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Standard Pressure Regulator (M Models),
Slow Open (H models), Step Open (P
Models)
1. Check the full rate manifold pressure listed on the
appliance nameplate. The ignition system control
outlet pressure must match the full rate pressure
listed on the nameplate. Adjust the pressure if they
do not match.
NOTE: Slow opening (H models) and step opening
(P models) may take several seconds to reach
full flow rate. M models will take 2 to 3 seconds
to reach full flow rate.
2. With the main burner ON, check the ignition
system control flow rate using the meter clocking
method, or check the pressure using a manometer
connected to the outlet pressure tap on the ignition
system control.
3. Adjust the pressure regulator to match the
appliance rating if necessary. See Tables 2 and 3
for factory set nominal outlet pressure and
adjustment range.
a. Remove the pressure regulator adjustment cap
screw.
b. Using a screwdriver, turn the inner adjustment
screw clockwise to increase or counter
clockwise to decrease gas pressure to the
burner.
c. Replace the cap screw and tighten it firmly to
prevent gas leakage.
4. If the desired outlet pressure or flow rate cannot be
achieved by adjusting the ignition system control,
check the ignition system control inlet pressure
using a manometer at the ignition system control
inlet pressure tap.
Table 2. SV9501/SV9502/SV9602P Pressure Regulator Specification Pressures.
Pressure Range
Model
Type of
Type
Gas
in. wc
Standard,
NAT
5.0-7.0
Slow
LP
12.0-14.0 2.9-3.9
Step
NAT
5.0-7.0
LP
12.0-14.0 2.9-3.9
Model
SV9501/SV9502
SV9602P
The maintenance program should include regular
checkout of the control as described in the Startup and
Checkout section, and the control system as described in
the application manufacturer's literature.
Maintenance frequency must be determined individually
for each application. Some considerations follow:
• Cycling frequency. Appliances that cycle 20,000 times
annually should be checked each month.
Factory Set Nominal Outlet
Nominal Inlet
kPa
in. wc
1.2-1.7
—
—
1.2-1.7
0.9
2.2
Table 3. Capacity of SV9501/SV9502/SV9602P.
Size
(Inlet x Outlet) (in.)
1/2 x 1/2
3/4 x 3/4
SV9501/SV9502/SV9602P SMARTVALVE
5. If the inlet pressure is in the factory specified
nominal range, as shown in Tables 2 and 3,
replace the ignition system control. Otherwise, take
the necessary steps to provide proper gas
pressure to the control.
NOTE: If the burner firing rate is above the maximum
capacity as shown in Table 4, it might not be
possible to deliver the desired outlet pressure.
This is an application issue, not a control failure.
Take whatever steps are necessary to correct
the situation.
MAINTENANCE
WARNING
Fire or Explosion Hazard.
Can cause severe injury, death or property
damage.
Do not attempt to take the control apart or clean
it. Improper cleaning or reassembly may cause
gas leakage.
Regular preventive maintenance is important in
applications that place a heavy load on system controls.
This include applications in commercial cooking,
agricultural, and industrial industries where these
conditions often exist:
• Heavy cycling. In commercial cooking, the operation,
the equipment operates 100,000 to 200,000 cycles
per year. This can wear out a 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.
Pressure
Step
Full Rate
kPa
in. wc
—
3.5
0.9
—
10.0
2.5
0.2
3.5
0.9
0.2
10.0
2.5
Capacity (at 1 inch
wc pressure drop)
3
3
150 ft
/hr (3.7m
/hr)
3
3
300 ft
/hr (8.5m
/hr)
• Intermittent use. Appliances that are used seasonally
should be checked before shutdown and before each
use.
• Consequence of unexpected shutdown. Where the
cost of an unexpected shutdown would be high, check
the system frequently.
• Dusty, wet, or corrosive environment. Since these
environments can cause the gas control to deteriorate
more rapidly, check the system frequently.
Replace the system if any of the following conditions
occur:
9
™
Setting Range
Step
kPa
in. wc
kPa
—
—
—
—
None
None
None
None
Minimum Regulated
Capacity
3
3
20 ft
/hr (0.6m
/hr)
3
3
30 ft
/hr (0.8 m
/hr)
SYSTEM CONTROL
Full Rate
in. wc
kPa
3-5
0.7-1.2
8-12
2-3
3-5
0.7-1.2
8-12
2.0-3.0
Maximum Regulated
Capacity
3
3
200 ft
/hr 95.7m
/hr)
3
3
415 ft
/hr (11.8m
/hr)
69-1270—2
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