3.696.5275.210
39
Pressure Safety Valve (Generator) - Replacement
(Fig. 23)
The pressure safety valve acts as a fail-safe for Spirax Sarco Compact Steam Generators.
The valve will open for high pressure to protect the system from explosion.
If the pressure safety valve mounted on the pressure vessel is not functioning correctly
and must be replaced, follow the procedures outlined below.
∆
The combination of electricity, steam, and water can pose a very dangerous
situation. Turn off / disconnect all electric power before attempting any maintenance
procedure.
1. Follow the shutdown procedure to take the unit off-line before attempting to replace
the water pressure relief valve.
2. After assuring that the pressure has been relieved from the tank, disconnect the vent
line leading from the pressure relief valve to atmosphere (usually through the roof),
and via a drip elbow, to drain.
3. Carefully disconnect the pressure relief valve from between the generator vessel and
feedtank.
4. Install the new valve. Follow recommendations contained in the manufacturer’s
documentation, local codes, or accepted contractor practices as to the use of joint
compound or sealer at the connections.
5. Reconnect the vent line leading from the pressure safety valve to atmosphere and, via
drip elbow, to drain.
6. Follow the startup procedures to put the unit back on-line. Carefully check all connections
for any sign of leakage.
Fig. 23
Safety
valve
Pressure Gauge (Clean Steam / Clean Water) - Replacement
(Fig. 24)
If the pressure gauges for the feedwater pipe or clean steam outlet water are not functioning
correctly and must be replaced, follow the procedures outlined below.
∆
The combination of electricity, steam, and water can pose a very dangerous
situation. Turn off / disconnect all electric power before attempting any maintenance
procedures.
1. Follow the shutdown procedure to take the unit off-line before attempting to replace
the pressure gauge.
2. Carefully disconnect the pressure gauge from the pipework. This line should only be
disconnected at the gauge.
3. Remove the gauge from its mounting.
4. Mount the new gauge.
5. Reconnect. Follow recommendations contained in the manufacturer’s documentation.
6. Follow the start-up procedures (page 21) to put the unit back on-line. Carefully check
all connections for any sign of leakage.
Summary of Contents for CSM-C
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