User Guide
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Intelligent Purging System (IPS 8) for Ammonia - Technical data, installation and use
© Danfoss | DCS (ms) | 2020.01
BC306932151284en-000201 | 27
Maintenance/Service/
Disposal
Table 05
Maintenance checklist - Perform once a year minimum
1
Use P&I dagram and check that all powered components are working properly
2
Check for alarms in the MCX controller
3
Fans, air filters and fins must be cleaned for dirt and dust
4
Expansion valve must be inspected and must be replaced if damaged
5
Ensure expansion valves sensor bulb has good contact with suction line
6
Replace water in water bubble bath. Check pH level frequently and replace when pH > 12.6
7
Check cover is mounted correctly and all bolts are tightened accordingly
8
Check and verify the amperage of the unit
9
Check for abnormal compressor noises in normal operating conditions (may indicate loose bolts, worn bearings or pistons)
Table 06
Procedure to isolate IPS for servicing
Multipoint
Single point purging from receiver
1
Close all supply lines from the purge points of the ammonia
system.
Do not close any stop valve between IPS 8 and float valve
Restart the controller to force pump-down
2
Restart the controller to force pump-down
Wait 20 minutes
3
Wait 20 minutes
4
Stop the compressor by turning the compressor switch QM1 to
the off position
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)
Close the SVA shut-off valve in the drain line (located under
the IPS 8)
6
Release the remaining system pressure to atmosphere
by opening the SNV drain valve. This can also be done by
attaching a permanent magnet on the AKVA 10 valve for forced
opening
Release the remaining system pressure to atmosphere
by opening the SNV drain valve. This can also be done by
attaching a permanent magnet on the AKVA 10 valve for forced
opening
Disposal of the IPS 8
If an IPS 8 unit is worn out and has to be replaced,
the disposal must be done in accordance with
national legislation and only done by competent
personnel.
