Instructions and Parts
™
SaniForce
Sanitary Drum
3A4586E
Pumps
For use in sanitary applications to transfer medium to high viscosity fluids. Not approved
for use in explosive atmospheres or hazardous locations. For professional use only.
See page 3 for model information, including maximum fluid working pressure.
Important Safety Instructions
Careless pump operation can result in
serious injury. Read all warnings and
instructions in this manual. Save these
instructions.
EN
Model 25C420 Shown
Contents
Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Electrical Connections (17N668 Motor) . . . . . . . . 7
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Pre-Start Checklist . . . . . . . . . . . . . . . . . . . . . . . 9
Flush Before First Use . . . . . . . . . . . . . . . . . . . . 9
Tighten Connections . . . . . . . . . . . . . . . . . . . . . . 9
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Initial Configuration (17N668 motor with Graco
VFD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Graco VFD Operation (17N668 motor) . . . . . . . 11
Pump Shutdown . . . . . . . . . . . . . . . . . . . . . . . . 12
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Flushing Procedure . . . . . . . . . . . . . . . . . . . . . . 14
Cleaning Procedure . . . . . . . . . . . . . . . . . . . . . 14
Models 25C411 - 25C414 . . . . . . . . . . . . . . . . . 15
Models 25C416 - 25C419, 25C776 - 25C779 . . 17
Models 25C420, 25C421, 25C422, 25C780,
25C781, 25C782 . . . . . . . . . . . . . . . . . . . . 19
17N666 and 17N667 Motor Maintenance . . . . . 21
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Complete Pump Models 25C411, 25C412, 25C413,
and 25C414 . . . . . . . . . . . . . . . . . . . . . . . . 24
Complete Pump Models 25C420, 25C421, 25C780,
25C781 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Complete Pump Models 25C416 - 25C419,
25C776 - 25C779 . . . . . . . . . . . . . . . . . . . . 28
Complete Pump Model 25C422, 25C782 . . . . .30
Performance Charts . . . . . . . . . . . . . . . . . . . . . . . . 32
Models 25C411 - 25C419, 25C776 - 25C779 . . 32
Models 25C420 - 25C421, 25C780 - 25C781 . . 33
Model 25C422, 25C782 . . . . . . . . . . . . . . . . . . . 34
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Models 25C411, 25C412, 25C416, 25C417,
25C776, 25C777 . . . . . . . . . . . . . . . . . . . . . 35
Models 25C413, 25C414, 25C418, 25C419,
25C778, 25C779 . . . . . . . . . . . . . . . . . . . . . 35
Models 25C420, 25C421, 25C780, 25C781 . . . 36
Models 25C422, 25C782 . . . . . . . . . . . . . . . . . .36
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
2 3A4586E
Models
Models
System
Model
25C411 17N666 115 VAC, variable speed † 17N669 39 inches See ETL label
25C413 17N666 115 VAC, variable speed † 17N670 47 inches
25C412 17N667 230 VAC, Euro plug, variable speed ‡ 17N669 39 inches
25C414 17N667 230 VAC, Euro plug, variable speed ‡ 17N670 47 inches
25C416 17N666 115 VAC, variable speed † 17N671 39 inches
25C417 17N667 230 VAC, Euro plug, variable speed ‡ 17N671 39 inches
25C418 17N666 115 VAC, variable speed † 17N672 47 inches
25C419 17N667 230 VAC, Euro plug, variable speed ‡ 17N672 47 inches
25C776 17N666 115 VAC, variable speed † 17S148 39 inches
25C777 17N667 230 VAC, Euro plug, variable speed ‡ 17S148 39 inches
25C778 17N666 115 VAC, variable speed † 17S149 47 inches
25C779 17N667 230 VAC, Euro plug, variable speed ‡ 17S149 47 inches
25C780 17N666 115 VAC, variable speed † 17S150 39 inches bag-liner
25C420 17N666 115 VAC, variable speed † 17N673 39 inches
25C781 17N667 230 VAC, Euro plug, variable speed ‡ 17S150 39 inches bag-liner
25C421 17N667 230 VAC, Euro plug, variable speed ‡ 17N673 39 inches
25C422* 17N668 190/380 or 230/460 VAC, 3 phase, water
washdown
25C782* 17N668 190/380 or 230/460 VAC, 3 phase, water
washdown
* Pump hanger 17P662 included.
† Wired with a North American “Type B” 3-pin plug.
‡ Wired with a European “Type F” 2-pin plug.
Motor Lower Unit
Impeller
High Volume See ETL label
High Pressure
Progressive Cavity ◆
foot
foot
17N674 39 inches UL recognized
17S153 39 inches bag-liner
foot
◆ Pump elevator 24V310 or 24V311 can be used
with these pumps. Pump mounting bracket 24V303
may work for mounting on customer-owned elevators. These are ordered separately.
Motor
ApprovalsModel Type Model Length Notes
See ETL label
component
ETL Label
3A4586E 3
Type B
Type F
Warnings
Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclamation 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, 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.
WARNING
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 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.
MOVING PARTS HAZARD
Moving parts can pinch, cut or amputate fingers and other body parts.
• Keep clear of moving parts.
• Do not operate equipment with protective guards or covers removed.
• Pressurized equipment can start without warning. Before checking, moving, or servicing equipment,
follow the Pressure Relief Procedure and disconnect all power sources.
FIRE AND EXPLOSION HAZARD
Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help prevent
fire and explosion:
• Use equipment only in well ventilated area.
• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and plastic drop
cloths (potential static arc).
• Keep work area free of debris, including solvent, rags and gasoline.
• Do not plug or unplug power cords, or turn power or light switches on or off when flammable fumes
are present.
• Ground all equipment in the work area. See Grounding instructions.
• Use only grounded hoses.
• Hold gun firmly to side of grounded pail when triggering into pail.
• If there is static sparking or you feel a shock, stop operation immediately. Do not use equipment
until you identify and correct the problem.
• Keep a working fire extinguisher in the work area.
4 3A4586E
Warnings
WARNING
ELECTRIC SHOCK HAZARD
This equipment must be grounded. Improper grounding, setup, or usage of the system can cause electric shock.
• Turn off and disconnect power cord before servicing equipment.
• Connect only to grounded electrical outlets.
• Use only 3-wire extension cords.
• Ensure ground prongs are intact on power and extension cords.
• Do not expose to rain. Store indoors.
• Do not submerge the motor in liquid.
• Never carry the motor by the power cord.
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 component. 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 SDS from distributor or retailer.
• Do not leave the work area while equipment is energized or under pressure.
• Turn off all equipment and follow the Pressure Relief Procedure when equipment is not in use.
• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine manufacturer’s replacement parts only.
• Do not alter or modify equipment.
• 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.
BURN HAZARD
Equipment surfaces and fluid that is heated can become very hot during operation. To avoid sever
burns:
• Do not touch hot fluid or equipment.
PERSONAL PROTECTIVE EQUIPMENT
You must wear appropriate protective equipment when operating, servicing, or when in the operating
area of the equipment to help protect you from serious injury, including eye injury, hearing loss, inhalation of toxic fumes, and burns. This 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.
3A4586E 5
Installation
Installation
Grounding
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.
Grounding is an electrical connection between a metal
vessel, pump, or motor and a true earth ground.
Motor: Electrical cords must be connected to outlets
with electrical ground.
Pump: Ensure that the ground screw provided with the
pump is connected to a true earth ground. Insert one
end of a 14 AWG minimum ground wire behind the
ground screw and tighten the screw securely. Connect
the clamp end of the grounding wire to a true earth
ground. A ground wire and clamp, Part 238909, is available from your Graco distributor.
Fluid hoses: use only electrically conductive hoses with
a maximum of 500 ft. (150 m) combined hose length to
ensure grounding continuity. Check electrical resistance
of hoses. If total resistance to ground exceeds 25 megohms, replace hose immediately.
Mounting
To avoid injury from a falling pump, model 25C422 or
25C782, check the connections on the motor hanger
(302) before using the motor hanger to lift the pump.
1. Remove the pump and motor from packaging.
2. Inspect all contents for damage.
3. Install the motor with pump lower:
a. On pumps using the 17N668 motor, hang the
pump using the included motor hanger (302)
using adequate hardware, following local code.
Torque the motor hanger to 30-36 ft-lb (41-49
N-m).
b. On pumps using the 17N666 or 17N667 motor,
attach motor to pump by tightening the motor
nut on the pump.
NOTICE
To avoid damaging the pump, do not overtighten the
mounting hardware.
Material supply container: follow local code.
Container(s) that receive material: follow local code.
To maintain grounding continuity when flushing or
relieving pressure: hold metal part of the dispense
valve firmly to the side of a grounded metal pail, then
trigger the valve.
6 3A4586E
Electrical Connections (17N668 Motor)
Installation
Wire Connections at the Motor
To avoid injury from fire, explosion, or electric shock,
all electrical wiring must be done by a qualified electrician and comply with all local codes and regulations.
NOTE: Graco recommends the use of a motor soft
starter or a VFD in the electrical circuit for all installations. In all cases, make sure all products are installed in
accordance with local codes and regulations.
1. Remove 4 bolts to open the motor’s electrical box.
2. Internal Wiring:
a. For 460V Motors: The motor typically comes
wired for 460 V. If this is the voltage you want,
the existing wiring can remain as it is.
47 58 69
W2 U2 V2
U1 V1 W1
231
b. For 230V Motors: Move the 7, 8, and 9 wires
as shown. Bridge W2, U2, and V2 as shown.
564
3. Install wiring system with proper liquid-tight connections in one of the ports at the bottom of the motor
box.
4. Connect the ground wire to the ground screw.
Torque the M5 stud to 17.7 in-lb (2.0 N-m).
5. Connect power wires L1, L2 and L3 to line terminals
U1, V1, and W1.
6. Torque terminals to 14.2 in-lb (1.6 N-m). Do not
overtorque.
7. Close the motor electrical box. Torque the screws to
20 in-lb (2.3 N-m).
Wire Connections at the Variable
Frequency Drive (VFD)
To avoid injury from fire, explosion, or electric shock, all
electrical wiring must be done by a qualified electrician
and comply with all local codes and regulations.
• Disconnect power before servicing.
• Wait 5 minutes for capacitor discharge before
opening.
NOTE: For variable speed control, the motor must be
wired to a VFD. Follow the instruction in the VFD manufacturer’s manual.
If you purchased an optional Graco VFD, install wiring at
the VFD as follows:
1. Connect the wires to the motor. See Wire Connec-
tions at the Motor.
W2 U2 V2
U1 V1 W1
17 28 39
3A4586E 7
2. Open the VFD’s electrical box.
3. Install the wiring system with proper liquid-tight connections for incoming supply power and for outgoing
motor power.
4. Connect the ground wires for the VFD and for the
motor to the ground screw.
5. Connect the wires from the motor terminals to the
matching terminals in the VFD box, as shown.
Installation
6. Connect the power supply wires to the power terminals in the VFD box. See the following table and figures, as applicable to your system.
U/T1 V/T2 W/T3 PE
PES
7. Close the VFD electrical box.
8. Perform the VFD configuration.
VFD
Part No. HP Nominal Input Voltage
Input Voltage
Range
PES
PES
PES
PES
PE
Nominal Output
Voltage† See Figure
16K909 1.5 120 Vac, 1 phase 90-132 Vac 240 Vac, 3 phase FIG. 1
16K909 1.5 240 Vac, 1 phase 170-264 Vac 240 Vac, 3 phase FIG. 2
16K910 1.5 208-240 Vac, 1 phase 170-264 Vac 208-240 Vac, 3 phase FIG. 3
16K910 1.5 208-240 Vac, 3 phase 170-264 Vac 208-240 Vac, 3 phase FIG. 4
† Output voltage is dependent on input voltage.
PE L1 L2 N
PE L1 L2 L3
PE
PE L1 N
FIG. 1 120 Vac 1 Phase Input/240 Vac 3 Phase Output
FIG. 3 208-240 Vac 1 Phase Input/208-240 Vac 3
PE L1 N
Phase Output
PE L1 L2 N
PE L1 L2
FIG. 2 240 Vac 1 Phase Input/240 Vac 3 Phase Output
FIG. 4 190, 208-240 Vac 3 Phase Input/190, 208-240
PE L1 L2 L3
PE L1 L2 L3
Vac 3 Phase Output
8 3A4586E
Setup
Setup
Accessories are available from Graco. Make certain all
accessories are sized and pressure-rated to meet your
system requirements.
• Verify that the motor voltage corresponds to proper
electrical supply. Before plugging motor into power
supply, make sure the motor switch is in the OFF
position.
• Before operation, confirm all pump connections are
properly tightened.
• Before starting the pump, confirm the discharge
hose is securely fastened to the receiving vessel in
order to prevent splashing.
Pre-Start Checklist
Verify each of the following items before starting the
pump.
• DEBRIS: Ensure that the fluid supply is free of dirt,
debris, and any contaminants.
Flush Before First Use
The sanitary pump was assembled using sanitary lubricant on moving parts and was tested in water. Flush the
pump thoroughly with an appropriate cleaning solution,
and disassemble and sanitize the parts before using the
pump. See Flushing Procedure, page 14. Check
national, state, and local codes for specific limitations.
Tighten Connections
Before each use, check all hoses for wear or damage.
Replace as necessary. Check that all connections are
tight and leak-free.
• HOSE MATERIAL: Check that the hose material is
compatible with the fluid being pumped. Consult
your Graco distributor for available hose materials.
• FASTENERS: Check that all fasteners are properly
tightened.
• LEAKS: Check the connections on the fluid outlet to
be sure there are no leaks.
3A4586E 9
Operation
Operation
use a hose that is rated 4x the pump discharge
pressure.
• Moving parts can pinch, cut or amputate fingers
and other body parts. Keep your hands and fingers
away from the mechanical seal viewing window on
models 25C422 or 25C782 during operation and
whenever the pump is connected to a power
source. Disconnect power before moving.
• Do not use these pumps for the transfer of
flammable or combustible products or in an
environment where flammable or combustible
fumes are present.
• Do not clean or flush the pump with flammable or
combustible fluids.
• Progressive cavity pumps are positive displacement pumps and should never be operated
against shut-off elements such as nozzles, valves,
etc. Failure to comply may result in excessive
pressure build resulting in serious injury and pump
damage.
NOTICE
• Never allow the pump to run dry of fluid. A dry
pump will possibly damage itself.
b. Fasten the hose to the hose barb with a suitable
hose clamp that exceeds the pump discharge
pressure. A hose barb fitting kit, part 25C502, is
available from your Graco distributor.
5. Variable speed pumps should be started at approximately half speed according to the dial settings.
Turn the motor to the ON position. Throttle flow to
desired output pressure by varying the potentiometer (motors 17N666 and 17N667) or VFD frequency,
if applicable on motor 17N668.
6. After use, flush and clean the pump. Then store the
pump vertically.
• Progressive cavity pumps 25C420, 25C421,
25C780, and 25C781 are recommended for intermittent duty use only to prevent premature motor
wear. (i.e., 30 minute intervals with a 10 minute
cooling off period). For continuous duty applications, Graco recommends using models 25C422 or
25C782.
1. Use closed top drum or other cover to prevent possible contamination.
2. Once the pump is fully cleaned, assembled, and all
connections are securely fastened, insert the pump
into the drum or tank.
3. It is recommended to attach a suitable hose or pipe
to the pump discharge.
4. If you opt to use a hose:
a. Ensure that the hose meets the pump discharge
pressure requirements. It is recommended to
10 3A4586E
Operation
Initial Configuration (17N668
motor with Graco VFD)
For initial setup, review at least the following menus to
configure the system to suit your particular needs. See
your VFD manual for detailed information about each
menu option and about default settings.
1. VFD Parameter P103 controls the maximum frequency (the top end of manual speed) of running
your pump. This setting is NOT your operating frequency. It is the maximum limit of operating frequency.
2. VFD Parameter P108 controls motor overload. Set
so that the VFD cannot supply more current to the
motor than it can handle. The formula for the set
value is:
X = Motor current rating x 100/VFD output current
rating
3. VFD Parameter P171 controls the absolute current
limit. It is set to allow for momentary spikes in current above the limit set in P108. A spike occurs, for
example, when the roller passes over the double
hose section. This parameter is usually set for 2 to 3
times the value on menu P108, which was calculated in the previous step.
Graco VFD Operation (17N668
motor)
VFD Control Panel
FWDAUTO
REV
NOTE: For complete information about the VFD, see
the manufacturer’s instructions supplied with the VFD.
• The control panel display shows the status of the
motor. It also shows the direction of motor rotation:
FWD (forward) or REV (reverse).
• The green RUN key starts the motor.
• The red STOP key stops the motor.
RUN
STOP
4. VFD Parameter P112 controls the direction of motor
rotation. See Reverse Motor Direction, page 12.
5. VFD Parameter P104 (optional) controls the rate at
which the motor will ramp up to the set speed.
6. VFD Parameter P166 (optional) allows for adjustment to the noise that the motor creates. Each setting changes the tone.
• Use the arrow keys to speed up or slow down the
motor.
• The blue R/F key changes the motor rotation (see
Reverse Motor Direction, page 12).
• The blue M key accesses the VFD menu. See the
manufacturer’s instructions for menu descriptions
and information.
If the M key is pressed, use the arrow keys to scroll
through the VFD menu.
Factory Settings
VFD settings are preset at the factory for most applications. See Initial Configuration (17N668 motor with
Graco VFD), page 11, to change the default settings as
needed to suit your needs.
3A4586E 11
Operation
Reverse Motor Direction
NOTE: VFD Parameter P112 controls the direction of
motor rotation. The VFD is shipped with the rotation set
to forward as a default.
1. Verify which direction the pump is rotating.
2. Press the M key to access the VFD menu.
3. Scroll to P112, using the arrow keys.
4. Press the M key again.
5. 00 will display on the screen. Use the arrow keys to
set the display to 01. This allows both forward and
reverse rotation.
6. Press the M key to enter the setting. The screen will
display STOP or the last frequency setting.
NOTE: To use this feature when operating the pump,
press the R/F key, then the M key. The drive will slow
and the motor will reverse direction. Press the RUN key
and check that the roller is moving in the opposite direction.
Pump Shutdown
The output pressure will drop as soon as the motor is
turned off. Any low viscosity fluid in the inlet tube of an
impeller pump will fall to the level of the fluid of the
source vessel. Higher viscosity fluids in an impeller
model or any progressive cavity pump will remain at the
level at the time of shutdown.
Pump shutdown is possible using the ON/OFF switch on
the motor.
Adjust the Speed
Use the arrow keys on the VFD control panel to
increase or decrease the motor speed.
12 3A4586E
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