U.S. Patent #
5,851,109; 5,996,627;
400,210 & 6,241,487
Other U.S. Patents
Applied for
M10 Non-Metallic
Design Level 1
Ball Valve
Air-Operated
Double Diaphragm Pump
ENGINEERING, PERFORMANCE
& CONSTRUCTION DATA
INTAKE/DISCHARGE PIPE SIZE
1" ANSI Flange
CAPACITY
0 to 23 US gallons per minute
(0 to 87 liters per minute)
AIR VALVE
No-lube, no-stall
design
SOLIDS-HANDLING
Up to .15 in. (4mm)
HEADS UP TO
100 psi or 231 ft. of water
(7 bar or 70 meters)
DISPLACEMENT/STROKE
.026 US gallon / .098 liter
CAUTION! Operating temperature limitations are as follows:
Operating Temperatures
Materials Maximum* Minimum* Optimum**
Santoprene
life. Excellent abrasion resistance. 135°C -40°C 10°C to 100°C
PTFE Chemically inert, virtually impervious. Very few chemicals are known to react chemically with
Teon: molten alkali metals, turbulent liquid or gaseous uorine and a few uoro-chemicals such as 220°F -35°F 50°F to 212°F
chlorine triuoride or oxygen diuoride which readily liberate free uorine at elevated temperatures. 104°C -37°C 10°C to 100°C
PVDF 250°F 0°F121°C -18°C
Polypropylene 180°F 32°F 82°C 0°C
Polyurethane
Nylon
FKM (Fluorocarbon): Shows good resistance to a wide range of oils and solvents; especially all aliphatic,
aromatic and halogenated hydrocarbons, acids, animal and vegetable oils. Hot water or hot aqueous
solutions (over 70°F) will attack FKM.
®
Injection molded thermoplastic elastomer with no fabric layer. Long mechanical ex 275°F -40°F 50° to 212°F
210°F
99°C
180°F
82°C
350°F
177°C
-40°F
-40°C
32°F
0°C
-40°F
-40°C
-40°F to 210°F
-40°C to 99°C
For specic applications, always consult “Chemical Resistance Chart” Technical Bulletin
MARATHON® pumps are designed to be powered only by compressed air.
M10nmdl1sm-rev0513 Models M10 Non-Metallic Page 1
*Denite reduction in service life.
**Minimal reduction in service life at ends of range.
Performance based on the following: elastomer fitted pump, flooded suction, water at ambient conditions.
MODEL M10 Non-Metallic Performance Curve
The use of other materials and varying hydraulic conditions may result in deviations in excess of 5%.
PSI
4 (7)
100 PSI (6.8 Bar)
90
80
80 PSI (5.44 Bar)
70
60
60 PSI (4.08 Bar)
50
40
40 PSI (2.72 Bar)
30
20
20 PSI (1.36 Bar)
10
0
02468101214161820222426
8 (13.5)
12 (20)
16 (27)
20 (34)
Air Inlet Pressure
U.S. Gallons per minute
FEET
30
25
20
15
10
5
NPSHR
METERS
9.1
7.6
6
4.5
3
1.5
1020304050607080901000
Liters per minute
CAPACITY
M10nmdl1sm-rev0513 Models M10 Non-Metallic Page 3
Dimensions: M10 Non-Metallic
ANSI STYLE
ANSI STYLE
Dimensions in Inches
Dimensional tolerance: ±1/8"
Dimension
Standard Pump
Pulse Output Kit
Mesh Mufer
M10nmdl1sm-rev0513 Models M10 Non-Metallic Page 4
A
4 1/16"
4 1/16"
5 3/4"
B
7 9/16"
9 5/16"
9 1/4"
Metric Dimensions: M10 Non-Metallic
ANSI STYLE
ANSI STYLE
Dimensions in Millimeters
Dimensional tolerance: ±3mm
Dimension
Standard Pump
Pulse Output Kit
Mesh Mufer
M10nmdl1sm-rev0513 Models M10 Non-Metallic Page 5
A
103mm
103mm
146mm
B
192mm
192mm
235mm
PRINCIPLE OF PUMP OPERATION
This ball type check valve pump
is powered by compressed air and is
a 1:1 ratio design. The inner side of
one diaphragm chamber is alternately
pressurized while simultaneously
exhausting the other inner chamber.
This causes the diaphragms, which
are connected by a common rod
secured by plates to the centers of the
diaphragms, to move in a reciprocating
action. (As one diaphragm performs the
discharge stroke the other diaphragm is
pulled to perform the suction stroke in
the opposite chamber.) Air pressure is
applied over the entire inner surface of
the diaphragm while liquid is discharged
from the opposite side of the diaphragm.
The diaphragm operates in a balanced
condition during the discharge stroke
which allows the pump to be operated
at discharge heads over 200 feet (61
meters) of water.
For maximum diaphragm life, keep
the pump as close to the liquid being
pumped as possible. Positive suction
head in excess of 10 feet of liquid
(3.048 meters) may require a back
pressure regulating device to maximize
diaphragm life.
Alternate pressurizing and
exhausting of the diaphragm chamber
is performed by an externally mounted,
pilot operated, four way spool type
air distribution valve. When the spool
shifts to one end of the valve body, inlet
pressure is applied to one diaphragm
chamber and the other diaphragm
chamber exhausts. When the spool
shifts to the opposite end of the valve
body, the pressure to the chambers
is reversed. The air distribution valve
spool is moved by a internal pilot valve
which alternately pressurizes one end
of the air distribution valve spool while
exhausting the other end. The pilot valve
is shifted at each end of the diaphragm
stroke when a actuator plunger is
contacted by the diaphragm plate. This
actuator plunger then pushes the end
of the pilot valve spool into position to
activate the air distribution valve.
The chambers are connected with
manifolds with a suction and discharge
check valve for each chamber,
maintaining flow in one direction
through the pump.
INSTALLATION AND START-UP
Locate the pump as close to the
product being pumped as possible.
Keep the suction line length and
number of ttings to a minimum. Do not
reduce the suction line diameter.
For installations of rigid piping,
short sections of exible hose should
be installed between the pump
and the piping. The flexible hose
reduces vibration and strain to the
pumping system. A surge suppressor
is recommended to further reduce
pulsation in ow.
AIR SUPPLY
Air supply pressure cannot exceed
100 psi (7 bar). Connect the pump
air inlet to an air supply of sufcient
capacity and pressure required for
desired performance. When the air
supply line is solid piping, use a short
length of exible hose not less than
1/2" (13mm) in diameter between
the pump and the piping to reduce
strain to the piping. The weight of the
air supply line, regulators and lters
must be supported by some means
other than the air inlet cap. Failure to
provide support for the piping may result
in damage to the pump. A pressure
regulating valve should be installed
to insure air supply pressure does not
exceed recommended limits.
AIR VALVE LUBRICATION
The air distribution valve and the
pilot valve are designed to operate
WITHOUT lubrication. This is the
preferred mode of operation. There may
be instances of personal preference
or poor quality air supplies when
lubrication of the compressed air
supply is required. The pump air system
will operate with properly lubricated
compressed air supply. Proper
lubrication requires the use of an air line
lubricator (available from Warren Rupp)
set to deliver one drop of SAE 10 nondetergent oil for every 20 SCFM (9.4
liters/sec.) of air the pump consumes
at the point of operation. Consult the
pump’s published Performance Curve
to determine this.
AIR LINE MOISTURE
Water in the compressed air supply
can create problems such as icing or
freezing of the exhaust air, causing
the pump to cycle erratically or stop
operating. Water in the air supply can
be reduced by using a point-of-use
air dryer to supplement the user’s air
drying equipment. This device removes
water from the compressed air supply
and alleviates the icing or freezing
problems.
AIR INLET AND PRIMING
To start the pump, open the air
valve approximately 1/2" to 3/4" turn.
After the pump primes, the air valve
can be opened to increase air ow as
desired. If opening the valve increases
cycling rate, but does not increase the
rate of ow, cavitation has occurred.
The valve should be closed slightly to
obtain the most efcient air ow to pump
ow ratio.
BETWEEN USES
When the pump is used for materials
that tend to settle out or solidify when
not in motion, the pump should be
flushed after each use to prevent
damage. (Product remaining in the
pump between uses could dry out or
settle out. This could cause problems
with the diaphragms and check valves
at restart.) In freezing temperatures
the pump must be completely drained
M10nmdl1sm-rev0513 Models M10 Non-Metallic Page 6
INSTALLATION GUIDE
Top Discharge Ball Valve Unit
Available from
Warren Rupp
1
DA10 Surge Dampener
020-049-000 Filter/Regulator
2
3
Air Dryer
CAUTION
The air exhaust should be
piped to an area for safe
disposition of the product
being pumped, in the event
of a diaphragm failure.
1
Surge
Dampener
Limited to
100 psi
3
2
M10nmdl1sm-rev0513 Models M10 Non-Metallic Page 7
between uses in all cases.
TROUBLESHOOTING
Possible Symptoms:
• Pump will not cycle.
• Pump cycles, but produces no ow.
• Pump cycles, but ow rate is
unsatisfactory.
• Pump cycle seems unbalanced.
• Pump cycle seems to produce
excessive vibration.
What to Check: Excessive suction lift
in system.
Corrective Action: For lifts exceeding
20 feet (6 meters), lling the pumping
chambers with liquid will prime the
pump in most cases.
What to Check: Excessive flooded
suction in system.
Corrective Action: For flooded
conditions exceeding 10 feet (3 meters)
of liquid, install a back pressure device.
What to Check: System head exceeds
air supply pressure.
Corrective Action: Increase the
inlet air pressure to the pump. Most
diaphragm pumps are designed for 1:1
pressure ratio at zero ow.
What to Check: Air supply pressure or
volume exceeds system head.
Corrective Action: Decrease inlet
air pressure and volume to the
pump as calculated on the published
PERFORMANCE CURVE. Pump is
cavitating the uid by fast cycling.
What to Check: Undersized suction
line.
Corrective Action: Meet or exceed
pump connection recommendations
shown on the DIMENSIONAL
DRAWING.
What to Check: Restricted or
undersized air line.
Corrective Action: Install a larger
air line and connection. Refer to air
inlet recommendations shown in your
pump’s SERVICE MANUAL.
What to Check: Check ESADS, the
Externally Serviceable Air Distribution
System of the pump.
Corrective Action: Disassemble and
inspect the main air distribution valve,
pilot valve and pilot valve actuators.
Refer to the parts drawing and air valve
section of the SERVICE MANUAL.
Check for clogged discharge or closed
valve before reassembly.
What to Check: Rigid pipe connections
to pump.
Corrective Action: Install flexible
connectors and a surge suppressor.
What to Check: Blocked air exhaust
mufer.
Corrective Action: Remove mufer
screen, clean or de-ice and reinstall.
Refer to the Air Exhaust section of your
pump SERVICE MANUAL.
What to Check: Pumped uid in air
exhaust mufer.
Corrective Action: Disassemble
pump chambers. Inspect for diaphragm
rupture or loose diaphragm plate
assembly. Refer to the Diaphragm
Replacement section of your pump
SERVICE MANUAL.
What to Check: Suction side air
leakage or air in product.
Corrective Action: Visually inspect
all suction side gaskets and pipe
connections.
What to Check: Obstructed check
valve.
Corrective Action: Disassemble the
wet end of the pump and manually
dislodge obstruction in the check valve
pocket. Refer to the Check Valve
section of the pump SERVICE MANUAL
for disassembly instructions.
What to Check: Worn or misaligned
check valve or check valve seat.
Corrective Action: Inspect check
valves and seats for wear and proper
seating. Replace if necessary. Refer
to Check Valve section of the pump
SERVICE MANUAL for disassembly
instructions.
What to Check: Blocked suction line.
Corrective Action: Remove or ush
obstruction. Check and clear all suction
screens and strainers.
What to Check: Blocked discharge
line.
Corrective Action: Check for
obstruction or closed discharge line
valves.
What to Check: Blocked pumping
chamber.
Corrective Action: Disassemble
and inspect the wetted chambers
of the pump. Remove or flush any
obstructions. Refer to the pump
SERVICE MANUAL for disassembly
instructions.
What to Check: Entrained air or vapor
lock in one or both pumping chambers.
Corrective Action: Purge chambers
through tapped chamber vent plugs.
PURGING THE CHAMBERS OF AIR
CAN BE DANGEROUS! Contact the
Warren Rupp Technical Service Team
before performing this procedure. A
model with top-ported discharge will
reduce or eliminate problems with
entrained air.
If your pump continues to perform
below your expectations, contact your
local Warren Rupp Distributor or factory
Technical Service Team for a service
evaluation.
WARRANTY
Refer to the enclosed Warren Rupp
Warranty Certicate.
M10nmdl1sm-rev0513 Models M10 Non-Metallic Page 8
Recycling
Many components of MARATHON®
Metallic AODD pumps are made of
recyclable materials (see chart on
page 9 for material specifications).
We encourage pump users to recycle
worn out parts and pumps whenever
possible, after any hazardous pumped
uids are thoroughly ushed.
Important Safety
Information
IMPORTANT
Read these safety warnings
and instructions in this
manual completely, before
installation and start-up
of the pump. It is the
responsibility of the purchaser to retain this
manual for reference. Failure to comply with
the recommendations stated in this manual will
damage the pump, and void factory warranty.
CAUTION
Before pump operation,
inspect all gasketed
fasteners for looseness
caused by gasket creep. Re-
torque loose fasteners to
prevent leakage. Follow recommended torques
stated in this manual.
WARNING
Before maintenance
or repair, shut off the
compressed air line,
bleed the pressure, and
disconnect the air line from
the pump. The discharge
line may be pressurized and must be bled of
its pressure.
WARNING
Take action to prevent
static sparking. Fire or
explosion can result,
especially when handling
flammable liquids. The
pump, piping, valves, containers or other
miscellaneous equipment must be grounded.
WARNING
This pump is pressurized
internally with air pressure
during operation. Always
make certain that all bolting
is in good condition and
that all of the correct
bolting is reinstalled during assembly.
WARNING
In the event of diaphragm
rupture, pumped material
may enter the air end of the
pump, and be discharged
into the atmosphere. If
pumping a product which is hazardous or toxic,
the air exhaust must be piped to an appropriate
area for safe disposition.
WARNING
Before doing any
maintenance on the pump,
be certain all pressure is
completely vented from the
pump, suction, discharge,
piping, and all other openings and connections.
Be certain the air supply is locked out or made
non-operational, so that it cannot be started
while work is being done on the pump. Be
certain that approved eye protection and
protective clothing are worn all times in the
vicinity of the pump. Failure to follow these
recommendations may result in serious injury
or death.
Pump complies with EN809 Pumping Directive, Directive
98/37/EC Safety of Machinery. For reference to the
declarations of conformity visit: www.warrenrupp.com.
M10nmdl1sm-rev0513 Models M10 Non-Metallic Page 9
WARNING
When used for toxic or
aggressive uids, the pump
should always be ushed
clean prior to disassembly.
WARNING
Airborne particles and loud
noise hazards.
Wear ear and eye protection.
Material Codes
The Last 3 Digits of Part Number
000 Assembly, sub-assembly;
and some purchased items
010 Cast Iron
012 Powered Metal
015 Ductile Iron
020 Ferritic Malleable Iron
025 Music Wire
080 Carbon Steel, AISI B-1112
100 Alloy 20
110 Alloy Type 316 Stainless Steel
111 Alloy Type 316 Stainless Steel
(Electro Polished)
112 Alloy C
113 Alloy Type 316 Stainless Steel
1 031-166-000 Air Valve Assembly 1
1-A 095-106-551 Body, Air Valve 1
1-B 031-132-000 Sleeve and Spool Set 1
1-C 560-101-360 O-Ring 8
1-E 165-122-551 End Cap 2
1-F 560-026-360 O-Ring 2
1-G 675-062-115 End Cap Retainer 2
1-H 530-031-550 Mufer 1
1-I 165-109-551 Mufer Cap 1
1-J 710-011-115 Self-Tapping Screw 4
For Pumps with Virgin PTFE coated hardware:
1 031-166-002 Air Valve Assembly 1
1-G 675-062-308 End Cap Retainer 2
1-J 710-011-308 Self Tapping Screw 4
(Includes all other items used on 031-166-000 above)
For Pumps with alternate Mesh or Sound Dampening Mufers or Piped
Exhaust:
1 031-168-000 Air Valve Assembly 1
(Includes all items used on 031-166-000 above minus 1-H, 1-I and 1-J)
To service the air valve rst shut
off the compressed air, bleed pressure
from the pump, and disconnect the air
supply line from the pump.
STEP #1: See COMPOSITE
REPAIR PARTS DRAWING.
Using a 3/8" wrench or socket,
remove the four hex anged capscrews
(item 12). Remove the air valve
assembly from the pump.
STEP #2: Disassembly of the
air valve.
To access the internal air valve
components rst remove the two end
cap retainers (item 1-G) by inserting
a small at screwdriver into the two
slotted grooves on the valve body and
gently lifting the retainers out.
Next remove the two end caps (item
1-E) by grasping the pull tab with nger
and thumb or pliers and tugging. Inspect
the two o-rings (items 1-C and 1-F) on
each end cap for wear or cuts. Replace
the o-rings if necessary.
Remove the spool (part of item
1-B) from the sleeve. Be careful not to
scratch or damage the outer diameter
of the spool. Wipe spool with a soft
clean cloth and inspect for scratches
or abrasive wear.
Inspect the inner diameter of the
sleeve (part of item 1-B) for dirt,
scratches, or other contaminants.
Remove the sleeve if needed and
replace with a new sleeve and spool
set (item 1-B). Note: The sleeve and
spool set is match-ground to a specied
clearance. Sleeves and spools cannot
be interchanged.
STEP #3: Reassembly of the air
distribution valve.
Install one end cap with o-rings
(items 1-E, 1-C, and 1-F) into one end of
the air valve body (item 1-A). Insert one
end cap retainer (item 1-G) into the two
smaller holes, align with groove in the
end cap, and push until the closed end
of the retainer is below the at surface
of the valve body.
Remove the new sleeve and spool
set (item 1-B) from the plastic bag.
Carefully remove the spool from the
sleeve. Install the six o-rings (item 1-C)
into the six grooves on the sleeve. Apply
a light coating of grease to the o-rings
before installing the sleeve into the
valve body. Align the slots in the sleeve
with the slots in the valve body. Insert
the spool into the sleeve. Be careful
not to scratch or damage the spool
during installation. Push the spool in
until the pin touches the end cap on the
opposite end.
Install the remaining end cap with
o-rings and retaining ring.
Fasten the air valve assembly (item
1) and gasket (item 23) to the pump,
using the four hex anged capscrews
(item 12).
Connect the compressed air line
to the pump. The pump is now ready
for operation.
IMPORTANT
Read these instructions
completely, before
installation and start-up.
It is the responsibility
of the purchaser to retain this manual
for reference. Failure to comply with
the recommendations stated in this
manual will damage the pump, and void
factory warranty.
Air Valve with Stroke Indicator Assembly Drawing, Parts List
MAIN AIR VALVE ASSEMBLY PARTS LIST
Item Part Number Description Qty
1 031-167-000 Air Valve Assembly 1
1-A 095-106-559 Body, Air Valve 1
1-B 031-134-000 Sleeve and Spool Set 1
1-C 560-101-360 O-Ring 8
1-D 132.030.552 Bumper 2
1-E 165-123-147 End Cap 2
1-F 560-029-360 O-Ring 2
1-G 675-062-115 End Cap Retainer 2
1-H 210-008-330 Safety Clip 1
1-I 530-031-550 Mufer 1
1-J 165-109-559 Mufer Cap 1
1-K 710-011-115 Self-Tapping Screw 4
For Pumps with Virgin PTFE coated hardware:
1 031-167-002 Air Valve Assembly 1
1-G 675-062-308 End Cap Retainer 2
1-J 710-011-308 Self Tapping Screw 4
(Includes all other items used on 031-166-000 above)
For Pumps with alternate Mesh or Sound Dampening Mufers or Piped
Exhaust:
1 031-169-000 Air Valve Assembly 1
(Includes all items used on 031-167-000 above minus 1-H, 1-I and 1-J)
AIR DISTRIBUTION VALVE WITH
STROKE INDICATOR OPTION
SERVICING
To service the air valve rst shut
off the compressed air, bleed pressure
from the pump, and disconnect the air
supply line from the pump.
STEP #1: See COMPOSITE
REPAIR PARTS DRAWING.
Using a 3/8" wrench or socket,
remove the four hex anged capscrews
(item 12). Remove the air valve
assembly from the pump.
STEP #2: Disassembly of the air
valve.
To access the internal air valve
components rst remove the two end
cap retainers (item 1-G) by inserting
a small at screwdriver into the two
slotted grooves on the valve body and
gently lifting the retainers out.
Next remove the two end caps (item
1-E) by grasping the pull tab with nger
and thumb or pliers and tugging. Inspect
the two o-rings (items 1-C and 1-F) on
each end cap for wear or cuts. Replace
the o-rings if necessary.
Remove the spool (part of item
1-B) from the sleeve. Be careful not to
scratch or damage the outer diameter
of the spool. Wipe spool with a soft
clean cloth and inspect for scratches
or abrasive wear.
Inspect the inner diameter of the
sleeve (part of item 1-B) for dirt,
scratches, or other contaminants.
Remove the sleeve if needed and
replace with a new sleeve and spool
set (item 1-B). Note: The sleeve and
spool set is match-ground to a specied
clearance. Sleeves and spools cannot
be interchanged.
STEP #3: Reassembly of the air
distribution valve.
Install one end cap with o-rings
(items 1-E, 1-C, and 1-F) into one end of
the air valve body (item 1-A). Insert one
end cap retainer (item 1-G) into the two
smaller holes, align with groove in the
end cap, and push until the closed end
of the retainer is below the at surface
of the valve body.
Remove the new sleeve and spool
set (item 1-B) from the plastic bag.
Carefully remove the spool from the
sleeve. Install the six o-rings (item 1-C)
into the six grooves on the sleeve. Apply
a light coating of grease to the o-rings
before installing the sleeve into the
valve body. Align the slots in the sleeve
with the slots in the valve body. Insert
the spool into the sleeve. Be careful
not to scratch or damage the spool
during installation. Push the spool in
until the pin touches the end cap on the
opposite end.
Install the remaining end cap with
o-rings and retaining ring.
Fasten the air valve assembly (item
1) and gasket (item 23) to the pump,
using the four hex anged capscrews
(item 12).
Connect the compressed air line
to the pump. The pump is now ready
for operation.
IMPORTANT: Remove the safety
clip. The pump will not function properly
until it is removed. The pump is now
ready for operation.
IMPORTANT
Read these instructions
completely, before
installation and start-up.
It is the responsibility
of the purchaser to retain this manual
for reference. Failure to comply with
the recommendations stated in this
manual will damage the pump, and void
factory warranty.
Pilot Valve Servicing, Assembly Drawing & Parts List
PILOT VALVE ASSEMBLY PARTS LIST
ITEM PART NUMBER DESCRIPTION QTY
3 095-091-000 Pilot Valve Assembly 1
3-A 095-087-551 Valve Body 1
3-B 755-051-000 Sleeve (With O-rings) 1
3-C 560-033-379 O-ring (Sleeve) 6
3-D 775-055-000 Spool (With O-rings) 1
3-E 560-023-379 O-ring (Spool) 3
3-F 675-037-080 Retaining Ring 1
PILOT VALVE SERVICING
To service the pilot valve rst shut
off the compressed air supply, bleed
the pressure from the pump, and
disconnect the air supply line from the
pump.
STEP #1: See pump assembly
drawing.
Using a 7/16" wrench or socket,
remove the four capscrews (item 12).
Remove the air inlet cap (item 8) and
air inlet gasket (item 18). The pilot valve
assembly (item 3) can now be removed
STEP #2: Disassembly of the pilot
valve.
Remove the pilot valve spool (item
3-D). Wipe clean and inspect spool and
o-rings for dirt, cuts or wear. Replace
the o-rings and spool if necessary.
Remove the retaining ring (item
3-F) from the end of the sleeve (item
3-b) and remove the sleeve from the
valve body (item 3-A). Wipe clean and
inspect sleeve and o-rings for dirt, cuts
or wear. Replace the o-rings and sleeve
if necessary.
STEP #3: Re-assembly of the pilot
valve.
Generously lubricate outside
diameter of the sleeve and o-rings.
Then carefully insert sleeve into valve
body. Take CAUTION when inserting
sleeve, not to shear any o-rings. Install
retaining ring to sleeve. Generously
lubricate outside diameter of spool and
o-rings. Then carefully insert spool into
sleeve. Take CAUTION when inserting
spool, not to shear any o-rings. Use
BP-LS-EP-2 multipurpose grease,
or equivalent.
STEP #4: Re-install the pilot valve
assembly into the intermediate.
Be careful to align the ends of the
pilot valve stem between the plunger
pins when inserting the pilot valve into
the cavity of the intermediate.
Re-install the gasket, air inlet cap
and capscrews. Connect the air supply
to the pump. The pump is now ready
for operation.
Warren Rupp’s solenoid shifted,
air distribution valve option utilizes
electrical signals to precisely control
your MARATHON’s speed. The
solenoid coil is connected to a customer
- supplied control. Compressed air
provides the pumping power, while
electrical signals control pump speed
(pumping rate).
OPERATION
The Solenoid Shifted MARATHON has a
solenoid operated, air distribution valve
in place of the standard MARATHON’s
pilot operated, air distribution valve.
Where a pilot valve is normally utilized
to cycle the pump’s air distribution
valve, an electric solenoid is utilized.
As the solenoid is powered, one of the
pump’s air chambers is pressurized
while the other chamber is exhausted.
When electric power is turned off, the
solenoid shifts and the pressurized
chamber is exhausted while the other
chamber is pressurized. By alternately
applying and removing power to the
solenoid, the pump cycles much like a
standard MARATHON pump, with one
exception. This option provides a way
to precisely control and monitor pump
speed.
Solenoid Connector
Before wiring, remove
terminal block from
conduit connector.
Wiring
Diagram
#2 Terminal Neutral
(Negative)
3rd Terminal for
ground.
#1 Terminal
Power
(Positive)
To Control
BEFORE INSTALLATION
Before wiring the solenoid, make
certain it is compatible with your
system voltage.
*NOTE: It is recommended that when plunger components are
serviced, new retaining rings be installed.
ACTUATOR PLUNGER SERVICING
To service the actuator plunger rst
shut off the compressed air supply,
bleed the pressure from the pump, and
disconnect the air supply line from the
pump.
Step #1: See PUMP ASSEMBLY
DRAWING.
Using a
3/8" wrench or socket,
remove the four capscrews (items 12).
Remove the air inlet cap (item 8) and
air inlet gasket (item 20). The pilot valve
assembly (item 3) can now be removed.
Step #2: Servicing the actuator
plungers.
See PUMP ASSEMBLY DRAWING.
The actuator plungers (items 28)
can be reached through the stem cavity
of the pilot valve in the intermediate
bracket (item 4). To service bushings,
o-rings and retaining rings, see
Intermediate Drawing.
Remove the plungers (items 28) from
the bushings (item 7) in each end of the
intermediate cavity. Inspect for wear or
damage. Replace plunger as needed.
Apply a light coating of grease to each
o-ring and re-install the plungers in to
the bushings. Push the plungers in as
far as they will go.
Step #3: Re-install the pilot valve
assembly into the intermediate
assembly.
Be careful to align the ends of
the stem between the plungers when
inserting the stem of the pilot valve into
the cavity of the intermediate.
Re-install the gasket (item 20),
air inlet cap (item 8) and capscrews
(items 12).
Connect the air supply to the pump.
The pump is now ready for operation.
PLUNGER BUSHING, O-RING, AND
RETAINING RING SERVICING
To service the plunger bushing
components first remove the two
retaining rings (items 30) using a
small flat screwdriver. *Note: It is
recommended that new retaining rings
be installed.
Next remove the two plunger
bushings (items 7). Inspect the bushings
for wear or scratches. Replace the
bushings as necessary.
Inspect the two o-rings (25) for cuts
and/or wear.
IMPORTANT
Read these instructions
completely, before
installation and start-up.
It is the responsibility of
the purchaser to retain
this manual for reference. Failure to
comply with the recommendations stated
in this manual will damage the pump, and
void factory warranty.
Before servicing the check valves,
rst shut off the suction line and then
the discharge line to the pump. Next,
shut off the compressed air supply,
bleed air pressure from the pump, and
disconnect the air supply line from
the pump. Drain any remaining uid
from the pump. The pump can now be
removed for service.
To access the modular check valve,
remove the elbows (items 17 from
pump composite repair parts drawing).
Use a 1/2" wrench or socket to remove
the fasteners. Once the elbows are
removed, the modular check valves
can be seen in the cavities of the outer
chamber (items 14).
Next remove the check valve seal
(item 34). Inspect the seal for cuts
or pinched areas. Replace seal as
needed.
Disassemble the component parts of
each modular check valve. Inspect the
check valve retainer (item 29) for cuts,
abrasive wear, or embedded materials.
Replace as needed.
Inspect the check balls (items 2) for
wear, abrasion, or cuts on the spherical
surface. The check valve seats (items
35) should be inspected for cuts,
abrasive wear, or embedded material
on the surfaces of both the external
and internal chambers. The spherical
surface of the check balls must seat
ush to the surface of the inner chamfer
on the check valve seats for the pump to
operate to peak efciency. Replace any
worn or damaged parts as necessary.
Remove the check valve seal (item
34). Inspect the seal for cuts or pinched
areas. Replace seal as needed.
RE-ASSEMBLE THE MODULAR
CHECK VALVES.
Place a check valve seal (item 34)
into the cavity of the outer chamber
(item 14). Make sure the chamfer side
of the seal faces out. Insert the modular
check valve into the outer chamber
with the retainer facing up. Install a
check valve seal (item 34). Make sure
the chamfer side of the seals face the
chamfer on the check valve seat or
retainer.
The pump can now be reassembled,
reconnected and returned to operation.
IMPORTANT
Read these instructions
completely, before
installation and start-up.
It is the responsibility of
the purchaser to retain
this manual for reference. Failure to comply
with the recommendations stated in this
manual will damage the pump, and void
factory warranty.
To service the diaphragms first
shut off the suction, then shut off the
discharge lines to the pump. Shut
off the compressed air supply, bleed
the pressure from the pump, and
disconnect the air supply line from the
pump. Drain any remaining liquid from
the pump.
Step #1: See the pump composite
repair parts drawing, and the diaphragm
servicing illustration.
Using a 1/2" wrench or socket,
remove the 16 capscrews (items 9 &
10), and nuts that fasten the elbows
(items 17) to the outer chambers
(items 14). Remove the elbows with the
manifolds and spacers attached.
Step #2: Removing the outer
chambers.
Using a 1/2" wrench or socket,
remove the 16 capscrews (items
9 & 11), and nuts that fasten the
outer chambers, diaphragms, and
intermediate bracket (items 4) together.
Step #3: Removing the diaphragm
assemblies.
Use a 3/4" (19mm) wrench or six
pointed socket to remove the diaphragm
assemblies (outer plate, diaphragm,
and inner plate) from the diaphragm rod
(item 31) by turning counterclockwise.
Insert a 6-32 set screw into the
smaller tapped hole in the inner
diaphragm plate (item 27). Insert
the protruding stud and the 6-32
fastener loosely into a vise. Use a
3/4" wrench or socket to remove the
outer diaphragm plate (item 26) by
turning counterclockwise. Inspect the
diaphragm (item 15) for cuts, punctures,
abrasive wear or chemical attack.
Replace the diaphragms if necessary.
Step #4: Installing the diaphragms.
Push the threaded stud of the outer
diaphragm plate through the center
hole of the diaphragm. Thread the inner
plate clockwise onto the stud. Use a
torque wrench to tighten the diaphragm
assembly together to 90 in Lbs.
(10.17 Newton meters) 120 in lbs.
Santoprene (13.56 Newton meters).
Allow a minimum of 15 minutes to
elapse after torquing, then re-torque
the assembly to compensate for stress
relaxation in the clamped assembly.
Step #5: Installing the diaphragm
assemblies to the pump.
Make sure the bumper (item 6) is
installed over the diaphragm rod.
Thread the stud of the one diaphragm
assembly clockwise into the tapped
hole at the end of the diaphragm rod
(item 31) until the inner diaphragm plate
is ush to the end of the rod. Insert rod
into pump.
Align the bolt holes in the diaphragm
with the bolt pattern in the inner
chamber (item 4). Make sure the
molded directional arrows on the
diaphragm point vertically.
Fasten the outer chamber (item 14)
to the pump, using the capscrews (items
9 & 11), hex nuts and at washers.
On the opposite side of the pump,
pull the diaphragm rod out as far
as possible. Make sure the bumper
(item 6) is installed over the diaphragm
rod.
Thread the stud of the remaining
diaphragm assembly clockwise into the
tapped hole at the end of the diaphragm
rod (item 31) as far as possible and still
allow for alignment of the bolt holes
in the diaphragm with the bolt pattern
in the inner chamber. The molded
directional arrows on the diaphragm
must point vertically.
Fasten the remaining outer chamber
(item 14) to the pump, using the
capscrews (items 9 & 11) and nuts.
Step #6: Re-install the elbow/
spacer/manifold assemblies to the
pump, using the capscrews (items 9 &
10) and nuts.
The pump is now ready to be
re-installed, connected and returned to
operation.
OVERLAY DIAPHRAGM SERVICING
The PTFE overlay diaphragm (item
16) is designed to t snugly over the
exterior of the standard TPE diaphragm
(item 15).
The molded directional arrows
on the overlay diaphragm must point
vertically.
Follow the same procedures
described for the standard diaphragm
for removal and installation.
IMPORTANT
Read these instructions
completely, before
installation and start-up.
It is the responsibility of
the purchaser to retain
this manual for reference. Failure to
comply with the recommendations stated
in this manual will damage the pump, and
void factory warranty.
ONE PIECE DIAPHRAGM SERVICING
(Bonded PTFE with integral plate)
The One Piece diaphragm has a
threaded stud installed in the integral
plate at the factory. The inner diaphragm
plate has a through hole instead of a
threaded hole.
Place the inner plate over the
diaphragm stud and thread the rst
diaphragm / inner plate onto the
diaphragm rod only until the inner plate
contacts the rod. Do not tighten.
A small amount of grease may be
applied between the inner plate and the
diaphragm to facilitate assembly.
Insert the diaphragm / rod assembly
into the pump and install the outer
chamber. Turn the pump over and
thread the second diaphragm / inner
plate onto the diaphragm rod. Turn the
diaphragm until the inner plate contacts
the rod and hand tighten the assembly.
Continue tightening until the bolt holes
align with the inner chamber holes. DO
NOT LEAVE THE ASSEMBLY LOOSE.
When a diaphragm fails, the pumped
liquid or fumes enter the air end of the
pump. Fumes are exhausted into
the surrounding environment. When
pumping hazardous or toxic materials,
the exhaust air must be piped to an
appropriate area for safe disposal. See
illustration #1 at right.
This pump can be submerged if
the pump materials of construction
are compatible with the liquid being
pumped. The air exhaust must be
piped above the liquid level. See
illustration #2 at right. Piping used for
the air exhaust must not be smaller
than 1/2" (1.27 cm) diameter. Reducing
the pipe size will restrict air ow and
reduce pump performance. When the
pumped product source is at a higher
level than the pump (ooded suction
condition), pipe the exhaust higher than
the product source to prevent siphoning
spills. See illustration #3 at right.
IMPORTANT INSTALLATION NOTE:
The manufacturer recommends
installing a exible hose or connection
between the pump and any rigid plumbing.
This reduces stresses on the molded
plastic threads of the air exhaust port.
Failure to do so may result in damage to
the air distribution valve body.
Any piping or hose connected
to the pump’s air exhaust port must
be physically supported. Failure to
support these connections could also
result in damage to the air distribution
valve body.
Exhaust Conversion Drawing
CONVERTED EXHAUST ILLUSTRATION
Illustration #1
CONVERTING THE PUMP FOR
PIPING THE EXHAUST AIR
The following steps are necessary
Illustration #2
to convert the pump to pipe the exhaust
air away from the pump.
Use a Phillips screwdriver to
remove the four self-tapping screws
(item 1-H).
Remove the mufer cap and mufer
(items 1-G and 1-F). The 3/8" NPT
molded threads in the air distribution
valve body (item 1-A).
This pump can be tted with a Pulse Output Kit. This converts
the mechanical strokes of the pump to an electrical signal which
interfaces with the Stroke Counter/ Batch Controller or user control
devices such as a PLC.
See the individual kits listed on the Pump Repair Parts List
for further information.
Warren Rupp, Inc., 800 North Main Street, Manseld, Ohio,
certies that Air-Operated Double Diaphragm Pumps Series:
HDB, HDF, M Non-Metallic, S Non-Metallic, M Metallic, RS Metallic,
S Metallic, Containment Duty, Gas, UL, High Pressure, W, Submersible
and Tranquilizers comply with the European Community Directive 98/37/EC,
Safety of Machinery. This product has used EN 809, Pumps and Pump
Units for Liquids - Common Safety Requirements harmonized standard
to verify conformance.
October 20, 2005
Signature of authorized personDate of issue
David Roseberry
Printed name of authorized personTitle
Engineering Manager
CE
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