Lang LCG-241D User manual

INSTRUCTIONS FOR THE TECHNICAL EXPERT

09 II1999

39D0910

LCG-241D & LCG-241DP

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"

32.6"

2.9"

5.1"

9.4"

5.7"

13.5"

14"

17.7"

35"

2"

1.3"

1.9"

43.3"

15.7"

59"

46.4"

22.8"

3.4 A

1.1 kW

3.4 A

1.1 kW

115.000 Btu/h

1. INSTALLATION

LCG-241D

LCG-241DP

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.

Ø

3

/

4

" NPT

Gas inlet

Cable gland

Equipotential terminal

Flue outlet

*

Terminal board 3 Ph

Water inlet

Water drain

Ø 1"

1

/

2

Ø

3

/

4

"

*

The oven must be installed under a ventilation hood only.

Not suitable for connection to type B gas vent.

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

ELECTRICAL RATINGGAS

VOLTAGE POWER RATINGINPUT RATING MAX. LOAD (A)

208V 3 Ph 60HzNatural gas

240V 3 Ph 60HzPropane

min. Ø 1"

1/2

min. 5% (3°)

max. 5 ft

min. Ø 1"

1/2

3/4"

1-1

1. INSTALLATION

1.4 Installation - procedure

Fit the following units on

the top of the oven:

1)

Flue outlet

2) Steam vent pipe

Connecting the water

supply

3) 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).

4) 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:

- pressione tra 200 e 600 kPa (2 ÷ 6 bar);

- grado di mineralizzazione tra 9 e 13 °Fr;

- PH = da 7 a 7,5.

- cloruri = max. 150 mg/l

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.

32

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: from 9 to 13 °f (= 5÷7 °d = 6,3÷8,8 °e =

90÷125 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.

4

1-2

1. INSTALLATION

1.5 Electrical connection

Equipotential connection

• The equipotential terminal ( ) is located

beneath the appliance at the rear lh cor-

ner.

Mains connection

• Remove the lh side panel as indicated in

heading 1.4.

• 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 con-

nect 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

1-3

1.5.1 Wiring diagram

1. INSTALLATION

LCG-241D/DP 208/240V 3Ph

F3

LN

R7

F1

R4

R5

R3

F2

R2

R1

18 19 20 21 22 23 24 25 26

M

3~

1234567891011121314151617

27 28 29 30

MOTOR

CONTACTOR

1

2

3

4

5

6

21

22

EVC

EVS

-X1

SLOW

SPEED

1

2

3

4

5

6

21

22

FAST

SPEED

1

2

3

4

5

6

21

22

SAFETY

THERMOSTAT

SAFETY

THERMOSTAT

P3

3a3

ELECTRIC CABINET

U1 V1 W1

U2 V2 W2

U1 U2

L1 L2

PE

DRAIN

PRESSURE

SWITCH

C

PS

WATER INLET

PRESSURESWITCH

C

PC

1

42

96

95

98

97

1

2

3

4

5

6

96

95

98

97

1

2

3

4

5

6

ELECTRIC CABINET PANEL SX

41 63 55 54

42

3

65

2

73 72 71

75

16 15

64 65 45 46 32 52 23 22 21 47 19 18

68

7

8

9

66

25 26 27

28 28

28

3131

40

11

49 50 51

56 57 58 59 60 61

53

62

39

14

48

24

38 37 36

44

43

76

12

95

4

1

EVG1

EVG2

P1

P2

1

P1

L

N

20 13

35

87

69 70

LAMP

PE

LAMP

PE

LAMP

PE

PANEL DX

74

F6 0.032A

34

77

78

67

-N1

A2

A1

F2 1A

A2

A1

A2

A1

F1 1A

PE

F3 0.5A

-K7

024

0 240

240

0 120

0

-K1

-Y2

-Y1

L1

L2

L3

-K2 -K3

-Q3

-E1

PE

-M1

-N2

-K6-K5

-S1

-Q1 -Q2

-E3 -E4

-Q3

-Y3

-K4

-T1

-H1-H2-H3

-E2

-T2

-EY3

FAN

MOTOR

WATER DRAIN

SOLENOID VALVE

WATER INLET

SOLENOID VALVE

POWER SUPPLY

TERMINAL BOARD

FUSE HOLDER

ELECTRONIC BOARD 240VAC

DRAIN

PROBE

CHAMBER

PROBE

CORE

PROBE

STB CHAMBER

DOOR SWITCH

FC FILTER

DOOR

MICRO-SWITCH

THERMOCOUPLE

GAS

SOLENOID

VALVE

IGNITION

PUSHBUTTON

TRANSFORMER

ELECTRIC IGNITION

1-4

1. INSTALLATION

1.6 Heat baffle

Fit the baffle to the oven base: secure it to the

rear by engaging the locking pin, and to the

front by means of a screw after inserting the

bracket flange in the slot on the internal fold of

the front panel.

-

2

-

9

8

10

11

12

13

14

15

16

2. FEATURES

2.1 Construction details

1) Flue outlet

2) Steam vent pipe

3) Adjustable foot

4) Drip tray

5) Ignition position

6) Burner start enable position

7) Stop position

8) Stand-by key

9) Alarms display

10) Cooking mode selection keys

11) Special function keys

12) Thermostat controls

13) Timer controls

14) Core temperature probe selector

15) Programming - memory storage section

*

16) Cooking START/ STOP key

*

only DP

LCG-241D

LCG-241DP

2

1

3

4

O

F

P

I

L

O

T

O

N

it

7

5

6

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 -

☞

4. STARTING

4.1 Operating gas

Check the data plate

to make sure the

appliance has been

tested for the type of

gas available.

4.2 Gas pressure check

Close the main gas valve!

- open the door placed;

- remove cap screw of the pressure test point and connect a

pressure gauge to this outlet;

- open the main gas valve and turn on the appliance at

maximum capacity (see "Starting");

- make sure the pressure lies within the limits indicated in the

table below.

After this check, remove the pressure gauge and close the pressure test point!

230V1N 50 Hz 400 W

Mod FCV61DM XXXXXXXXX

Mat

XXXXXXXXXX

Cat

G20-20 mbar 20 mbar 11 kW 1,16 m

3

/h

G31-50 mbar 50 mbar 11 kW 0,85 kg/h

G30-50 mbar 50 mbar 11 kW 0,87 kg/h

G25-20 mbar 20 mbar 11 kW 1,16 m

3

/h

G110-8 mbar 5,5 mbar 11 kW 2,84 m

3

/h

400V3N 50 Hz 400 W

G120-8 mbar 5,5 mbar 11 kW 2,53 m

3

/h

G140-8 mbar 5,5 mbar 11 kW 2,96 m

3

/h

OFF

GAS

50

48

46

44

40

38

36

Gas type

Pressure in Inches Water Column

natural gas

propane

7" 4" 10"

11" 8" 13"

rated minim. maxim.

- 4 -

GAS

STOP

OFF

GAS

4. STARTING

4.3 Controls

4.4 Safety devices

A thermocouple device locks the gas outlet in case the flame is

extinguished. A further safety thermostat is released in case the oven is

overheated.

4.5 Pilot flame ignition

Press the control knob and turn it to the PILOT position. Press the knob

and light the pilot flame keeping the knob fully pressed for a few seconds.

Release the knob and check that the pilot flame stays on. If it goes out

repeat the lighting operations.

4.6 Ignition the main burner

Press the control knob and turn it to the ON position. The gas way to the

main burner is opened by powering the automatic shut-off valve.

4.7 Stand-by position

To maintain the main burner off with the pilot burner on, press and turn

the control knob to the PILOT position.

4.8 Turning off

Press and turn the control knob to the OFF position.

WARNING: WHEN YOU HAVE FINISHED USING THE OVEN,

CLOSE THE MAIN GAS SUPPLY VALVE AND SWITCH OFF THE

MAIN POWER SWITCH FOR AT LEAST FIVE MINUTES BEFORE

RELIGHTING.

IN LOWER COMPARTMENT

BURNER IGNITION CONSENT

MARK OF REFERENCE

O

F

P

I

L

O

T

O

N

it

O

F

P

I

L

O

T

O

N

- 4-1 -

INSTRUCTIONS FOR THE USER

09 II1999

39D0910

LCG-241D & LCG-241DP

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

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