Alfa Laval S 921 - Page 52

8 Technical Reference 8.4 Interface Description
8.4.6 Remote start
This machine may be started from a remote
location under the following conditions;
• First start after any kind of service or manual
cleaning must be supervised locally in order to
ensure that no mistakes has been made during
assembly.
• The unbalance sensor is mandatory for remote
start.
• The installation must include equipment to
prevent unintentional start-up from remote
location when the machine is disassembled.
• The installation must include equipment to
prevent unintentional start of process flow
from remote location when the machine is not
properly connected to the piping.
8.4.7 Handling of connection interfaces
Electrical connections
701 Separator motor.
The separator is equipped with a 3-phase DOL
- (direct on line) started motor. The separator
canalsobestartedbyaY/Dstarter,butthen
the time in Y-position must be maximized to 5
seconds.
There shall be an emergency stop cir
cuit
designed according to EN 418 and a p
ower
isolation device according to EN
1037.
There shall be a start button close to the
separator that shall be used for first start after
assembly of the separator.
There should be a counter to count number of
running hours.
There should be a curr
ent transformer to give
an analogue signal t
o the control unit about the
motor current.
185