McQuay SEASONCON ALP-037A, Manual, Page: 3 / 43

INTRODUCTION
GENERAL DESCRIPTION
McQuay type ALP SEASONCON air cooled condensing nection to any air or water cooling evaporator.
units are designed for outdoor installations and are com-
The electrical control center includes all safety and
patible with either air handling or chilled water systems. operating controls necessary for dependable automatic
Each unit is completely assembled and factory wired before operation except for the cooling thermostat since this is
evacuation, charging and testing. Each unit consists of: twin somewhat dependent upon the unit application. Com-
air cooled condensers with integral subcooler sections. pressors and fan motors are fused in all three conductor legs
multiple accessible hermetic compressors, complete dis- and started by their own three pole contactor.
charge piping and suction and liquid connections for con-
N O M E N C L A T U R E
A L P 089
TTT
PROPELLER FAN
- - N O M I N A L C A P A C I T Y
INSPECTION
When the equipment is received, all items should be carefully checked against the bill of lading to insure a complete shipment.
All units should be carefully inspected for damage upon arrival. All shipping damage should be reported to the carrier and a
claim should be filed. The unit serial plate should be checked before unloading the unit to be sure that it agrees with the
power supply available.
INSTALLATION
NOTE: Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and
regulations, and experienced with this type of equipment. CAUTION: Sharp edges and coil surfaces are a potential injury
hazard. Avoid contact with them.
H A N D L I N G
Care should be taken to avoid rough handling or shock due
to dropping the unit. Do not push or pull the unit from
anything other than the base, and block the pushing vehicle
away from the unit to prevent damage to the sheet metal
cabinet and end frame (see Figure 1).
Never allow any part of the unit to fall during unloading
or moving as this may result in serious damage.
To lift the unit, 2%” diameter lifting holes are provided
in the base of the unit. Spreader bars and cables should be
arranged to prevent damage to the condenser coils or unit
cabinet (see Figure 2).
LOCATION
Due to the vertical condenser design, it is recommended
that certain precautions be taken before installation to
orient the unit so that prevailing winds blow parallel to the
unit length, thus minimizing effects on condensing pressure.
If it is not practical to orient the unit in this manner, a
wind deflecting fence should be considered.
The clearance requirements for these units are given in
Figure 3.
SERVICE ACCESS
Each end of the unit must be accessible after installation
for periodic service work. Compressors and manual liquid
line shut-off valves are accessible from the control center
end of the unit through removable access panels on unit
sizes 089B through 159B and hinged side access doors on
unit sizes 037A thru 078B.
All operational, safety and starting controls are located
in the unit control center. Capped connections for field
service gauges are also located inside these enclosures.
C A U T I O N : Disconnect all power to the unit while ser-
vicing condenser fan drives.
FIGURE 1. SUGGESTED PUSHING ARRANGEMENT
BLOCKING REQ’D.
ACROSS FULL WIDTH
FIGURE 2. SUGGESTED LIFTING ARRANGEMENT
SPREADER
MUST THESE RIGGING
HOLES FOR THRU
159B. (NOTE CONTROL BOX
LOCATION.)
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