Verification Of Ignition Gap - FULTON Endura EDR-750 Installation And Operation Manual

MAINTENANCE
ƒ Dislodge any particulate matter from the burner
surface matrix, keeping the air nozzle about 2" from the
burner's surface and blowing straight down the surface.
Gently move the nozzle back and forth length-wise
above the surface. Avoid blowing air tangentially across
the surface as this may cause damage to burner surface.
Allow particulate matter to fall from the burner through
the air/gas inlet. A vacuum may be used at the air/gas
inlet to assist in removing particulate matter.
12. If any burner damage is detected, contact your Fulton
Representative.
Reassemble as follows:
1. Reassemble in reverse order.
2. Replace with a new O-ring and apply Superolube
lubricant (Fulton Part number 2-12-000661). Ensure
O-ring is positioned properly between premix elbow
and fan transition.
ƒ O-ring for EDR-750/1000 is Fulton Part Number
2-12-000236
ƒ O-Ring for EDR-1500/2000 is Fulton Part Number
2-12-000235
3. Replace upper and lower burner flange gaskets.
ƒ Burner gasket for EDR-750/1000 is 2 each, Fulton Part
Number 2-12-001270
ƒ Burner gasket for EDR-1500/2000 is 2 each, Fulton Part
Number 2-12-001260
4. Apply belleville washers so that they crown in middle;
do not use nuts or washers that are not provided by
Fulton.
5. Apply anti-seize to burner flange studs and torque to 23
ft-lbs.
6. Torque nuts under the premix elbow to 19 ft-lbs. using a
torque adaptor at 90 degrees from the wrench handle.
7. Reinstall ignitor or new ignitor. See verification of
ignition gap for instructions.
8. Ensure door and all latches are closed when complete.
The louvers in the door provide cooling air to the
electrical panel. The door must be completely closed to
prevent unfiltered air leaking into the cabinet.
4-6
EDR-IOM-2019-0212

Verification of Ignition Gap

– NOTEE: Fulton recommends annual replacement of the
ignition electrode assemblyE: EDR-750/1000 part number
5-20-071003 (all burners). EDR-1500/2000 part number 5-20-
072000 (metal woven mesh burners only).
1. Remove ignition electrode assembly (ignitor). Visually
check that the insulators are clean.
2. For re-installation or installation of a new ignitor, verify
with calibrated calipers that there is a gap between
electrodes greater than 0.100" (2.54 mm) and less than
0.125" (3.175 mm). See Figure 76.
3. Install the ignitor on the burner flange: Apply anti-seize
compound to ignitor screws and tighten in place using
a torque-rated screwdriver to 8 inch-pounds. Use only a
new gasket assembly, Fulton Part Number 2-12-001261.
4. Remove the sight glass, flame scanner, and heat block.
Position a light to shine into the combustion chamber
through the sight glass as required.
5. Verify the burner head to ignitor gap with the use of
a borescope. For borescopes equipped with a mirror,
insert the end straight down into the combustion
chamber at least 6" (152 mm) to view the ignitor from
the side and bottom. For borescopes not equipped
with a mirror, bend and angle the camera to obtain a
necessary view.
6. Visually verify the ignition position relative to the
burner head.
ƒ The negative electrode must not be touching or
resting on the burner head.
ƒ The two electrodes must not be touching. See
Figure 76.
ƒ The burner to ignition gap tolerance is 0.0625"
(1.588 mm) to 0.125" (3.175 mm), it should appear
visually similar to the electrode gap. See Figure 76.
7. Remove the borescope and reinstall the heat block,
flame scanner, and sight glass. Apply new thread
sealant to all applicable connections.
SECTION 4
© Fulton Group N.A., Inc. 2019