MAINTENANCE & TROUBLESHOOTING

Expert service

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.

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.

Preventive maintenance

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 :

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.

Leakage control

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:

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.

Troubleshooting

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.

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.

Equipment

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

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