MAINTENANCE & TROUBLESHOOTING

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The preventive maintenance of equipment allows through regular monitoring of the devices, to ensure their proper functioning. This maintenance consists of a set of controls and tests, the main objective of which is to reduce the risk of failure of the equipment in operation in order to maintain its performance.

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The objective

 

• Extend the life of the devices,

• Minimize the risks of failures in service,

• Reduce downtime in case of overhaul or breakdown,

• Optimize energy consumption,

• Preserve spare parts,

• Facilitate the working conditions of users,

• Limit the malfunction.

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Preventive maintenance

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The preventive maintenance allows, within the framework of a maintenance contract, to check the good functioning of the device through a series of control operations. From the moment the device is put into service, our technicians can intervene on a regular basis in order to anticipate a malfunction. This type of maintenance is used in particular for equipment whose stoppage or malfunction would have consequences on the quality of service. As soon as a low or very low temperature device is put into service, it is necessary to ensure its good functioning, by regularly checking the following points :

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• Safety devices,

• High and low temperature alarm reports,

• Operating pressures of the first and second compression stages,

• The temperatures of the first and second stage circuits: cascade exchanger temperature, compressor discharge temperature, tank inlet and outlet temperature,

• The condition of the exchangers and dust filters,

• Backup batteries,

• Electronic circuits: cards (power, control and display),

• etc.

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Leakage control 

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Some leaks on refrigeration installations could have serious consequences on the conservation of heat-sensitive products. Therefore, as soon as a low and very low temperature appliance is put into service, and throughout its life cycle, it is necessary to check that it is perfectly leakproof. In accordance with the F-Gas regulation, companies and structures owning equipment equipped with a fluidic circuit charged with HFCs (hydrofluorocarbons) and HCFCs (hydrochlorofluorocarbons) must have the equipment inspected by a qualified company in order to ensure that the equipment is leakproof. The tightness is checked with a leak detector capable of detecting a leak of 5 grams per year of fluid. According to the indication given by the detector, a label is affixed on the device: blue sticker if the device is tight, and red sticker if the device is not tight. From now on, the frequencies of regulatory leakage checks are the following:

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• 5 to 50 tons Every year

• From 50 to 500 tons Every 6 months per year

• Over 500 tons Every 3 months per year

• Since January 1st, 2020, the GWP (Global Warming Potential) limit must be less than 2500 on new commercial refrigerators and freezers.

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Troubleshooting

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In case of diagnosis of a breakdown or a malfunction of an appliance, we propose you a quote for the repair of the defective appliance, and this according to the following elements :

 

• age and condition of the unit;

• cost of repair compared to a new unit;

• type of fluids used in the unit.

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Our technicians will submit to you the observations and recommendations on the merits of such a repair and undertake to respond to requests in the interval between preventive maintenance visits. The objective is to remedy any incident disturbing the operation of the equipment and in particular: a breakdown or failure of any kind, but also a replacement of a part or an adjustment. For any request for an quote or for more information on the interventions of breakdown service, contact us.

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Equipment

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MUTECH intervenes on many scientific equipments. Below you will find a non-exhaustive list. Contact us for more information.