Xylem 7030.090, Инструкция по установке, эксплуатации и обслуживанию

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Lifting equipment
Lifting equipment is always required to handle the unit. The lifting equipment must fulfill the
following requirements:
• The minimum height between the lifting hook and the floor must be sufficient to lift the
unit. Contact a Xylem representative for more information.
• The lifting equipment must be able to hoist the unit straight up and down, preferably
without the need for resetting the lifting hook.
• The lifting equipment must be correctly anchored and in good condition.
• The lifting equipment must support the weight of the entire assembly. Only authorized
personnel may use the lifting equipment.
• Two sets of lifting equipment must be used to lift the unit for repair work.
• The lifting equipment must be dimensioned to lift the unit with any remaining pumped
media in it.
• The lifting equipment must not be oversized.
CAUTION: Crush Hazard
Improperly-dimensioned lifting equipment can lead to injury. A site-
specific risk analysis must be done.
2.3 Temperature ranges for transportation, handling and storage
Handling at freezing temperature
At temperatures below freezing, the product and all installation equipment, including the
lifting gear, must be handled with extreme care.
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.
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 unacceptable amounts of water. Change if needed.
Water-glycol mixtures: Units equipped with an internal closed-loop 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.
2 Transportation and Storage
10 P7030, P7035, P7040 Installation, Operation, and Maintenance Manual