Compressor Change in Historic District
Sunday, July 11, 2010
Finding an appropriate location for air conditioning equipment in an historical district can be complicated. The condensing unit for this site (the large heat-rejection component), which is typically located outside, is placed inside a below-grade pit. Late last week one of the compressor reed valves broke damaging one of the compressor’s six pistons and its associated cylinder.
The damage was too severe to make a field repair of the compressor so a new one needed to be installed. With the help of riggers the multi-hundred pound compressor was changed out yesterday.
The system is running well and the historic district remains unaffected.
The scored piston and cylinder of the damaged compressor.
New compressor being lowered by chain fall into the pit.
New compressor readied for lowering.
New valve plate installed before unloader is bolted on.
The new compressor is field-equipped with an two “unloaders”, which allows the single-speed system to operate at three capacities, saving energy when demand is low.
Riggers steady chain fall on temporary beam hoist.
The new compressor with unloaders ready for rigging.
Mission: To design, install and maintain high performance systems that provide safety and comfort.
Keyes North Atlantic, Inc.
459 Watertown Street, Newton, MA, USA 02460-1451
617-964-6180 www.keyesweb.com office@keyesweb.com