Reznor VPS Unit Installation Manual - Manual (Page 36)

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Step 2: Remove fan retaining screws and
unplug from burner box.
Step 3: The combustion fan can now be
detached.
Step 4: Remove the fan orifice plate and
ducted air connection (If fitted).
Step 5: Inspect the impeller and remove any
dust with a soft brush.
Step 6: Remove any dust from fan scroll and
from around the motor.
Step 7: Ensure the impeller rotates freely.
Step 8: Refit components.
4.7 Radiant Tube Servicing
Step 1: Brush any dust from the exterior of the
tubes.
Step 2: Visually inspect inside the tubes. If
they are clean, skip to servicing the reflector.
Step 3: If required the interior of the tubes
can then be cleaned using an industrial
vacuum cleaner, or by using long poles and a
scraper.
4.8 Reflector Servicing
The condition of the reflectors should be
noted. If necessary the reflectors can be
cleaned with a mild detergent. This can
significantly improve the efficiency of the
appliance.
4.9 Cleaning of Vent
Inspect the fresh air inlet duct and vent to
ensure they are free from any blockage or
obstruction. The air inlet terminal and vent
terminal should be inspected to ensure they
are not liable to obstruction.
4.10 Re-commissioning After Service
After servicing has been undertaken, it will be
necessary to re-commission the heater as
detailed in Section 3 of these instructions.