Blue-White CHEM-FEED MD3 Series, Руководство по эксплуатации

Страница: 31 / 40

5.1 Signal Output
Sends a configurable 4 - 20 mA or frequency (Hz) signal to another pump or external device. This feature can be
used to control other pumps (in sync / proportionally), data logging systems, and other external devices for plant
automation.
Default settings: Disable
Navigate to Signal Output menu by pressing MENU button, then selecting Output Setup, and then Signal
Output .
Select your desired Signal output using UP or DOWN arrows.
Press ENTER to configure the output signal.
Press UP or DOWN arrow to scroll through 0 - 9 on selected digit.
Press RIGHT arrow to scroll over to the next digit to the right. If you pass your desired digit, you can easily scroll
back by continuously pressing RIGHT button.
Press ENTER to save the changes.
Continue this process until all four screens have been configured.
To navigate back out of the menu structure you must select <-Esc at bottom of every screen menu until you see
Run Mode screen displayed.
Example 1
6 4 8 10 12 14 16 18 20
0
25
50
75
100
Pump Motor Speed (%)
Milliamp Output (mA)
Signal
0% Pump Output = 4 mA
100 % Pump Output = 20 mA
- Signal Output
Frequency Output
Disable
Done
4-20 mA Output
Default 4 - 20 mA
output settings shown
- Signal Output
Disable
Done
4-20 mA Output
Default Frequency (Hz) output settings shown
Frequency Output
- Frequency Output - - 4 - 20 mA Output -
Example 2
6
4
8 10 12 14 16 18 20
0
25
50
75
100
Pump Motor Speed (%)
Milliamp Output (mA)
Signal
0% Pump Output = 4 mA
50% Pump Output = 16 mA
Example 1
0
25
50
75
100
Pump Motor Speed (%)
Frequency Output (Hz)
Signal
0% Pump Output = 0 Hz
100 % Pump Output = 1000 Hz
Example 2
0
25
50
75
100
Pump Motor Speed (%)
Frequency Output (Hz)
Signal
0% Pump Output = 1000 Hz
100% Pump Output = 0 Hz
0
200 400 600 800 1000
0 200 400 600 800 1000
- 4-20 mA Output
Signal @min flow:
Input mA Signal
@min flow
- 4-20 mA Output
Minimum % Motor:
Input Min % Motor
for mA Signal Output
- 4-20 mA Output
Signal @max flow:
Input mA signal
@max flow
- 4-20 mA Output
Maximum flow:
Input Maximum flow
for mA Signal output
- Freq. Output
Signal @min flow:
Input Frequency (Hz)
@min flow
000 0
- Freq. Output
Minimum % Motor:
Input Min % Motor
for Freq. output
00.0 0
- Freq. Output
Signal @max flow:
Input Frequency (Hz)
@max flow
000 1
- Freq. Output
Maximum flow:
Input Maximum flow
for Freq. Output
00.0 1
0 00.0
0 4.00
1 00.00
2 0.00
Prior to service, pump clean water through pump and suction / discharge line to remove
chemical.
Always wear protective clothing, face shield, safety glasses and gloves when working on or
near your metering pump. Additional precautions should be taken depending on solution
being pumped. Refer to MSDS precautions from your solution supplier.
!
CAUTION
!
CAUTION
6.0 Pump Maintenance
Page 30 Page 31
®
CHEM-FEED MD3
®
CHEM-FEED MD3
6.1 Routine Inspection and Maintenance
Pump requires very little maintenance. However, pump and all accessories should be checked weekly. This is
especially important when pumping chemicals. Inspect all components for signs of leaking, swelling, cracking,
discoloration or corrosion. Replace worn or damaged components immediately.
Cracking, crazing, discoloration during first week of operation are signs of severe chemical attack. If this occurs,
immediately remove chemical from pump. Determine which parts are being attacked and replace them with parts
that have been manufactured using more suitable materials. Manufacturer does not assume responsibility for
damage to pump that has been caused by chemical attack.
6.2 Cleaning Pump
Pump will require occasional cleaning, especially Injection fitting, Footvalve / Strainer, and pump head valves.
Frequency will depend on type and severity of service.
]
Inspect and replace pump head valves as required.
]
Periodically clean injection / check valve assembly, especially when injecting fluids that calcify such as sodium
hypochlorite. These lime deposits and other build ups can clog fitting, increase back pressure and interfere with
check valve operation.
]
Periodically clean suction strainer.
]
Periodically inspect pump housing (enclosure) for chemical attack. Protect pump housing from continuous
exposure to chemicals, such as drips or fumes from surrounding equipment and plumbing.
6.3 Replacing the Pump Diaphragm
]
When changing the diaphragm, the pump head chamber and pump head cover should be wiped free of any dirt
and debris. The pump stroke must be FORWARD when installing the diaphragm, and BACK when installing
and tightening the pump head.
]
When replacing the pump diaphragm, note the order of parts per the illustration below:
Piston
Backup washer
PTFE reinforcement ring
Diaphragm
Pump head
Pump