Xylem Flygt JA 112, Инструкция по установке, эксплуатации и обслуживанию

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P-installation Lifting equipment is required to handle the jet aerator. The lifting chain and the shackle
should be in stainless steel and inspected every year.
S-installation The minimum height between the lifting hook and the ground must be sufficient to be
able to lift the jet aerator out of the tank.
Authority regulation
Vent the tank of a sewage station in accordance with local plumbing codes.
Fasteners
• Only use fasteners of the proper size and material.
• Replace all corroded fasteners.
• Make sure that all fasteners are properly tightened and that there are no missing
fasteners.
Torque values
All screws and nuts must be lubricated to achieve correct tightening torque. Screws that
are screwed into stainless steel must have the threads coated with suitable lubricants to
prevent seizing.
If there is a question regarding the tightening torques, please contact the local sales and
service representative.
Screws and nuts
Table 3: Stainless steel, A2 and A4, torque Nm (ft-lbs)
Property
class
M4 M5 M6 M8 M10 M12 M16 M20 M24 M30
50 1.0 (0.74) 2.0 (1.5) 3.0 (2.2) 8.0 (5.9) 15 (11) 27 (20) 65 (48) 127 (93.7) 220 (162) 434 (320)
70, 80 2.7 (2) 5.4 (4) 9.0 (6.6) 22 (16) 44 (32) 76 (56) 187 (138) 364 (268) 629 (464) 1240 (915)
100 4.1 (3) 8.1 (6) 14 (10) 34 (25) 66 (49) 115 (84.8) 248 (183) 481 (355) — —
Table 4: Steel, torque Nm (ft-lbs)
Property
class
M4 M5 M6 M8 M10 M12 M16 M20 M24 M30
8.8 2.9 (2.1) 5.7 (4.2) 9.8 (7.2) 24 (18) 47 (35) 81(60) 194 (143) 385 (285) 665 (490) 1310
(966.2)
10.9 4.0 (2.9) 8.1 (6) 14 (10) 33 (24) 65 (48) 114 (84) 277 (204) 541 (399) 935 (689) 1840
(1357)
12.9 4.9 (3.6) 9.7 (7.2) 17 (13) 40 (30) 79 (58) 136 (100) 333 (245) 649 (480) 1120
(825.1)
2210
(1630)
Hexagon screws with countersunk heads
For hexagon socket head screws with countersunk head, maximum torque for all property
classes must be 80% of the values for property class 8.8 above.
Check before start-up
Check that the pump installation is completed according to the applicable Installation,
Operation, and Maintenance manual.
• Check the horizontal positioning of the jet aerator according to the dimensional
drawings.
• Check that the water jet propagates freely without meeting obstacles or side walls.
The direction of flow that is created must not conflict with flows of other mixers or jet
aerators installed.
Installation
Flygt jet aerator JA 112, JA 117, JA 217, JA 317 Installation, Operation, and Maintenance Manual 11