Rota-Grate
®
and Automated Rota-Grate
®
Magnetic Separators
5
Install the magnetic separator in the desired
location in the vertical closed chute or duct.
Installation is intended to be made by a flange
attachment to the inlet and outlet flange of the
grate housing. Hole size and spacing will be
supplied to the customer’s specification, or flanges
will be furnished without holes if none
are specified.
Locate the unit between the flanges of the chute
work, and transfer holes from the flanges of the
chute work onto the flanges of the self cleaning
grate. Install a gasket between each pair of mating
flanges to insure a dust-tight seal.
Grate position
The Automated Rota-Grate is designed for
installation in vertical or inclined flow systems,
but the unit itself must be installed horizontally,
as shown. For optimum iron separation, a vertical
section at least as high as the dimension listed in
Table 1 should be used above the inlet of the grate
housing (see Figure 2 and Table 1).
The Automated Rota-Grate is designed for a free
falling product. A product shut off valve should be
located upstream from the Rota-Grate to prevent
potentially destructive material backup.
Discharge Chute
Space must be provided so that iron discharge
can fall clear of the discharge chute and not back
up into the unit. Continuation of the 45 degree
discharge chute to a collection point is the most
common method of eliminating this waste.
pneumatic Hook‑Up
An 80 psi (5.3 bar) air supply is required to operate
the pneumatic Automated Rota-Grate. Connect
the air supply to the inlet of the air preparation unit.
Wiring
See Figure 3 for wiring the Eriez Automated
Rota-Grate. Also refer to the electrical outlet and
schematic drawing, 4N-9608105, packed with
the unit.
Connect the two AC leads from the AC power
source to terminals 1 and 2 in the control box.
Make all corresponding connections between the
control box location and the junction box on the Self
Cleaning Rota- Grate, as shown in Figure 3.
Motor
Wiring
Connect three-phase power supply so rotation
of the magnet reel corresponds to the direction
arrow on housing.
GRATE SIZE
HEIGHT (Y) MINIMUM
IN
MM
IN
MM
12 Dia. x 14
305
x
356
14
356
16 Dia. x 18
406
x
457
18
457
22 Dia. x 24
559
x
610
24
610
TAblE 1
Y
FIGURE 2
FIGURE 3
3
4
5
6
7
8
9
10
3
4
5
6
7
8
9
10
SOL 1A
1LS
SOL 1B
2LS
JUNCTION BOX
CONTROL BOX
