Manitowoc Flockeneisbereiter RF 0399 A - Kälte Berlin
Manitowoc Flockeneisbereiter RF 0399 A - Kälte Berlin
Manitowoc Flockeneisbereiter RF 0399 A - Kälte Berlin
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Installation Instructions Section 2<br />
Step 4 Connecting the line set<br />
To prevent oxidation of the copper, purge line set and<br />
condensing unit with dry nitrogen while brazing.<br />
A. Connect the Line Set to the Remote Condensing<br />
Unit<br />
! Warning<br />
The QuietQube Condensing unit contains refrigerant<br />
charge. The two refrigeration valves must remain<br />
closed until proper installation of the line sets is<br />
completed.<br />
The line set shut-off valves must remain closed and be<br />
protected from heat during the brazing process. Wrap<br />
the valves in a wet rag or other type of heat sink prior to<br />
brazing. Cool braze joint with water immediately after<br />
brazing to prevent heat migration to the valve.<br />
Step 5 Pressure Test and Evacuate Line Set and<br />
Ice Machine Head Section<br />
• Suction and liquid line set shutoff valves must remain<br />
closed until pressure testing and evacuation are<br />
complete.<br />
• Pressure testing and evacuation can be performed<br />
from the ice machine head section or CVD<br />
condensing unit shut-off valves.<br />
• Schrader valve core removal tools that allow for<br />
removal and installation of the valve cores without<br />
removing manifold gauge set hoses are<br />
recommended to decrease the evacuation time.<br />
• Pressure test @ 150 psi (1000 kPa) for a minimum of<br />
15 minutes.<br />
• Minimum evacuation level is 500 microns.<br />
MINIMIZE THE TIME THE<br />
REFRIGERATION SYSTEM IS<br />
EXPOSED TO THE ATMOSPHERE<br />
(15 MINUTES MAXIMUM)<br />
SUCTION LINE<br />
LIQUID LINE<br />
B. Connect the Line Set to the Ice Machine Head<br />
Section<br />
Suction and liquid line shut-off valves<br />
must remain closed until evacuation and<br />
pressure testing are complete.<br />
! Warning<br />
The ice machine head section ships from the factory<br />
pressurized with R404A refrigerant. Recover the<br />
refrigerant from both suction and liquid line access<br />
ports prior to cutting into refrigeration lines.<br />
• Cut the suction and liquid tubing with a tubing cutter,<br />
leaving enough tubing to easily braze.<br />
• Connect the line set.<br />
• Cool braze joint with water immediately after brazing<br />
to prevent heat migration.<br />
13 Part Number 000007644 3/11
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