Elmo Rietschle R-WPB - Manual (Page 15)

Rietschle Thomas GmbH + Co. KG page 15 / 23
• Blowers must not be operated when the suction part
is open because the rotors are accessible. There is a
risk of touching them.
• Do not operate the machine if any of its guards is
damaged (belt guards, fan guards, etc.).
• Use protective gloves – the machine temperature is high
when it is in operation or before it cools down.
• Use ear protectors when the acoustic enclosure is open
or the machine is operated without such a hood.
• If the blower set is equipped with a acoustic enclosure,
such a enclosure also serves as a solid guard cover.
Separate pulley guards are not installed, which results
in a residual risk – possible injury. It is thus forbidden
to operate the aggregates if the enclosures are open.
• Since the pendulous motor frame is secured in its
working position only by a belt(s), be very careful when
standing in its working space. The position of this
frame could change suddenly if a belt broke.
• Before maintaining and/or repairing the machine, you
must disconnect it from the power supply and secure it
against being turned on again.
• When detergents are being used, there is a risk of
cauterizing or poisoning by fumes inhalation. Observe
the directions and instructions of the detergent
Manufacturers!
Excessively hot surfaces:
• The blower;
• The discharge silencer;
• The discharge pipeline; and
• The safety and starting valve.
• Ear protectors; and
• Working gloves.
Consumable spare parts (filter inserts, belts, non-return
valves, and/or oil) are delivered on customer request. They
are not included in the standard delivery. The production
plant repairs its own blowers. We can deliver sets of spare
parts for individual blower types to external service
organizations. Fixtures are necessary for both smooth
assembly and disassembly. Bearing replacement is usually
the main reason for repair. If any specific problem arises,
contact the Rietschle Thomas service department.
Parts and material necessary for routine service and
simple repairs of the blower set:
a) Filter inserts;
b)
V-belts – the belt specification is stated in the
Certificate of Quality and Completeness; and
c) Non-return valves.
6.
TAKING THE MACHINE OUT OF
OPERATION – WASTE DISPOSAL
Packaging
All packaging material is environmentally friendly and
recyclable. The cardboard parts were made from waste
paper. The wooden parts were not treated. The pallets can
be sold to the nearest organization dealing in pallet
purchase. The plastics are marked as follows:
>PE<
polyethylene, e.g., the plastic film.
Base unit and compact unit
• Spare parts and/or the blower must be disassembled and
cleaned of petroleum products. Dispatch the parts
sorted according to the used materials for professional
disposal.
• If the blower is still functional, you can offer it to the
production plant for redemption by mutual agreement.
Operating oils
The recommended oils contain no polychlorinated
biphenyls (PCB); for more information, see the safety data
sheets of the oil.
7. N
OISE LEVEL
7.1 General
The equivalent levels of the sound pressure A (measured
at the workplace of operators by using the A weight filter
in accordance with the EN ISO 11200, ISO 7574, and ISO
3740 Standards) are stated in the value tables in the
Catalogue of Rietschle Thomas blower aggregates. The
stated values express the actual values of noise levels of
blower sets with or without acoustic enclosures.
7.2 Vacuum blower sets
With respect to blowers working at vacuum, you must take
into account the fact that the catalogue values of the
equivalent levels of the sound pressure A apply only when
air is diverted by the discharge pipeline from the area
where the blower set operates or when an additional
discharge silencer is installed behind the outlet flange. If
air is discharged into the surroundings behind the
discharge flange of the blower set, the values of the
equivalent levels of the sound pressure A are
approximately 15-20 dB higher than the values stated in
the Catalogue.
7.3 Pipeline noise levels
Noise emitting from the surfaces of either the suction or
discharge pipelines is not included in the values of the
equivalent levels of the sound pressure A. You must pay
due attention when designing pipelines so that the
excitation frequency of the blower will not cause them to
resonate. It is necessary to select optimum diameters, wall
thickness, and material of the pipelines, and the anchoring
method, including the distances of the supports for both
the discharge and suction pipelines. The excitation
frequency of RT three-tooth blowers ranges between 100
and 500 Hz. The excitation frequency depends directly on
the blower revolutions (the blower revolutions range
between 1,000 and 5,000 1/min).
On customer request, we can supply an additional pipeline
silencer for specific parameters of the blower. This
silencer can prevent problems with noise emitted from the
pipeline near, e.g., housing, etc.
7.4 Machine hall
You must also pay due attention to the pipelines in the
machine hall. It is necessary to select flexible wall
openings for the pipeline in order to prevent pipeline
pulsation from being transferred to the walls of the
machine hall. You must also pay attention to the wall
material because it should absorb the emitted noise. If
possible, avoid using smooth concrete walls or steel
structures.
8. T
RAINING OPERATORS
After the machine has been put into operation and
transferred to the customer, it is necessary to train its
operators.
Training Schedule:
1. Checking the volumes and states of the oil charges,
topping them up, and changing them.
These operations are executed only when the blower set is
turned off. The oil volume depends on the blower type.
When oil is being topped up, its level must not exceed the
middle of the oil level gauge.
The operators are notified of the necessity to use the
recommended oils. The procedure for changing oil and the
frequency of oil changes are explained to them.
2. Checking the state of the belt drive or the coupling
3. Checking and replacing the filter inserts
5.13 P
LACES OF
EXCESSIVELY HOT
SURFACES
5.14 E
QUIPMENT
FOR PROTECTING
THE OPERATORS
AGAINST THE
RESIDUAL RISKS
5.15 S
PARE
PARTS