speed, and ampere, permanently mounted in position visible to viewer
without use of special tools, such as a mirror. Provide motor and pump
data on the outside of machine frame.
2.4.7.2
Maximum Allowable Motor Amperage
Do not exceed its own nameplate amperage when motor is running and elevator
is lifting rated load at rated speed.
2.5
CONTROL EQUIPMENT
**************************************************************************
NOTE: The use of wye delta in lieu of resistance
reduced-voltage starters depends upon manufacturer,
elevator capacity, electrical power characteristics,
and cost. Most manufacturers use wye delta
reduced-voltage starters when three phase power is
available. For motors greater than 11 kw (15
horsepower), use power factor correcting capacitors
to increase power factor to unity.
**************************************************************************
NFPA 70 and ASME A17.1, Section 3.26. Provide elevator motor controller of
magnetic reduced-voltage resistance or wye-delta start with overload relays
in each line and reverse phase relay. Provide controls for [sequential]
starting, stopping, and speed of elevator and to give specified operation.
Enclose control equipment in factory-primed and baked-enamel coated
sheet-metal cabinets with removable or hinged doors and ventilation louvers.
2.5.1
Logic Control
**************************************************************************
NOTE: Use microprocessors for elevator logic
control. However, solid state control is not
desirable for any facility which is subject to an
erratic building power supply. In this situation,
specify an electromagnetic switch, relay logic
controller. The mechanical design for the elevator
machine room must include the HVAC recommended by
the control system manufacturer.
**************************************************************************
[Provide solid-state microprocessor controller to enable programmable
control of call allocation, logic functions, door control, speed sensing
and car position. Provide a method of reprogramming adjustable parameters
of computerized controls. Store all programming in non-volatile memory.
The microprocessor control system is acceptable only if hardware and
software required to maintain and utilize microprocessor is provided and
training is provided to Government Personnel by the equipment manufacturer
and supplier. For the repair of microprocessor control system, provide
maintenance tools, supporting computer software, and software documentation
required for complete maintenance of elevator system including diagnostics
and adjustments. Tools may be hand held or built into control system.
Provide tools which do not require recharging to maintain their memory or
authorization for use. Do not use software which requires periodic
reprogramming, or reauthorization. Programs shall be stored in
non-volatile memory. Tools and software may be factory programmed to
operate only with this project's identification serial number.] [Provide
electromagnetic switch, relay logic controller.]
SECTION 14240
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