Installation
Thermo Fisher Scientific
Laboratory and Plasma Freezers
5
5.5 Door Seal
Door seal integrity is critical for freezers. A loose fitting gasket allows moist
air to be drawn into the cabinet, resulting in quicker frost buildup on the
evaporator coil, longer running time, poor temperature maintenance, and
increased operation cost.
To check the door seal, complete the following steps:
1.
Open the door.
2.
Insert a strip of paper (a couple of inches wide) between the door gasket
and the cabinet flange and close the door.
3.
Slowly pull the paper strip from the outside. You should feel some
resistance.
4.
Repeat this test at 4-inch intervals around the door. If the door does not
seal properly, replace the gasket.
5.6 Solid Doors
Solid doors stay open if opened 90 degrees. Solid door spring tension cannot
be adjusted.
5.7 Final Checks
Before start up, complete the following steps:
1.
Make sure that the unit is free of all wood or cardboard shipping
materials, both inside and outside.
2.
Verify that the unit is connected to a dedicated circuit.
