Ika RW 47 digital User Manual download pdf (Page 10)

Motor circuit breaker

The ball race three-phase motor is maintenance-

free. Its attached switching unit features a special

safety device for operation in the case of over-

current and under-voltage (under-voltage release)

to permanently disconnect the motor and avoid

thermal damage. The instrument can only be

started up again by activating the ON switch (A,

see Fig. 1), when power permitted for the motor

is supplied.

You can nd the basic connection and rating for

the motor on its rating plate.

The safety switch SI 400 can also be connected

to the motor switching unit. When used in combi-

nation with an

IKA

stand, this allows the user to

switch on the instrument only at a deﬁned height

in the stand’s working range.

If the stirring unit is operated in such a way that

the instrument’s OFF switch (B, see Fig. 1) is not

accessible, you must add another EMERGENCY

STOP switch to the work area so that it can be

easily reached.

Gear speed change

You can select one between two gear positions (I

and II) using the toggle button (E, see Fig. 1) on

the front of the instrument. You can only switch

to a different cog wheel gear level when the in-

strument is switched off (motor stopped).

Otherwise this may cause damage to the gear

cogs. The arrow on the front foil indicates the di-

rection of the chuck.

Only change the gear posi-

tion at standstill!

WARNING

Speed display

The rotation speed is adjusted by means of the

rotary knob (C, see Fig. 1) on the side of the over-

head stirrer.

Commissioning

The overhead stirrer RW 47 digital must be se-

cured to a stable stand (e.g. R 474 or R 472) with

four screws and wired according to the wiring dia-

gram for proper use. The stirring vessel must al-

ways be well secured for safety reasons. You must

also ensure that the mounting equipment (e.g.

ﬂoor stand, telescope stand) is set up in such a

way that it is not liable to topple and does not start

to move during the stirring procedure. Accessories

must be assembled and wired according to the as-

sembly instructions (Fig. 3 to Fig. 7).

Output shaft

The clamping chuck and output shaft permit clamp-

ing

IKA

recommend stirrer tools (see “Permitted

IKA

Stirrer tools“ section).

The output shaft is not de

signed as a hollow shaft.

Please see section “Safety

instructions“!

If the stirring unit is operated in such a way that the

instrument’s OFF switch (B, see Fig. 1) is not ac-

cessible, you must add an another EMERGENCY

STOP switch to the work area so that it can be

easily reached.

The rotation speed is displayed directly in revolutions

per minute (rpm) on the display (D,

see Fig. 1

DANGER

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Ika RW 47 digital User Manual Page 10

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