Stoelting M202A, Руководство оператора

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Installation Guide
Step 1 Running Line Sets:
* If the freezer is water-cooled, proceed to Step 2 Running Electrical Connections .
* Line sets are not supplied with the freezer.
* The lines sets can be installed prior to receiving the custard freezer.
1) An air-cooled freezer requires a remote condensing unit and line set for each freezing cylinder. The
line sets must be 3/8” for the liquid line and 7/8” for the suction line (The M202 suction line needs
5/8”). When running the line sets, each 10’ of
vertical rise, install a p-trap in the suction line. For every
horizontal line set run, pitch the suction line towards the compressor to assist with oil returning back to
the compressor.
2) After the line set is installed, perform a thorough leak test. Malfunctions of the equipment due to
leaks in the line set are not covered by the Stoelting/Ross warranty.
3) Insulate the suction line with a minimum of 3/8” wall thickness or the wall thickness required by local
code. In humid areas, use thicker insulation. In areas that are exposed to extreme temperatures, insulate
the liquid line to prevent excessive sub cooling or heating of the liquid refrigerant. Fasten all lines
securely along ceilings, walls and roofs. Avoid creating any type of kink in the lines. The Stoelting/Ross
warranty does not cover malfunctions or capacity issues with equipment caused by kinks in the line sets.
4) Use good piping practices when installing line sets. Seal the ends of the line sets during installation to
prevent exposure to the atmosphere and foreign objects. Blow the lines out with dry nitrogen to remove
any debris that might be in the line sets. When running line sets through a wall or roof, mark the lines to
eliminate confusion as to which line set is running to which cylinder.
Example: Mark the liquid and suction lines with the respective cylinder number. Facing the front of the
freezer, cylinders are numbered left to right.
5) When brazing the joints, purge dry nitrogen through the lines to minimize oxidation of copper inside
of the lines. The Stoelting/Ross warranty does not cover problems with the refrigeration system that are
caused by oxidized material in the lines.
Step 2 Running Electrical Connections:
1) The freezer requires a separate electrical connection for each freezing cylinder. Refer to the
nameplate on the freezer for proper electrical supply. Each freezing cylinder has its own electrical
system and condenser so if one cylinder fails, the other cylinder will still be operational.
*An air-cooled freezer needs
two circuits for each freezing cylinder, one for the remote condensing unit
and one for the freezing cylinder.
*A water-cooled freezer needs one circuit for each freezing cylinder.
2) The electrical boxes are located behind the lower front panel. Labels indicate which cylinder each
electrical box powers. No pigtails are supplied with the freezer or condensing unit.
3) If the condensing unit is on the roof or ground, a quick disconnect box needs to be installed to provide
power.