Froilabo BM 3E Essential, Руководство пользователя

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Original manual – Iss. 0.1 User manual – BM 3E Freezer 36/ 44
9. MAINTENANCE AND CUSTOMER SERVICE
9.1 User maintenance
MICROBIAL BUILD-UP
Due to the intense cold, microorganisms from packaging, handling and contact can survive and remain fully virulent.
All necessary precautions must be taken when accessing freezers:
-
Outer surfaces must be cleaned regularly.
- Gloves must be worn.
- The door must be opened only briefly.
- Tissue samples and packaging must be handled under a laminar flow hood.
The freezer must be switched off before cleaning. A water jet must not be used for cleaning, to avoid splashing the
freezer.
9.2 Outer surfaces
Wash with warm water and soap or a non-corrosive neutral detergent. Rinse and dry thoroughly.
9.3 Interior chamber
Bleach must not be used, even at very low concentrations.
The stainless steel surfaces must not be cleaned with steel wool or any other abrasives.
9.4 Door seals
The door seal is heated by a resistive wire located within the joint in order to minimise frost build-up. Frost may
nonetheless build up between the lips of the seal, especially if the door is opened frequently. The silicone seal should
be cleaned with dry compressed air or using the plastic blade supplied by Froilabo.
9.5 Pressure relief valve
Froilabo freezers have a pressure relief valve enabling the chamber to be quickly returned to ambient pressure, either
when opening the door or after injection of CO
2
or N
2
.
Frequent opening of the doors increases humidity in the freezer and may result in ice forming in the air intake tube in
which the pressure relief valve is located. A set of calibrated foam blocks is placed in the air intake tube to minimise
this phenomenon.
If the air intake tube is blocked by ice, opening the door becomes difficult.
If this occurs, remove the safety valve and the calibrated foam blocks and then insert a screwdriver (or other long,
thin object) in the air intake tube and push the ice into the freezer chamber.
Clean the pressure relief valve (on the side of the unit) and the calibrated foam blocks on a regular basis (every one to
three months, as needed). Ensure that the valve and blocks are replaced correctly.
9.6 Air filter
In order to maintain the refrigeration performance of the freezer and prolong the life of the compressors, an air filter
is located on the front panel, in front of the condenser.
This filter must be cleaned of dust as often as necessary. To do this, simply remove the filter and wash it (using water
with no cleaning products). After drying (without wringing) the filter, put it back in place.
Freezers must not be operated without filters (except in a clean room).
9.7 Stopping for extended periods
If the unit is to remain unused for a long period of time, the following operations should be performed:
1.
Turn off the freezer.
2. Unplug the mains lead.
3. Defrost, clean and wipe the chamber.
4. Leave the door ajar to avoid any unpleasant odours.