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INSTALLER:

PLEASE LEAVE THIS MANUAL FOR THE OWNER’S USE.

SAFETY
INSTRUCTION

This safety alert symbol will be used in this manual and on the
70E/70M Safety Instruction decal to draw attention to safety
related instructions. When used, the safety alert symbol means
ATTENTION! BECOME ALERT! YOUR SAFETY IS
INVOLVED! FAILURE TO FOLLOW THESE INSTRUCTIONS
MAY RESULT IN A SAFETY HAZARD!

INSTRUCTION MANUAL

S12228

REVISION A

Installation, Operation, & Maintenance Instructions

70E/70M Multiple Pump & Control
Pressure Booster Systems

70E

DESCRIPTION

Microprocessor controlled frame mounted multiple pump
pressure boosting system with combination pressure reducing
and non-slam check valves for maintaining system pressure.
The motors are controlled by a control panel with micro-
processor, starters, overload protection, virtual H-O-A switches,
optional short circuit protection, and control transformer.

The microprocessor control consists of an operator interface
with 2 line backlit display and membrane key pad, input/
output board with 24V power supply, and microcontrolled
kW transducer.

BELL & GOSSETT

®

OPERATIONAL LIMITS

See unit nameplate for pump capacity, boost, full load current
draw, and operating voltage. The pump discharge pressure
must not exceed 125 PSI unless special piping modifications
are made.

Bell & Gossett

®

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Содержание 70E

Страница 1: ...controlled frame mounted multiple pump pressure boosting system with combination pressure reducing and non slam check valves for maintaining system pressure The motors are controlled by a control panel with micro processor starters overload protection virtual H O A switches optional short circuit protection and control transformer The microprocessor control consists of an operator interface with 2...

Страница 2: ...fied in Figure 1 Permanent records for this unit are kept by the factory number and it must therefore be used with all correspondence and spare parts orders Model No Factory No Wired for Volts Hz Ph System FL Amps Largest Motor HP System Flow GPM Suction Pressure PSIG Discharge Pressure PSIG Pump TDH Feet FIGURE 1 70E 70M NAMEPLATE ...

Страница 3: ... switches Microprocessor control coupled with discrete logic allows the pump keys to act as 3 position selector switches The 3 positions are hand off auto Virtual selector switches surpass standard selector switches in that they can be changed from auto to hand automatically upon a fault in order to maintain a process It is novel that just as a standard selector switch can change position by human...

Страница 4: ...er Wiring 7 Analog Signal Wiring 7 Pressure Transmitter Wiring 8 Temperature Sensor Wiring 8 Flow Sensor Transmitter Wiring and Installation 8 Differential Pressure Switch Piping and Wiring 8 Remote Start Stop 8 Remote Alarm Indication 8 Pump On Off Remote Signal 8 SECTION 3 START UP Putting Unit into Service 8 SECTION 4 SETUP AND FEATURES Power Up 9 Setup and System Configuration 9 Key Functions ...

Страница 5: ...eshooting Combination Pressure Reducing and Check Valves 24 PRV Repair Kits 26 APPENDIX E Service Test Overview 27 APPENDIX F Power Transducer Board PTB 27 NOTE The information contained in this manual is intended to assist operating personnel by providing information on the characteristics of the purchased equipment It does not relieve the user of the responsibility to adhere to local codes and o...

Страница 6: ...G 1 4 1 Care should be taken to prevent damage due to dropping or jolting when moving the unit Inspect the unit thoroughly for damage upon receipt Transportation damage should be brought to the car rier s attention immediately Ensure that sensing lines are free of crimps and kinks 1 4 2 The units should be unloaded and handled by quali fied personnel The unit is top heavy due to the posi tion of t...

Страница 7: ...lled in the inlet and outlet connections of the unit 2 5 6 After hydrotesting drain plugs are removed to facili tate system drainage placed in a cloth bag and secured to the unit Drain plugs shall be reinstalled prior to filling the system with fluid Inspect all unit piping connections Joints may also become loose during transit due to vibration and shock All joints are to be checked for tightness...

Страница 8: ...E START STOP Digital Install a non powered dry contact digital input to ter minals J4 1 and J4 2 With the LOCAL REMOTE OFF switch in the REMOTE position this contact closure will provide the start signal 2 7 3 4 REMOTE ALARM INDICATION Digital Signal A digital output dry contact rated 2 Amps at 115V is supplied on terminals J5 7 and J5 8 This output closes to indicate that an alarm condition exist...

Страница 9: ...ing table Use the UP or DOWN ARROW keys to move through the menu To change values press ENTER modify the value using the numeric key pad or UP and DOWN ARROW keys press ENTER to accept the modification SECTION 4 SETUP AND FEATURES WARNING Electrical shock hazard Inspect all elec trical connections prior to powering the unit Wiring connections must be made by a qualified electrician in accordance w...

Страница 10: ...unction 23 GPM Xmiter Span Enter value equal to GPM transmitter calibration 0 0 30 000 24 2nd Stage Proof 2 2nd pump stage proof time in seconds 5 1 180 25 3rd Stage Proof 2 3rd pump stage proof time in seconds 5 1 180 26 Display Watts YES Use up down keys to enter yes or no Yes Y N 27 Three phase Watts YES Use up down keys to enter yes or no YES three phase Yes Y N NO single phase 28 Display AMPs...

Страница 11: ... Enter in seconds 5 60 value of the 0 5 60 no flow condition proof timer 0 disables the function 48 NFSD Temp Cut Out 0 Enter NFSD temp differential 0 disables this function 5 0 10 49 NFSD Min Run TMR 10 Time period minutes to ignore no flow sequence 10 0 999 after restart from no flow shut down 50 NFSD Restart PSI 0 Enter value of system pressure to restart 0 0 SPAN 51 NFSD Test Pr TMR 0 Enter in...

Страница 12: ...R key You will return to the standard operating display HELP MESSAGES PRESS HELP AFTER CLEARING ANY ALARMS LINE KEY MESSAGE 1 Start Stop Used to start and stop pumps 2 Auto Hand Used to select auto or manual operation 3 Pump 1 Used to start stop pump 1 green run flashing green enable Enable flashing red failure 4 Pump 2 Used to start stop Pump 2 green run flashing green enable Enable flashing red ...

Страница 13: ...mperature XX F If high temperature cut out is entered System Temperature XX F If high temperature cut out is entered Total AMPS XXX If selected in menu Total KW XXXX If selected in menu Flow XXXXX GPM If span entered Alarm flashing When an alarm occurs Startup Standby Bottom Line Only Alternation Engaged Standby Bottom Line Only Pump Not Available Bottom Line Only Please Enable a Pump Bottom Line ...

Страница 14: ...nt Water Level Low Check water level in holding tank Water Temp High Check water temperature Pump X Off Need pump in system if OK enable pump Suction Trans Fail Check wiring piping polarity and continuity System Trans Fail Check wiring piping polarity and continuity Flow Trans Fail Check wiring piping polarity and continuity Suction RTD1 Fail Check wiring continuity System RTD2 Fail Check wiring c...

Страница 15: ...is not on The 3rd pump stages in the same manner as the sec ond pump according to the menu entry for that pump 5 2 8 Destaging occurs when 1 HP or AMPs selected method of stating of the last pump staged plus the cumulative value of all other running pumps reaches the destage percent value entered in the user menu and a proof timer and the minimum run timer time out 2 GPM decreased to the value of ...

Страница 16: ...mote operation 5 3 2 AUTO HAND Key select HAND 5 3 3 Enable Pumps by pressing 1 2 or 3 PUMP keys 5 3 4 Start Stop as 5 2 4 above 5 3 5 Pump Start as 5 2 5 above 5 3 6 Alternation none 5 3 7 Staging none 5 3 8 De staging none 5 3 9 Pump Shut Down none However all alarms of Table 4 are active but do not shut the pumps down Some items are not in normal scroll See foot note of Table 3 Note that motors...

Страница 17: ...onents are provided to reduce contact arc and ex tend electrical life 6 4 ANALOG INPUTS Analog inputs are provided on the I O board for process variables and for flow readout All analog inputs operate at 4 20mA They may be powered from 24 VDC on board or self powered in any mix without isolators Each analog input has 4 terminals associated with it i e 2 for signal input 1 for 24 VDC and 1 for shie...

Страница 18: ... follows Source 2 Wire Step Signal Input Terms Terms 1 Suction 1 1 2 2 3 2 System 2 5 6 6 3 3 Flow 3 7 8 8 9 Polarity shown is that of the signal analyzer and not the markings on the I O board 4 not used 4 5 RTD1 RTD in 1 13 14 6 RTD2 RTD in 2 16 17 A substitute 100 OHM resistor terms 13 14 or 16 17 will result in a temperature reading of 32 F 7 DC Supply 24 00 VDC 10 satisfactory 8 Display top li...

Страница 19: ...oltage crossed wiring etc A 1 AMP fuse F1 fast acting 3AG located just above relays K6 K7 and K8 protects all analog inputs up to 600V in error only A sustained fault may blow this fuse and burn out the input resistors They are located just below terminals J3 and are numbered R3 R4 R1 and R2 for chan nels 1 2 3 and 4 respectively 6 14 3 Field Repair resistors R1 R2 R3 and R4 plug in and are easily...

Страница 20: ...R6 is on Only the red HAND LED and the 3 green LEDs with one for each pump key will turn on or off Unit will run in manual per paragraph 5 4 Corrective Action Replace OIP C Watch dog LED CR6 is off but all LEDs or some LEDs are off Corrective Action 1 Check that the ribbon cable is plugged in 2 Check for ribbon cable damage 3 If all LEDs off check incoming power and fuse F1 4 Reboot 5 Replace OIP ...

Страница 21: ...n emergency this is the procedure to be performed when authorized by the factory A Record all data from the OIP B Turn off all power to the panel C Ground your body Touch earth ground to dis charge static electricity D With one hand only gently pry EPROM chip U1 up from its socket alternating from each end in small increments Use a small screwdriver Do not place free hand on OIP components Ground ...

Страница 22: ...tor terminal connection ____ 2 Are the feeder wires correctly sized for the load ____ 3 Are the fuses correctly sized They must not exceed 1 75 times the full load current of the motor Usual sizing is 1 15 to 1 5 times the full load current ____ 4 Is the unit properly grounded ____ 5 Have all the power terminals in the control panel been checked for tightness This is imperative since stranded wire...

Страница 23: ...ressure on the display It should read 3 or 4 psi higher than the desired sys tem pressure If not remove the protective cap on the pilot control valve and loosen the jam nut on the adjusting stem of the PRV Slowly turn the stem clockwise to increase the delivery pressure and counter clockwise to decrease pressure Note that a pilot valve furnished for a 20 to 300 psi range will change the main valve...

Страница 24: ...he valve cover plate there is a leak passing the diaphragm into the upper chamber f Remove valve cover plate for inspection Remove cancerous buildups which may prevent dia phragm from lifting fully Check for binding of valve stem assembly g Opening speed control valve Item 4 clogged in restricted flow mode out of PRV valve cover h Orifice Item 3 missing The orifice fitting identical in appearance ...

Страница 25: ...re gauge reads 3 4 psi above the desired system pressure 7 3 Balancing the Settings a Between two or more equal pumps 1 Check the motor amps of each pump quickly to reduce the possibility of load changes dur ing reading with both or all equal size pumps running simultaneously controller in hand if necessary to stabilize pump operation 2 Select the lower reading of two equal pumps and balance the a...

Страница 26: ...y coated bronze trim valves with 30 300 pilot CRD spring range B G Part No Size Angle Style for 70M Globe Style for 70E 11 2 NPT S11230 S11882 2 Flanged S11231 S11883 21 2 Flanged S11232 S11884 3 Flanged S11233 S11885 4 Flanged S77535 N A Table II PRV Repair Kits PRV Size 11 2 2 21 2 3 4 Cla Val Repair Kit No 8155001E 8155002C 8155003A 8155004J 8155005F B G Part No 185251 185252 185253 185254 1852...

Страница 27: ...rent and line voltage for either single or 3 phase systems This data is entered into a microcontroller to calculate true power True power amps and volts are transmitted continuously to the 70E 70M OIP microprocessor These values are then used for staging and or display 1 1 SAFETY The PTB is an electronic board with high voltage It carries 3 phase voltage up to 600 volts Do not touch it There are n...

Страница 28: ...must also be the same phase as that inserted into the doughnut Which is AØ BØ or CØ is arbitrary but must be established to follow these rules Single Phase connect the hot line to AØ only and neutral to com Again AØ phase must be the same phase as inserted into the doughnut D Move voltage jumpers J3 and J6 to a voltage as close to actual as possible Jumpers on J3 and J6 must match each other E Mov...

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