User manual

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 tower 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 tower 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 tower as well as the PVC air inlet louvers. No external protec-

tion 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

to expel all air out of the unit. Finally, re-tighten the inlet nozzle blind ﬂange

bolts and let nitrogen pressure build up to 7 PSIG inside the tube-bundle.

Disconnect the nitrogen line and plug the isolation valve to avoid any pressure

drop in case of valve leak.

Machinery Components

Electric motors: All drive motors should be taken down and stored indoors.

Then, every month, turn motor shafts to evenly distribute lubricant to the

bearing parts.

Maintenance