White Outdoor 778 Instrukcja Obsługi Pobierz pdf (Strona 80)

Table 44.2 Continued

Horsepower 110 – 120 volts 220 – 240 volts 550 – 600 volts

7-1/2 58.0 29.0 12.0

10 76.0 38.0 16.0

15 112.0 55.0 23.0

45 Strain Relief Tests

45.1 When tested in accordance with 45.2, the strain-relief means provided on a ﬂexible cord is to

withstand for 1 minute, without displacement of the cord, a direct force of 35 pounds (156 N) applied to

the cord with the connections within the pump severed.

45.2 A 35 pound (15.9 kg) weight is to be suspended from the cord and supported by the pump so that

the strain-relief means is stressed from any angle that the construction of the pump permits. The strain

relief is not acceptable if, at the point of disconnection of the conductors, there is such movement of the

cord as to indicate that stress would have resulted on the connections or the watertight seal is damaged.

45.3 Strain relief at the entrance of a cord or cable of a contractor-type pump shall support the pump for

1 minute without damage to the seal or transmission of stress to the internal connections.

45.4 Strain relief at the entrance of deep-well cable to a deep-well, submersible-type pump shall

withstand a 35 pound (156 N) force applied to each conductor for 1 minute without damage to the seal or

transmission of stress to the internal connections. The test shall be conducted on each conductor of a

twisted-singles construction and on the complete cable of the integral parallel conductor type.

46 Operation Test

46.1 Operation of a pump as described in 46.2 shall not increase the risk of ﬁre, electric shock, or injury

to persons.

46.2 With reference to 46.1, an as-received sample of the pump is to be set up or installed in accordance

with the manufacturer’s instructions. The sample is to be operated in accordance with the manufacturer’s

instructions with regard to the intended uses of the pump, including maintenance and cleaning

recommended by the manufacturer and lack of such maintenance and cleaning, and with all accessories

recommended by the manufacturer for use with the pump. The pump is to be manipulated as it would be

in actual use, including manipulation of all controls and operation under the various loading conditions that

can be expected. The pump is to be operated only for the length of time, or number of cycles needed to

determine the appropriateness of the manufacturer’s instructions.

SEPTEMBER 28, 2000MOTOR-OPERATED WATER PUMPS - UL 77860

1 2 ... 75 76 77 78 79 80 81 82 83 84 85 ... 99 100

Brak uwag

White Outdoor 778 Instrukcja Obsługi Strona 80