SP Scientific Freezemobile Series, Operator'S Manual, Page: 14 / 54

Installation and Startup VirTis Freezemobile 25L and 35L
4 Rev 005, 02/12
© SP Scientific 2012
2. The three individual conductors now exposed are BROWN, BLUE, and
GREEN with a YELLOW tracer.
3. Connect the BROWN wire to the line (hot) terminal on the plug.
4. Connect the BLUE wire to the neutral terminal.
5. Connect the GREEN/YELLOW wire to the ground terminal.
Freezemobile Setup
1. Position the Freezemobile unit so that it rests firmly and level on the floor.
Allow yourself sufficient space to easily connect the unit and ensure that the
area around the unit provides for adequate air circulation. The back of the
Freezemobile should be at least four inches away from the wall.
Note: For efficient operation, maintain room temperature at 20 °C (68 °F). Warmer
ambient temperatures may negatively affect system performance.
2. The refrigeration system compressors may be mounted on shock absorbent
springs. Check to see if you have compressor spring mounts. If so, use a ½-
inch wrench to loosen the shipping hex nuts on the spring mount bolts. These
are tightened prior to shipment. Turn each shipping hex nut counterclockwise
until the top of the nut is flush with the top of its bolt. This will float the
compressor on the springs and prevent vibration from extending to the
cabinet. To reach all spring mount bolts, you may need to work through the
back, front grille and/or side panels.
3. If you purchased a vacuum pump with your unit, it will ship pre-installed inside
the cabinet. Remove the shipping plug in the exhaust port and ensure that the
vacuum pump is plugged into the IEC receptacle marked VACUUM.
4. Check the vacuum pump oil level. The oil should read between the center and
top of the sight glass when the pump is off and near the top line while the
pump is in use. Add oil only if necessary.
Note: The vacuum pump is shipped with oil in it. Do not overfill.
Pump vapors can be dangerous in the laboratory and are typically not
tolerated in a cleanroom. SP Scientific suggests that you use an adequate
vacuum pump exhaust system. You can use an exhaust fume hood or vent
the pump to the outside of the building. Exhaust lines should travel
horizontally from the pump to a “T” with a drainable trap, and then 90 degrees
vertically to an outside vent. Place trap as close to the pump as possible.
Note: Oil mist eliminators are available from SP Scientific.