Torque,
Nm (ft-
lbs)
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)
10.9
4.0 (2.9) 8.1 (6) 14 (10.3) 33 (24.3) 65 (48) 114 (84) 277 (204) 541 (399) 935 (689) 1840
(1357)
12.9
4.9 (3.6) 9.7 (7.2) 17 (12.5) 40 (30) 79 (58) 136 (100) 333 (245) 649 (480) 1120
(825)
2210
(1630)
Screws with countersunk heads
Stainless steel, A2 and A4
Property
class
M4 M5 M6 M8 M10 M12 M16 M20 M24
Torque,
Nm (ft-lbs)
70 +80
1
1.2 (0.9) 2.7 (2) 5.4 (4) 9.3 (6.9) 22 (16) 44 (32) 76 (56) 120 (88) 187 (138)
Carbon steel and alloyed steel
Torque,
Nm (ft-lbs)
8.8 2.3 (1.7) 4.6 (3.4) 7.8 (5.8) 19 (14) 38 (28) 65 (48) 158 (116) 308 (228) 532 (392)
10.9
3.2 (2.4) 6.5 (4.8) 11(8) 26 (19) 52 (38) 91 (67) 222 (164) 433 (320) 748 (552)
12.9
3.9 (2.9) 7.8 (5.8) 14 (10.3) 32 (23.6) 63 (46) 109 (80) 266 (196) 519 (383) 896 (661)
Service
Regular inspection and service of the pump ensures more reliable operation.
Type of service Purpose Inspection interval
Inspection To prevent operational interruptions
and machine breakdown. Measures
to secure performance and pump
efficiency are defined and decided
for each individual application. It
can include such things as impeller
trimming, wear part control and
replacement, control of zinc-anodes
and control of the stator.
Twice a year
Major overhaul To secure a long operating lifetime
for the product. It includes
replacement of key components
and the measures taken during an
inspection.
Every year, under normal operating
conditions
NOTICE:
Shorter intervals might be required for tough operating conditions such as very abrasive
and corrosive applications and media (liquid) temperatures >40°C.
Inspection
Regular inspection and service of the pump ensures more reliable operation.
Maintenance
2125 Installation, Operation, and Maintenance Manual 31
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