U.S. Boiler Company MegaSteam MST288, Инструкция по установке, эксплуатации и обслуживанию

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5. Adjust oil pressure.
a. When checking a fuel unit's operating
pressure, a reliable pressure gauge may
be installed in either the bleeder port or the
nozzle port. See Figure 25.
b. Locate oil pressure adjusting screw and
turn screw to obtain proper pump pressure,
refer to Tables 11 thru 11B at rear of
manual.
c. To check the cut-off pressure, deadhead
a reliable pressure gauge onto the copper
connector tube attached to the nozzle port.
Run the burner for a short period of time.
Shut the burner off. The pressure should
drop and hold.
d. Remove the gauge and install bleeder port
and/or reconnect the nozzle port line.
water column ("w.c.) (water gauge) in canopy.
These settings will assure a safe and efficient
operating condition. If the flame appears
stringy instead of a solid fire, try another
nozzle of the same type. Flame should be
solid and compact. After all adjustments are
made recheck for a draft of zero inches water
column ("w.c.) in the canopy. Replace plug at
completion.
See Tables 11 thru 11B (at rear of this manual)
for details regarding the overfire pressure when
baffles are both installed and removed.
3. READJUST THE HEAD SETTING.
It might be necessary to move the head forward or
back one position at a time to optimize the smoke
and CO
2
readings. Refer to Burner Manufacturer's
Manual for details.
4. TURN “OFF” BURNER and remove pressure
gauge. Install gauge port/bleeder plug and
tighten. Start burner again.
5. FLAME FAILURE
The MegaSteam™ boiler controls operate the
burner automatically. If for unknown reasons
the burner ceases to fire and the reset button
on the primary control has tripped, the burner
has experienced ignition failure.
H. CHECK FOR CLEAN CUT OFF OF
BURNER.
1. AIR IN THE OIL LINE between fuel unit
and nozzle will compress when burner is on
and will expand when burner stops, causing
oil to squirt from nozzle at low pressure as the
burner slows down and causing nozzle to drip
after burner stops. Usually, cycling the burner
operation about 5 to 10 times will eliminate air
from the oil line.
2. IF NOZZLE CONTINUES TO DRIP, repeat
Paragraph H, No. 1. If this does not stop the
dripping, remove cut-off valve and seat, and
wipe both with a clean cloth until clean, then
replace and readjust oil pressure. If dripping
or after burn
persist replace fuel pump.
Figure 25: Adjusting Fuel Pump Pressure
G. ADJUST OIL BURNER WHILE
OPERATING.
(flame present)
1. ADJUST DRAFT REGULATOR for a draft
of zero inches (water gauge) in the canopy
(see Figure 20) after chimney has reached
operating temperature and while burner is
running. (At least five minutes)
See Tables 11 thru 11B at rear of manual for
details.
2. READJUST THE AIR SETTING on burner
for a light orange colored flame while the draft
in the canopy is zero inches water column
("w.c.). Use a smoke tester and adjust air
for minimum smoke (not to exceed #1) with
a minimum of excess air. Make final check
using suitable instrumentation to obtain a
CO
2
of 11.5 to 13.0% with draft of zero inches
Do not loosen or remove any
oil line fittings while burner is operating.
WARNING
Do not attempt to start the
burner when excess oil has accumulated,
when the boiler is full of vapor, or when the
combustion chamber is very hot.
WARNING
Section VIII: System Start-Up (continued)