Manitowoc Ice Q - Manual (Page 26)

Installation Instructions Section 2
2-16 Part Number 000001530
Step 5 Pressure Test and Evacuate The Line Set
and CVD Condensing Unit
Schrader valve core removal tools that allow for removal
and installation of the valve cores without removing
manifold gauge set hoses are recommended to
decrease the evacuation time.
Leave the line set shut off valves closed (front seated).
Pressure test the line sets and CVD condensing unit
with 150 psig of dry nitrogen. Add nitrogen at the line set
shut off valves located at the back of the ice machine.
Complete the pressure test, verify no leaks are present
and remove the nitrogen from the system before
connecting the vacuum pump. Connect a vacuum pump
to both of the line set shut off valves located at the back
of the ice machine head section. Evacuate to 500
microns minimum. To completely evacuate the CVD
condensing unit, continue the evacuation for 30 minutes
after reaching the 500 micron point.
If required, the line set and condensing unit can be
evacuated from the schrader valves located in the CVD
condensing unit. Schrader valve core removal tools (that
allow for putting the cores back in without removing
vacuum pump hoses) must be used if evacuating from
the condensing unit side.
Pressure test the condensing unit and line set with 150
psig of dry nitrogen. Add nitrogen at the condensing unit
Schrader valves. Complete the pressure test, verify no
leaks are present and remove the nitrogen from the
system before connecting a vacuum pump. Connect the
vacuum pump to both the Schrader valves and evacuate
to 500 microns minimum.
Disconnect the vacuum pump from the condensing unit
access ports prior to proceeding. Open refrigeration
system shut off valves.
The suction line, liquid line and receiver service valves
are closed during shipment and installation.
SV1769b
CONNECT
VACUUM PUMP TO
LINE SET SHUT
OFF VALVES
SV1306A
CONDENSING UNIT
SCHRADER VALVES