ESH150
–3PE~400V
Service manual
20/56
Ref. NR-000144-ENG
Follow the torques for threaded joints listed in
according to thread sizes of hose fittings to ensure their
proper assembly.
There is also an alternative procedure to obtain an
equivalent torque without using special tools: joint both
ends of the hoses to be connected, tighten a swivel nut
by hand (without using spanner) until there is resistance
on the nut. Fit two spanners (1) on the fixed ends of the
hoses and turn the swivel nut with a third spanner (2) as
many flats from wrench resistance (FFWR) as indicated
in
Table 1. Tightening Threaded Joints
THREAD
SIZE
TORQUE
Nm
FFWR
1/2”-20
23
2 (or 120º)
9/16”-18
30
1-1/2 (or 90º)
NOTE
:
1 FFWR corresponds to one complete shear of a flat marked with red between
swivel and fitting or else 60º.
METHOD OF THREADED UNION OF THE HOSES