Manitowoc 820C Serie Manual De Instalación, Operación Y Mantenimiento página 21

Section 2
Step 3 Connect the Line Set.
Remote Condensers Only
In most cases, by routing the line set properly, shortening
will not be necessary. When shortening or lengthening is
required, do so before connecting the line set to the ice
machine or the remote condenser. This prevents the loss of
refrigerant in the ice machine or condenser.
The quick connect fittings on the line sets are equipped with
access valves. Use these valves to recover any vapor charge
from the line set. When lengthening or shortening lines,
follow good refrigeration practices, purge with nitrogen
and insulate all tubing. Do not change the tube sizes.
Evacuate the lines and place about 145 grams (5 oz) of vapor
refrigerant charge in each line.
1. Remove the dust caps from the line set, condenser and
ice machine.
2. Apply refrigeration oil to the threads on the quick-
disconnect couplers before connecting them to the
condenser.
3. Carefully thread the female fitting to the condenser or
ice machine by hand, then tighten the couplings with a
wrench until they bottom out.
4. Turn an additional quarter turn to ensure proper brass-
to-brass seating. Torque to the following specifications:
Liquid Line
13.5-16.2 N•m
5. Check all fittings and valve caps for leaks and reinstall
and tighten caps.
6. The receiver service valve is closed during shipment and
must be opened before starting the ice machine.
A. Remove the receiver service valve cap.
B. Backseat (open) the valve.
C. Reinstall the cap and panels.
7. Interconnecting line voltage wiring is used to energize
and de-energize the condenser fan motor. The remote
condenser voltage matches the ice machine head
section voltage.
Interconnecting Wire Connections
Ice Machine Head Section
F1
F2
Installation is finished for remote condenser models. Proceed
to page 25 for start-up procedure.
Part Number: 000013325 Rev 02 6/17
Discharge Line
47.5-61.0 N•m
Remote Condenser
L1
L2
QuietQube Models Only
• Maximum amount of time the refrigeration system can
be exposed to the atmosphere is 15 minutes.
• Purge line set with dry nitrogen while brazing.
• Shutoff valves for the line set on the ice machine must
remain closed and be protected from heat during brazing.
• The condensing unit ships with a 50/50 mixture of
nitrogen/helium.
SUCTION
LINE
LIQUID
LINE
MINIMIZE
REFRIGERATION SYSTEM
EXPOSURE TO ATMOSPHERE (15
MINUTES MAXIMUM)
Installation
VALVES MUST REMAIN
CLOSED AND BE
PROTECTED FROM HEAT
WHEN BRAZING (WRAP
WITH WET RAG)
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