Danfoss Blind flange Installation guide

Installation guide

Blind flange for IPS 8

Closing the plant system's flange

Prior to disconnecting the IPS 8 purge unit from the ammonia plant it is important to follow these steps (see ﬁg. 1):

1. Close all supply lines from the purge points of the ammonia system (a)

2. Restart the controller to force pump-down

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3. Wait for 20 minutes

4. Stop the compressor by turning the compressor switch QM1 to the oﬀ position

5. Close the SVA shut-oﬀ valve in the drain line (located under the IPS 8 (b))

6. Release the remaining system pressure to ambient pressure by opening the SNV drain valve (c). This can also be done by attaching a permanent magnet on the AKVA 10 valve for forced opening

7. Close the SNV/AKVA 10 valve before removing the IPS 8 unit

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Fig. 1

SNV

NH₃ bypass for draining purger

Purge line to water tank

SVA

Blind ﬂange (code 084H5053)

Enclosed gasket

Plant piping and ﬂange

Enclosed bolts (x4) Torque: 60 Nm (44.3 ft lb) diagonal tension

Fig. 2