March 2004
P h o n e : ( 5 8 5 ) 4 2 6 - 0 9 9 0
w w w . j e s c o a m e r i c a . c o m
F a x : ( 5 8 5 ) 4 2 6 - 4 0 2 5
SD 6.6
Digital Display (DX Only)
Digital Display (DX Only)
Digital Display (DX Only)
Digital Display (DX Only)
Digital Display (DX Only)
The display indicates two types of information.
First, it reflects the number of strokes per minute.
Second, if an error occurs in the metering system,
a specific error message will be displayed.
6. Maintenance
General
General
General
General
General
1. After the first several hours of operation, turn
off the pump and tighten all hardware and
fittings. Retighten as needed to prevent
leakage. Do not overtighten plastic fittings.
2. Clean exterior of pump as needed with mild
soap liquid.
3. Clean and inspect check valves and dia-
phragms annually. Replace if needed.
After the First 80 Hours of Operation
After the First 80 Hours of Operation
After the First 80 Hours of Operation
After the First 80 Hours of Operation
After the First 80 Hours of Operation
1. Clean and inspect check valves and dia-
phragm. Replace if damaged. See Replacing
Replacing
Replacing
Replacing
Replacing
the Diaphragm
the Diaphragm
the Diaphragm
the Diaphragm
the Diaphragm procedure and disassembly
of check valves.
3. Check pump wetted end for leaks. Retighten
connections and fasteners as necessary.
Replacing the Diaphragm
Replacing the Diaphragm
Replacing the Diaphragm
Replacing the Diaphragm
Replacing the Diaphragm
1. Adjust stroke length knob to 0%.
2. Shut off pump and close shutoff valves in the
suction and discharge lines. Relieve pressure.
Drain suction and discharge lines if possible.
Caution: Pressure must be relieved
Caution: Pressure must be relieved
Caution: Pressure must be relieved
Caution: Pressure must be relieved
Caution: Pressure must be relieved
before proceeding. If pressure is not
before proceeding. If pressure is not
before proceeding. If pressure is not
before proceeding. If pressure is not
before proceeding. If pressure is not
relieved, dangerous chemical spray may
relieved, dangerous chemical spray may
relieved, dangerous chemical spray may
relieved, dangerous chemical spray may
relieved, dangerous chemical spray may
result.
result.
result.
result.
result.
3. Disconnect union nuts from check valves.
4. Remove pump head mounting bolts and pull
pump head/check valve assembly away from
pump. Note orientation of check valves (flow
arrows must point up). The head must not be
reinstalled upside down.
5. Turn diaphragm counterclockwise to unscrew it
from pump push rod. Note orientation of
diaphragm support plate behind diaphragm.
6. Install the support plate onto diaphragm. Install
new diaphragm by screwing it clock-wise into
pump push rod.
7. Clean inside of pump head, using appropriate
cleaning fluid compatible with materials of
construction and metered chemical.
8. Reinstall pump head, noting orientation of
check valves. Tighten head bolts evenly using
an alternating crisscross pattern.
9. Reassemble suction and discharge lines, n
shutoff valves and start pump according to the
Start Up and Operation Instructions
Start Up and Operation Instructions
Start Up and Operation Instructions
Start Up and Operation Instructions
Start Up and Operation Instructions
,
Section 5, page 1.4.
10.
Check for leaks and tighten accordingly.
Operation & MaintOperation & MaintOperation & MaintOperation & MaintOperation & Maint
enance Insenance Insenance Insenance Insenance Ins
tructions tructions tructions tructions tructions
MA
GDOS DEDX
Normal Operation
Display Meaning
80
Stroke frequency of 80 strokes per
minute while operating in either
internal or external signal control
1.1
Operating condition: External
pulse control with contact ratio 1:1
1.16
Operating condition: External
pulse control with pulse
multiplication factor 16
8.1
Operating condition: External
pulse control with pulse division
divisor 8
Error Indication
Display Meaning
E-L
"Tank Empty" message
I-E
Loss of analog signal (i.e. cable
breakage)
OFL
Input signal greater than 20 mA
with 0-20 or 4-20 mA control
OFF
Selector switch is set to "0", pump
does not operate
