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The motor(s) should be operated for three hours at least once a month. This
serves to dry out windings and re-lubricate bearing surfaces. Refer to the Marley
“Electric Motor User Manual”
Manual 92-1475
available at spxcooling.com.
At start of new operating season, make sure bearings are adequately lubricated
before returning motor to service.
Long-Term Storage Procedures
Instructions for protection of non-operating equipment for more than 3 months.
After installation of the Fluid Cooler and completion of the pre-startup instruc-
tions, the operational availability of equipment will last for a maximum period
of three months. Ensure that the fluid cooler and coil are completely drained
of all water and process fluid.
After this initial period of 3 months, until the unit is employed into continuous
operation, the fan shaft should be turned by hand for a few minutes every
month after: Inject a small amount of grease into ball /roller bearings of fan shaft
and drive components as per the manufacturer’s recommendation attached.
General Protective Requirements for Fluid Coolers:
The fan opening at the top of the fluid cooler should be covered with a tarp.
This will protect the mechanical components from rain as well as keep out
dirt, trash, leaves, etc.
All coils on every fluid cooler model are protected from the environment by
the structure of the fluid cooler as well as the PVC air inlet louvers. No ex-
ternal protection of the coil is required for long-term storage. For those units
equipped with dampers, the blades of the dampers should be kept in closed
position. Damper actuators must be removed and stored in a dry location to
prevent condensation buildup inside the actuator.
Internal Protection of Coil:
All of the coil inlet and outlet connections should be sealed off with blind
flanges. One flange per coil should be fitted with a valve, pressure gage and
blocking plug. The coils should be charged with nitrogen gas to prevent cor-
rosion. Connect a nitrogen supply line to the blind flange with valve. Loosen
the bolts at one of the inlet nozzle blind flanges to let air escape. Inject inert
gas into coil so as to effect nitrogen flushing for about 10 minutes and thus
maintenance
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