Manual

19
CF1000 Burner Manual
Priming the Pump
Verify that the air adjusting cam (Figure 16, item
L) has been set to the initial low-fi re air setting as
described under the ‘Initial Air Settings’ section.
Open the oil shutoff valves in the oil supply line to
the burner.
Set the thermostat (or operating control) to call for
heat.
Close the line switch to the burner. The burner
motor should start immediately.
If the burner motor does not start, reset the motor
overload switch (if so equipped) and press the reset
switch of the burner primary control.
Vent the fuel unit as soon as the burner motor starts
rotating. (For GeniSys 7505 control refer to the
Control manual for Priming the Pump procedure.)
To vent:
Attach a clear plastic tube to the air bleed valve
(Figure 9 or 10 as applies, item p).
Place the end of the tube in a container to catch
the oil. Then loosen the fuel unit air vent valve.
Tighten the air vent valve after all air has been
purged.
IF burner stops during venting —
The burner primary control will lockout if fl ame
is not established within its time limit. This
is typically 15 seconds for R7184B primary
controls, but may be less for other fl ame
supervisory controls.
The burner may lockout several times during the
period needed to purge all the air. To extend air
venting time, press the red reset button for 1/2
second during the prepurge cycle to continue
purging.
IF burner stops after fl ame is established —
additional venting is probably required. Repeat the
air venting procedure.
Disable Function
Any time the motor is running, press and hold the reset
button to disable the burner. The burner will remain off
as long as the button is held and will return to standby
when released.
1.
2.
3.
4.
5.
6.
a.
b.
c.
7.
a.
b.
8.
Cad Cell Resistance Measurement:
If the Beckett 7505 control is equipped with the GeniSys
Display Module, part 52067U, the cad cell resistance
can be selected and read on the LCD screen. Also, the
GeniSys Contractor Tool, part 52082U, can be used for
this purpose.
If these are not available, the cad cell leads can be
unplugged from the control and the resistance measured
with a meter in the conventional way.
Conduct these tests with fl ame present.
Table 6 - 7505 Flame Detection
Flame Detection Range
Normal = 0 to 1600 ohms
Limited = 1600 ohms to lockout
Table 7 - 7184 Status Light Explanation
LED Indicator Status
On Flame sensed
Off Flame not sensed
Flashing
(1/2 sec off - 1/2 sec on)
Lockout/
Restricted Lockout
Flashing
(2 sec off - 2 sec on)
Recycle
Table 8 - 7505 Status Light Explanation
Light
Color
On Continuously Flashing
Red
Restricted (Hard)
Lockout
Soft Lockout
Green
Flame Sensed during
normal operation
(Could be stray light
during standby)
Recycle
Yellow
Control is in Pump
Prime mode or Reset
button currently held
for 15+ seconds.
N/A
Section: Start the Burner