SEHO MR36/12

Model:	SEHO MR36/12
Category:	Soldering - Reflow
Condition:	used
Location:	Sachsen, Germany
Offered by:	Lagerwerk GmbH
	Contact Supplier

SEHO Systems GmbH Reflow soldering system Oven, MaxiReflow 3.6 12, MR36 12

Model: MaxiReflow3.6/12
Type: MR36 12
Year of manufacture: 2007

General information:
The MaxiReflow 3.6-12 is a highly developed reflow soldering system designed for the demanding requirements of modern electronics production. This machine impresses with its high efficiency and precision, making it the ideal solution for the series production of printed circuit boards. The MaxiReflow 3.6-12 guarantees outstanding soldering quality thanks to its precise temperature control and even heat distribution.

Thanks to its robust design and the use of first-class materials, the machine offers a long service life and requires only minimal maintenance. In addition, the MaxiReflow 3.6-12 is equipped with user-friendly interfaces and intuitive operation, which simplifies integration into existing production processes.

With its high level of flexibility, the MaxiReflow 3.6-12 is able to process a wide range of PCB sizes and types, making it ideal for the diverse requirements of the electronics industry. The efficient extraction system also ensures a clean working environment and minimises emissions.

Configuration:
KE68001112 - MaxiReflow 3.6 frame, running direction L-R, in RAL 9002/5012
    The machine frame of the MaxiReflow is a solid and compact steel construction for minimised space requirements.
    Features:
    - Length of the heating cassette 3.6 m
    - Total length of the system: approx. 6.50 m
    - Inlet height: 840 ± 25 mm
    - Transport direction from left to right
    - Powder coating in RAL 9002/5012
    DE: Wiring according to European standard (230/400V)
KE680025122.DE - ADC1 (‘asymmetric dual conveyor’), 1 chain centre support, adjustment via rocker switch, pin chain 3 mm
    - Maximum usable width of one track is 415 mm;
    - Transport profiles: front (first profile) fixed, second and third profiles connected and movable together, fourth profile also movable
KE68004410.EN - Heating cassette MaxiReflow 3.6/12 zones
    The process length of 3.6 m is divided between the individual zones as follows:
    Preheating:
    - 8 zones of 300 mm each
    Peak zone:
    - 4 zones of 300 mm each
KE68005110.EN - Closed cooling module 1200 mm, 2 heat exchangers, for cooling water on customer side
    The cooling of the PCBs is realised by a 1200 mm long cooling module in which two heat exchangers are positioned. These in turn are supplied with cooling water.
    Rule of thumb for consumption: 8 l/min at flow temperature 8 °C, 10 l/min at flow temperature 10 °C, 12 l/min at flow temperature 12 °C.
    Features:
    - Length of the cooling module: 1200 mm    
    - Control of the circulating air temperature in the cooling module by regulating the inflow
    - Circulation through two fan wheels
    - Heat exchanger positioned at the bottom of the cooling module, removable
    - Nozzle fields in the cooling module divided and removable for maintenance purposes
KE68001312 - Doors + bonnets for the frame in RAL 9002/5012
KE68009140 - SMEMA extension to inlet height 940 +/- 25 mm
KE68007120 - N2 operation MR36
    The system is fully prepared and set for nitrogen operation at the factory.
    The nitrogen supply line (6 - 8 bar, R 1/2‘’) can be connected directly to the system.
    Features:
    - Gassing into the volume of the heating cassette, in the inlet tunnel, in the cooling module and at all axis passages of the fan motors.
    --> Note the defect!
KE68008521 - Calculator German Maxireflow
KE68008130 - Acoustic alarm function (‘horn’)
    In addition to the red warning light, an acoustic signal is emitted in the event of an alarm.
KE68008110 - Wind vane relay for monitoring the extraction system
    A differential pressure switch is used to monitor the extraction performance of the system.
    An alarm signal is generated if the pressure falls below a limit value.
KE68008231 - Air speed monitoring
    The speed of each individual fan in the heating and cooling area is monitored.
    An alarm is generated automatically in the event of a deviation.
KE68008230 - Air speed monitoring continuously adjustable
    By default, all fans (heating and cooling area) of the system are operated at the same speed. The option includes two additional frequency inverters, which can be used to define two further groups of fans with the same speed.
    Example: Fan group 1 = preheating, fan group 2 = peak range, fan group 3 = cooling.
    A maximum of 6 such groups can be controlled by the software.
    Restriction: A frequency inverter can control a maximum of 10 fans in the heating range.
    Features:
    - Two additional frequency inverters (FI)
    - Max. 10 fans can be controlled per FI
    - A maximum of 6 groups of the same speed available

Technical data:
Permitted tolerance: +/- 5%
Average consumption: max. 1/5 of the connected load
Compressed air connection: R 1/4’ 6bar
Nitrogen connection: R 1/4’
Nitrogen pre-pressure min. / max.: 6/8 bar
Nitrogen consumption (under maximum load): <20m³/h
Nitrogen consumption (under maximum load): <200ppm
Extraction system: fire-protected
Diameter of extraction nozzle: ø 200mm
Number of extraction nozzles: 1
Extraction capacity per nozzle standard: 200 - 300m³/h
Extraction capacity per spigot with cooling unit: 300 - 500m³/h
Extraction capacity per nozzle with fan cooling: 1200 - 1500m³/h
Length of the machine: 6520mm
Width of the machine: 1500mm
Height of the machine (standard): 1490mm (± 25mm)
Height of the machine (Smema): 1590mm (± 25mm)
Total weight of the machine: 3400kg
Airborne noise of the machine: <60dB
Max. PCB width: 500mm
Min. PCB width: 50mm
Free space above circuit board: 30mm
Clearance under PCB: 35mm
Edge clearance on underside of PCB: 5mm (or 3mm)
Centre support (infinitely variable height adjustment): 0 - 8mm
Transport speed: 0.2 - 2.0m/min
Heating zone length: 3750mm
Preheating zones top / bottom: 8/8
Peak zones top / bottom: 4/4
Heating time: approx. 20min
Cooling zone length: 1350mm

Electrical data:
Rated voltage: 230/400V AC
Frequency: 50Hz
Rated power: 116kW

Accessories:
PC Software Reflow PCS196 (Stick + CD)
Documentation, in duplicate paper version, in German
Shuttle All in one PC with software

Note on the defect:
The residual oxygen value of the stove is around 60,000 to 80,000 ppm. No leaks were detected on the oven - even after an intensive check with smoke cartridges.