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6. Maintenance
Note: Before performing any maintenance programme observe the "Safety information" in
Section 1.
Safety note: These traps are installed in medium and high pressure steam lines. Personnel
doing the maintenance should wear heavy gloves, long sleeve shirt and other equipment
designed to protect the wearer (goggles, face shield, etc...) in the event of a leak.
6.1 General information
To ensure the device’s long-term, safe operation, an adequate maintenance schedule should be
prepared, involving regular inspection and cleaning, for which some important instructions are given
below. All work must be carried out or be supervised by a suitable competent person.
Before actioning any maintenance on the trap it must be isolated from both the supply line and return
line and any pressure allowed to safely vented to atmosphere. The trap should then be allowed to
cool. In case of dangerous contaminants inside condensate, ensure that piping is completely drained
before removing the trap. When reassembling, ensure that all joint faces are clean.
6.2 Routine Maintenance
-
Clean accurately the insides from sediments and deposits, with regard to seals housings and
mechanical components.
-
Check that the ball float is not demaged and does not contain water; in case of replacement, do
not force the float lever, but remove it by dissasembling the split pin and properly blocking it before
unscrewing the float nut.
-
Check that the mechanism works properly and that the ball plug moves freely to a completely
closed position. To replace the main valve assembly, unscrew the four nuts from the bolts. When
mounting the new set, check its integrity and the position of the cover gasket, and tighten the nuts
uniformly.
-
Tighten to the recommended tightening torques (see table below).
-
Assemble the body correctly (with down arrow) in accordance with float movement, then slowly
open the shut-off valve and gradually reach the normal operating conditions.
-
Check for leaks and correct operation. Check periodically that bolts are properly tightened in order
to avoid leakage. This check must be performed specially after each cycle start and stop of the
palnt. In order to avoid risk of leakage from flanges we recommend the adoption of proper flange
shields. In case of dangerous contaminants inside condensate, check chemical compatibility of
gaskets.
6.3 Use of the manual lever
The manual lever placed on the body of the trap is used to fully open the plug, independently from the
presence of condensate in the unit.
This action allows to verify that flow section is free and allows the removal of any sediment. Operate
the hand lever for a few seconds by turning from the vertical position of normal operation to horizontal
exhaust open. For effective action always bring the lever from one limit position to the opposite (120 °)
without forcing the mechanism. In case of leakage from the lever pivot, tighten the packing nut. If such
action were not enough, it is necessary to replace the seals.
Tab. 1 - Recommended tightening torques
Item
o
mm
N m
Stud
M 16 x 70
Cover nuts
24
90
Seat bolts
13
M 8 x 20
15
