Manitowoc Ice QF0800, QF2300 Installation Instructions, Section, 2-14, Connecting the line set

Installation Instructions Section 2

Step 4 Connecting the line set.

To prevent oxidation of the copper, purge line set and condensing unit with dry nitrogen while brazing.

Connect The Line Set To The Ice Machine Head Section

!Warning

The ice machine head section contains refrigerant charge. The ice machine head section contains three

(3)refrigeration valves that must remain closed until proper installation of the line sets is completed.

The line set shut off valves at the back of the ice machine must remain closed and be protected from heat during the brazing process. Wrap the valves in a wet rag or other type of heat sink prior to brazing. Cool braze joint with water immediately after brazing to prevent heat migration to the valve.

Connect The Line Set To The Remote Condensing Unit

The compressor oil rapidly absorbs moisture. Be prepared to complete line set installation and start your evacuation process in order to minimize the time the compressor is exposed to the atmosphere. (Maximum amount of time the system can be exposed to the atmosphere is 15 minutes).

The line set can be routed for entry through the front or left side of the condensing unit.

•Remove knockout for preferred location.

•Insert supplied plastic bushings in knockout holes to prevent tubing from contacting sheet metal.

•Use the supplied 90° elbows to route tubing.

•Cut the tubing ends of the suction and liquid lines and braze the line sets to the condensing unit.

VALVES MUST REMAIN

CLOSED AND BE

PROTECTED FROM

HEAT WHEN BRAZING (WRAP WITH WET RAG)

SV1757

!Warning

The condensing unit ships from the factory pressurized with a 50/50 mixture of nitrogen/helium. Bleed off pressure from both suction and liquid line access ports prior to cutting into refrigeration lines.

SUCTION

FILTER

SUCTION

LINE

MINIMIZE THE TIME THE REFRIGERATION
SYSTEM IS EXPOSED TO THE ATMOSPHERE
(15 MINUTES MAXIMUM)	SV2100

2-14 Revised 8/2003 Part No. 80-1214-3