Marco Jet Brewer Product User Manuals & Instructions PDF

INTRODUCTION The information provided in this manual is intended to assist inthe installation and maintenance of the JET 6 Coffee Brewer & grinder. Please read the instructions carefully to prevent accidents and ensure an efficient installation.

Product Resource Details


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


Permissible mains inlet water pressure:

Minimum 20kPa / 0.02MPa / 0.2bar / 8psi

Maximum 1000kPa / 1MPa / 10bar / 145psi

The inlet water must be potable and free of contaminants. Inlet water should be 5-30°C, pH 6.5-8.5, maximum chlorine content of 100 mg per litre, total hardness of 60-180ppm. Do not connect the machine to pure reverse osmosis water or other aggressive types of water.

Ensure that the equipment is installed according to local plumbing & water regulations.

Installation procedure:

• Fit a stop valve and suitable fitting on a cold water line (e.g. 3/4” x 1/2” 311 or washing machine type stop valve).

• The boiler requires a suitable food grade inlet hose with 3/4” BSP female elbow fitting which will attach to the underside of the machine.

• Make sure that the pre-attached sealing washer is fitted on both ends.

• Turn on the water to flush any impurities, dust etc. from the inlet hose and water pipe. Allow several gallons through.

• Connect right-angled tailpiece of the hose to the inlet valve of the boiler (again 3/4” BSP). Make sure the sealing washer is fitted here again.

• Turn on water and check for leaks.

NOTE: Using a non-food grade hose (e.g. a washing ma- chine hose) will usually result in off-tastes & smells in the water, and can possibly be toxic.


In common with all water boiler manufacturers, service calls resulting from lime scale are not covered by warranty. Fitting a 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.

Machines typically need descaling every 3-6 months. Descaling of the machine requires removal of panels and must only be carried out by qualified service personnel who must read the full warnings contained in this manual, and must contact the manufacturer for detailed descaling instructions. Aggressive descaling agents can damage the stainless steel tank. Citric acid based descaling agents are recommended, the tank must be fully flushed through at least twice to remove all residues. It is recommended to de-scale the machine every 3 months in hard water areas and every 6 months in soft water areas. Descaling should be carried out by a service agent. It is also recommended to clean the urn after each days brewing using a proprietary urn-cleansing compound.


The exterior of these machines may be cleaned with a damp cloth and a light detergent.

Do not use abrasive cloths or creams, as this will spoil the finish of the machine.

Do not use a water jet or spray.

Beware of accidentally operating the draw off tap when cleaning the front of the machine


The following accessories can be used with the brewer.

• Grinder p/n.1000891

• Urn p/n.1700169

• Filter Paper p/n.8000151