Unit In As-Delivered Condition; Lifting The Unit Out Of Liquid; Storage Guidelines; Storage Location - Xylem Flygt 2250 Installation, Operation And Maintenance Manual

Transportation and Storage
Make sure that the product is warmed up to a temperature above the freezing point before
starting up. Avoid rotating the impeller/propeller by hand at temperatures below the
freezing point. The recommended method to warm the unit up is to submerge it in the
liquid which will be pumped or mixed.
NOTICE:
Never use a naked flame to thaw the unit.

Unit in as-delivered condition

If the unit is still in the condition in which it left the factory - all packing materials are
undisturbed - then the acceptable temperature range during transportation, handling and
storage is: –50°C (–58ºF) to +60°C (+140ºF).
If the unit has been exposed to freezing temperatures, then allow it to reach the ambient
temperature of the sump before operating.

Lifting the unit out of liquid

The unit is normally protected from freezing while operating or immersed in liquid, but the
impeller/propeller and the shaft seal may freeze if the unit is lifted out of the liquid into a
surrounding temperature below freezing.
Units equipped with an internal cooling system are filled with a mixture of water and 30%
glycol. This mixture remains a flowing liquid at temperatures down to –13°C (9°F). Below –
13°C (9°F), the viscosity increases such that the glycol mixture will lose its flow properties.
However, the glycol-water mixture will not solidify completely and thus cannot harm the
product.
Follow these guidelines to avoid freezing damage:
1. Empty all pumped liquid, if applicable.
2. Check all liquids used for lubrication or cooling, both oil and water-glycol mixtures, for
the presence of water. Change if needed.

Storage guidelines

Storage location

The product must be stored in a covered and dry location free from heat, dirt, and
vibrations.
NOTICE:
• Protect the product against humidity, heat sources, and mechanical damage.
• Do not place heavy weights on the packed product.

Long-term storage

If the unit is stored more than 6 months, the following apply:
• Before operating the unit after storage, it must be inspected with special attention to
the seals and the cable entry.
• The impeller/propeller must be rotated every other month to prevent the seals from
sticking together.
8 Flygt 2250 Installation, Operation, and Maintenance Manual