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READ AND REMOVE THIS PAGE BEFORE PLACING
THE SPECIFICATION SECTION IN THE CONTRACT

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DIVISION 16:  ELECTRICAL

SECTION 16907 ‑ PUMP CONTROLS

USE:	Furnishing and installing pump control and protection devices for electrical circuits.  

NOTES TO SPECIFIER:

	A.	Options within paragraphs are identified by enclosure in brackets; blank spaces enclosed by brackets [_____] provide for information to be inserted, as appropriate, to individual projects.

	B.	TO AVOID CONFLICTING REQUIREMENTS AND COSTLY MISTAKES, the specifier must edit (delete, substitute or add to the text).  The remaining paragraphs must be renumbered.

	C.	DELETE FOR FINAL COPY: Notes to the Specifier, located between lines of asterisks; all [brackets], underlining, boldface, and italics, within the paragraphs; and this page.  (Open Reveal Codes [alt F3] to do this accurately.)

	D.	To Edit “(Footer B)”: (Corel 8).  ENTIRE FOOTER SHOULD BE BOLDED.  Click in the footer and delete the “Project Name (ftr B)” text and replace it with the Name of the Project (upper and lower case).  Replace date with current MM/YY (WITHOUT BRACKETS).

	E.	The Guide Specifications are intended to be continuously reviewed and revised.  User’s technical comments are appreciated.  Also, other related or similar specification that are written “from scratch” that could benefit others, or other questions can be sent to NSTC A/E Group, ST 110, or call (303) 987-6868.

DRAWING DATA REQUIRED:

REVISIONS OF THIS SECTION:
CSI format, editorial changes: 12/01
Metric:  
Technical Update:  2/97

SECTION 16907

PUMP CONTROLS

PART 1:  GENERAL

1.1	SUMMARY

	A.	Section Includes:  [Furnishing] [and] [installing] controls for:  water systems; sewer systems; irrigation systems. 

1.2	SYSTEM DESCRIPTION

	A.	Requirements:  [                                        .]

1.3	SUBMITTALS

	A.	General:  Submittals shall be according to [Section 01009 - General Information and Requirements.] [Section 01300 ‑ Submittals.] [Section 01365 - Certificates of Conformance.]

	B.	Manufacturer's Literature:  Submit [    ] copies of the manufacturer's technical data on the individual control equipment items to be used on this project.

1.4	QUALITY ASSURANCE

	A.	Labeling Requirements:  Control devices shall be Underwriters Laboratories, Inc. (UL) listed and labeled.  UL listing and labeling will not be required if it can be shown that control devices meet the requirements of another nationally recognized testing laboratory (NRTL).

PART 2:  PRODUCTS

2.1	MATERIALS

	A.	General:  Control devices shall be constructed of the manufacturer's standards materials, as listed in published product information; types and sizes shall be as indicated or as required for the installation.

	B.	Enclosures:  Where NEMA numbers are given, it refers to the enclosure type as listed in NEMA 250.

2.2	PUSH BUTTONS AND CONTROL STATIONS
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SELECT APPLICABLE PHRASES.  WHEN MORE COMPLEX PUSHBUTTONS OR CONTROL STATIONS ARE NEEDED, IT IS NECESSARY TO USE THE OILTIGHT NEMA 4 TYPE BECAUSE THE STANDARD‑DUTY LINE DOES NOT INCLUDE ALL OF THE FORMS AND FUNCTIONS WHICH ARE AVAILABLE.  WHERE SPACE IS LIMITED, SPECIFY THE MINIATURE OILTIGHT UNITS RATED 150 V, 5 A.
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	A.	Requirements:  [Miniature, oiltight, industrial‑type control stations with double‑break silver contacts rated 5A, 150V.]  [Heavy‑duty, [oiltight] industrial‑type control stations with double‑break silver contacts rated 10 amps, 600V.]  Number and type of contact blocks and legend plate inscriptions shall agree with schedules shown on the drawings.  Operators to be [push button] [or] [rotary type], [momentary] [or] [maintained] contact, [with] [or] [without] indicating lights, [with] [or] [without] guards, [standard] [or] [special] knob, [two‑] [or] [three‑] position, in NEMA [1] [or] [4] enclosure.

2.3	SWITCHES
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SELECT APPLICABLE PHRASES.  DO NOT USE THIS SWITCH FOR SEWAGE APPLICATIONS.
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	A.	Float Switches:  Shall be in NEMA [1] [4] [7] industrial‑type enclosures.  They shall be provided complete with necessary mounting provisions, linkage, hardware, floats, weights, and pulleys of suitable corrosion‑ resistant material for the fluid involved.  [1] [2] [  ] [single‑pole, single‑throw] [single‑pole, double‑throw] contacts rated 2 hp at 115V or 3 hp at 230V shall [open] [close] on liquid rise.  Switch shall be suitable for use on [open‑] [closed‑] tank applications.

	B.	Float Switches:  Shall be a mercury switch encapsulated in a polyvinyl‑ chloride float for mounting directly in a wet well or tank.  Mercury switch rated at 10A, 120V, or 8A, 230V and connected by a two‑conductor, Type SO neoprene‑jacketed cord to a NEMA [1] [4] [7] junction box above the fluid level.  Float is held in position at desired level by weights attached to the suspension cord or by clamping the suspension cord to a support rod or tube.  Hardware shall be corrosion resistant to the fluid involved.

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SELECT APPLICABLE PHRASES.  PRESSURE SWITCH SPECIFIED IS DIAPHRAGM‑TYPE WITH SNAP SWITCH FOR USE ON WATER OR COMPRESSED AIR.  HIGHER PRESSURE SYSTEMS MAY NEED BOURDON‑TYPE OR BELLOWS‑TYPE ACTUATORS WITH CLOSE DIFFERENTIAL AND SHOULD BE SPECIFIED SEPARATELY.
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	C.	Pressure Switches:  Shall be industrial type in NEMA [1] [4] enclosures.  Switch to be usable on pneumatic or hydraulic systems.  Pressure range shall be [1.5 to 30] [1.5 to 75] [3 to 150] psig.  Differential to be [non‑adjustable] [adjustable].  Switch is to be diaphragm‑actuated by a BUNA‑N diaphragm in a zinc‑plated housing.  Snap action single pole, double throw, contacts shall be rated 10A, 600V continuous, 7200VA make and 720VA break.

	D.	Limit Switches:  Shall be heavy‑duty, precision, oiltight type with a basic switch which accepts interchangeable turret heads with various types of operators.  Basic switch shall plug into a receptacle base which includes provision for conduit connection.  Turret head shall be [lever‑arm type with roller] [[top‑] [side‑] roller plunger] [[top‑] [side‑] push‑rod plunger] [wobble‑stick type].  Switch shall have two spring‑return normally open and two normally closed contacts rated 10A, 600V continuous, 7200VA make and 720VA break.  Enclosure shall be NEMA 6P.  

	E.	Flow Switches:  Shall be paddle‑type for use in water lines from 1 to 6 inches in diameter.  [Shall include time‑delay relay to eliminate false signals due to turbulence], [20‑sec delay on make] [5‑sec delay on break].  Wetted parts shall be of corrosive‑resistant material.  Switch shall be suitable for pressure to 150 psi and temperature to 225 degrees F.  Switch shall have an external sensitivity adjustment.  [One] [two] single‑pole, double‑throw contacts rated 120/240V, 125VA pilot duty or 120/240V 7.4/3.7 A motor duty are required.  Enclosure shall be suitable for NEMA [1] [3] use.

	F.	Time Switch:  Shall be [24 hr dial type with day omission feature] [7‑day dial type].  Provide switch with an automatically‑wound spring mechanism to maintain correct time and operate the contacts for a minimum of 15 hr without power.  Provide a manual on‑off bypass switch and 30A [SPDT] [DPDT] [3PST] contacts.

2.4	RELAYS

	A.	Low Drain Pilot Relays:  Shall be enclosed in transparent plastic enclosures with plug‑in terminals on the base.  Each relay shall have four‑pole double‑throw contacts rated [3A, 120V ac/28V dc for low‑level switching] [5A, 120V ac/28V dc for switching inductive loads].  A manual operator shall be included to facilitate circuit testing.  Coils shall be for continuous duty [ac] [dc] rated [6] [12] [24] [48] [110] [120] [240] V.  Coil burden shall not exceed [3.5VA inrush, 1.2VA sealed for ac] [1.0 W for dc].  Operating temperature range is ‑45 degrees C to 75 degrees C.  Relays shall mount on socket bases which have [screw‑type terminals] [quick connect type spade lugs] for circuit wire connection.

	B.	Light Duty Control Relays:  Shall be enclosed in transparent plastic enclosures with plug‑in terminals on the base.  Each relay shall have [DPDT [3PDT] contacts rated 120/240V, 10A continuous.  A manual operator shall be included to facilitate circuit testing.  Coils shall be [ac] [dc] rated [6] [12] [24] [48] [110] [120] [240] V.  Coils shall be rated continuous duty with coil burden not to exceed [5VA inrush, 3VA sealed for ac] [3W for dc].  General‑purpose, latching‑ and time‑delay relays shall be available in this general configuration except the time delay relays have contacts rated 5A and have octal‑tube type plug‑in bases.  [Furnish variable [on] [off] time delay range from [.1 to 10 sec] [67 to 600 sec].  Relays shall plug in to socket type bases which have [screw type terminals] [quick‑connect type spade lugs] for circuit wire connection.  Socket‑type bases shall be suitable for individual mounting or for group installation on a section of mounting track.

	C.	Industrial‑Type Control Relays:  Shall be open type, multi‑circuit [300V] [600V] industrial‑control relays with [2] [4] [8] [12] contacts rated 10A continuous.  Contact shall be [convertible] [[   ] N.O. and [   ] N.C.].  Coils shall be for use on [ac and rated [12] [24] [48] [120] [208] [240] [277] [480] [600] V with less than 100VA inrush and 20VA sealed] [dc and rated [12] [24] [48] [64] [125] [250] V with less than 10W burden].  Relays shall be modular type with provision to add on extra contacts to a total of 12; add on a latch attachment and coil clearing contacts; and add on a pneumatic timer attachment for on or off delay of 0.2 sec to 60 sec or add on a transistorized timer attachment for on or off delays of up to 180 sec.  Relays shall be arranged for individual or mounting track installation and shall be furnished in open type or NEMA [1] [3R] enclosures.  Provide relay with [latch attachment and coil‑clearing contacts] [pneumatic timer for [on] [off] delay] [transistorized timer for [on] [off] delay].
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SELECT APPLICABLE PHRASES.  ORDINARY POTABLE WATER OR SEWAGE COULD BE SENSED BY EITHER THE LOW‑ OR HIGH‑SENSITIVITY ELECTRONIC RELAYS.  THE HIGH‑SENSITIVITY RELAYS ARE USEFUL FOR REMOTE CONTROL APPLICATIONS BECAUSE THE LOW VOLTAGE DC ELECTRODE CIRCUIT ALLOWS USE OF LONGER RUNS OF TELEPHONE DISTRIBUTION WIRE.
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	D.	Liquid Level Sensing Relays:  Shall be of the [induction] [electronic] type suitable for sensing fluid levels in pressurized or non‑pressurized [water] [sewer] [    ] systems.
		1.	Induction relays shall have both a primary coil for [120] [208/240] [480] [600] V and a secondary coil with an open circuit voltage of [220V for sewage or most water systems] [360V for systems with soft water].  The secondary coil shall be connected to electrodes immersed in the fluid through a suitable [threaded, pressure‑tight, [brass‑] [cast‑iron‑] [stainless‑steel‑] electrode holder rated 250 psi] [nonpressure‑tight cast‑iron electrode holder constructed to be ice‑free] [nonpressure‑tight [flanged cast iron] [flanged‑PVC‑] [molded externally threaded‑PVC] [conduit‑type] [cord‑grip‑type] electrode holders].  Relay shall have three isolated, double break, convertible contacts rated 25A, 1 hp at 120 or 240V ac.  By using different contact arrangements high‑ or low‑level signal control, pump up or pump down functions are obtained.  Relay shall be [open type] [in NEMA [1] [4] enclosure].
		2.	Electronic relays shall be solid state [low‑sensitivity type with an electrode potential of 8V ac for use on liquids having an electrode circuit resistance of approximately 270 to 22,000 ohms] [high sensitivity type with an electrode potential of 9.6V dc for use on liquids and material having an electrode circuit resistance of 10,000 to 12.0 megohms.  Sensitivity shall be adjustable [by means of a set of fixed resistors] [by means of potentiometer].  Relay shall be [direct‑operating type for pump down or low level alarm applications] [inverse‑operating type for pump up or high‑level alarm applications].  Relay shall be rated for use on either 120 or 240V as supply and shall be [open type] [in NEMA [1] [4] enclosure].  Contacts are one DPDT load and one SPST hold‑in rated 10A 120 or 240V ac.
		3.	Electrode shall be [adjustable‑wire‑suspended type] [solid‑rod‑type cut to lengths shown].  Electrodes shall be supported from a cast-iron, watertight box designed for the purpose and mounted to the tank.  Conductors shall be continuous (without splices) from electrode to relay.

2.5	ALTERNATORS

	A.	Electric Alternator:  Shall be for use on [control circuits and shall have contacts rated 10 amps, and up to 600V] [motor circuits and shall be rated to supply two 1‑hp single‑phase motors at 120/240V].  Device operation is controlled by two pilot devices, one of which closes first and the second closes only with peak demand or emergency condition.  The alternator shall close first one load circuit and then the second load circuit on each successive closing of the first pilot device.  If the second pilot device should close, both load circuits shall be energized.  Alternator shall be [open type] [furnished in NEMA 1 enclosure].

	B.	Mechanical Alternator:  Shall be float‑actuated type for use in [open] [closed] tanks.  [Alternator for closed‑tank system shall have [threaded] [flanged] type mounting.]  Contacts shall be rated to supply two 1‑hp single‑phase motors at 120/240V.  Device operation is controlled by two pilot devices, one of which closes first and the second closes only with peak demand or emergency condition.  The alternator shall close first one load circuit and then the second load circuit on each successive closing of the first pilot device.  If the second pilot device should close, both load circuits shall be energized.  Enclosures shall be NEMA [1] [4].

2.6	PUMP PROTECTION

	A.	Pump Protection Equipment:  Shall protect pump from running dry [phase loss and reversal] [low and high voltage].  Shall be [115] [208] [230] [460] volt, [single-] [three-] phase, [1/20 to 1/2] [1/3 to 1] [1/3 to 2] [1/3 to 10] [1 to 75] [1 to 100] [1 to 200] HP.  Line transient protection shall be provided.  [Manual] [Automatic] restart shall be from 10 minutes to 4 hours.  Captive "lug type" terminals for up to #8 wire shall be provided.  Calibration shall be performed using [hand] [screwdriver] adjustments.  [Unit comes standard as open chassis.]  Unit shall work on [2-] [3-] wire motors on [submersible] [jet] [centrifugal] [sump] pumps.

PART 3:  EXECUTION

3.1	INSTALLATION

	A.	General:  Install control devices as indicated complying with manufacturer's written instructions, applicable requirements of codes and standards, and according to recognized industry practices.

3.2	TRAINING OF GOVERNMENT EMPLOYEES

	A.	Requirements:  See Section 01700 ‑ Contract Closeout.

PART 4:  MEASUREMENT AND PAYMENT
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WHEN A "LUMP SUM" CONTRACT IS USED, DELETE THE TITLE PART 4: MEASUREMENT AND PAYMENT, AND BOTH ARTICLES FROM THIS SECTION.  MEASUREMENT AND PAYMENT WILL BE ADDRESSED IN PART 4 OF SECTION 01010 -SUMMARY OF WORK.
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4.1	METHOD OF MEASUREMENT

	A.	Units:  The work described in this section will not be measured for payment.

4.2	BASIS OF PAYMENT

	A.	Payment:  No direct payment for the work described under this section will be made.  Consideration for this item shall be included in the bid price for other items of the Contract.

END OF SECTION

PUMP CONTROLS
Project Name (ftr B)	[12/01]
16907 -