Spirax Sarco SGC40, Инструкция по установке и обслуживанию

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IM-P130-29 CMGT Issue 7 12
Fig. 2
Notes:
1. Before actioning any installation observe the 'Safety information' in Section 1.
2. Apply the appropriate grease to SGS40 stainless steel screwed units to avoid
cold welding.
Warning
The gaskets used in these units contain thin stainless steel support rings which may
cause physical injury if not handled and disposed of carefully.
Under certain conditions corrosive elements in the flow media can affect the inside
face of the window, particularly where caustic alkali and hydrofluoric acid are
present. Mica glass protectors must be used to protect the glass when the unit is
used on steam applications or when the ph is higher than ph9 or when the temperature
is above 150 °C with a ph greater than ph7 (see section 2.1).
Regular inspection of the glass to check for thinning of the window must be
undertaken based on an assessment of your system. If there is evidence of thinning
or erosion damage, then the window should be replaced immediately. Always wear
eye protection when viewing the contents of the sight glass.
Reasonable steps should be taken to protect personnel from injury in the unlikely
event that the window breaks.
Applications that incorporate sight glasses should have stop valves fitted on both the inlet
and outlet. It is imperative that the upstream stop valve is closed first in order to prevent
over pressurisation.
Sight glasses must be fitted on the outlet side of a steam trap in either a horizontal or
vertical pipeline in accordance with the flow arrow on the body. Warning: when the optional
visual flow indicator flap is requested for horizontal flow applications the hinge must be
placed uppermost otherwise it will not work for the purpose intended - See Figure 2. Where
the trap is a blast discharge type e.g. thermodynamic, the sight glass must be fitted at least
1 m (3 ft) from the trap. This is to ensure that the glass is not subjected to thermal shock
or pressure.
Ensure access is available for maintenance purposes.
3. Installation
Hinged at the top