Page 32 Reznor, PVE, Installation Manual EN 2019-11, D301113 iss D
Differential Air Pressure Switch
• Check that the tubes are connected and
clear and free from dust.
• Check that they are not kinked or
damaged.
• Check electrical connections are intact.
• Fan and Motor complete
• Check that the fan is secure and rotates
freely without excessive play in the shaft.
The fan blades and motor should be
cleaned using a soft brush.
• Check that the bearings do not show signs
of excessive wear.
It should be noted that these bearings do not
require lubricating.
Main Fan
Remove dust and other foreign matter by
blowing off with compressed air or through
the use of a soft bristle brush.
• Check that the bearings do not show signs
of excessive wear.
It should be noted that these are sealed
bearings if they are worn the whole fan
assembly will require replacement the
following procedure should be carried out.
• Isolate the gas and electrical supplies
• Disconnect electrical connections
• Unbolt and remove the fan from the heater
• Refit fan into heater and bolt in place .
• Turn by hand to ensure free fan rotation.
• Reconnect the electrical connections
• Check fan runs correctly .
Automatic Controls
• Spark Ignition is via an ignition electrode
Ensure that the ceramic insulation material
is not damaged or cracked.
• Flame supervision is via a flame sensor rod.
• Check the flame sensor rod for signs
of pitting or corrosion, ensure that the
ceramic insulation material is not damaged
or cracked.
• Check connections are secure.
Main Governor
To adjust the main governor, using a
screwdriver remove the metal cover to reveal
the adjustment screw, and turn as follows:
• Clockwise to increase pressure.
Anticlockwise to decrease pressure.
It should be noted that full clockwise
adjustment will result in the valve being closed
permanently.
Gas Supply
The gas supply pipe work and fittings should
be inspected to ensure they are free from
corrosion and that where brackets have been
fitted these remain secure and offer adequate
support.
The system should be soundness tested in
accordance with Institute of Gas Engineers
recommendations detailed in Utilization
Procedures IGE/ UP-1 and 2
Test
Test and re-commission as per advised in the
commissioning section.
Report
A full and detailed service report should be
prepared, it is advised that the report is not
completed until the heater has been re-
commissioned, where upon the completed
report can then be run through with the user.
