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SV9440, SV9540, AND SV9640 SMARTVALVE™ SYSTEM CONTROLS
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Table 7. Pressure Regulator Specification Pressures (in. wc).
Table 8. Pressure Regulator Specification Pressures (kPa).
MAINTENANCE
WARNING
Fire or Explosion Hazard. Can cause property
damage, severe injury or death.
Do not disassemble the ignition control: it
contains no replaceable components. Attempted
disassembly, repair, or cleaning can damage the
control, resulting in gas leakage.
Regular preventive maintenance is important for
applications in the commercial cooking and agricultural
and industrial industries that place a heavy load on
system controls because:
• In many such applications, particularly commercial
cooking, the equipment operates 100,000 to 200,000
cycles per year. Such heavy cycling can wear out the
gas control in one to two years.
• Exposure to water, dirt, chemicals and heat can
damage the gas control and shut down the control
system.
The maintenance program should include regular
checkout of the control as outlined in the Startup and
Checkout section, and the control system as described in
the appliance manufacturer literature.
Maintenance frequency must be determined individually
for each application. Some considerations are:
• Cycling frequency. Appliances that may cycle 20,000
times annually should be checked monthly.
• Intermittent use. Appliances that are used seasonally
should be checked before shutdown and again before
the next use.
• Consequence of unexpected shutdown. Where the
cost of an unexpected shutdown would be high, the
system should be checked more often.
• Dusty, wet, or corrosive environments. Since these
environments can cause the gas control to deteriorate
more rapidly, the system should be checked more
often.
The system should be replaced if:
• It does not perform properly on checkout or
troubleshooting.
• The gas control is likely to have operated for more
than 200,000 cycles.
• The control is wet or looks as if it has been wet.
Model Type Type of Gas
Nominal Inlet
Pressure Range
Factory Set Nominal Outlet
Pressure Setting Range
Step Full Rate Step Full Rate
Standard, Slow
NAT 5.0-7.0 — 3.5 — 3.0-5.0
LP 12.0-14.0 — 10.0 — 8.0-12.0
Step
NAT 5.0-7.0 0.9 3.5 None 0.7-1.7
LP 12.0-14.0 2.2 10.0 None 1.4-5.5
Two-stage
NAT 5.0-7.0 —
1.7 Low
3.5 High
—
1.5-3.0 Low
3.0-5.0 High
LP 12.0-14.0 —
4.9 Low
10.0 High
—
3.5-5.5 Low
8.0-11.0 High
Model Type Type of Gas
Nominal Inlet
Pressure Range
Factory Set Nominal Outlet
Pressure Setting Range
Step Full Rate Step Full Rate
Standard, Slow
NAT 1.2-1.7 — 0.9 — 0.7-1.2
LP 2.9-3.9 — 2.5 — 2.0-3.0
Step
NAT 1.2-1.7 0.2 0.9 None 0.17-0.48
LP 2.9-3.9 0.5 2.5 None 1.4-1.37
Two-stage
NAT 1.2-1.7 —
0.48 Low
0.9 High
—
0.37-0.75 Low
0.75-1.2 High
LP 2.9-3.9 —
1.2 Low
2.5 High
—
0.9-1.4 Low
2.0-2.5 High