Section 5 - Operation; Power Up; Auto Operation - Bell and Gossett 70E Installation, Operation & Maintenance Instructions Manual

Multiple pump & control pressure booster systems
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SECTION 5 – OPERATION
5.1

POWER UP

5.1.1
Initial – turn selector switch to local or remote with
power on.
5.1.2
Message Scroll
A. "Booting"
B. "ITT Bell & Gossett"
"Pressure Booster"
C. "Technologic 70E"
"Pump Controller"
D. "Copyright 1995"
"Fluid Handling Division"
E. "FW Release VX.XX"
"Serial # XXXXX"
F. Normal Scroll per 4.5 commences
5.1.3
Set Up and System Configuration. User Menu.
A. Press the SETUP key. Enter the serial number fol-
lowed by the ENTER key.
B. Press the UP or DOWN arrow key to step through
user menu of paragraph 4.3.2. To change any
value press ENTER, modify the default value using
the numeric key pad, and then press ENTER to
load. Press CLEAR to exit menu.
5.2

AUTO OPERATION

5.2.1
Local (turn selector switch to local or remote).
5.2.2
Auto/Hand – select Auto.
5.2.3
Enable/Pump/s by pressing 1, 2, or 3 PUMP ENABLE
keys according to number of pumps in menu. Green
LED's flash.
5.2.4
Start/Stop – Press START/STOP key momentarily.
Green LED is on. Note: Only if selector switch is
turned to local or remote and at least 1 pump is
enabled. Message: Top Line – see below. Bottom
Line – "start up standby".
5.2.5
Pump Start – The first pump in the alternation
sequence starts and LED turns to solid green. Only 1
pump is on.
5.2.6
Alternation – If the alternation key is pressed the next
pump in sequence starts and both pumps then run
for 5 seconds at which time the first pump stops.
During alternation: Top Line – normal scroll. Bottom
Line – "Alt. Engaged standby".
If Alternation Timer picks up the action is the same as
above provided an entry other than 0 is made in the
user menu.
5.2.7
Staging – According to the method of staging selected
in the user menu, i.e., HP, AMPs, PSI, GPM the 2nd
pump in the alternation sequence will turn on when:
1. HP matches % stage value
or
2. AMP value matches % stage value
or
3. GPM value matches % stage value
or
4. Pressure matches PSI stage value
The third pump in the alternation sequence turns on
similarly.
Staging will not occur if:
1. No flow condition is on.
2. High suction is on.
3. Low suction is on.
4. High temperature is on.
5. High system in on.
6. Timed de-stage is on.
7. Starter feedback 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 the destage GPM
in the menu. The pump stops after a proof timer
and then a minimum run timer.
3. PSI setting of the destage PSI value in the menu
is reached. The destage PSI is higher than stage
PSI and a proof timer and the minimum run timer
time out.
All of these methods of destaging are exclusive and
may not be mixed.
5.2.9
Pump Shut Down occurs when:
5.2.9.1 High Suction Pressure analog signal triggers when
"High Suction Pressure" of the menu is reached and
the "High Suction Pressure Timer" of the menu ex-
pires. All pumps stop. Alarm message is set. Pumps
start when "High Suction Reset" is reached.
5.2.9.2 Low Suction analog signal reaches the level of "Low
Suction Pressure" in the menu and "Low Suction
Pressure Timer" in menu times out. All pumps stop.
Alarm message is set. Audio visual alarm is set.
Pumps restart when "Low Suction Reset" setting in
the menu is reached. Auto reset.
5.2.9.3 High System Pressure analog signal triggers when
"High System Pressure" of the menu is reached and
"High System Pressure Timer" of menu setting ex-
pires. All pumps stop. Alarm message is set. A-V
alarm turns on. Manual reset to start pumps.
5.2.9.4 Low System Pressure analog reaches menu setting
"Low System Pressure" and after "Low System
Pressure Timer" menu setting times out the alarm
message is set. Does not stop pumps. Auto reset.
5.2.9.5 High Temperature analog reaches "High Temperature
Cut Out" value of the menu. The "High Temperature
Pressure Timer" times out. Alarm message set.
Pump/s stop. Auto reset occurs when "High Temp-
erature Reset" of the menu is reached. NOTE: A value
must be entered for temperature display.
5.2.9.6 Low Level probes detect low level. After non-
accessible proof timer of 5 seconds the pumps stop.
Alarm message is set. When level returns to normal
and another non-accessible proof timer of 5 seconds
times out the pumps start. Auto reset.
15

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