PTT electric holding transport furnace up to 900 °C

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The PTT holding electric transport furnace is suitable for transporting the melt between the melting furnace and the workplace where the melted metal is cast. The maximum temperature in the heating space is 900 °C. The cast iron collar ensures a long life for the crucible.

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Benefits

Easy to install, easy to control
24-month warranty
Even temperature load for the crucible
Efficient use of heating output
Easy replacement of both the heating elements and crucible
Low operating costs
24-month warranty for the first set of heating elements

Charge treatment technology

The furnace is intended for the transport (using a forklift) of melts of aluminium alloys between the melting furnace and the workplace where the melted metal is cast.

Furnace type	Capacity kg Al	Tmax (in furnace chamber) °C	Tmax for long-term operation °C	Recommended operating temperature range (in crucible) °C	Crucible type Noltina	Volume of crucible l	Loading height* mm	External dimensions (w × h × d) mm	Input kW	Weight kg	Voltage V	Protection A
PTT 300/09 Mk. II	275	900	800	650 - 850	BU 300	110	1040	1125x1285x1125	22	660	400	40/3
PTT 400/09 Mk. II	320	900	800	650 - 850	BU 350	135	1140	1125x1485x1125	22	775	400	40/3
PTT 500/09 Mk.II	480	900	800	650 - 850	BU 500	180	1090	1285x1635x1285	27	880	400	50/3
PTT 650/09 Mk.II	590	900	800	650 - 850	BU 600	220	1290	1285x1835x1285	27	1115	400	50/3
PTT 800/09 Mk.II	970	900	800	650 - 850	BN 800	300	1390	1400x1935x1400	38	1200	400	63/3

* The distance from the floor up to the top edge of the crucible’s protective collar.

Standard equipment

Ht40T controller (3 programmes with 10 steps each)
Ht700 limit unit
Resistance heating (heating spirals)
Insulation using refractory concrete castable shaped blocks, a mineral-fibre mat, and microporous insulation
Protective collar of crucible made from grey iron
Manual lid
Emergency drain at the bottom of the furnace, with flap
Limit thermocouple of the S type and control thermocouple of the K type
Contactless (proximity) switching relay for noise-free operation – SSR
Residual current protector
Braces at the bottom of the furnace to ease manipulation using a forklift truck for the PTT 400/09 and higher cubic capacities
Connection between the furnace and switchboard, within a metal hose with a plastic protector, length of up to 5 m
The cable is provided with a connector for quick connection to and disconnection from the furnace
Wall switchboard

Optional accessories available at additional cost

Crucible
Charge thermocouple of the K type with protective tube
Thermocouple of the K type in the wall of the crucible
Optical indication of the state of the heating elements (spirals)
System to check for cracks in the crucible
Measuring loop calibration (thermocouple + controller)
Connection of the furnace with the switchboard, within a metal hose with a protective metal sheath. The metal hose with a protective metal sheath on the surface always should be used for hoses with lengths exceeding 5 m.
Signalling when the temperature drops below 650 °C

Note: When combining optional accessories available for an extra charge, please consult with our technical office.