Pressure Compensation Valve; Remote Alarm Installation; Final Check-Up; Cleaning And Disinfection - Infrico Lab Care Plus ULF70086 Service Manual

5.10

Pressure Compensation Valve

When an outer door of the ultra low freezer is opened at low temperature, the air at room temperature
quickly enters the interior. When the door closes again, the volume of air at room temperature cools down
quickly, dropping the pressure below atmospheric pressure, resulting in a considerable vacuum. The opening of
the outer door is impossible until the internal pressures return to atmospheric pressure. Without a pressure
equalizing mechanism, it can take, in extreme cases, several hours before the door can easily reopen.
All ultra low temperature equipment has a valve that provides vacuum relief after the door openings.
The pressure compensation valve is located on the upper rear part of the unit.
5.11

Remote Alarm Installation

All ultra freezer models have a remote alarm connection that is located in the back
of the equipment.
5.12

Final Check-up

Before commissioning the device, follow the steps below:
1. Make sure the unit is free of all wood or cardboard packaging materials, both on the inside and
outside.
2. Verify that the unit is connected to a dedicated outlet.
5.13

Cleaning and Disinfection

Before commissioning the device, clean and disinfect it to remove any metal, plastic, sticker or residue
left. Use water with a neutral detergent and dry properly.
CAUTION! Do not use a brush, acid, diluent, laundry soap, washing powder or boiling water to clean
the device.
These may damage the painted surface, as well as the stainless steel surface, or the plastic and
rubber components. Also, do not clean plastic and rubber components with a volatile material.
Service Manual and Warranty
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