McQuay seasoncon ALP-067A, Installation And Maintenance Data

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FIGURE 3 CLEARANCE AROUND UNIT
60” MINIMUM CLEARANCE
M I N I M U
M
NOTE: Minimum vertical clearance above unit should be 10
feet.
Clearance to condenser coil must be increased if more
than one side is obstructed or between adjacent units.
Consult your McQUAY sales representative.
Service Access
Each end of the unit must be accessible after installation for peri-
odic service work. Compressors and manual liquid line shutoff valves
are accessible from the control center end of the unit through re-
movable access panels on unit sizes 089 through 159 and hinged side
access doors on unit sizes 067 and 078. All operational, safety,
and starting controls are located in the unit control center. They
are protected by a keylocked,
weatherproof enclosure which contains
internal "dead front" doors for protection of service personnel from
high voltage starting controls while servicing low voltage opera-
tional controls. All resettable or adjustable controls are located
just below the main control center. There is one resettable control
enclosure on each side of the unit and each enclosure contains con-
trols for compressors on that side of the unit. Capped connections
for field service gauges are also located inside these enclosures.
In addition,
each of these enclosures are removable to improve access
to compressors for field replacement.
The condenser fans, motors,
and drives are accessible through a walk-
in, keylocked access door. The access door is located at the end of
the unit opposite the control center.
An internal fan guard is located below the condenser fans and drives
on units 089 through 159. This guard must be removed to service the
fan drives but MUST always be reinstalled when service work is com-
plete.
On unit sizes 067 and 078,
an interlock switch kills power to conden-
ser fans whenever the door is opened for service work on fans or
drives.
CAUTION: Disconnect all power to the unit while servicing condenser
fan drives.
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