Operation
Precautions
WARNING:
• Never operate the pump without safety devices installed.
• Never operate the pump with the discharge line blocked, or the discharge valve
closed.
• Make sure you have a clear path of retreat.
• Never work alone.
CAUTION:
If the pump is equipped with automatic level control and/or internal contactor, there is a
risk of sudden restart.
Distance to wet areas
Electrical Hazard:
• Risk of electrical shock. Make sure no one gets closer than 20 m (65 ft.) to the unit
when being in contact with the pumped or mixed liquid.
• Risk of electrical shock. This unit has not been investigated for use in swimming pools.
If used in connection with swimming pools special safety regulations apply.
Noise level
NOTICE:
The noise level of the product is lower than 70 dB. However, the noise level of 70 dB may
be exceeded in some installations and at certain operating points on the performance
curve. Make sure that you understand the noise level requirements in the environment
where the pump is installed. Failure to do so may result in hearing loss or violation of local
laws.
Estimate zinc anode replacement intervals
The mass and surface area of the zinc anodes are designed to protect the pump surface
for 1 year in sea water with an average temperature of 20°C (68°F). Shorter inspection
intervals and anode replacement can be required, depending upon the water
temperature and the chemical composition as well as the presence of other metals in the
vicinity of the pump.
The rate of zinc consumption, and the appropriate inspection intervals, can be estimated
by measuring how much zinc is consumed during the
first two months following
installation.
Anodes are replaced when the anode mass is reduced to a selected fraction of its initial
mass. The recommended interval for the selection fraction is 0.25–0.50 (25–50%).
1. Remove, weigh, and reinstall one or more of the exterior zinc anodes before starting
up the pump.
2. After two months, remove and weigh the same zinc anode or anodes again.
3. Divide the lapsed time in days (between steps 1 and 2) by the anode weight loss in
grams to get the calculated anode consumption rate (days/gram).
Operation
Flygt 3202 Installation, Operation, and Maintenance Manual 39
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