Installation - Spirax Sarco 211 Installation And Maintenance Instructions Manual

Note: Before actioning any installation observe the 'Safety information' in Section 1.
Referring to the Installation and Maintenance Instructions, name-plate and Technical Information
Sheet, check that the product is suitable for the intended installation:
3.1
Check materials, pressure and temperature and their maximum values. If the maximum
operating limit of the product is lower than that of the system in which it is being fitted,
ensure that a safety device is included in the system to prevent overpressurisation.
3.2
Determine the correct installation situation and the correct direction of fluid flow.
3.3
Remove protective covers from all connections.
3.4
The trap must be installed with the body upright so that the bucket is rising and falling
vertically. The inlet should be at the bottom with the trap installed below the drain point
so that a water seal can be maintained around the open end of the bucket.
Inverted bucket traps do not permit rapid release of air. On process applications, in
particular, this can lead to slow warm-up times and waterlogging of the steam space. A
separate external air vent is therefore required in parallel to vent air efficiently. Any bypass
should be positioned above the trap. If it is below, and is leaking or left open the waterseal
could be blown away leading to steam wastage. Where inverted bucket traps are fitted
in exposed conditions the possibility of freezing damage can be reduced by
thermal insulation.
On some sizes of flanged traps the inlet and outlet flanges are formed from the
body and cover castings and therefore have tapped holes to receive studs. The stud holes
are tapped UNC for ANSI flanges and tapped metric for BS 4505 / DIN flanges. Ensure
that you have the required tools available before undertaking installation.
3.5
If the trap is installed on a superheated steam system application, then a non return
valve should be fitted on the trap inlet, to prevent the trap from losing its waterseal.
Priming of the trap with water may be required before commissioning.
3.6
Open isolation valves slowly, until normal operating conditions are achieved.
3.7
Check for leaks and correct operation.
Note: If the trap is to discharge to atmosphere ensure it is to a safe place, the discharging fluid
may be at a temperature of 100°C (212°F).
After installation or maintenance ensure that the system is fully functioning. Carry out tests on
any alarms or protective devices.
6

3. Installation

4. Commissioning
IM-S03-08 ST Issue 3