Spirax Sarco IBP21, Инструкция по установке и обслуживанию

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IM-F01-30
ST Issue 5 9
4. Maintenance
Note: Before actioning any maintenance program observe the 'Safety information'
in Section 1.
4.1 General information
Maintenance can be completed with the trap in the pipeline. It is recommended that new
gaskets and spares (see Section 5) are used whenever maintenance is undertaken. Ensure
that the correct tools and necessary protective equipment are used at all times. When
maintenance is complete open isolation valves slowly and check for leaks.
Note:
The sensor should be removed periodically to inspect and clean the insulation as a build-
up of pipeline residue may affect the function of the sensor. Frequency of inspection will be
dictated by condensate quality. If pitting of the insulation occurs, a new sensor should be fitted.
More precise service information is given in the following Sections:
IBP21
, IBP21S , IBP30 , and ISM21 See Section 4.2
ITD32
See Section 4.3
IFT14 See Section 4.4
4.2 IBP21, IBP21S, IBP30 and ISM21 service information
How to fit flat screen, capsule and seat assembly (IBP21, IBP21S and ISM21)
Remove cover nuts and bolts. On the IBP21 and IBP21S undo the clip holding the capsule on
to the mounting frame, remove capsule and spacer plate and unscrew valve seat from the body.
Replace new gasket, mounting frame and valve seat using a suitable thread sealant such as
STAG, ensuring the flat strainer screen is centralised during tightening to the recommended
torque (see Table 2). On the ISM21 the element assembly can be removed by undoing the
seat. Refit new capsule and spacer plate and then replace clip or complete new element.
Ensure that the flat screen is located centrally. Fit new cover gasket and retighten cover nuts
evenly to the recommended tightening torque.
How to fit Y-type strainer screen
If a waterlogging sensor is fitted, it will be necessary to disconnect the wiring at the terminal
block. Undo and remove the sensor adapter (the sensor does not have to be removed from the
adapter). Clean or replace the screen as required. Replace the screen and sensor assembly,
ensuring that the screen is located centrally, and a new gasket is fitted (IBP21S and IBP30
only), but ensure that the joint faces are clean. A fine smear of Molybdenum Disulphide grease
should be applied to the first few threads. Tighten to the recommended tightening torque (see
Table 1). Reconnect the waterlogging sensor as described in IM-P087-34.
How to replace or clean the sensor
If a waterlogging sensor is fitted, it will be necessary to disconnect the wiring at the terminal
block. Remove the sensor from the adapter. This can be done in line so long as the adapter
is securely held in place. Clean the sensor insulation. If pitting of the insulation occurs, a new
sensor should be fitted. Replace new sensor and screw into the adapter, ensuring the gasket
is centralised. Tighten to the recommended tightening torque. Reconnect the waterlogging
sensor as described in IM-P087-34.
Ensure that any sensor fitted to the IBP30 has a letter 'L' stamped on the hexagonal face.
Sensors with the letter 'L' on the hexagonal face must not be fitted to IBP21, IBP21S or
ISM21 traps.