Basin heaters systems will not prevent the coil from freezing.
Unless some means of freeze prevention is incorporated into your
system,thetowerbasinandexposedpipeworkshouldbedrainedat
the beginning of each wintertime shutdown period.
If fluid cooler basin is drained, verify that all basin heaters have been
shut off either by automatic cutoff or disconnect switch.
Protection Against Coil Freezing:
Ethylene and propylene glycol solutions are the best means to protect the
coil from freezing. The following table provides the coil volume for each
MC Fluid Cooler model. When the use of industrial antifreeze solutions is
not possible, the system must be operated to meet both of the following
conditions.
1. Maintain sufficient flow rate through the coil.
2. Maintain sufficient heat load on the process fluid. Fluid exiting the
coil must be maintained at or above 8°C. Cycling of the recirculation
pump should not be used to control process temperatures.
Draining the coil is not acceptable as a normal method of freeze
protection—draining promotes corrosion inside the coil tubes. Drain-
ing is acceptable in an emergency if the coil is not protected by an
antifreeze solution.
It is recommended that you discuss your freeze prevention options with
your local Marley sales representative.
Operation
Warning
Caution
Caution
Warning
Model
Coil Volume
liters
Model
Coil Volume
liters
MCF7012_081 42 MCF7055_081 265
MCF7012_101 49 MCF7055_101 333
MCF7012_121 61 MCF7055_121 401
MCF7013_081 64 MCF7073_081 163
MCF7013_101 79 MCF7073_101 204
MCF7013_121 95 MCF7073_121 246
MCF7014_081 87 MCF7074_081 231
MCF7014_101 106 MCF7074_101 288
MCF7014_121 129 MCF7074_121 344
MCF7054_081 174 MCF7075_081 337
MCF7054_101 220 MCF7075_101 424
MCF7054_121 261 MCF7075_121 507
