Installation, Operation and Maintenance Manual
Unimaster Dust Collectors – Series UMA 40-750
22
INSTALLATION
Secondary or absolute filter monitor
The optional secondary or absolute filter monitor is supplied fitted to the
collector.
For secondary or absolute filter monitor connections and set-up, refer
to Publication 2920.
Weather bends and cowls
The weather bend, if required, is supplied as a separate piece for site assembly.
It should be secured around the collector outlet with self tapping screws and
sealed around the joint. On certain collectors the lifting brackets need to be
removed to facilitate assembly.
Weather cowls on venting type collectors are factory fitted.
Antistatic earthing
It is particularly important on collectors having antistatic
features and/or explosion relief, that the earthing boss
(located adjacent to the symbol, shown opposite) is
properly connected to earth, using the brass screw
provided, to prevent any static build-up.
Explosion relief
Explosion panels, if fitted, must be relieved to a safe area in accordance
with local relevant recommendations. The explosion relief area is
suitable for the collector volume only. Fitment of the collector to larger
vessels will require additional explosion protection to be fitted to the
vessel. This protection should ensure that pressures developed during
an explosion are lower than the collector strength. Consult Donaldson
for specific collector design pressures. Refer to Table 1 for predicted
flame lengths during an explosion.
Refer to Publication 2713 for explosion relief assembly installation.
TABLE 1 – PREDICTED FLAME LENGTHS
(calculation based on VDI 3673)
Type:
UMA 40
UMA 40MM
UMA 70
UMA 100
UMA 150
UMA 250
UMA 450
UMA 750
Flame length:
5.21 m
5.21 m
6.68 m
7.08 m
7.59 m
8.77 m
11.63 m
13.28 m
