Chefmaster HEF605 Water Boiler

1. Information

1. Introduction

The information provided in this manual is intended to assist in the installation and maintenance of the MT range of hot water boilers. Please read the instructions carefully to prevent accidents and ensure an efficient installation. This manual is not a substitute for any safety instructions or technical data affixed to the machine or its packaging. All information in this manual is current at the time of publication and is subject to change without notice. The company accepts no responsibility for any damage or injury caused by incorrect or unreasonable installation and operation.

2. Safety

When using electrical appliances, basic safety precautions should always be followed to prevent the risk of fire, electric shock, burns, or other injuries or damages.

• Read all operating and safety instructions carefully.
• This appliance is not suitable for outdoor use.
• This appliance must be placed/installed on a horizontal flat stable surface.
• The ambient temperatures this appliance should operate within are 5 °C – 35 °C.
• Do not store the appliance in ambient temperature lower than 5 °C.
• This appliance is designed for use in self-service areas in which it can be attended to by trained personnel.
• Only the water hose supplied with the machine should be used to connect to the mains water supply.
• The hose supplied with the boiler is non-toxic food quality. However, a hose is not a permanent connection. It is, therefore, advisable to switch off the boiler and close the stopcock valve when the boiler is not in use, e.g. overnight etc.
• If a non-fixed water connection is implemented, use only the water hose provided with the appliance, alternatively, if a fixed water connection is used it must be implemented using a non-detachable water hose.
• If the water hose is disconnected, the seals should be replaced before re-connection.
• Risk of scalding: Beware of accidentally operating the water draw off tap, especially when cleaning the front of the boiler.
• The utmost care has been taken in the manufacture and testing of this machine. Failure to install, maintain and / or operate this machine according to the manufacturer's instructions may result in conditions that can cause injury or damage to property. If in any doubt about the serviceability of the machine, always contact the manufacturer or your own supplier for advice.
• This machine is not intended for use by persons (including children) with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the machine by a person responsible for their safety.
• Children should be supervised to ensure that they do not play with the machine.
• In the event where any wires are damaged, such wires can only be replaced by qualified service technicians.
• CAUTION – Risk of fire and electric shock. Only to be used with manufacturer's specified power cord set. Marco p/n 1501487 (USA), 1501488 (EU), 1501489 (UK/Ire).
• This appliance should not be installed in an area where a water jet could be used to clean it.
• Access to the service area of the appliance is restricted to persons having knowledge and practical experience of the appliance and the relevant safety and hygiene requirements.

3. Electrical Installation Procedure

Electrical specification: 2.8kW 200-230Vac 50Hz

When installing the machine, always observe the local regulations and standards. The appliance is supplied with a moulded power cord. A suitable mains power supply socket should be available within easy access of the appliance so that it can be disconnected easily after install.

4. Plumbing Installation Procedure

• Ensure that the equipment is installed according to local plumbing & water regulations.
• Mains water pressure required (limits): 100-500kPa, 0.1-0.5MPa (14.5–72.5psi).
• Fit a stop valve on a cold water line and attach a 3/4” BSP male fitting, (E.g. 3/4" x 1/2” or washing machine type stop valve).
• Turn on the water to flush any impurities, dust etc from the inlet hose and water pipe. Allow several litres through. Especially for new installations.
• Connect the hose to the inlet valve of the boiler. Make sure a sealing washer is fitted.
• Turn on water and check for leaks.
• NOTE: Using a non-food grade hose (e.g. a washing machine hose) will usually result in off tastes & smells in the water and can possibly be toxic.
• Do not connect the machine to pure reverse osmosis water or other aggressive types of water.

5. Backflow Prevention

This equipment must be installed with adequate backflow protection to comply with all applicable federal, state and local codes.

6. Maintenance

This machine has been designed to give many years of trouble free service. The only regular maintenance required is occasional de-scaling.

7. Descale Procedure

Not detailed in this section, refer to Limescale section.

8. Limescale

In common with all water boiler manufacturers, service calls resulting from limescale are not covered by warranty. For units without a water filter fitting an external scale reducer is recommended, especially in hard water areas. This can reduce the build-up of scale but may not stop it altogether. The frequency that descaling is required depends on the local water supply; hard water areas need more attention. Descaling of the machine should be carried out by qualified service personnel.

9. Disposal

Under WEEE regulations this product must not be disposed of as household waste. To prevent damage to the environment and humans this product must be disposed of in an approved and environmentally friendly recycling process. For more information on how to dispose of this correctly please contact your Chefmaster distributor or local authority responsible for waste disposal.

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10. Compliance

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All Chefmaster parts and products have undergone a stringent testing process to ensure that they comply with all European standards and specifications. All Chefmaster products carry the CE approval symbol.

11. Operating the Boiler for the First Time

1. Check that all installation procedures have been carried out, see the following page.
2. Ensure water valve is connected.
3. Plug in the IEC connector to the boiler.
4. On models with a filter, connect the filter.
5. Plug boiler into suitable socket.
6. The boiler will power up.
7. The screen will show the software revision.
8. The machine will then fill with water and the display will flash between E-2 & the current temperature of the tank, until the water has reached the low level probe, then it will show the current water temperature.
9. The default temperature is 95°C.
10. Once the machine is up to temperature the boiler is now ready for use.

NOTE: Because the boiler is electronically controlled no priming is necessary. The element cannot switch on until a safe level of water is reached.

2. Installation

The following diagrams illustrate the installation process:

Step 1: Connect Water Inlet

A diagram shows a 1/2" tube (6.35mm) being connected to the water inlet.

Step 2: Secure Base

A diagram shows a component being secured with screws.

Step 3: Connect Filter (if applicable)

A diagram shows a filter being connected, with an inset showing a close-up of the connection.

Step 4: Final Unit Placement

A diagram shows the completed installation of the water boiler. A note indicates "Software revision. Revision can change in future."

3. Installing Filter

Follow these steps to install the filter:

Step 1: Position Boiler

A diagram shows the water boiler in its final position, with an arrow indicating where the filter compartment is located.

Step 2: Install Filter Cartridge

A diagram shows the filter cartridge (part number 8000781) being inserted into the filter housing. An arrow indicates the correct orientation: "The orientation indicator on the filter should point left before rotating."

Step 3: Secure Filter Housing

A diagram shows the filter housing being closed and secured.

4. Operating Boiler

Follow these steps to operate the boiler:

Diagram of Parts

Step 1: Initial Setup

A diagram shows the front of the boiler with numbered labels pointing to the screen, standby button, tap, and drip tray.

Step 2: Tank Filling

A diagram shows the display showing "E-2" and text indicating "Tank filling: water under low level probe."

Step 3: Tank Filling Continues

A diagram shows the display showing "150" and text indicating "Tank filling."

Step 4: Dispensing Water

A diagram shows a cup being placed under the tap, and the tap being operated to dispense hot water. The display shows "950" indicating the temperature.

5. Service Set Up

1. Changing Temperature

1. Press and hold the standby button for 5 seconds.
2. The display will show the current temperature. Press the button again to add one degree. The adjustable range is 60°C - 97°C.
3. Press and hold the standby button for 5 seconds to save the value.

2. Filter Mode

The machine estimates how much water goes through the system and triggers a filter flag if a filter change is required.

1. Press and hold the standby button for 10 seconds. The display will show "F02".
2. Add 2 units. Each unit is 200L. Setting to "00" disables the filter flag.
3. Press and hold the standby button for 5 seconds to save the setting. The display will show "F04".

3. Changing from Celsius to Fahrenheit

1. Press and hold the standby button for 15 seconds. The display will show "C/F".
2. Press the button to switch between "C" (Celsius) and "F" (Fahrenheit).
3. Press and hold the standby button for 5 seconds to save the setting. The display will show the selected unit (e.g., "OF").
4. The display will then show the temperature in the selected unit (e.g., "203F").

4. Heat Fill Selection

This section describes two fill modes: Heat Fill and Continuous Fill.

Heat Fill (default & recommended setting)

The inlet valve lets in a small fixed volume of water, and the element begins heating the water to the set temperature. This process repeats until the water reaches the high-level probe and the machine reaches the desired temperature.

Continuous Fill

The inlet solenoid stays open until the water reaches the high-level probe. Simultaneously, the element stays on until the machine reaches the programmed set temperature.

1. Press and hold the standby button for 20 seconds. The display will show "H-F".
2. Switch between H-F (Heat Fill) and C-F (Continuous Fill) by pressing the button.
3. Press and hold the standby button for 5 seconds to save the setting. The display will show the selected fill mode (e.g., "C-F").

6. Cleaning & Maintenance

Follow these steps for cleaning and maintenance:

Step 1: Remove Drip Tray and Grate

Diagrams show the drip tray and grate being removed from the boiler.

Step 2: Clean Components

Diagrams show the drip tray and grate being cleaned.

Step 3: Cleaning Temperature

Cleaning max temp 65°C

Step 4: Reassemble

Diagrams show the cleaned components being reinserted into the boiler.

7. Troubleshooting

The screen of the boiler indicates various errors or problems with the machine. See the diagnostic table below for further details.

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