Installation And Maintenance Guide
INSTALLATION
Mounting
Basically when installing the Blower unit, the following variants are possible with a different axis position (horizontal or vertical)
- Horizontal installation
- Vertical installation on the Blower cover
- Vertical mounting on the wall
Horizontal installation
Screw the base of the Blower unit to the surface with suitable mounting elements.
Vertical installation on the Blower cover
With vertical installation of the Blower unit, mount the Blower cover facing downward install on rubber feet/vibration Pads
ELECTRICAL CONNECTION
The electrical connection must be carried out as follows :
- According to the applicable national and local laws and regulations.
- According to the applicable system dependent prescriptions and requirements.
- NEMA CLASS F insulation system is used for the motor.
Electrical power supply : As per details on the label on Blower
- ± 5% Phase Imbalance tolerated
- ± 10% Voltage Deviation tolerated
- ± 2% Frequency Deviation tolerated
Connection to drive motor terminal box:
Open the required cable entry openings on the terminal box.
The cable entry opening is prefabricated and provided with a sealing plug / cable Gland Screw out sealing plug.
Mount cable glands on the terminal box.
Proceed as follows :
- 1) Select one cable gland in each case which is suitable for the cable diameter.
- 2) Insert this cable gland in the opening of the terminal box. Use a reducer if necessary.
- 3) Screw on the cable gland so that no moisture, dirt etc, can penetrate into the terminal box.
- 4) Carry out the connection and the arrangement of the jumpers in accordance with the circuit diagram in the terminal box.
Connect the earth conductor to the terminal with the earth symbol :
- 1) The electrical connection must be permanently safe.
- 2) There may be no protruding wire ends.
For motor overload protection :
- 1) Use motor circuit breakers / starters
- 2) This must be adjusted to the specified nominal current as specified on label.
- 3) Ensure protection against single phase operation for 3 Phase Motor.
Operation with frequency converter :
With a power supply by a frequency converter, the following must be observed :
High frequency current and voltage harmonics in the motor supply cables can lead to emitted electromagnetic interference. This is dependent on the converter design.
Be sure to observe the EMC notes of the converter manufacturer.
Use screened power supply cables if necessary. For optimal screening, the screen must be conductively connected over a large area to the metal terminal box of the drive motor with a screwed metal gland.
In the case of drive motors with integrated sensors (e.g. PTC thermistors) interference voltage can occur on the sensor cable depending on the converter type.
Limit speed :
See specification on the Label.
PLUMBING/ CONNECTION OF PIPES
Mufflers :
The Blower units are delivered with mufflers (indicated with arrows in the following illustrations) for the inlet and discharge connections as standard equipment
Connections :
To prevent foreign bodies from entering the unit, all connections are sealed off when delivered. Do not remove the sealing plugs until immediately before connecting the pipes/hoses.
The pumped gases are sucked in via the inlet connection and discharged via the discharge connection.
The shaft rotating direction is marked with an arrow on the Blower.
The delivery direction of the gases is marked with arrows on both connections
Inlet connection :
The inlet connection with the related muffler is marked with an arrow pointing into the Blower.
Connect the inlet pipe here. The pumped gases are sucked in via this.
Installation of Inlet (Suction) Filter of 10 Micron will enhance life of Blower
Avoid suction from area where considerable moisture is present.
Discharge connection :
The discharge connection with the related muffler is marked with an arrow pointing out of the Blower. Connect the discharge pipe here. The pumped gases are discharged via this.
Properly supported pipes will enhance performance and reduce damage to Blower
Vent line recommended for low flow applications. The blower must have some airflow to prevent overheating.
Relief valve set at permissible pressure will protect Blower.
In a pressure application, a vent of the discharge with a ‘T’ and ball valve allow fine tuning of pressure and flow.
Series Operation
- To Increase pressure approximately 70%
- Discharge temperature of the upstream blower + temperature rise of the downstream blower should not exceed the maximum operating temperature.
- In most cases an intercooler is required to remove excess heat load.
- In such situations consider Two/Multi stage Blower
Parallel Operation
- Doubles maximum volume.
- Can be used for all machines.
- Discharge check valve recommended
- May require some type of ball or butterfly valve to regulate air flow
- In such case consider use of Two Impeller or Larger size Blower
