Installation, Operation and Maintenance Manual
Unimaster Dust Collectors – Series UMA 40-750
38
Replacing the fan assembly:
If the equipment has been supplied for use in a potentially explosive
atmosphere, then a check should be made to ensure earthing continuity
after replacing each panel.
1 Lift fan assembly into the fan chamber.
2 Loosely replace fan securing bolts.
3 Replace fan outlet grille cover plate.
4 Tighten fan securing bolts.
5 Reconnect motor cable.
6 On UMA 750 collectors only – Refit fork lifting beam, mattress support frame
and door frame centre member.
7 Switch on electrical power.
8 Ensure correct fan rotation (refer to fan rotation label located on the fan
case).
MAINTENANCE
TABLE 2 – TORQUE VALUES FOR BOLTS WITH ISO METRIC THREAD
* For nuts and bolts to ISO 4017.
8 mm
1 mm
20.1 mm²
10.4 Nm
15.3 Nm
17.9 Nm
7 mm
1 mm
28.9 mm²
17.2 Nm
25 Nm
30 Nm
8 mm
1.25 mm
36.6 mm²
25 Nm
37 Nm
44 Nm
10 mm
1.5 mm
58 mm²
50 Nm
73 Nm
86 Nm
12 mm
1.75 mm
84.3 mm²
86 Nm
127 Nm
148 Nm
14 mm
2 mm
115 mm²
137 Nm
201 Nm
235 Nm
16 mm
2 mm
157 mm²
214 Nm
314 Nm
368 Nm
18 mm
2.5 mm
192 mm²
306 Nm
435 Nm
509 Nm
20 mm
2.5 mm
245 mm²
432 Nm
615 Nm
719 Nm
22 mm
2.5 mm
303 mm²
592 Nm
843 Nm
987 Nm
24 mm
3 mm
353 mm²
744 Nm
1060 Nm
1240 Nm
27 mm
3 mm
459 mm²
1100 Nm
1570 Nm
1840 Nm
30 mm
3.5 mm
561 mm²
1500 Nm
2130 Nm
2500 Nm
Nominal
diameter
Torque value*
Grade 8.8
Thread
pitch
Stress
area
Grade 10.9
Grade 12.9
