Lang LCG-241D, LCG-241DP Service Manual

INSTRUCTIONS FOR THE TECHNICAL EXPERT

LCG-241D & LCG-241DP

09 II1999

39D0910

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

LCG-241D LCG-241DP

Gas inlet

Flue outlet

Water inlet

Water drain

Terminal board 3 Ph

Cable gland

Equipotential terminal

The oven must be installed under a ventilation hood only.

Not suitable for connection to type B gas vent.

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

Ø 1"

/4" NPT

/4"

43.3"

15.7"

9.4"

5.7"

13.5"

2.9"

46.4"

59"

22.8"

32.6"

5.1"

14"

17.7"

35"

The cooling outlets of the control section of the oven (side panel)

must not be near sources of hot fumes or steam.

1.3"

46.4"

All clearance requirements are the same for combustible or non combustible constructions. For use only on non combustible foor.

1.3 Specifications

115.000 Btu/h

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

ELECTRICAL RATINGGAS

VOLTAGE POWER RATINGINPUT RATING MAX. LOAD (A)

208V 3 Ph 60HzNatural gas

240V 3 Ph 60HzPropane

1.1 kW

3.4 A

1.9"

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:

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 connections in an accessible position.

Spray gun support

Pressure gauges

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

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

90÷125 ppm)(5 ÷ 10° clark);

- grado di mineralizzazione tra 9 e 13 °Fr;

Max. salinity and ion content in mg/l:

- PH = da 7 a 7,5.

- chlorides < 30; sulphates < 40; Fe (iron) < 0.1; Cu

- cloruri = max. 150 mg/l

(copper) < 0.05; Mn (manganese) < 0.05.

between 200 and 600 kPa

Internal pressure gauges must give a reading

of 100 kPa (15 PSI); if the reading is different, correct by adjusting the pressure

regulators.

Water pressure regulator screws

3/4"

Water drain

min. Ø 1"

min. 5% (3°)

max. 5 ft

1/2

1-1

min. Ø 1"

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

1/2

resistant type and not flexible.

1. INSTALLATION

1.5 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 1.4.

• 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 connect the wires to the terminal board (see electrical diagram on next page).

terminal board

cable gland

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).

1-2

1.5.1 Wiring diagram

1-3

SAFETY

THERMOSTAT

WATER DRAIN

WATER INLET

SOLENOID VALVE

20 13

-T2

0 120

3a3

-Q3

-Y1

EVS

SOLENOID VALVE

-Y2

EVC

CONTACTOR

240

-M1

FAN MOTOR

-Q1 -Q2

38 37 36

-K1

ELECTRIC IGNITION

MOTOR

U1 V1 W1

U2 V2 W2

56 57 58 59 60 61

969598

12345

12345621

-K2 -K3

SLOW SPEED

12345

12345621

28 28

25 26 27

-EY3

-K4

PANEL DX

-E2

73 72 71

LAMP

1. INSTALLATION

-S1

U1 U2

FC FILTER

L1 L2

16 15

-N2

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

STB CHAMBER

DOOR SWITCH

1234567891011121314151617

-N1

ELECTRONIC BOARD 240VAC

DRAIN

CHAMBER

PROBE

18 19 20 21 22 23 24 25 26

-E3 -E4

ELECTRIC CABINET PANEL SX

CORE

PROBE

WATER INLET PRESSURESWITCH

27 28 29 30

41 63 55 54

DRAIN PRESSURE

SWITCH

-K6-K5

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

SAFETY

THERMOSTAT

-Q3

THERMOCOUPLE

GAS

SOLENOID VALVE

EVG1

EVG2

-K7

IGNITION

PUSHBUTTON

DOOR MICRO-SWITCH

-Y3

969598

FAST

SPEED

ELECTRIC CABINET

-H1-H2-H3

LAMP

-E1

49 50 51

12345621

-X1

69 70

024

-T1

TRANSFORMER

3131

0 240

F1 1A

F2 1A

F3 0.5A

F6 0.032A

FUSE HOLDER

POWER SUPPLY

TERMINAL BOARD

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.

1-4

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