Forma
Model 700 Series____________________________________Installation/Start-Up
1-4
1.3 Environmental Conditions
The ULT Freezers are designed to be electrically
safe
in the following environmental
conditions:
•
Indoors
•
Altitude: Up to 2,000 meters
•
Temperature: 5°C to 43°C
•
Humidity: 80% RH at or below 31°C, decreasing linearly to 50% RH at 40°C
•
Mains Supply Fluctuations: ±10% of nominal.
•
Installation Category II
1
•
Pollution Degree 2
2
•
Class of Equipment I
•
Climatic Class T (Tropical)
3
1
Installation category (overvoltage category) defines the level of transient overvoltage which the
instrument is designed to withstand safely. It depends on the nature of the electricity supply and its
overvoltage protection means. For example, in CAT II which is the category used for instruments in
installations supplied from a supply comparable to public mains such as hospital and research
laboratories and most industrial laboratories, the expected transient overvoltage is 2500V for a 230V
supply and 1500V for a 120V supply.
2
Pollution degree describes the amount of conductive pollution present in the operating environment.
Pollution degree 2 assumes that normally only non-conductive pollution such as dust occurs with the
exception of occasional conductivity caused by condensation.
3
Class T (Tropical) means that the freezers are electrically safe in a 43°C ambient.
1.4 Installing the Wall Bumpers (Refer to Figure 1-4)
The parts bag, located inside the cabinet, contains the following parts.
Qty.
Stock #
Description
Purpose
2
224 510016
1/4-20 x 5-1/2" Bolt
Wall Bumper
2
311 380520
Neoprene Cap
Cap Protector
Install the bolts into the pre-tapped holes on the back of the compressor section.
Install a neoprene cap on each bolt. Refer to Figure 1-4 for the locations of the pre-
tapped holes.
