Lang LCG-61M Service Manual

INSTRUCTIONS FOR THE TECHNICAL EXPERT

LCG-61M

09 II1999

39D0880

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-61M
LCG-61D

Gas inlet

Flue outlet

Water inlet

Water drain

Terminal board 1 Ph / 3 Ph

Cable gland

Equipotential terminal

Ø

Ø

Ø 1"

3

/4" NPT

*

3

/4"

1

/

2

27.3"

3.9−4.1"

18.1"

5.9-7"

37.4"

35.4"

TB610

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

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

must not be near sources of
hot fumes or steam.

WARNING: The oven must be installed on the open stand TB610 only.

3.8"

4.5"

12.4"

2.9"

2"

1.3"

23.3"

37.4"

5.1"

4.3"

13.7"

29.1"

1.9"

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)

ELECTRICAL RATINGGAS

VOLTAGE POWER RATINGINPUT RATING MAX. LOAD (A)

Natural gas 45.000 Btu/h

Propane 45.000 Btu/h

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

120V 1 Ph 60Hz
208V 3 Ph 60Hz
240V 3 Ph 60Hz

- 1 -

0.5 kW

0.9 kW

0.9 kW

4.3 A

3.0 A

3.0 A

1. INSTALLATION

1.4 Installation - procedure

Fit the following units on the
top of the oven:

1) Flue outlet

2) Steam vent

Water connection

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 support
screw must be
removed).

1

2

3

Spray gun
support screw

4) Install the filter supplied with the unit in an accessi­ble position on the water inlet, as shown in the

4

examples below:
a) installation on TB610 frame (optional) or other

support not protruding beyond the perimeter
marked by the feet;

b) installation on other support of larger dimen­sions.

The appliance must be supplied exclusively with cold

water conforming to the following specifications:

Pressure:

(30 - 80 PSI)

between 200 and 600 kPa

;

pH: from 7 to 7.5;
Conductivity: less than 200 µS/cm;

t.d.s. < 100 ppm
Hardness:

90 ...125 ppm)

from 6.3 to 8.8 °e (5...7 °d, 9 ...13 °f, or

(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.

Pressure
gauge

Water
pressure
regulator
screw

3/4"

The internal pressure gauge must show a
pressure of 100 kPa (15 PSI); if it shows
a different value, adjust to the correct
pressure by means of the pressure regulator
screw.

a

min. Ø 1"

min. 5% (3°)

max. 5 ft

1/2

1-1

min. Ø 1"

b

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

1/2

drainage pipe must be heat

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. INSTALLATION

ELECTRIC PANEL

1-3

THERMOCOUPLE

SAFETY THERMOSTAT

GAS
SOLENOID
VALVE

TRANSFORMER

FAN
MOTOR

IGNITION PUSHBUTTON

MOTOR
THERMAL
CUT-OUT

MOTOR
CONTACTOR

WATER DRAIN
SOLENOID VALVE

PRESSURE
SWITCH

WATER INLET
SOLENOID
VALVE

DOOR
MICRO-SWITCH

ELECTRIC IGNITION

NR. 2

HOUSINGS 6-WAYS

120V

ALARM
MOTOR ALARM
WATER ALARM

CIRCUIT BOARD

SELECTOR SWITCH

122-482°F
THERMOSTAT
OVEN

SAFETY
THERMOSTAT

86-194°F
THERMOSTAT
DRAIN

ELECTRIC PANEL

CONTROL PANEL

PANEL DX

PANEL SX

ELECTRIC
CABINET

LAMP LAMP LAMP

POWER SUPPLY
TERMINAL BOARD

F1 1A

F2 1A

LCG-61M 120V 1Ph

F4 6.3A-T

F3 0.5A

FUSE HOLDER

TIMER 120'

BUZZER

1.5.1 Wiring diagram

THERMOCOUPLE

FAN
MOTOR

WATER DRAIN
SOLENOID VALVE

PRESSURE
SWITCH

ELECTRIC PANEL

208/240V

ALARM
MOTOR ALARM
WATER ALARM

CIRCUIT BOARD

1. INSTALLATION

1-3

SAFETY THERMOSTAT

ELECTRIC PANEL

CONTROL PANEL

GAS
SOLENOID
VALVE

TRANSFORMER

PANEL SX

IGNITION PUSHBUTTON

ELECTRIC
CABINET

MOTOR
THERMAL
CUT-OUT

MOTOR
CONTACTOR

POWER SUPPLY
TERMINAL BOARD

F1 1A

F2 1A

F3 0.5A

F4 6.3A-T

F5 6.3A-T

F6 0.032A

WATER INLET
SOLENOID
VALVE

FUSE HOLDER

DOOR
MICRO-SWITCH

ELECTRIC
IGNITION

NR. 2

HOUSINGS 6-WAYS

SELECTOR SWITCH

TIMER 120'

122-482°F
THERMOSTAT
OVEN

SAFETY
THERMOSTAT

86-194°F
THERMOSTAT
DRAIN

BUZZER

PANEL DX

LAMP LAMP LAMP

LCG-61M 208/240V 3Ph