Manitowoc QD0202A, Руководство по обслуживанию

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Installation Instructions Section 2
2-16
Part No. 80-1100-3
LENGTHENING OR REDUCING LINE SET LENGTHS
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 Schraeder valves. Use these valves to recover any
vapor charge from the line set. When lengthening or
shortening lines, follow good refrigeration practices and
insulate new tubing. Do not change the tube sizes.
Evacuate the lines and place about 5 oz (143g) of vapor
refrigerant charge in each line.
CONNECTING A LINE SET
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.
4. Tighten the couplings with a wrench until they
bottom out.
5. Turn an additional 1/4 turn to ensure proper brass-
to-brass seating. Torque to the following
specifications:
6. Check all fittings for leaks.
REMOTE RECEIVER SERVICE VALVE
The receiver service valve is closed during shipment.
Open the valve prior to starting the ice machine.
1. Remove the top and left side panels.
2. Remove the receiver service valve cap.
3. Backseat (open) the valve.
4. Reinstall the cap and panels.
Figure 2-9. Backseating the Receiver Service Valve
Liquid Line Discharge Line
10-12 ft lb.
(13.5-16.2 N•m)
35-45 ft lb.
(47.5-61.0 N•m)
SV1603
REMOVE FRONT, TOP,
AND LEFT SIDE PANEL
FOR ACCESS TO
RECEIVER VALVE
TURN
COUNTERCLOCKWISE TO
OPEN
RECEIVER SERVICE
VALVE CAP (TURN
COUNTERCLOCKWISE TO
REMOVE)