOTOR

CONTACTOR

UPPER

H.ELEMENT

CONTACTOR

LOWER

H.ELEMENT

CONTACTOR

LOWER

SPEED

MOTOR

CONTACTOR

FULL

SPEED

MOTOR

CONTACTOR

UPPER DRAIN

LOWER DRAIN

UPPER CHAMBER

LOWER CHAMBER

DOOR

MICRO-

SWITCH

SAFETY THERMOSTAT

LOWER CHAMBER

HALF SPEED

UPPER MOTOR

UPPER

MOTOR

LOWER

MOTOR

FILTER

LC

LOWER

MOTOR

SAFETY THERMOSTAT

UPPER CHAMBER

STB CAMERA

MICRO DOOR

ELECTRONIC BOARD

UPPER

MOTOR

FULL SPEED LOWER

MOTOR CONTACTOR

HALF SPEED LOWER

MOTOR OVERLOAD RELAY

FULL SPEED

LOWER MOTOR

OVERLOAD RELAY

UPPER

LOWER

MOTOR

ELECTRIC CABINET

DRAIN

PROBE

UPPER

CHAMBER

PROBE

LOWER

CHAMBER

PROBE

CORE

PROBE

TRANSFORMER

-

2

-

2. FEATURES

2.1 Construction details

1) Steam vent pipe

2) Adjustable foot

3) Guides for service transfer truck

4) Condensate tray drain outlet

5) Stand-by key

6) Alarms display

7) Cooking mode selection keys

8) Special function keys

9) Thermostat controls

10) Timer controls

11) Core temperature probe selector

12) Programming - memory storage section

*

13) Cooking START/ STOP key

*

only DP

1

2

3

4

6

5

7

8

9

10

11

12

13

LCE-401DP

L

1

L

2

L

3N

1

A1

A2

10

16

U1

V1

W1

U2

V2

W2

77

7

F1

F2

1B

19

LC

L

U

L

U

10 9 8 7 6 5 4 3 2

1

12

21

2223

120V

N

L

F1

F2

R1

R2

R3

R4

R5

R7

F3

18

19

20

21

22

23 24

25

26

27

28

29

30

111213

15

16

17

14

6

4

5

3

24

25

18

9

8

2

A2

A1

1 - Terminal board

1B - Fuse carrier (F 0.5 A)

2 - Heating elements

3 - Motor contactor

4 - Drain solenoid valve

5 - Water inlet solenoid valve

6 - Inlet pressure switch

7 - Lighting = 2 x 25 W

8 - Heating element contactor

9 - Door microswitch

10 - Fan motor

12 - Electronic card

16 - Motor overload cutout

18 - Safety thermostat

19 - LC filter

21 - Oven temperature probe

22 - Food temperature probe

23 - Drain temperature probe

24 - Safety contactor

25 - Backup thermostat

208V3N

240V3N

WARNING: VOLTAGE BETWEEN L1 AND N MUST BE 120V

☞

WARNING

Disconnect the electrical supply

by setting the main power switch

to OFF.

ELECTRICAL DIAGRAM

OFF

T

3. NOTES FOR CUSTOMER SERVICE1.6

3.1 Replacement of functional components and reset procedures

The above operations must be carried out by skilled and authorised personnel.

Disassemble only the specified side panels. Do not remove the rear panel.

Replacing light bulbs or the diffuser glass

- remove the rh side panel by unscrewing the relative

screws

- unscrew the screw and nut shown in the figure and

withdraw the lampholder support; replace the bulb

with a bulb of identical specifications.

- to remove the diffuser glass for replacement, unscrew

the other three nuts inside the lampholder and

withdraw the glass.

Replacing fuses

Remove the lh side panel;

- the plug-in type fuse holders are located at the side of the

terminal board; replace with rapid-acting fuses (see value on

electrical diagram).

Resetting overload cut-outs

Remove the lh side panel.

- The overload cut-out disconnects the power supply to the motor

in the presence of overheating due to overload; before pressing

the reset button, find and eliminate the cause of the overload.

Resetting the safety thermostat

The safety thermostat shuts down the oven

when internal temperature exceeds 572°F.

To restart the oven:

- Remove the lh side panel.

- Allow the oven to cool for about 10 minutes,

find and eliminate the cause of overheating

and then press the reset button.

- 3 -

INSTRUCTIONS FOR THE USER

05 II2000

39D0390

LCE-401DP

1

7

2

3

5

6

8

4

Section A.

GENERAL INSTRUCTIONS

- 1 -

1. Contents

2. Hazards in the work environment

2.1 Fire

2.2 Accidents

2.3 Electricity

2.4 Gas

3. Correct use

3.1 Working in safety

3.2 What to do in the event of a malfunction

3.3 Prolonged period of non-use

3.4 Definitive deactivation of the equipment

4. Malfunctions

4.1 Problems, causes and remedies

5. Maintenance

5.1 Maintenance contract

5.1.1 User-serviceable parts

5.2 Advice

6. Cleaning

6.1 Cleaning of appliances

6.2 Cleaning of stainless steel

6.2.1 Ordinary daily maintenance

6.2.2 Precautions during use

6.2.3 Protecting the stainless steel

7. Observance of regulations

7.1 Standards and regulations

7.2 Liability

2.1 FIRE

Curtains, cloths, chopping-boards or other wooden objects must be kept a safe

distance from hobs and other heat sources; the same applies to vessels

containing alcohol, solvents or inflammable cleaning agents, etc. The risk of

fire in a kitchen is very high.

Fires usually start in a precise point and can be prevented from spreading if

panic is avoided. Hasty reactions may worsen the situation. Never use water to

extinguish an electrical fire; first disconnect the electrical power supply then

extinguish the fire using suitable materials or fire extinguishers.

2.2 ACCIDENTS

There is also a high risk of personal injury (burns, falls) in a commercial kitchen.

Make sure the handles of pans do not protrude from the hob, and frying pans

and other fryer equipment must not be left unattended at any time. Any oil or

grease spilled on the floor must be cleaned up immediately to prevent

slipping.

2.3 ELECTRICITY

The most serious hazards associated with electricity are those of fire

and electrocution.

Follow the safety instructions below:

• Electrical installations: all installation and maintenance should be

carried out by a qualified electrician in accordance with current safety

standards. The main switch must be easily accessible. Cables, plugs

and sockets must be kept in perfect condition.

• Safety: always turn off the main switch before cleaning or any other

operation on the appliance.

Never pull on a power supply cable to unplug an appliance from a

socket.

Do not attempt to repair a damaged cable with insulating tape or other

means, have the entire cable replaced by qualified personnel.

2.4 GAS

The smell of gas is a sign of a probable leak. In this event, close the main shut-off

valve, open doors and windows, and take care not to cause any sparks or

flames.

If you cannot identify the cause of the leak, call a qualified service engineer.

A high percentage of accidents happen because the gas appliances are not

checked regularly: gas appliances are only safe if they are kept in perfect

working order (see chapter 5).

Essential safety precautions when working with gas appliances

To light a gas burner, first bring the flame near to the burner and then turn on the gas.

It is important that the gas burns properly (blue flame) and that there are no restrictions in

the flueways, as these might give rise to dangerous emissions of carbon monoxide

fumes (which are even more hazardous than mains gas, because they are odourless

and give poisoning symptoms that may be confused with harmless disorders).

We strongly recommend the installation of electronic sensors by qualified personnel.

- 2 -

2. HAZARDS IN THE WORK ENVIRONMENT

Adhere scrupulously to the instructions in Section B and do not tamper with the appliance's

safety devices, as this would invalidate any warranty and release the manufacturer from all

liability.

The equipment may be utilised only for the specific uses for which it is intended (as indicated

in Section B).

Any other use is deemed improper and thus hazardous.

THE MANUFACTURER ACCEPTS NO LIABILITY FOR ANY DAMAGE, LOSS OR INJURY

DERIVING FROM INCORRECT INSTALLATION OR USE AND IN THIS CASE DOES NOT

GUARANTEE THE CORRECT OPERATING OF THE APPLIANCE.

3.1 WORKING IN SAFETY

Not to know or to underestimate the risks deriving from the incorrect or improper use of the

appliance can be very dangerous. It is important to adopt working habits in the daily use of the

appliances:

learn the correct use of the various appliances which comprise the

installation;

after each use, always make sure that all appliances are turned off and

then close the shut-off valve and/or turn off the main switch;

do not use inflammable cleaning agents and do not leave containers with these

substances near the appliance;

the appliance is intended for professional use and must be used by qualified

personnel only!

check the correct operation of the appliance every 6 months. On type B appliances, the

fume exhaust duct must also be checked.

Inexperience, negligence or haste may cause situations of emergency which otherwise could

have been avoided. Prevention is the first rule for working in safety. Ensure that the electrical

system is perfect order and that gas appliances are inspected regularly. Always think beforehand

of what you are about to do and how to do it, and act in such a way as to ensure your own safety

and that of your colleagues.

3.2 WHAT TO DO IN THE EVENT OF A MALFUNCTION

Do not attempt any repairs yourself. Turn off the main switch, gas shut-off valves,

water taps, etc. as applicable, and call a qualified service engineer.

We strongly recommend that you contact our Service Centre in your area, which

can provide the necessary expertise and equipment, and which maintains a stock

of original replacement parts.

3.3 PROLONGED PERIODS OF NON-USE

If the appliance is not to be used for a prolonged period, close the gas shut-off valve and/or turn

off the main switch. Clean the appliance thoroughly as indicated in Section B, and protect it

from dust with a cover allowing free air circulation.

3.4 DEFINITIVE DEACTIVATION OF THE EQUIPMENT

Seek assistance from qualified personnel.

- 3 -

☞

3. CORRECT USE

- 4 -

4.1 Problems, causes and remedies

The guide below will help the User to rectify minor faults; in the event of any other problems,

contact the approved Service Centre, the only service centre authorised to repair the

appliance.

• SMELL OF GAS

This may be an occasional leak: Boiling water has extinguished a flame, but in this case the safety device

intervenes and locks the gas outlet before a dangerous gas concentration is reached in the room. Close the

gas cock and aerate the room. If this is not the cause, have the equipment checked by skilled personnel.

• THE PILOT FLAME DOES NOT IGNITE

Check that the ignition device (whether electric, piezoelectric or electronic)

functions correctly; try igniting the pilot flame with a match.

There may be air in the piping, especially after a period of non-use; in this case, repeat the ignition

operation, this time trying for a little longer.

• THE PILOT FLAME DOES NOT REMAIN LIT

The control knob is being released too soon, before the thermocouple has had time to reach operating

temperature. Repeat the ignition operation, but keep the knob pressed in for a little longer.

• THE PILOT FLAME IGNITES BUT THE BURNER REMAINS OFF

Check that thermostat control knob is turned to a temperature setting and activate the

ignition enabling device (if present).

If the gas flow is controlled by an electric or electronic system, make sure the system is

receiving electrical power (any displays or indicator lights must be lit).

• DEFECTIVE COMBUSTION (YELLOW FLAME)

This may be caused by dirt in the burner or by clogged smoke pipes. It may also be caused by

dripping condensate created by an obstruction or dirt in the flue.

Call a competent service engineer.

• MALFUNCTION OF ELECTRIC EQUIPMENT

This may be due to the absence of a supply phase (frequent tripping of the overload

cutout): check any fuses and replace if necessary.

If either the thermal-magnetic circuit breaker or residual current device (RCD) trips continuously, call an

authorised service engineer.

• PROBLEMS WITH WASHING EQUIPMENT

Poor washing results (dishwashing machine, vegetable washer, etc.) may be due

to the lack of a supply phase (see above) or to too little water pressure, in which

case a pressure boosting device must be installed. It may also be necessary to

install a water softener if white deosits are left on dishes after washing.

• INSUFFICIENT COOLING IN REFRIGERATING EQUIPMENT

This may be due to incorrect positioning (near to heat sources), or to excessive ice on

the evaporator (appliances without automatic defroster), in which case it will be

necessary to defrost manually

.

• INSUFFICIENT AIR SUCTION IN EXHAUSTING SYSTEMS

Ensure all grease filters are kept clean.

4. MALFUNCTIONS

- 5 -

5. MAINTENANCE

5.1 MAINTENANCE CONTRACT

It is advisable to have the equipment regularly checked by a qualified service

engineer so as to ensure its efficiency and to guarantee maximum working safety.

We therefore recommend that the user enters into a maintenance contract with

specialised companies capable of guaranteeing the following operations:

Maintenance of service installations

Regular inspection of appliances

Conversion operations (change of gas type or operating voltage)

Repairs.

5.1.1 User-serviceable parts

The user is only authorised to replace any deteriorated service components

(handles, removable basins, grilles, etc.). The user is not authorised to

replace functional components or to tamper with the appliance in any

way.

The parts that may be replaced by the user are explicitly listed in section 2 of

manual B together with instructions for their replacement. If this information is

missing, consult a qualified service engineer.

N.B.: intentional damage, or damage due to lack of care or

negligence or to failure to observe the prescriptions,

instructions and standards, or due to incorrect connections

or non-authorised tampering with the appliance, negate any

guarantee or liability on the part of the manufacturer.

5.2 ADVICE

Make a note of the emergency phone-number

of your qualified service engineer.

☞

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Lang LCE-401DP User manual

Lang LCE-401DP User manual

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