7
FMTD64
5.
Installation Guidelines: [Refer figure 4]
Note:
Before implementing any installations observe the 'Important Safety Notes' in
Section 2. Referring to the installation and maintenance instructions, name – plate and
technical information sheet check the product is suitable for the intended installation.
1.
Check materials, pressure and temperature and their maximum values.
2.
Before installation, flush the inlet drip leg to remove all dirt and oil. Ensure to remove all
protective seals from the trap.
3.
The Forbes Marshall Thermodynamic Trap should be installed in a horizontal plane such that
disc movement happens only in vertically up and down directions.
4.
The horizontal mainline should be provided with proper collecting pocket as provided by
equal Tee should end with a drip leg and at the end of the drip leg Forbes Marshall
Thermodynamic Trap should be fitted. Typically recommended drain pocket dimensions
relative to steam main pipe sizes are given below.
Note:
Condensate should not be drained through a small pipe connection at the bottom of
mainline.
Figure 4 : Recommended installation of Forbes Marshall Thermodynamic Trap on mainline
5.
When a socket weld Forbes Marshall Thermodynamic Trap is being installed the
welding should be in accordance with an approved weld procedure to a recognized
standard.
6.
Isolation valves should be installed to allow for safe maintenance and trap replacement.
7.
Always open isolation valve slowly until normal operation condition is achieved this will
avoid system shocks. Check for leaks and attend if any.
Note:
If the trap is to discharge to atmosphere ensure it is to safe place, the discharging fluid may
be at a temperature of 100°C.
Mains
diameter-D
diameter-d
1
depth-d
2
Upto 100mm
d = D
1
Min d = 100mm
2
125-200mm
d = 100mm
1
Min d = 150mm
2
250 mm & above
d > D/2
1
Min d = D
2
D
d
2
d
1
Steam mainline
FMTD64
Hot condensate
to return or drain
To drain
