Pump Solutions Group Neptune Series 500 Specs Industrial - Manual (Page 3)

Neptune Chemical Pump Co.
P.O. Box 247
Lansdale, PA 19446 Phone: 215-699-8700
Fax: 215-699-0370
800 Fax: 800-255-4017
www.neptune1.com
NEPTUNE/CHEMICAL FEED SYSTEM SPEC 10-18-00 jvb ZL107972
3
Pump shall be field convertible to automatic stroke adjustment without the use
of special tools and without the need to replace any major frame parts.
Pump shall be furnished with a factory mounted driver suitably sized for
continuous operation at the maximum relief setting. Motor shall be sized for the
maximum relief setting. Motor shall be (integrally mounted direct
coupled/flange mounted with flexible coupling). No belts or pulleys should be
used in the drive train or for capacity adjustment. Pump and motor shall be
suitable for (indoor/outdoor) operation in (non-hazardous/hazardous, Class
__, Group __, Division ___) area, as shown on the Pump Data Sheet.
2.1 ELECTRIC STROKE ADJUSTMENT
(Note to Specification Writer: Use this section only for specifying pumps to b e
controlled automatically by a command signal. Electric stroke length control is
more reliable and has a much lower total installed cost than pneumatic length
stroke control. Pneumatic stroke length control is available. Electric stroke
length control offers superior performance over variable stroking speed control
through the use of variable speed drives for some applications.)
Pumps shall be furnished with automatic electric stroke length positioner to
follow a (4-20 mA/0-5volt/other) signal proportional to (flow/pH/other). Stroke
positioner will include provision for local manual override and will include a
local position indicator.
Positioner should be suitable for connection to either 115v or 230v single
phase power without external transformers. Units shall be suitable for use with
either milliamp or voltage inputs without field modifications. Positioner will
include adjustable limit switches with outputs for alarm purposes and will
provide an isolated 4 - 20 mA output signal for remote monitoring.
The stroke positioner shall include necessary logic and terminals to allow
connection to remote control stations if desired. Positioner should allow
remote features to be added without modification or replacement. Only the
purchase of the actual control stations should be necessary to achieve remote
stroke length display, remote auto/manual selection and the ability to manually
override the stroke length from the remote location.
On loss of signal, the control unit must be able to "FAIL" in the last command
position or to "FAIL" to a pre-selected adjustable position. Positioner should
provide contacts to alarm or loss of signal.