Typically, fan failure is due to excessive termination
temperatures and/or a poor maintenance schedule.
Especially in a wood burning application... the fan, as well as the
flue system should be inspected regularly to manage grease and creosote
Start up and normal operation temperatures should be checked at the
initial installation of any fan....
The flue gas temperature before moving through the fan, should not
exceed the recommended 575°F (300°C) intermittent / 482°F (250°C)
The end result from a finely tuned
pizza oven can only be maintained when the same attention and commitment is kept
from the oven's deck to fan.
Regardless of an architect, engineer or oven
manufacturers recommended fan selection... flue height and operating
temperatures should be considered before installation of any fan.
The easiest and most economical way to lower termination temperature is
with RSD Dilution Bolts.
The RSD dilution bolts are used to lift the fan above the chimney or the steel chimney adapter. The dilution bolts are designed to obtain a vibration-free operation as well as to allow dilution air to enter the fan to cool off the flue
gases. Dilution bolts are used for applications where the flue gas temperature, or the temperature of the exhaust going through the fan, exceeds 575°F (300°C).
It is recommended to check
termination temperatures during any fan/motor repair.
Adding dilution bolts could extend a fans operating expectancy.
RSD Dilution Bolts
FSC5 - 5amp Speed Control
FSC8 - 8amp Speed Control
Never have a pizza
oven fan on an "on/off" switch...
|FSC - Fan Speed Control
ENERVEX Fan Speed Control FSC is used in conjunction with all
single-phased chimney fans. The fan speed control is specially
engineered to provide variable speed control of split capacitor motors.
The control is accomplished by reducing the line voltage to the motor
thereby using only the energy required to maintain the desired volume of
air flow (fan speed).
A pizza oven fan must run
during the ovens entire cooking operation... failure to keep the fan on
can result if fan failure.
Use the FSC variable fan
speed control to dial in the perfect draft and maintain a constant oven temperature.
800 685 8263
A chimney fire from an unmaintained fan or flue system can shut a kitchen down.
A costly repair/replacement that can be avoided.
|This larger GSV series fan was
destroyed in a chimney fire.
The extreme heat actually melted an aluminum cover plate
off its impeller wheel.
|This GSV12 Pizza Oven Fan also endured
through a chimney fire. The heat generated within the case acted
like a kiln melting metal that can be seen oozing out the bottom weep
There is a working GSV fan on a separate flue adjacent
to this fan fail, partially seen at bottom right of photo. Notice
the grease/creosote trail dripping over at the edge of the upper fan
An inspection and cleaning was advised as this fan may
undergo the same fate unless properly maintained.
|The Chimney fire through this GSV
melted almost anything aluminum... especially around the top corner
vents and bottom inlet collar.
"nuggets" were found down in the pizza oven as well as on the roof
around the flue system with some melted into the roofing.
How to identify an Enervex fan model when
there is not much left to identify it....
The ID tag, located on the top plate for GSV/RSV fans,
can become illegible from age or after a high heat event.
To determine the correct Enervex fan model and size...
confirm if it has an axial vane or backward curved impeller... and
reference a few housing measurements against an Enervex fan spec chart.
The motor ID will also help... see our parts page for helpful pictures.
This fan (left) was off a pizza oven from a
***** Commercial kitchen would require a GSV series
***** Axial vane would narrow it to 1 of 4 fans...
GSV009 thru GSV016.
***** 15" measured off the housing makes this a GSV012
The clam shell ( BEST ) measurement of about 15" was
used against the fan model chart located here...
B x B chart measurement of 15.37" confirmed this to be
The motor would be a #1200284 J4
When replacing an Enervex
fan, motor or even just parts... especially if there is a recurring issue... we
recommend that the application be checked and the fan re-sized to determine if
the correct fan had been installed in the first place.
On a 2nd Motor?... We
can help, that's our job.
Just because its there... doesn't mean its right.
If a sink is installed where a toilet should be.... would
you just replace it with another sink?
It may work most of the time... but eventually it will turn
nobody likes a crappy job.
Enervex Fans... draft solutions for kitchen and
pizza oven exhaust.
|Is it Exhausto Exodraft or Enervex?
now Exodraft, distributed as Enervex.
Prior to 2012 all fans and parts were identified as Exhausto,
made in Denmark.
Name has changed... parts are the same.
Exhausto Part Identification.
We only supply genuine Exhausto fan motors, fan blades
Motors - Impellers
Oven Deck to Fan
|Enervex Fan Source
MFD - FDDS