PVI Industries FIREPOWER B40 - Manual (Page 11)

PV500-22A 08-98 11 Section 22A
PVI FIREPOWER

TROUBLESHOOTING SUGGESTIONS
OIL BURNER (con't)
6. OIL HIGH FIRE INPUT RATE CANNOT BE
ACHIEVED:
A. Oil nozzle size too small. Remove nozzle
and check marking. Replace with correct size
nozzle.
B. Nozzle defective. Replace. Nozzle mesh filter
(if supplied) dirty. Clean or replace.
C. Oil supply pressure to nozzle too low.
Readjust.
D. Oil pump defective. Replace.
E. Oil pump coupling loose (slipping) or
defective. Replace.
F. Linkage mechanically binding. Readjust.
G. On modulating burner, oil nozzle return line
metering valve set incorrectly. Readjust to
attain required nozzle bypass pressure.
H. Oil suction line too small or partially
blocked. Make vacuum test while at high fire.
The vacuum should not exceed 10-15 inches
Mercury (HG). Make line size changes, if
required.
I.
Blocked or dirty suction line oil filter.
Replace or clean.
J. Manual valves in suction line not fully open.
Check and correct.
K. Suction line check valve or foot valve
operating incorrectly. Check and correct.
L. Vent system on oil tank blocked, creating
vacuum on tank with high vacuum and
lowered oil flow to burner. Check and correct.
Additional troubleshooting information can be found in the Flame Safeguard bulletin supplied with the burner.