Installation, Operation &
Developed in conjunction with the University of Sheffield School of Dentistry
This manual is for the guidance of operators of the above Carbolite
product and should be read before the product is connected to the
1.0 INTRODUCTION: ............................................................. 2
2.0 INSTALLATION AND SAFETY: .................................... 3
3.0 OPERATION: .................................................................... 4
4.0 MAINTENANCE:.............................................................. 7
5.0 ENVIRONMENT:.............................................................. 7
6.0 WARRANTY: .................................................................... 7
7.0 TECHNICAL INFORMATION:........................................ 8
The SafeAir Heatstream:
The SafeAir Heatstream is a portable, light, quiet and reliable heating source for use in the
preparation and fitting of removable and fixed prosthodontics, in dental surgeries, dental hospitals
or for home visits.
The SafeAir Heatstream is designed for softening and melting dental wax and thermoplastic
impression materials used in the preparation of custom registration trays and registration blocks. In
addition, it can be used for heating modelling tools and rim formers when working on the wax
form. Do not insert into the hot air outlet (see Section 3.1 Operator safety).
The SafeAir Heatstream uses a hot air heating system and therefore avoids the potential risks of
setting fire to latex, neoprene or vinyl gloves when using other heating methods.
The SafeAir Heatstream comes with a catch tray that is used for containing any drips and spillages
from the heating process. In addition, the catch tray defines the safe working area of the SafeAir
Heatstream. It is safety interlocked and must be fitted for the SafeAir to operate
The catch tray and its insert can be removed for cleaning and storage.
The SafeAir Heatstream kit contents:
Your SafeAir Heatstream kit
Moulded Storage case.
SafeAir Heatstream with
mains lead and plug.
Catch tray stainless steel
SafeAir Heatstream body
Catch tray stainless
Figure 1. SafeAir Heatstream components.
MF59 – 1.05
2.0 INSTALLATION AND SAFETY:
Unpacking & handling the SafeAir Heatstream
Remove the unit from the storage case, and check that no packing material remains inside the
Do not connect the unit to the electrical supply while it is in its case or while it is inside any other
container. Do not place it in its storage or any other container while the unit is still hot.
Always lift or move the unit by the SafeAir Heatstream main body with one hand and support the
catch tray with the other.
Do not lift or move by holding the tray only. Do not lift it by the supply cable or by the nozzle.
Siting & setting up the SafeAir Heatstream
Place the unit in a well ventilated area, on a work bench or table, in an upright position.
Be aware that the process the unit is used for could trigger nearby smoke alarms.
Note: that although all SafeAirs are tested, before packing, on a short heating cycle; when
it is first turned on a small amount of smoke and a slight burning smell may be noticed, as
organic binders and dust are burned out of the insulation material and from the element.
Keep the unit away from water or other liquids.
Do not place near inflammable materials.
Position the unit at a safe distance from other objects. At least 150mm distance is recommended.
Position the SafeAir so that the mains electrical switch and plug can be easily accessed in the event
of a fault occurring
When in use, the nozzle should face away from the operator and from other people in the vicinity.
WARNING. When the SafeAir Heatstream is switched on the hot air exit nozzle
gets hot, DO NOT touch
Hot air exit nozzle
Figure 2. Warning hot air exit nozzle gets hot – Do not touch
DANGER of electrical shock– read any warning printed by this symbol
MF59 – 1.05
The unit is designed for a 220V to 240V AC single-phase live, neutral and earth supply.
The SafeAir Heatstream is fitted with a lead and standard domestic 3-pin plug, fused at 5 Amps.
Replacement of the plug or fuse should not be necessary, but if required should only be undertaken
by an electrician or suitably qualified person.
It is advisable to connect the unit to the electrical supply through an RCD safety device.
Disconnection from the electrical supply in the event of a fault
The SafeAir is protected by an internal self-resetting thermal cut-out device which operates by
cutting power to the elements if it overheats or a fault occurs. In the event of the thermal cut-out
device operating or a fault occurring, switch the SafeAir off at the mains electrical supply and
See back page for details on contacting Carbolite Engineering Services.
The operator should read this manual and observe all the recommendations in it.
Do not open the unit, insert anything into it, or allow fluids to enter it. Do not operate the unit with
The SafeAir Heatstream contains a live electrical heating element operating at
mains voltage. IN ORDER TO GUARD AGAINST ELECTRICAL SHOCK DO
NOT INSERT TOOLS OR PROBES INTO THE HOT AIR OUTLET. Doing so
presents the risk of irreparable damage to the Heatstream and could result in
The SafeAir Heatstream produces a very high temperature air jet. Avoid burns caused by touching
the nozzle or holding a hand in the hot air stream. Be careful even when wearing gloves, as burns
can be caused by delayed heat transfer through a glove. Do not direct the airflow directly towards
Do not use the SafeAir Heatstream in the presence of potentially explosive vapours, gases, dust, or
use near volatile materials.
Always use in the upright position sited on a table or work bench
Never pick up and use in the hand
The SafeAir Heatstream should only be used for the purposes specified in this manual. Using for
purposes not specified in the manual (see Section 1.1) or for which it was not designed may
present the risk of personal injury.
DO NOT INSERT TOOLS OR OBJECTS OF ANY KIND INTO THE HOT AIR OUTLET!
DO NOT DROP IT !
DO NOT IMMERSE IT IN LIQUID !
DO NOT HANDLE WITH WET GLOVES OR HANDS !
DO NOT OPERATE IN THE PRESENCE OF INFLAMMABLE VAPOURS GASES OR
DO NOT DROP MOLTEN WAX INTO THE ON / OFF SWITCH !
DO NOT ALLOW THE CATCH TRAY TO OVERFLOW BEFORE IT IS CLEARED !
MF59 – 1.05
Fitting the catch tray:
Before the SafeAir Heatstream can be used it must be assembled. Clip the catch tray in to the
SafeAir body; this requires the SafeAir to be held upside down, the tray is then clipped in the
SafeAir body using first a downward movement followed by a slide action into the SafeAir body to
engage the Clip. (See Figure .) Fit the stainless steel catch tray insert after the tray has been clipped
Note the unit will not work unless it is clipped into the catch tray for safety reasons.
WARNING – DO NOT override the safety switch and operate without the catch tray
and slide action into
SafeAir Heatstream body
Take care to
ensure that the
on the tray
through the slot
in the main body
and is not outside
of the slot’s
Figure 3 Assembly of the SafeAir Heatstream
MF59 – 1.05
Make sure the unit is positioned in accordance with section 2.2 and the on/off switch is in the OFF
position before plugging the SafeAir Heatstream in to the electrical power supply. (See Figure 3)
Switch the on/off switch to ON. The switch will glow, the Red light on the front will shine and the
unit will operate immediately. Allow the unit to run for 1 minute before using.
Switch the unit off after use.
Hot air stream
Figure 3. Location of the On/Off switch
Removing the catch tray:
To remove the catch tray, first switch off the unit and unplug from the electrical power supply,
remove the catch tray stainless steel insert. Turn the unit upside down and lift the tab marked “Lift
tab to release tray”, slide the tray forward away from the unit main body. (See Figure 4.)
Lift tab to
Slide tray away from SafeAir
Figure 4. Removing the catch tray.
General operating notes
The unit is designed for intermittent use, but can be used continuously. However, excessive
continuous use will shorten the life of the unit.
MF59 – 1.05
Light weight ceramic fibre insulation can easily be marked by accidental contact. Some fine cracks
may be visible on the surface of the insulation, or may develop in the surface of the chamber due to
the progressive shrinkage of the insulation materials. Cracks are not usually detrimental to the
functioning or the safety of the furnace.
Do not open the unit or attempt repair.
There are no user serviceable parts inside the SafeAir Heatstream, if a repair is required please
contact Carbolite Engineering Services: contact details are at the end of this manual. Please quote
the serial number from the base of the unit.
Switch off and disconnect the unit from the electrical power supply before cleaning.
Main body: clean by wiping with a damp cloth. Do not use organic solvents or abrasive cleaners.
Tray: unclip from main body and remove tray insert for cleaning. Do not use organic solvents or
Do not allow water to enter the unit.
Allow the SafeAir Heatstream to dry before reassembling and connecting to the electrical power
The line plug contains a 5 Amp 25x5mm BS standard fuse; this protects the supply lead. Do not
replace this fuse with one of a higher rating.
Failure of a fuse indicates a fault. Please contact Carbolite Engineering Services if the unit does
not work when switched on.
The SafeAir Heatstream contains electrical parts and should be stored and used in indoor
conditions as follows:
Temperature – 5°C to 40°C
Relative Humidity – Maximum 80% up to 31°C, decreasing linearly to 50% at 40°C
The SafeAir Heatstream is warrantied for 12 months from time of purchase, provided that it is only
used in a suitable environment for the purposes intended. It contains no user serviceable parts and
opening of the case will invalidate the SafeAir’s warranty. Please register your purchase with
Carbolite using the form provided and refer all warranty claims to Carbolite Engineering Services
using the contact details on the back of this guide.
MF59 – 1.05
7.0 TECHNICAL INFORMATION:
220 – 240VAC
Maximum Current ………… 1.4A
Max Power …………….….
Height = 220mm
Width = 220mm
Length with tray = 420mm
Weight = 1.6kg
The products covered in this manual are only a small part of the wide range of
ovens, chamber furnaces and tube furnaces manufactured by Carbolite for
laboratory and industrial use. For further details of our standard or custom built
products please contact us at the address below, or ask your nearest stockist.
For preventive maintenance, repair and calibration of all Furnace
and Oven products, please contact:
Carbolite Engineering Services
Telephone: +44 (0)1433 624242
Fax: +44 (0)1433 624243
Carbolite, Parsons Lane, Hope,
Hope Valley, S33 6RB, England.
Telephone: +44 (0)1433 620011
Facsimile: +44 (0)1433 621198
MF59 – 1.05
Copyright © 2014 Carbolite Limited