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Photo Walkthrough: Rooftop Hot Water Reheat Coil Replacement

  • Jill Nelson
  • Jul 2
  • 2 min read

MSC recently completed the removal and replacement of a hot water reheat coil at a flavors and fragrances manufacturing facility in northern New Jersey. The existing coil had reached the end of its service life, with significant corrosion on the copper piping. The following photo walkthrough covers the removal, rigging, and installation of the new hydronic coated coil. Additional scope included copper repiping, reinsulation, start-up, and testing.


Journeyman technician Mike Perricone and installation foreman Scott Allison led the rigging and installation from start to finish.
Journeyman technician Mike Perricone and installation foreman Scott Allison led the rigging and installation from start to finish.
Sales engineer Tony Folk, PE, surveys the job site.
Sales engineer Tony Folk, PE, surveys the job site.
Gaining access. The filter rack has been partially cleared, setting the crew up for a clean extraction
Gaining access. The filter rack has been partially cleared, setting the crew up for a clean extraction
Scott climbs into the coil bay hatch while Mike looks on.
Scott climbs into the coil bay hatch while Mike looks on.
Extracting the old coil. Mike uses a tool as leverage as the coil is walked out of the unit. The level of corrosion is consistent with years of exposure in a harsh process environment.
Extracting the old coil. Mike uses a tool as leverage as the coil is walked out of the unit. The level of corrosion is consistent with years of exposure in a harsh process environment.
The old coil, extracted and staged on wood cribbing and rollers. The face of the coil is visibly aged and fouled.
The old coil, extracted and staged on wood cribbing and rollers. The face of the coil is visibly aged and fouled.
A tight fit. Looking down the narrow work area between the coil bay opening and a high wall as the crane hook descends.
A tight fit. Looking down the narrow work area between the coil bay opening and a high wall as the crane hook descends.

Rigging the old coil. Scott attaches rigging straps to the hook while Mike observes from below.
Rigging the old coil. Scott attaches rigging straps to the hook while Mike observes from below.
The lift begins. A look from below as the oil coil is hoisted.
The lift begins. A look from below as the oil coil is hoisted.
Scott coordinates the pick. Scott, radio in hand, relays the position of the coil to the crane operator.
Scott coordinates the pick. Scott, radio in hand, relays the position of the coil to the crane operator.
Safe landing. Mike removes the rigging from the old coil.
Safe landing. Mike removes the rigging from the old coil.
Old coil, meet new. The old coil has been loaded onto the truck beside the new coil.
Old coil, meet new. The old coil has been loaded onto the truck beside the new coil.

Drone's-eye view. The crew and coil bay are visible at the center of the roof, with the new coil suspended high above them.
Drone's-eye view. The crew and coil bay are visible at the center of the roof, with the new coil suspended high above them.
The new coil is lowered into the narrow space as the crew awaits its arrival.
The new coil is lowered into the narrow space as the crew awaits its arrival.
Careful choreography. Mike guides the outer corner of the new coil into the bay while Justin Becker lends a hand.
Careful choreography. Mike guides the outer corner of the new coil into the bay while Justin Becker lends a hand.
Scott inspects the new coil from inside the space, confirming that it's seated properly before piping begins.
Scott inspects the new coil from inside the space, confirming that it's seated properly before piping begins.
Before and after: The corroded bends of the original coil in stark contrast with the protected surface of its replacement. The new coil is engineered to withstand the facility's demanding process environment and remain in service for years to come.
Before and after: The corroded bends of the original coil in stark contrast with the protected surface of its replacement. The new coil is engineered to withstand the facility's demanding process environment and remain in service for years to come.



 
 
 
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