Posted by admin | Posted in Model Railway | Posted on 28-03-2009
Tags: lionel motorized units, motorized unit
Looking For Motorized Unit ? Then This is Where You Want to Be
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 Akebono ISD266 Front Ceramic Pads  US $45.52
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 Dorman OE Solutions 741 811 Window Reg With Motor US $86.16
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 Precision Motion Controls PMC LN2 60 DriverLM 60 Motor US $555.00
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 HONDA CRF450R HOTCAMS HOT CAMS STAGE 1 CAM 2009 US $174.95
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 Akebono ISD465 Front Ceramic Pads US $37.91
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 MOSE Hercules acclaimed External PSU for Linn LP12 US $359.00
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 Dorman OE Solutions 620 003 Radiator Fan Assembly US $147.28
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 NEW 6LB DUAL DRUM ROTARY ROCK TUMBLER STONE POLISHER US $87.90
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 Dorman OE Solutions 600 100 Axle Actuator US $105.63
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 Akebono ISD470 Front Ceramic Pads US $40.77
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 Dorman OE Solutions 620 005 Radiator Fan Assembly US $176.58
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 1988 1993 Chevy Lumina Radiator Cooling Fan Assembly US $21.99
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 Akebono ISD471 Rear Ceramic Pads US $43.98
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 Dorman OE Solutions 600 102 Axle Actuator US $71.89
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 NEW 60a 2p Plugon Circuit Breaker Ea Circuit Breakers Dbl Pole QO260CP US $30.22
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 NEW Drill Keyless 3 8 60amp Hitachi Each Electric Drills D10VH 717709007499 US $85.14
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 Beck Arnley 104 1442 Engine Mount Front US $46.11
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 Akebono ISD275 Front Ceramic Pads US $37.82
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 Littelfuse MIN2 Fuses US $7.35
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 Beck Arnley 203 0009 Lamp Relay Switch US $26.89
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 Akebono ISD154 Front Ceramic Pads US $47.69
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 Beck Arnley 203 0064 Radiator Fan Relay US $17.13
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 Littelfuse MIN3 Fuses US $7.35
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 Littelfuse GBC16 Fuses US $7.08
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 Beck Arnley 201 1604 Radiator Fan Switch US $29.72
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 Akebono ISD476 Front Ceramic Pads US $44.53
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 Beck Arnley 201 1605 Radiator Fan Switch US $21.27
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 Littelfuse SFE4 Dash Light Fuse US $7.08
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 Littelfuse SFE75 Fuses US $7.08
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 Littelfuse MIN4 Fuses US $7.35
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 Littelfuse ATO1 Fuses US $7.14
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 Akebono ISD356 Front Ceramic Pads US $45.52
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 Littelfuse SFE20 Fuses US $7.08
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 Beck Arnley 203 0094 Radiator Fan Relay US $31.55
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 NEW Fuse Plug Time Delay 10a Each Fuses Plug adapters BP S 10 051712103220 US $13.53
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 Littelfuse PAL030BP Fusible Link Cable US $9.33
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 Littelfuse GBC25 Fuses US $7.08
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 Beck Arnley 201 1609 Radiator Fan Switch US $25.69
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 Beck Arnley 203 0011 Lamp Relay Switch US $14.18
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 Beck Arnley 203 0095 Horn Relay US $21.91
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 Akebono ISD436 Front Ceramic Pads US $52.78
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 NEW Dd Ultra Handvac Each Hand Vac M08230RED 046034883271 US $56.66
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 Littelfuse ATO4 Dash Light Fuse US $7.14
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 Beck Arnley 203 0103 Headlamp Relay US $21.38
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 Beck Arnley 203 0132 Window Lock Relay US $16.92
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 Dorman OE Solutions 620 606 Radiator Fan Assembly US $85.79
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 Beck Arnley 203 0099 Cruise Control Relay Switch US $19.22
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 Dorman OE Solutions 620 102 Radiator Fan Assembly US $104.60
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 Beck Arnley 203 0134 Radiator Fan Relay US $21.91
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 Akebono EUR912A Front Ceramic Pads US $107.12
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 Akebono ISD242 Front Ceramic Pads US $40.33
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 Beck Arnley 201 1646 Radiator Fan Switch US $25.70
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 Eagle Electric 36 Volt 75 HP Electric Motor 5751 with 90 day WRI warranty US $150.00
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 Akebono ISD486 Front Ceramic Pads US $42.57
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 Dorman OE Solutions 620 022 Radiator Fan Assembly US $110.26
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 Akebono ISD409 Front Ceramic Pads US $42.72
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 Dorman OE Solutions 620 420 Radiator Fan Assembly US $125.13
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 Beck Arnley 187 0526 Remanufactured Starter US $223.03
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 Beck Arnley 187 0495 Remanufactured Starter US $259.14
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 Wells JA1467 Blower Motor Resistor US $23.61
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 Wix 33631 Fuel Filter US $20.26
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 Tamiya 54103 RC CR 01 Heat Sink Motor Plate Aluminum US $14.25
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 Motorcraft CX1461 Throttle Position Sensor US $45.18
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 Beck Arnley 187 0377 Remanufactured Starter US $204.04
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 Beck Arnley 187 0417 Remanufactured Starter US $159.94
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 FR A024 01K Mitsubishi Inverter FR PU03E Control US $145.00
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 Dorman OE Solutions 622 001 Fan Clutch US $162.11
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 Beck Arnley 187 0549 Remanufactured Starter US $206.48
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 Vintage GENERAL ELECTRIC GE Electric Skillet No 25C26 US $13.99
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 Dorman OE Solutions 620 204 Radiator Fan Assembly US $53.19
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 Beck Arnley 187 0537 Remanufactured Starter US $230.59
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 Beck Arnley 187 0645 Remanufactured Starter US $239.85
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Industrial Gas Fired Air Makeup Units
NISCO Co. has re-designed its Make-Up Air Units for larger industrial plants ventilation requirements.
Negative Air Pressure in industrial manufacturing facilities can create problems such as:
* Exhaust fans losing performance, as the building pressure becomes negative.
* Pilot light outages and exhaust system failure on natural draft gas equipment.
* Cold air drafts and infiltration of dirt and contamination from outside.
* Difficulty opening or closing exterior doors.
NISCO air-handling units (AHU) can be used effectively for negative pressure control at manufacturing facilities:
Space Pressure Control is used to minimize and control the exchange of air between the building and the outside environment or from one building area to another. This may be accomplished in three ways:
- Constant air supply with variable-speed exhaust;
- Variable air supply with constant-speed exhaust;
- Variable Return-Air.
Constant air supply with variable-speed exhaust is recommended where a hot or contaminated environment must be ventilated while maintaining room pressure. Unit may be interlocked to that it only operates with the exhaust system.
Variable Air Supply with constant-speed exhaust may be preferred where fume exhausters or fume hoods are used to provide critical ventilation of contaminants from a “clean†environment while make-up air is used to maintain a positive pressure to prevent infiltration.
In either case, when the system is enabled, a pressure sensor in the building space monitors room pressure. When a high or low pressure reading is detected, the air supply or exhaust is adjusted to compensate.
When controlling a Variable Air Supply unit (or VAV Unit - Variable Air Volume), two methods are available:
- Damper Control - Unit discharge damper is adjusted using the damper motor.
- VFD (Variable Frequency Drive) – Controller adjusts the speed of the blower motor Discharge Damper adjustment is an older method of controlling discharge air volume. Its main advantage is that it only requires positional control of a small discharge damper motor. The major disadvantage is the wasted Horsepower of the blower motor at lower delivery rates.
In recent years, fan speed control using VFDs has become economical. In this application, a standard energy efficient motor is usually adequate down to 75% of normal motor speeds. For a fan speed down to 25%, a premium efficiency motor is required. Inverter duty motors are not usually necessary since at 25% of normal fan speed, air delivery is minimal.
Variable Frequency Drives are also programmable. They are used to provide soft starts and to ramp motor speed up or down in response to signals from the control system.
Finally, in a generally “clean†environment without a critical need to remove large quantities of contaminants, a simple solution to building pressurization is a Return Air Unit with the return air damper motor controlled by building a pressure sensor. When building pressure increases, more inside air is returned through the unit, relieving the pressure. When building pressure falls, more outside air is supplied to the building in order to “pump up the pressureâ€. Precise control of building pressure by a single piece of equipment can thus be achieved.
Additional information can be found at the NISCO company web site http://nisco.net/aircurtain.html.
Oleg Tchechel
Industrial Air Handling Systems Designer
NISCO
http://nisco.net/airhandler.html
http://nisco.net/hvac.html
About the Author
Oleg Tchechel
Developer of Industrial Ventilation Equipment
NISCO Fan Co.
http://www.nisco.net/custserv.html
http://www.nisco.net/inquiry.html