Cobra CR6, CR9 Operation Manual

230636-10

For use in GB & IE

Static Oven Range

Models:

CR6

(600 mm)

CR9

(900 mm)

INSTALLATION AND OPERATION MANUAL

The reproduction or copying of any part of this manual by any means whatsoever is strictly forbidden unless authorized
previously in writing by the manufacturer.

In line with policy to continually develop and improve its products, Moffat Ltd. reserves the right to change the
specifications and design without prior notice.

© Copyright Moffat Ltd. August 2011.

MANUFACTURED BY

Moffat Limited

Christchurch
New Zealand

INTERNATIONAL CONTACTS

AUSTRALIA

Moffat Pty Limited
E.Mail: [e-mail]
Main Office: (tel): [phone]

(fax): [phone]

Service: (tel): 1800 622 216
Spares: (tel): 1800 337 963
Customer Service: (tel): 1800 335 315
(fax): 1800 350 281

CANADA

Serve Canada
Web: www.servecanada.com
E.Mail: [e-mail]
Sales: (tel): 800 551 8795 (Toll Free)
Service: (tel): 800 263 1455 (Toll Free)

NEW ZEALAND

Moffat Limited
Web: www.moffat.co.nz
E.Mail: [e-mail]
Main Office: (tel): 0800 663328

UNITED KINGDOM

Blue Seal
Web: www.blue-seal.co.uk
E.Mail: [e-mail]
Sales: (tel): [phone]

(fax): [phone]
Spares: (tel): [phone]
(fax): [phone]
Service: (tel): [phone]
(fax): [phone]

UNITED STATES

Moffat
Web: www.moffat.com
Sales: (tel): 800 551 8795 (Toll Free)

(tel): [phone]
(fax): [phone]
Service: (tel): 800 858 4477 (Toll Free)
(tel): [phone]
(fax): [phone]

REST OF WORLD

Moffat Limited
Web: www.moffat.co.nz
E.Mail: [e-mail]

1

Contents

CR6 Gas Static Oven Ranges (600 mm Wide).

CR9 Gas Static Oven Ranges (900 mm Wide).

Part 1 Introduction ..................................................................................... 2

Part 2 Specifications .................................................................................. 3

Part 3 Installation ........................................................................................ 5

Part 4 Operation ......................................................................................... 8

Part 5 Cleaning and Maintenance......................................................... 11

Part 6 Gas Conversion .............................................................................14

Part 7 Replacement Parts List .................................................................. 20

We are confident that you will be delighted with your Cobra Series Ranges, and it will become a most
valued appliance in your commercial kitchen.

To ensure you receive the utmost benefit from your new Cobra Series Appliance, there are two important
things you can do.

Firstly:

Please read this instruction book carefully and follow the directions given. The time taken will be well
spent.

Secondly:

If you are unsure of any aspect of the installation, instructions or performance of your appliance,
contact your Cobra Series Range dealer promptly. In many cases a phone call could answer your
question.

CE Only:

These instructions are only valid if the country code appears on the appliance. If the code does not
appear on the appliance, refer to the supplier of this appliance to obtain the technical instructions for
adapting the appliance to the conditions for use in that country.

WARNING:

I

MPROPER INSTALLATION, ADJUSTMENT, ALTERATION, SERVICE OR MAINTENANCE CAN CAUSE PROPERTY DAMAGE, INJURY OR DEATH.

READ THE INSTALLATION, OPERATING AND MAINTENANCE INSTRUCTIONS THOROUGHLY BEFORE INSTALLING OR SERVICING THIS

APPLIANCE.

WARNING:

INSTRUCTIONS TO BE FOLLOWED IN THE EVENT THE USER SMELLS GAS ARE TO BE POSTED IN A PROMINENT LOCATION. THIS INFORMATION
SHALL BE OBTAINED BY CONSULTING THE LOCAL GAS SUPPLIER.

WARNING:

G

REAT CARE MUST BE TAKEN BY THE OPERATOR TO USE THE EQUIPMENT SAFELY TO GUARD IT AGAINST RISK OF FIRE.

 THE APPLIANCE MUST NOT BE LEFT ON UNATTENDED.
 IT IS RECOMMENDED THAT A REGULAR INSPECTION IS MADE BY A COMPETENT SERVICEMAN TO ENSURE CORRECT AND SAFE

OPERATION OF YOUR APPLIANCE IS MAINTAINED.

 DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPOURS OR LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER

APPLIANCE.

 DO NOT SPRAY AEROSOLS IN THE VICINITY OF THIS APPLIANCE WHILE IT IS IN OPERATION.

C

AUTION

:

This appliance is;



For professional use and is to be used by qualified persons only.



Only qualified service persons are to carry out installation, servicing and gas
conversion operations.



Components having adjustments protected (e.g. paint sealed) by the manufacturer
should not be adjusted by the user / operator.



DO NOT operate the appliance without the legs supplied fitted.

Part 1 Introduction

3

The CR6 Oven is a 490 mm (internal) full width oven

fitted with French style opening doors. The oven
burner is a 24-26 MJ oven burner and has pilot and
flame failure with piezo ignition.

The CR9 Oven is a 780 mm (internal) full width oven
fitted with French style opening doors. The oven
burner is a 28-30 MJ oven burner and has pilot and
flame failure with piezo ignition.

The Range has an easy clean stainless steel external
finish.

Part 2 Specifications

Model Covered in this Specification -

CR6D[1] Range 4 Open Burners.
CR6C[1] Range 2 Burners + 300 mm Griddle.
CR6B Range 600 mm Griddle.

CR9D[1] Range 6 Open Burners.
CR9C[1] Range 4 Burners + 300 mm Griddle.
CR9B[1] Range 2 Burners + 600 mm Griddle.
CR9A Range 900 mm Griddle.

[1] - Open Burner Options;

F - With Flame Failure Protection.

- Standard Burners.

General

A heavy duty, general purpose gas range created
for compact modular kitchens and available in a
600mm and 900mm wide option. It has a high
option Cooktop / Griddle arrangement and is
available on adjustable front feet and robust rear
rollers. Open Burners have Flame Failure Option as
standard for UK market and as an option for all
other markets.

Griddles are available in 300 mm, 600 mm and for
the CR9 Gas Static Oven Range, 900 mm options
and are fitted with pilot, flame failure and piezo
ignition as standard.

Gas Supply Requirements

- Non - UK Only:

Natural Gas (G20) Propane (G31)

Griddle

(each 300 mm

section)

Oven Open

Burner

(each)

Griddle

(each 300 mm

section)

Oven

CR6 CR9 CR6 CR9

Heat Input

(nett)

Nominal

5.0 kW 5.0 kW 6.5 kW 7.5 kW 4.6 kW 5.0 kW 6.0 kW 7.5 kW

Reduced

1.7 kW 1.5 kW 1.1 kW 2.2 kW 1.5 kW 2.2 kW 1.05 kW 2.3 kW

Gas Rate

(nett)

Nominal

0.53 m3/hr 0.53 m3/hr 0.51 m3/hr 0.79 m3/hr 0.36 kg/hr 0.39 kg/hr 0.47 kg/hr 0.58 kg/hr

Reduced

0.18 m3/hr 0.16 m3/hr 0.14 m3/hr 0.23 m3/hr 0.12 kg/hr 0.17 kg/hr 0.09 kg/hr 0.18 kg/hr

Supply Pressure

20 mbar 37 mbar

Operating Pressure

10 mbar (*) 28 mbar (*)

Gas Connection

3

/4” B.S.P. Male

Open

Burner

(each)

NOTE:

(*) The burner operating pressure is to be measured at the manifold test point with two burners operating at

full setting. The operating pressure is ex-factory set, through the appliance regulator and is not to be
adjusted, apart from when carrying out gas conversion, if required. (Refer to the ‘Gas Conversion’
Instruction Sheet for this appliance for further details).

Natural Gas LP Gas (Propane)

Open Burner

(each)

Griddle

(each 300 mm

section)

Open Burner

(each)

Griddle

(each 300 mm

section)

Oven

CR6 CR9 CR6 CR9

Input Rate
(N.H.G.C.)

22 MJ/hr 20 MJ/hr 24 MJ/hr 28 MJ/hr 22 MJ/hr 20 MJ/hr 24 MJ/hr 28 MJ/hr

Supply Pressure

1.13 - 3.40 kPa

(4.5” -13.5” w.c.)

2.75 - 4.50 kPa

(11” -18.0”w.c.)

Burner Operating
Pressure

1.0 kPa (*)
(4.0” w.c.)

2.6 kPa (*)

(10.0” w.c.)

Gas Connection

¾” BSP Male

Oven

4

Part 2 Specifications

Gas Connection

CR6 Model

Gas supply connection point is located at the rear
of the appliance, approximately 130 mm from the
right hand side, 45 mm from the rear and 655 mm
from the floor and is reached from beneath the
appliance. (Refer to the ‘Dimensions’ below).

For all Appliance Options, gas connection is

3

/4” BSP

male.

Dimensions

CR6 Model

CR9A Model CR9B Model

CR9C Model CR9D Model

CR9 Model

Gas supply connection point is located at the rear
of the appliance, approximately 130 mm from the
right hand side, 20 mm from the rear and 655 mm
from the floor and is reached from beneath the
appliance. (Refer to the ‘Dimensions’ below).

For all Appliance Options, gas connection is

3

/4” BSP

male.

CR9 Model

CR6B Model CR6C Model

CR6D Model

- Cooktop Model Options

5

Location

1. This appliance must be installed in a suitably
ventilated room to prevent dangerous build up
of combustion products.

2. Installation must allow for a sufficient flow of
fresh air for the combustion air supply.

Combustion Air Requirements

Natural Gas 41 m³/hr minimum.
LPG / Propane 43 m³/hr minimum.

3. Never directly connect a ventilation system to

the appliance flue outlet.

4. Position the appliance in its approximate

working position.

5. All air for burner combustion is supplied from

underneath the appliance. The legs must
always be fitted and no obstructions placed on
the underside or around the base of the
appliance, as obstructions will cause incorrect
operation and / or failure of the appliance.

6. Components having adjustments protected

(e.g. paint sealed) by manufacturer are only
allowed to be adjusted by a qualified service
agent. They are not to be adjusted by the
installation person.

NOTE:
Do not obstruct or block the appliances flue. Never
directly connect a ventilation system to the
appliance flue outlet.

Clearances

NOTE:
Only non-combustible materials can be used in
close proximity to this appliance.

Any gas burning appliance requires adequate
clearance and ventilation for optimum and trouble
free operation. The following minimum installation
clearances are to be adhered to:

* Side clearances can be 50 mm when the

adjacent surface is at least 100 mm below the
cooking surface.

Part 3 Installation

Installation Requirements

NOTE:
It is most important that this appliance is installed
correctly and that operation is correct before use.
Installation shall comply with local, gas and health
and safety requirements.

This appliance shall be installed with sufficient
ventilation to prevent the occurrence of
unacceptable concentrations of health harmful
substances in the room that the appliance is
installed in.

Cobra Series Ranges are designed to provide years
of satisfactory service and correct installation is
essential to achieve the best performance,
efficiency and trouble-free operation.

This appliance must be installed in accordance with
National installation codes and in addition, in
accordance with relevant National / Local codes
covering gas and fire safety.

Australia:

AS 5601- Gas Installations.

New Zealand:

NZS 5261- Gas Installation.

United Kingdom:

Gas Safety (Installation and Use) Regulations

1998.

BS6173 - Installation of Catering Appliances.

BS5440 1 & 2 - Installation Flueing & Ventilation.

Ireland:

IS 820 - Non Domestic Gas Installations.

Installations must be carried out by qualified service
persons only. Failure to install equipment to the
relevant codes and manufacturer’s specifications
shown in this section will void the warranty.

Components having adjustments protected (e.g.
paint sealed) by manufacturer, are only allowed to
be adjusted by an qualified service agent. They are
not to be adjusted by the installation person.

Unpacking

 Remove all packaging and transit protection

from the appliance including all protective
plastic coating from the exterior stainless steel
panels.

 Check equipment and parts for damage.

Report any damage immediately to the carrier
and distributor.

 Report any deficiencies to the distributor who

supplied the appliance.

 Check that the available gas supply is correct to

that shown on the rating plate located on the
front lower corner of the R/H side panel.

Combustible

Surface

Non Combustible

Surface

LH / RH

Side

250 mm (*) 0 mm

Rear 100 mm 0 mm

6

The regulator outlet pressure is fixed ex-factory for
the gas type that the regulator is converted to and it
is NOT to be adjusted

.

The regulator connections are

3

/4” BSP female.

The connection to the appliance is

3

/4” BSP male.

(Refer to the 'Specifications' Section for the gas
supply location dimensions).

NOTE:
A Manual Isolation Valve must be fitted to the
individual appliance supply line.

4. Correctly locate the appliance into its final

operating position and using a spirit level, adjust
the legs so that the appliance is level and at the
correct height.

5. Connect the gas supply to the appliance. A

suitable joining compound which resists the
breakdown action of LPG must be used on
every gas line connection, unless compression
fittings are used.

6. Check all gas connections for leakages using

soapy water or other gas detecting equipment.

7. Check that the gas supply pressure is as shown in

the ‘Specifications’ section, ‘Gas Supply
Requirements’.

NOTE:
The supply pressure to be measured at the
manifold test point and with 2 burners

operating at

the ‘High Flame’ setting.

8. Light the Main Burners. Refer to the 'Operations’

Section', ‘Open Burners’.

9. Verify that the supply pressure is still correct.

10. Check that the Main Burner is alight and adjust

the low fire adjustment screw on the open
burner gas control valves to obtain the desired
flame size.

11. Check / adjust the main burner aeration gap.

This gap should be set to the dimensions shown
in the 'Gas Specification Tables' in ‘Part 6 - Gas
Conversion’.

NOTE:
This appliance is fitted with adjustable feet to enable
the appliance to be positioned securely and level.
This should be carried out on completion of the gas
connection.

Part 3 Installation

Assembly

This model is delivered completely assembled.
Ensure that the legs and rollers are securely
attached.

NOTE:
This appliance is fitted with adjustable feet to enable
the appliance to be positioned securely and level.
This should be carried out on completion of the gas
connection. Refer to the 'Gas Connection' section.

Gas Connection

NOTE:
ALL GAS FITTING MUST ONLY BE CARRIED OUT BY A
QUALIFIED SERVICE PERSON.

1. Cobra Oven Ranges do not require an electrical
connection, they function totally on the gas
supply only.

2. It is essential that the gas supply is correct for the
appliance to be installed and that adequate
supply pressure and volume are available. The
following checks should therefore be made
before installation:-

a. The Gas Type the appliance has been

supplied for is shown on coloured stickers
located above the gas entry point and next
to the rating plate. Check that this is correct
for the gas supply the appliance is being
installed for. The gas conversion procedure is
detailed in the Gas Conversion Instruction
Sheet for this appliance.

b. Supply Pressure required for this appliance is

shown in the 'Specifications' section of this
manual. Check the gas supply to ensure that
adequate supply pressure exists.

c. Input Rate of this appliance is also stated on

the Rating Plate rating plate located on the
front lower corner of the R/H side panel, and
in the 'Specifications' section of this manual.
The input rate should be checked against the
available gas supply line capacity. Particular

note should be taken if the appliance is
being added to an existing installation.

NOTE:
It is important that adequately sized piping runs
directly to the connection joint on the appliance,
with as few tees and elbows as possible to give
maximum supply volume.

3. Fit the gas regulator supplied, into the gas supply
line as close to the appliance as possible.

NOTE:
The gas pressure regulator provided with this
appliance is convertible between Natural Gas and
LPG as per the ‘Gas Conversion Section’ in this
manual.
Ensure the regulator is converted to the correct gas
type that the appliance will operate on.

WARNING:

DO NOT USE A NAKED FLAME TO CHECK FOR GAS LEAKAGES.