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Conveying System Mechanical Components Chapter 2: Functional Description 21 of 138
Pumps
SPD Series Models: SPD20, SPD30
• Support base.
• Positive displacement blower.
• 3-phase high efficiency TEFC electric motor.
• 20 or 30 horsepower (15 or 22.5 kW).
• Standard voltage is 230-460/3/60. 380-415/3/50 and 575/3/60 are
optional.
• Adjustable motor base.
• Compressed air-operated mechanical high-vacuum relief valve.
• Vacuum gauge.
• Vacuum switch for high vacuum protection.
• Junction box with motor starter, including overload protection.
• Discharge silencer.
Options
• Fused disconnect in the junction box.
• Distributed I/O capability.
• Sound enclosure.
• Premium-efficiency motors.
• Re-sheave for elevation.
• 24VDC or 120 AC controls.