B&C Technologies IM Series Industrial Ironer - Manual (Page 19)

3. Heating System
The ironers can be ordered for the following heating systems:
• High Pressure Steam
• Hot Oil / Thermal Fluid
4. Drive System General
The heavy-duty ironer is driven by a variable speed gear drive or a variable electric drive
for the multi-roll units. The power is directed to a slip-on gear box on each roller and in
feed conveyor through a high-performance V-belt system. The required in feed speed can
be adjusted at the right control panel and can be monitored with the rate meter display.
Programmable speed selectors are available as an option. The selectors can only be modified
by trained personnel.
5. Heating Chests
Heating chests are constructed of heavy gauge boilerplates with stiffeners to take the re-
quired forces. The contact surfaces of the chests are ground and polished. The chests are
adjustable and are mounted on rollers integrated in the main frame.
6. Bridging Chests
The heated bridging chests (gap pieces) are specially designed to prevent a loss of heating
efficiency between the modules and ensure a high finish quality due to the uninterrupted
heating surface by steam or oil passing through the bridging chest. Steam-heated chests
consist of a copper heating coil embedded in the chest. Thermal Oil heated chests are of
a special welded design to optimize heat transfer. The surfaces of the bridging chests are
ground and polished.
7. Rolls
The rolls consist of a perforated, large-diameter cylinder covered with felt or nomex padding.
Each roll has its own vacuum fan that ensures the efficient removal of condensation. Each
vacuum fan can be individually adjusted through a butterfly flap located in the exhaust duct
portion of the module. Through this individual adjustment, a constant temperature can be
maintained at the padding. Each roll is mounted on the left side to a swing bracket with a
self-aligning bearing. The right side is mounted to a slip-on gearbox integrated in a swing
bracket. All available padding can be supplied to meet customer specifications.
8. Roll Procession
The speed difference between rolls is created by the variable pulley belts on the drive side of
the slip-on gear boxes (similar to the gear box on the infeed belts). The procession between
rolls should only be modified by trained personnel.
9. Roll Lifting Mechanism
Each roll can be individually raised and lowered through a pneumatic cylinder arrangement.
The controls are located on the left hand control panel. After shutting off the power or in case
of a power failure the rolls are lifted automatically. A safety device built into the cylinders
prevents the rolls from dropping in the event of a failure in the compressed air system. This
safety device prevents damage to the padding. The pressure between roll and chest is created
by the pneumatic cylinders. A pneumatic control valve, located on the right side of the first
9