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Note: Before actioning any maintenance program observe the “General safety
information” in Section 1.
6.1. General Information
Due to the specific set-up of the trap, no special maintenance is required.
The trap operates correctly when the condensation is discharged in blasts, with a time interval
between discharges during which the trap must be perfectly sealed. Inspect and clean the
strainer ensuring that it is not blocked by any deposits or scaling, and replace if needed.
6.2. Replacing internal parts
Warning: before to undertaking any maintenance on the trap it must be isolated from
both the supply line and return line and any pressure allowed to safely normalise to the
atmosphere. The trap should then be allowed to cool.
1.
Open the trap by unscrewing the 6 nuts using a 30 mm spanner.
2.
Dismantle the trim set using the following spanners:
Trim set A
32 mm spanner
Trim set B
36 mm spanner
Trim set C
41 mm spanner
Trim set D
50 mm spanner
3.
After cleaning all joint faces, fit the new unit and tighten with a torque of about 140 N m.
4.
Clean the gasket faces and close the unit, replacing the gasket if it is damaged and tighten in
a crossed sequence.
5.
To replace the strainer, unscrew the screws using a 19 mm spanner; remove the cover and
withdraw the screen and the gasket; fit the new screen and gasket; tighten the two screws
with a torque of about 50 N m.
6. Maintenance
The thermodynamic steam trap discharges condensation with a blast at a very high temperatu-
re; if the trap is to discharge to atmosphere ensure it is piped to a protected and safe place.
5. Operation
4. Commissioning
After installation or maintenance, check that the system works correctly and test all the alarms
and protections devices.
After 24 hours from the start up it is advisable to check the cover nuts tightening acting with a
torque of 100 N m.
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