Graco Mongoose Series Parts list manual

3A4131H
EN
Instructions-Parts
Mongoose
Chemical Metering
Pump
Electric metering pump for injecting chemicals at well sites. For professional use only.
Not approved for use in explosive atmospheres or hazardous locations.
See page 2 for model information, including maximum working
pressures.
Important Safety Instructions
Read all warnings and instructions in this manual.
Save all instructions.

23A4131H
Contents
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . .3
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Flush Before Using Equipment . . . . . . . . . . . . . . 5
Location Requirements . . . . . . . . . . . . . . . . . . . . 5
Plumbing Requirements for Stainless Steel /
Plastic Fluid Sections . . . . . . . . . . . . . . . . . . 5
Component Identification . . . . . . . . . . . . . . . . . . 6
Mounting and Chemical Supply Connection . . . . 7
Typical Installation . . . . . . . . . . . . . . . . . . . . . . . 8
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Pressure Relief Procedure . . . . . . . . . . . . . . . . . 9
Flush the Equipment . . . . . . . . . . . . . . . . . . . . . . 9
Prime the Pump . . . . . . . . . . . . . . . . . . . . . . . . . 9
Adjust Feed Rate . . . . . . . . . . . . . . . . . . . . . . . 10
Adjust Stroke Length . . . . . . . . . . . . . . . . . . . . . 10
Calculate Output . . . . . . . . . . . . . . . . . . . . . . . . 10
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Stainless Steel Fluid End Repairs . . . . . . . . . . . 13
Plastic Fluid End Repairs . . . . . . . . . . . . . . . . . 14
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Mongoose Metering Pump . . . . . . . . . . . . . . . . 17
Kits and Accessories . . . . . . . . . . . . . . . . . . . . . . . 19
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 22
Models and Approvals
Models Voltage
Fluid
Section
Material Flow (GPD) Maximum Working Pressure psi (MPa, bar) Approvals
A21000 120 VAC 316 SST 17 250 (1.72, 17.2)
A21001 120 VAC 316 SST 17 250 (1.72, 17.2)
A21004 230 VAC 316 SST 17 250 (1.72, 17.2)
A21008 120 VAC PVDF 17 250 (1.72, 17.2)
A21009 120 VAC PVDF 15 150 (1.03, 10.3)
A21010 120 VAC PVDF 30 110 (0.76, 7.6)
A21011 120 VAC PVDF 45 75 (0.52, 5.2)
A21012 230 VAC PVDF 17 250 (1.72, 17.2)
A21013 230 VAC PVDF 15 150 (1.03, 10.3)
A21014 230 VAC PVDF 30 110 (0.76, 7.6)
A21015 230 VAC PVDF 45 75 (0.52, 5.2)
A21016 12 VDC 316 SST 10 140 (0.97, 9.7)
3008494
Conforms to UL STD 778
Certified to CSA C22.2 No. 108

Warnings
3A4131H 3
Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclama-
tion point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks. When
these symbols appear in the body of this manual or on warning labels, refer back to these Warnings. Product-specific
hazard symbols and warnings not covered in this section may appear throughout the body of this manual where
applicable.
FIRE AND EXPLOSION HAZARD
When flammable fluids are present in the work area be aware that flammable fumes can ignite or
explode. To help prevent fire and explosion:
• Use equipment only in well ventilated area.
• Eliminate all ignition sources, such as cigarettes and portable electric lamps.
• Ground all equipment in the work area.
• Keep work area free of debris, including rags and spilled or open containers of solvent.
• Do not plug or unplug power cords or turn lights on or off when flammable fumes are present.
• Use only grounded hoses.
•Stopoperationimmediatelyifstaticsparkingoccurs oryou feel ashock.Do not use equipmentuntil
you identify and correct the problem.
• Keep a working fire extinguisher in the work area.
ELECTRIC SHOCK HAZARD
This equipment must be grounded.Improper grounding, setup, or usage of the system can cause elec-
tric shock.
• Turn off and disconnect power cord before servicing equipment.
• Connect to grounded outlet protected by Class A GFCI.
• Use only 3-wire extension cords.
• Ensure ground prongs are intact on power and extension cords.
PRESSURIZED EQUIPMENT HAZARD
Fluid from the equipment, leaks, or ruptured components can splash in the eyes or on skin and cause
serious injury.
• Follow the Pressure Relief Procedure when you stop spraying/dispensing and before cleaning,
checking, or servicing equipment.
• Tighten all fluid connections before operating the equipment.
• Check hoses, tubes, and couplings daily. Replace worn or damaged parts immediately.
TOXIC FLUID OR FUMES HAZARD
Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or
swallowed.
• Read Safety Data Sheet (SDS) to know the specific hazards of the fluids you are using.
• Store hazardous fluid in approved containers, and dispose of it according to applicable guidelines.

Warnings
43A4131H
PERSONAL PROTECTIVE EQUIPMENT
Wear appropriate protective equipment when in the work area to help prevent serious injury, including
eye injury, hearing loss, inhalation of toxic fumes, and burns. Protective equipment includes but is not
limited to:
• Protective eyewear, and hearing protection.
• Respirators, protective clothing, and gloves as recommended by the fluid and solvent manufacturer.
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
• Do not operate the unit when fatigued or under the influence of drugs or alcohol.
• Do not exceed the maximum working pressure or temperature rating of the lowest rated system com-
ponent. See Technical Data in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data in all
equipment manuals. Read fluid and solvent manufacturer’s warnings. For complete information
about your material, request Safety Data Sheet (SDS) from distributor or retailer.
• Turn off all equipment and follow the Pressure Relief Procedure when equipment is not in use.
• Checkequipmentregularly.Repairorreplacewornordamagedparts immediately with genuineman-
ufacturer’s replacement parts only.
• Do not alter or modify equipment. Alterations ormodifications may void agency approvals and create
safety hazards.
• Make sure all equipment is rated and approved for the environment in which you are using it.
• Use equipment only for its intended purpose. Call your distributor for information.
• Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.
• Do not kink or over bend hoses or use hoses to pull equipment.
• Keep children and animals away from work area.
• Comply with all applicable safety regulations.

Installation
3A4131H 5
Installation
Grounding
Pump: grounded through electrical cord.
Fluid lines: use only electrically conductive lines.
Fluid supply container: follow local code.
Flush Before Using Equipment
The equipment was tested with water. To avoid contam-
inating your fluid with water, flush the equipment with a
compatible solvent before using the equipment. See
Flush the Equipment, page 9.
Location Requirements
Select a mounting location convenient to both the chem-
ical supply and a source of power for the pump.
Plumbing Requirements for Stainless Steel / Plastic Fluid Sections
The Mongoose pump uses carefully matched compo-
nents to achieve a predictable metering output. This
predictability can only be maintained if all fitting sizes
remain unaltered.
All connections should be double checked to insure
against leakage. If hazardous chemicals are being
pumped, use shielding around outlet fluid lines. NOTES:
• There is an approximate 2.5 psi capability lost for
every 1 foot of vertical rise of the outlet fluid line to
the injection point.
•Do not attempt to reduce tubing size; this may
reduce performance of unit.
Stainless Steel Fluid Section Models
Inlet and outlet valves are both 1/4 in. NPT fittings.
NOTE: Apply PTFE tape to threads on NPT fittings.
Plastic Fluid Section Models
Inlet and outlet valves use 3/8 in. or 1/4 in. tubing con-
nectors, and 3/8 in. or 1/4 in. tubing. See FIG. 1.
NOTE: The prime/bleed valve on the plastic fluid section
includes a 1/16 in. clear poly tubing. This tubing is to be
used only with the prime/bleed valve and is not intended
for pressurized use. Do not use with the inlet and outlet
valves.
Tighten connectors no more than a 1/4 turn after the
connection feels snug. Hand tighten only. Do not over-
tighten.
NOTE: Do not apply PTFE tape to threads.
NOTICE
It is recommended that adequate surge protection be used
in order to protect products from voltage changes in your
application.
The equipment must be grounded to reduce the risk
of static sparking and electric shock. Electric or static
sparking can cause fumes to ignite or explode.
Improper grounding can cause electric shock.
Grounding provides an escape wire for the electric
current.
• Never remove ground wire from plug. Connect to
grounded outlet protected by Class A GFCI.
NOTICE
In order to prevent over pumping at low back pressure (less
than 50 PSI) install an inline check valve on the outlet line.
NOTICE
Do not install the pump in a location where the ambient
temperature exceeds 120oF (50o C). Higher temperatures
will affect the output as well as the useful life of the pump.
FIG. 1: Tubing Connections
3/8 in.
1/4 in.
Tubing must slip over nipple
End of the tubing
1/4 in. tubing adapter

Installation
63A4131H
Component Identification
Components Supplied by Graco
The following components are supplied by Graco:
Components Supplied by Customer
The following components are required to be supplied by the
customer:
FIG. 2: Component Identification
1
B
A
C
4
C
D
3
2
9
11
B
A
1
102
103
109
104
E
D
11
2
E
1
B
A
C
9
4
3
Stainless Steel Fluid End
Plastic Fluid End
(Models A21000, A21001, A21004, A21016)
(Models A21008, A21009, A21010,
A21011, A21012, A21013, A21014,
A21015)
Standard Configuration Alternate Configuration
Clear
tubing
White
tubing
White
tubing
1Motor Assembly
2Inlet Valve (stainless steel fluid end)
3Outlet Valve (stainless steel fluid end)
4Prime/Bleed Valve (stainless steel fluid end; not available
on A21001)
9Stainless Steel Fluid End
11 Elbow Fitting (stainless steel only; not supplied with
A21001)
102 Inlet Valve Assembly (plastic fluid end, includes white tub-
ing)
103 Outlet Valve Assembly (plastic fluid end, includes white tub-
ing)
104 Prime/Bleed Valve Assembly (plastic fluid end, includes
clear poly tubing)
109 Plastic Fluid End
AControl Panel
BPower Cord
CShutoff Valve (inlet/outlet, stainless steel fluid end)
DInlet Fluid Line (stainless steel fluid end)
EOutlet Fluid Line (stainless steel fluid end)

Installation
3A4131H 7
Mounting and Chemical Supply
Connection
Flooded Suction Mounting
The fluid end (9) of the pump, shown in FIG. 2, is set up
to accommodate mounting of the pump next to the
chemical supply container (G), shown in FIG. 4.
NOTE: The inlet valve (2 or 102) must be kept in a verti-
cal position for proper operation. The fluid end (9 or 109)
can be removed and rotated 90° if needed.
Suction Lift Mounting (Plastic Fluid Section
only)
The pump is mounted on top of a chemical supply con-
tainer, shown in FIG. 4, so that the distance from the
pump to the bottom of the container does not exceed
5 ft.
A weight is provided to hold the inlet fluid line (D) and
foot valve (H) in a vertical position at the bottom of the
container. Keep the inlet fluid line (D) relatively short,
and avoid high spots or bends.
NOTE: Do no allow the foot valve (H) to lie horizontally
in the tank. This defeats the action of the valve and
causes the pump to lose prime.
Injection Check Valve Connection (Plastic
Fluid Section only)
The injection check valve is designed to prevent a back
flow and to inject chemical into a piping system. This
valve must be mounted within 45° of vertical (see FIG.
3).
1. Install the 1/2 in. NPT end into the piping system.
Apply PTFE tape to this end only.
2. Connect the outlet fluid line (E) from the Mongoose
pump to the to the other end of the injection check
valve.
Three-Function Valve Injection Assembly
(Plastic Fluid Section only; Optional)
The optional three-function valve injection assembly
provides three functions in one injection valve assembly.
•Anti-siphon - which allows metering of liquids into
the inlet side of a circulating pump. It provides pro-
tection against an accidental application of suction
pressure at the fluid injection point. A PTFE coated
diaphragm provides a positive anti-siphon action.
•Back pressure - which permits metering into atmo-
spheric discharge (such as an open container) with-
out overpumping.
•Line check - which permits removal of outlet tubing
without release of system fluid.
Failure of the diaphragm or a rupture in the fluid lines
may cause exposure to toxic fumes or a loss of solu-
tion in the tank. Install a fluid line shutoff valve as
close to the chemical tank as possible to minimize the
loss of, and exposure to, potentially toxic chemicals.
FIG. 3: Injection Valve Connection
E
Use PTFE tape on
these threads only
Pipe Cross
Section
Injection
Check Valve
Do not use
PTFE tape here

Installation
83A4131H
Typical Installation
FIG. 4 shows two examples of an installation with a Mongoose chemical metering pump. Your installation may differ
from what is shown here. The Mongoose pump (F) and the attached power cord (B) are the only components in FIG.
4 supplied by Graco. All other components are supplied by customer.
Key:
B Power Cord
C Shutoff Valve (Inlet/Outlet)
D Inlet Fluid Line
E Outlet Fluid Line
F Mongoose Pump
G Chemical Supply Container
HFootValve
FIG. 4: Typical Installation
C
E
B
F
C
D
G
C
Flooded Suction Installation Suction Lift Installation
G
H
D
EF
No more than
5 ft. from pump
to bottom of
container

Operation
3A4131H 9
Operation
Pressure Relief Procedure
Follow the Pressure Relief Procedure whenever
you see this symbol.
NOTE: Always discharge fluid into an approved con-
tainer or location.
1. Turn SPEED knob (H) to off and disconnect power
cord (B).
2. Shut off the inlet and outlet lines using shutoff
valves (C).
3. Slowly crack the fitting connected to the outlet check
valve to relieve downstream fluid pressure.
Flush the Equipment
• Flush with a fluid that is compatible with the fluid
being dispensed and the equipment wetted parts.
1. Follow the Pressure Relief Procedure.
2. Connect inlet fluid line (D) to the supply source of
the flushing fluid.
3. Connect outlet fluid line (E) to a waste container.
4. Run the pump until the dispensed fluid is predomi-
nately flushing fluid.
5. Follow the Pressure Relief Procedure.
Prime the Pump
1. Connect power (B) to the pump.
2. Set the STROKE % knob (J) to 100%. (See FIG. 5
on page 10.)
3. Set the SPEED knob (H) to maximum cycles per
second.
While pump is operating, if fluid begins moving, no fur-
ther priming is required.
If fluid is not moving, open prime/bleed valve (4 or 104)
approximately one turn until fluid begins to move. When
the inlet fluid line (D) fills, close prime/bleed valve (4 or
104).
This equipment stays pressurized until pressure is
manually relieved. To help prevent serious injury from
pressurized fluid, such as splashing fluid, follow the
Pressure Relief Procedure when you stop dispens-
ing and before cleaning, checking, or servicing the
equipment.
To avoid fire andexplosion, always ground equipment
and waste container. To avoid static sparking and
injury from splashing, always flush at the lowest pos-
sible pressure.
NOTICE
Do not overtighten prime/bleed valve. Damage may occur.

Operation
10 3A4131H
Adjust Feed Rate
The Mongoose pump allows for the exact setting of the
pump’s SPEED knob (H) on the pump’s control panel.
See FIG. 5.
NOTE: Standard cycles per minute settings available
are: 1, 2, 3, 4, 5, 6, 7, 8, 10, and increase by 5 thereafter
up to the maximum of 125.
Adjust Stroke Length
The stroke length can be adjusted on the Mongoose
pump. This is a mechanical adjustment made using
STROKE % knob (J) on the control panel.
Calculate Output
A pump’s output per minute can be determined by divid-
ing the maximum rated gallons per day by 1440 (min-
utes per day).
For example, a 30 gallons per day (gpd) pump at a max-
imum stroke length and speed setting of 125 cycles per
minute (cpm) will pump 0.000167 gallons per stroke
(gps).
30 gpd ÷ 1440 min/day = 0.0208 gpm ÷ 125 spm =
0.000167 gal/stroke
With this value and the pump’s speed setting (cycles per
minute) you can calculate your pump’s output at it’s
rated pressure.
A 30 gpd pump set at 50 cycles per minute:
50 cpm x .000167 gps x 1440 min/day = 12.02 gpd
Reducing the stroke length will reduce the pump’s out-
put again. If the example pump above had it’s stroke
length reduced to 50% the 12.02 gallons per day output
is reduced to 6.01. (Example: 12.02 gpd x 0.50 = 6.01
gpd).
A higher product viscosity will reduce the output. Pres-
sures lower than the pump’s rating can increase the out-
put.
FIG. 5: Mongoose Control Panel
J
H
NOTICE
To avoid damage to the pump, this adjustment
should only be made while the pump is running at a
high-stroking rate.

Troubleshooting
3A4131H 11
Troubleshooting
1. Follow Pressure Relief Procedure, page 9, before
checking pump.
Problem Cause Solution
Pump does not achieve or maintain
prime Air trapped in inlet line Straighten inlet line to eliminate high spots.
Worn or contaminated check valves Inspect check valves in fluid end for
cleanliness.
Excessive lift Verify the appropriate lift for the liquid
being pumped. Maximum suction lift
is 5 ft. with water or liquids of similar
specific gravity; though less with
heavier liquids, such as acids. Mount
the pump in a lower position relative
to the chemical container.
Suction fittings not properly tightened Check fittings. Overtightening may
cause restriction. Conversely, if any
leakage occurs, the pump will suck
air and fail to prime.
Split or pinch in inlet tube Inspect inlet tube through its full
length to assure there are no splits at
the connections or other restrictions.
Move objects or equipment which
impinges upon the inlet tube, or
reroute as required to assure a
smooth transition from foot valve to
pump.
Low chemical level Check fluid level in chemical supply
tank.
Insufficient fluid Stroke adjustment set too low Check operation of STROKE %
knob. If pump delivers too low adjust-
ablerate,checksettings. Readjust as
required.
Worn or contaminated check valves Inspect, clean, or replace as neces-
sary.
Obstruction in inlet line Check inlet line for obstructions, clog-
ging, kinks, or pinch points.
Clogged foot valve screen Clean or replace foot valve screen.
Output (system) pressure too high Relocate the injector to a lower pres-
sure part of the system.
Diaphragm worn or torn Replace diaphragm.
Blown fuse Replace fuse with like kind.

Troubleshooting
12 3A4131H
Excessive fluid Excessive stroke rate Lower the stroke rate if adjustable on
your pump.
Improper stroke length Reduce stroke length.
Pump will not pump System pressure too high Check system pressure to assure
that it is within system-rated parame-
ters of the pressure.
Diaphragm improperly installed Ensure the diaphragm is screwed
fully onto shaft.
Check valves worn or clogged Clean or replace as required.
Pump will not run Pump not turned on or plugged in Check outlet with meter to assure
that correct voltage is present, and
that power supply cord is in good
condition and plugged in.
Blown fuse Replace fuse with like kind.
Excessive noise Pump not primed Prime pump.
Problem Cause Solution

Repair
3A4131H 13
Repair
Stainless Steel Fluid End
Repairs
NOTE: The following procedures apply only to models
with stainless steel fluid ends (A21000, A21001,
A21004, and A21016).
Replacing the Diaphragm
1. Follow the Pressure Relief Procedure, page 9.
2. Flush the Equipment, page 9.
3. Disconnect the power (B).
4. Drain the fluid from the outlet fluid line (E).
5. Disconnect the outlet fluid line (E).
6. Remove the four fluid end screws (10) from the fluid
end (9).
7. Remove the fluid end from the motor assembly (1).
8. Unscrew the diaphragm (7) counterclockwise from
the pump shaft.
9. Inspect the pump shaft and support ring (8) for dam-
age.
10. Screw the new diaphragm (7) clockwise onto the
pump shaft.
11. Replace the fluid end (9) and the four screws (10).
Tighten the screws evenly.
12. Reconnect the outlet fluid line (E).
13. Reconnect power (B).
14. Prime the Pump, page 9.
NOTE: Tighten fluid end screws (10) after the pump’s
initial week of operation.
Replacing the Inlet Valve
1. Follow the Pressure Relief Procedure, page 9.
2. Flush the Equipment, page 9.
3. Disconnect the power (B).
4. Close the inlet shutoff valve (C).
5. Disconnect the shutoff valve (C) from the inlet
valve (2); or elbow fitting (11), if attached.
6. Remove the elbow fitting (11), if attached. Inspect
and replace, if necessary.
7. Remove the inlet valve (2) from the fluid end (9).
Inspect the inlet valve and replace, if necessary.
8. Apply PFTE tape on the threads of the inlet
valve (2).
9. Reattach the inlet valve (2) to the fluid end (9).
NOTE: The inlet valve (2) has flow arrow that must point
towards the fluid end (9).
10. Reattach the elbow fitting (11), if used, to the inlet
valve (2).
11. Reconnect the shutoff valve (C).
12. Reconnect the power (B).
13. Prime the Pump, page 9.

Repair
14 3A4131H
Replacing the Outlet Valve
1. Follow the Pressure Relief Procedure, page 9.
2. Flush the Equipment, page 9.
3. Disconnect the power (B).
4. Close the inlet shutoff valve (C).
5. Disconnect the shutoff valve (C) from the outlet
valve (3).
6. Remove the outlet valve (3) from the fluid end (9).
Inspect and replace, if necessary.
7. Apply PTFE tape on the threads of the outlet
valve (3).
8. Reattach the inlet valve (3) to the fluid end (9).
NOTE: The outlet valve (3) has flow arrow that must
point away from the fluid end (9).
9. Reconnect the shutoff valve (C).
10. Reconnect the power (B).
11. Prime the Pump, page 9.
Replacing the Prime/Bleed Valve
1. Follow the Pressure Relief Procedure, page 9.
2. Flush the Equipment, page 9.
3. Disconnect the power (B).
4. Close the inlet shutoff valve (C).
5. Remove the prime/bleed valve (4) from the fluid end
(9). Inspect and replace, if necessary.
6. Apply PTFE tape on the threads of the prime/bleed
valve (4).
7. Reattach the prime/bleed valve (4) to the fluid
end (9).
8. Reconnect the power (B).
9. Prime the Pump, page 9.
Plastic Fluid End Repairs
NOTE: The following procedures apply only to models
with plastic fluid ends (A21008, A21009, A21010,
A21011, A21012, A21013, A21014, A21015).
Replacing the Diaphragm
1. Follow the Pressure Relief Procedure, page 9.
2. Flush the Equipment, page 9.
3. Disconnect the power (B).
4. Drain the fluid from the outlet fluid line (E).
5. Disconnect the outlet fluid line (E).
6. Remove the four fluid end screws (110) from the
fluid end (109).
7. Remove the fluid end (109) from the motor assem-
bly (1).
8. Unscrew the diaphragm (7) counterclockwise from
the pump shaft.
9. Inspect the pump shaft and support ring (8) for dam-
age.
10. Screw the new diaphragm (7) clockwise onto the
pump shaft.
11. Replace the fluid end (109) and the four screws
(110). Tighten the screws evenly.
12. Reconnect the outlet fluid line (E).
13. Reconnect power (B).
14. Prime the Pump, page 9.
NOTE: Tighten fluid end screws (110) after the pump’s
initial week of operation.

Repair
3A4131H 15
Replacing the Inlet Valve
1. Follow the Pressure Relief Procedure, page 9.
2. Flush the Equipment, page 9.
3. Disconnect the power (B).
4. Remove the inlet valve (102) from the from the fluid
end (109).
5. Remove the o-ring from the inlet port of the fluid
end (109).
6. Reattach the inlet valve (102) to the fluid end (109).
7. Reconnect the power (B).
8. Prime the Pump, page 9.
Replacing the Outlet Valve
1. Follow the Pressure Relief Procedure, page 9.
2. Flush the Equipment, page 9.
3. Disconnect the power (B).
4. Remove the outlet valve (103) from the from the
fluid end (109).
5. Remove the o-ring from the outlet port of the fluid
end (109).
6. Reattach the outlet valve (103) to the fluid
end (109).
7. Reconnect the power (B).
8. Prime the Pump, page 9.
Replacing the Valve Ball Check Cartridge
The following procedure is the same for all plastic valve
assemblies: inlet (102), outlet (103), foot (111), injection
(112), and three-function (113). See the Model A21008
(Plastic Fluid End) shown parts diagram on page 18.
Follow the Pressure Relief Procedure, page 9. is
explained on page 15.
The part of the valve that holds the ball check cartridge
is interchangeable among each of the valve assemblies.
The ball check cartridge is in the end away from any
connected tubing. See FIG. 6.
1. Follow the Pressure Relief Procedure, page 9.
2. Flush the Equipment, page 9.
3. Disconnect the power (B).
4. Disconnect the valve at the end away from the tub-
ing. Verify that the ball check o-ring is still attached
to, or came out with, the ball check cartridge (114).
5. Use a hooked tool to pull out the ball check
cartridge (114). Verify that the second o-ring is not
left in the valve.
6. Discard the ball check cartridge (114) and o-rings.
7. Attach new o-rings to both ends of the new ball
check cartridge (114).
FIG. 6: Location of Valve Ball Check Cartridge
Ball check cartridge in this end of valve
3/8 in.
1/4 in.

Repair
16 3A4131H
8. Insert the ball check cartridge (114), with o-rings,
into the end of the valve.
9. Reconnect the valve.
10. Repeat steps 4-9 for each valve ball check cartridge
(114) being replace.
11. Reconnect the power (B).
12. Prime the Pump, page 9.
Replacing the Fluid End Ball Check
Cartridges
The following procedure applies only to the two ball
check cartridges (114 and 115) in the plastic fluid end
(109). Replacing the Valve Ball Check Cartridge is
explained on page 15.
1. Follow the Pressure Relief Procedure, page 9.
2. Flush the Equipment, page 9.
3. Disconnect the power (B).
4. Disconnect both the inlet valve (102) and the outlet
valve (103) at the end away from their respective
tubing.
5. Use a hooked tool to pull the ball check cartridges
(114 and 115) from the inlet and outlet ports,
respectively, of the fluid end (109). Verify that both
o-rings on both cartridges are removed.
6. Discard the ball check cartridges (114 and 115) and
o-rings.
7. Attach new o-rings to both ends of each new ball
check cartridge (114 and 115).
8. Insert the ball check cartridge (114), with o-rings,
into the inlet port of the fluid end (109).
9. Reconnect the inlet valve (102) to the inlet port on
the fluid end (109).
10. Align the priming hole on the side of the ball check
cartridge (115) with the prime/bleed valve (104)
before inserting the cartridge (115) into the outlet
port of the fluid end (109).
11. Reconnect the outlet valve (103) to the outlet port
on the fluid end (109).
12. Reconnect the power (B).
13. Prime the Pump, page 9.
Replacing the Prime/Bleed Valve
1. Follow the Pressure Relief Procedure, page 9.
2. Flush the Equipment, page 9.
3. Disconnect the power (B).
4. Remove the prime/bleed valve (104) from the fluid
end (9). Inspect and replace, if necessary.
5. Reattach the prime/bleed valve (104) to the fluid
end (109).
6. Reconnect the power (B).
7. Prime the Pump, page 9.
NOTICE
To ensure the proper function of the pump and to
avoid potential damage, consider the direction of flow
before inserting the ball check cartridge (114) into the
valve. The cartridge has a hole on each end, with one
being larger than the other. The cartridge needs to be
oriented so that the flow goes in the larger hole and
out the smaller.
NOTICE
To ensure the proper function of the pump and to
avoid potential damage, consider the direction of flow
before inserting each ball check cartridge (114 and
115) into the fluid end ports. Each cartridge has a
hole on each end, with one being larger than the
other. The cartridges need to be oriented so that the
flow goes in the larger holes and out the smaller.

Parts
3A4131H 17
Parts
Mongoose Metering Pump
Model A21000 (Stainless Steel Fluid End) shown
Mongoose Metering Pump Parts List (Stainless Steel Fluid End)
Replacement Warning label is available at no cost.
†Not available with A21001.
‡Not provided with A21001.
2
1
3
4†
7
58
9
10
1
1
Apply PTFE tape to threads
1
11‡
6
(opposite ref. 5)
Ref. Part Description Qty
1 -- Motor assembly 1
2 B32279 Inlet check valve 1
3 B32280 Outlet check valve 1
4† B32191 Prime/bleed valve 1
5 -- Branding label 1
617M292 Warning label 1
7 B32281 Diaphragm; 75, 110 psi 1
B32282 Diaphragm; 150, 250 psi 1
8 -- Support ring 1
9 -- Fluid end 1
10 -- Fluid end screws 4
11‡ 17M529 Elbow fitting 1

Parts
18 3A4131H
Model A21008 (Plastic Fluid End) shown
1
103*
104*
7*
58
109*
110*
1
6
(opposite ref. 5)
102*
112
114
115
114
114 111
Apply PTFE tape only to
threads on the end of the injection
valve assembly.
1
Weight
Priming Hole

Kits and Accessories
3A4131H 19
Mongoose Metering Pump Parts List
(Plastic Fluid End)
Replacement Warning label is available at no cost.
* Included in Pump Kits B32283, B32284, and
B32285.
† Included in Ball Check Kit B32297.
Kits and Accessories
* Includes 7, 102, 103, 104, 109, and 110.
† Includes 114 and 115.
Ref. Part Description Qty
1 -- Motor assembly 1
5 -- Branding label 1
617M292 Warning label 1
7* B32281 Diaphragm; 75, 110 psi 1
B32282 Diaphragm; 150, 250 psi 1
8 -- Support ring 1
102* B32290 Inlet check valve assembly, 3/8
in. (includes tubing) 1
B32291 Inlet check valve assembly, 1/4
in. (includes tubing) 1
103* B32292 Outlet check valve assembly,
3/8 in. (includes tubing) 1
B32293 Outlet check valve assembly,
1/4 in. (includes tubing) 1
104* B32296 Prime/bleed valve assembly
(includes clear poly tubing) 1
109* -- Fluid end 1
110* -- Fluid end screws 4
111 B32288 Foot valve assembly, 3/8 in. 1
B32289 Foot valve assembly, 1/4 in. 1
112 B32286 Injection valve assembly, 3/8 in. 1
B32287 Injection valve assembly, 1/4 in. 1
113 B32294 Three-function valve assembly,
3/8 in. (not shown) 1
B32295 Three-function valve assembly,
1/4 in. (not shown) 1
114†B32298 Ball check cartridge assembly 5
115†B32299 Ball check cartridge assembly,
with priming hole 1
Part No. Description
B32283* Pump Kit, 110 psi, 3/8 in. tubing
B32284* Pump Kit, 150 psi, 3/8 in. tubing
B32285* Pump Kit, 250 psi, 1/4 in. tubing
B32297†Ball Check Kit (six ball check cartridge
assemblies)

Dimensions
20 3A4131H
Dimensions
FIG. 7: Mongoose Pump Dimensions
ABCD
10.6 in.
(26.9 cm) 7.5 in. (19.0 cm) 5.0 in. (12.7 cm) 4.13 in (10.5 cm)