Flowserve OR 52-7 User Manual download pdf (Page 13)

Electrical Connection – continued –

Wiring diagram OR 52-7

Fig. 4 Shown position of contacts: Alarm 1 and 2, separator OFF and power failure

Notice

Fig. 4 shows an example where the water will be run back to the ship‘s bilge in the event of an alarm

(oil content > 15 ppm) or auxiliary power failure.

With different limit settings alarm contact 1 can, for instance, be used for the ﬁrst alarm and alarm

contact 2 for the main alarm.

For bilge water monitoring a pneumatic three-way valve can be controlled by the alarm contact 2 via a

solenoid valve. If the turbidity of the efﬂuent is too high (alarm caused by ingress of oil or dirt particles

introduced into the system during start-up) the three-way valve will divert the contaminated water to

the bilge tank. The separation continues until the oil content falls below 15 ppm and the cleaned water

can be discharged overboard.

1 2 23

3 3 3 3

L N

0/4-20mA

R 500

2 2 2 2 2

1 1 1 1 1

Alarm2 Alarm1

ORT 7

Basis

ORG

ORT 7 CPU

Separator

GPS

key “+” :

Clw - On

key “-” :

Clw - Off

Clw

24VAC

Clw

- wire no.

External wiring Measuring sensor

Disconnecting switch

External

wiring

Purging valve

To ﬁrst alarm

Attached in housing

cover

Solenoid valve

Three-way valve

Earthing screw

in housing

PE L N

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 39 40

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Flowserve OR 52-7 User Manual Page 13

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