Routine Maintenance - Eclipse Combustion RAH Series Manual

4.0 Start-Up And Adjustment
Start Spark
Set Pilot Flow
Set Gas Flow
Check All Settings

5.0 Routine Maintenance

Motor Lubrication
Ignition Plug/Flame Rod
Energize the ignition spark. Do not touch the ignition rod, ignition wire, or trans-
former while the spark is energized, or you will get a shock.
Open all pilot gas valves, including the handle of the pilot cock, Figure 6. The pilot
should light.
Turn the pilot adjusting screw to produce a bushy blue flame that provides a flame
monitoring signal strong enough to reliably open the gas shut-off valves.
Measure the gas differential pressure as
shown in Figure 7.
With the gas control valve at low fire, open all
main gas valves. The burner should light with
a stable, blue low fire flame that extends
evenly down the burner length.
Drive the control valve to high fire and adjust
the gas adjusting valve to produce a pressure
drop that corresponds to the desired high fire
rate, as shown in Fig. 1.
When setting high fire, be sure the flame does
not impinge on anything downstream of the
burner. To shorten the flame length for a given
gas input, increase the air pressure drop as
described above.
Return the burner to low fire and check to be sure that the burner remains lit with a
stable flame that extends down the burner length. Cycle the burner between low and
high fire several times, checking pressure drops and flame lengths.
Oil the blower motor according to the manufacturer's instructions as printed on the
motor label.
Ignition plugs and flame rods wear out over long periods of normal burner operation.
Eclipse recommends that the user keep at least one of each in stock at all times to
prevent nuisance shutdowns.
7
(continued)
Figure 8–Butterfly in
Check Valve Line
Butterfly Valve On
640, 680 & 720
TAH-R Burners
Check
Valve