Lang LCG-241M Service Manual

4.5 (2)

INSTRUCTIONS FOR THE TECHNICAL EXPERT

LCG-241M

09

1999

 

II

 

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

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

12 3

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.

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 National Electrical Code, ANSI/NFPA 70, or the Canadian Electrical

Code, CSA C22.1-.2.

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.

XXXXXXXXXX

 

 

0000

 

 

 

 

0000000000000000000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

208V3 ~

 

A

 

Hz

 

kW

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check the current absorption indicated on the data plate to determine the crosssectional 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.

- 2 -

1. INSTALLATION

1.1 Connections

 

LCG-241M

46.4"

LCG-241D

 

Gas inlet

Ø 3/4" NPT

 

Flue outlet

*

 

 

 

Water inlet

Ø 3/4"

59"

 

43.3"

Water drain

Ø 1" 1/2

 

Terminal board

3 Ph

 

 

 

22.

Cable gland

15.7"

 

 

 

Equipotential terminal

 

*

The oven must be installed under a ventilation hood only.

 

32.6"

2.9"

5.1"

 

 

 

 

 

Not suitable for connection to type B gas vent.

 

 

 

1.2

Positioning

9.4"

 

 

5.7"

 

14"

 

leave at least 4" clearance

 

17.7"

 

 

 

35"

 

 

between the rear of the appliance and the

13.5"

 

 

 

 

 

 

 

wall

 

 

 

 

• leave at least 20" clearance at the

 

 

 

 

 

sides of the appliance

 

 

 

 

 

 

2"

1.3"

1.9"

 

 

 

 

 

46.4"

 

 

The cooling outlets of the control

 

 

 

 

 

section of the oven (side panel)

 

 

 

 

 

must not be near sources of

 

 

 

 

 

hot fumes or steam.

 

 

 

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

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

GAS

 

 

 

 

ELECTRICAL RATING

 

INPUT RATING

 

VOLTAGE

 

 

POWER RATING

 

MAX. LOAD (A)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Natural gas

115.000

Btu/h

208V

3 Ph

60Hz

 

1.1 kW

 

3.4 A

 

 

 

 

 

 

 

 

 

 

Propane

115.000

Btu/h

240V

3 Ph

60Hz

 

1.1 kW

 

3.4 A

 

 

 

 

 

 

 

 

 

 

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

- 1 -

1. INSTALLATION

1.4 Installation - procedure

Fit the following units on

 

 

 

 

 

2

1

 

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 connections in an accessible position.

The appliance must be supplied exclusively with cold water conforming to the following specifications:

Pressure: between 200 and 600 kPa

 

 

(30 80 PSI);

 

 

pH: from 7 to 7.5;

 

 

Conductivity: less than 200 S/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);

 

°Fr;

- grado di mineralizzazione tra 9 e 13

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.

 

 

 

 

Internal pressure gauges must give a reading of 100 kPa (15 PSI); if the reading is different, correct by adjusting the pressure regulators.

min. Ø 1" 1/2

min. 5% (3°)

max. 5 ft

3

Spray gun support

4

Pressure gauges

Water pressure regulator screws

3/4"

 

 

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

min. Ø 1"

1/2

drainage pipe must be heat

resistant type

and

not

 

 

flexible.

1-1

1.INSTALLATION

1.5Electrical 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

Lang LCG-241M Service Manual

1.5.1 Wiring diagram

 

 

 

 

 

 

 

 

 

 

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ELECTRIC PANEL

 

 

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208/240V

 

 

 

 

 

 

 

 

 

 

 

 

ALARM

 

 

 

 

 

 

 

 

 

 

 

 

MOTOR ALARM

 

 

 

 

 

 

 

 

 

WATER DRAIN

 

 

WATER ALARM

 

 

 

 

 

 

 

 

 

PRESSURE

 

 

 

 

 

 

 

 

FAN

 

 

SOLENOID VALVE

SWITCH

 

 

 

 

 

 

 

 

MOTOR

 

 

 

 

 

 

 

 

THERMOCOUPLE

 

 

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CIRCUIT BOARD

 

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GAS

 

 

 

 

 

WATER INLET

 

 

 

 

SOLENOID

 

 

 

 

 

 

 

 

 

 

 

 

SOLENOID

 

 

 

 

VALVE

 

 

 

 

 

 

 

SAFETY

 

 

 

 

 

 

VALVE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DOOR

 

 

THERMOSTAT

 

 

 

MOTOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MICRO-SWITCH

 

 

 

 

 

 

 

 

 

THERMAL

 

 

 

 

 

 

 

 

 

 

 

 

 

CUT-OUT

 

 

 

 

 

 

 

 

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ELECTRIC

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IGNITION

SELECTOR SWITCH

 

 

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MOTOR

 

 

 

 

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122-482°F

86-194°F

 

 

 

 

 

 

 

 

 

THERMOSTAT

THERMOSTAT

 

 

 

 

 

CONTACTOR

 

 

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OVEN

DRAIN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TRANSFORMER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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<![endif]>F3 0.5A F4 6.3A-T F5 6.3A-T F6 0.032A FUSE HOLDER

 

 

TIMER 120'

BUZZER

 

ELECTRIC PANEL

PANEL SX

 

 

POWER SUPPLY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TERMINAL BOARD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ELECTRIC

 

 

 

 

 

 

 

 

 

CONTROL PANEL

 

 

CABINET

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PANEL DX

LAMP

LAMP

 

LAMP

 

 

 

 

 

 

 

 

 

 

 

 

 

LCG-241M

 

 

208/240V 3Ph

 

 

 

 

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