MGN 2800N HP 22
R
OUTINE
S
AFETY
C
HECKS
THESE CHECKS SHOULD BE CARRIED OUT ONLY BY APPROPRIATELY QUALIFIED
AND EXPERIENCED PERSONNEL.
Combustion Air
Check that the plant room is well ventilated at all times and inspect the burner air inlet frequently to
ensure that there is no obstruction to the air flow.
Flame Detector
a)
Remove the UV cell from the burner casing and cover the quartz glass envelope to exclude
light. Care should be taken not to touch the glass.
b)
Establish the electrical supply to the burner and switch on the burner. The burner should go to
lockout at the end of the ignition cycle.
c)
Switch off the burner and the electrical supply to the burner. Replace the UV cell. Establish the
electrical supply to the burner and switch on the burner. Reset the lockout.
Valve Proving System
a)
Introduce a gas leak by slackening the screw in the pressure test point between the main
valves.
b)
Establish the electrical supply to the burner and switch on the burner. The valve proving system
should lock out through falling gas pressure as the burner runs through its start cycle.
c)
Re-tighten the screw in the pressure test point and reset the lockout button on the valve proving
system.
R
OUTINE
M
AINTENANCE
Switch off electrical supply and gas supply to the burner.
Combustion Air Fan
Clean the blades regularly with a stiff brush. Access is obtained through the burner top cover. Care
should be taken to avoid damaging the fan blades. Check that the air inlet into the fan is clean.
Inner Assembly
To open the hinged extension, first remove the gas train multi pin plug form its socket on the control
package, and remove the locking nut securing the hinged extension. Open the hinged extension,
disconnect the ignition electrode lead. Remove the cap head screw securing the inner assembly gas
pipe to the inside of the hinged extension. Carefully withdraw the inner assembly from the hinged
extension.
Air Diffuser And Gas Nozzle
Clean using a stiff brush.
Ignition Electrode
Clean and check the electrode is not cracked or worn. Renew if necessary.
Check the settings of the ignition electrode and flame rectification probe, and reset if necessary.
Replace all components and covers, and secure all fittings. The burner is now ready for operation.
Switch on the electricity supply and gas supply to the burner.
