McQuay WMC-B 145D, Руководство по установке, Страница: 16 / 53

16 IM 1128-2
1. Disassemble the unit to the extent required by the site conditions. Rig the components to their final
location and reassemble them using the fasteners that came with the unit.
2. The compressor and its suction and discharge piping should be installed on the stack before any other
lines are attached. Mount the compressor on the stack. Mounting bolts, washers and nuts are shipped
loose. Leave the mounting bolts loose until the suction and discharge lines are in place and aligned.
Install the suction and discharge piping. Before tightening the Victaulic couplings, position the suction
and discharge piping so that the compressor can be aligned to give the best fit-up. When this is achieved,
secure the compressor mounting bolts and proceed with installing the Victaulics using a light coating of
Victaulic lubricant. See Figure 3.
3. Install the liquid line using Figure 11 as a guide. Commonly used arrangements are illustrated. The
bottom two arrangements illustrate lines with electronic valves used on some size units. Due to the
variety of vessel combinations available, variation on specific units will occur.
4. Install the motor cooling line using Figure 5 as a guide.
5. Install the liquid injection line (see Figure 4). Note that any given injection line may be configured
somewhat differently than shown on the drawing.
If the oil cooler and oil sump have been removed on the job site, reinstall them using the fasteners that came on
the unit. See Figure 12 for piping between the cooler and sump and the cooling water piping. See
6.
Figure 8
for the balance of the four oil lines connected to the compressor. There are a variety of fitting
types employed on the oil lines. Reconnect the compression fittings, bolt on the flanges using new
gaskets/O-rings furnished, and re-sweat the sweat connections.
Due to the wide variety of model arrangements, some or all of the oil piping may be shipped loose.
When possible, the cooler and sump will be shipped mounted to their back plate with as much piping
remaining as possible.
7. Install the four-way solenoid valve assembly on the compressor suction housing.
8. Install the two control panels; the compressor panel is mounted adjacent to the oil sump and the unit
panel is on top of the evaporator. Wire and sensor leads have been disconnected at their terminus and
labeled. They remain connected at the panels and rolled up. Their destinations have matching labels,
which simplifies the installation. Compressor panel sensor labels are prefixed with CS, unit panel labels
with US. Use the following drawings as a guide for installing wiring and sensors:
Compressor panel detail