Graco SaniForce 3250 Instruction Manual

Operation
SaniForce®3250 High
Sanitation Diaphragm Pump
For transfer of fluids in sanitary applications. Not approved for use in European explosive
atmosphere locations. For professional use only.
100 psi (0.7 MPa, 6.9 bar) Maximum Fluid Working Pressure
100 psi (0.7 MPa, 6.9 bar) Maximum Air Input Pressure
Important Safety Instructions.
Read all warnings and instructions in
this manual. Save these instructions.
3A6779D
EN

2 3A6779D
Contents
Related Manuals. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Warnings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Configuration Number Matrix . . . . . . . . . . . . . . . . . 5
Material Temperature Range. . . . . . . . . . . . . . . . . . 6
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . 7
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
General Information . . . . . . . . . . . . . . . . . . . . . . . 8
Tighten Clamps Before First Use. . . . . . . . . . . . . 8
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Stand and Mounting. . . . . . . . . . . . . . . . . . . . . . . 9
Air Line. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Fluid Suction and Outlet Lines. . . . . . . . . . . . . . 10
Tips to Reduce Cavitation . . . . . . . . . . . . . . . . . 10
Typical Installation . . . . . . . . . . . . . . . . . . . . . . . 11
Air Exhaust Ventilation. . . . . . . . . . . . . . . . . . . . 12
Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Pressure Relief Procedure . . . . . . . . . . . . . . . . . 13
Sanitize the Pump Before First Use . . . . . . . . . . 13
Start and Adjust the Pump . . . . . . . . . . . . . . . . . 14
Pump Shutdown. . . . . . . . . . . . . . . . . . . . . . . . . 14
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Flushing and Storage . . . . . . . . . . . . . . . . . . . . . 15
Routine Cleaning of Product Contact Section of
Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Tightening Connections . . . . . . . . . . . . . . . . . . . 15
Technical Specifications . . . . . . . . . . . . . . . . . . . . 16
Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Performance Chart. . . . . . . . . . . . . . . . . . . . . . . 17
Technical Specifications. . . . . . . . . . . . . . . . . . . 18
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 20
Graco Information. . . . . . . . . . . . . . . . . . . . . . . . . . 20
Related Manuals
English Manual
Number Title
3A6783 SaniForce High Sanitation Diaphragm Pump, Model 3250, Repair/Parts

Warnings
3A6779D 3
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 symbol refers to procedure-specific risk.
When these symbols appear in the body of this manual, refer back to these warnings. Additional, product-specific
warnings may be found throughout the body of this manual where applicable.
WARNING
FIRE AND EXPLOSION HAZARD
Flammable fumes, such as solvent, in work area can ignite or explode. Solvent flowing through the
equipment can cause static sparking. To help prevent fire or explosion:
• Use equipment only in well ventilated area.
• Eliminateallignitionsources;suchas pilotlights,cigarettes,portableelectriclamps,andplasticdrop
cloths (potential static sparking).
• Ground all equipment in the work area. See Grounding instructions.
• 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.
• Use only grounded fluid lines.
• Hold gun firmly to side of grounded pail when triggering into pail. Do not use pail liners unless they
are anti-static or conductive.
•Stop operation immediately if static sparking occurs or you feel a shock. Do not use equipment
until you identify and correct the problem.
• Keep a working fire extinguisher in the work area.
• Routeexhaust awayfromall ignitionsources. Ifdiaphragm ruptures, fluidmay beexhausted withair.
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 fluid lines, tubes, and couplings daily. Replace worn or damaged parts immediately.

Warnings
4 3A6779D
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 Specifications in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical
Specifications 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.
• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine
manufacturer’s replacement parts only.
• Donotalterormodifyequipment.Alterationsormodificationsmayvoidagencyapprovalsandcreate
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 fluid lines and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.
• Do not kink or over bend fluid lines or use fluid lines to pull equipment.
• Keep children and animals away from work area.
• Comply with all applicable safety regulations.
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.
• Route exhaust away from work area. If diaphragm ruptures, fluid may be exhausted into the air.
• Store hazardous fluid in approved containers, and dispose of it according to applicable guidelines.
BURN HAZARD
Equipment surfaces and fluid that is heated can become very hot during operation. To avoid severe
burns:
• Do not touch hot fluid or equipment.
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. 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.
WARNING

Configuration Number Matrix
3A6779D 5
Configuration Number Matrix
Check the identification plate (ID) for the Configuration
Number of your pump. Use the following matrix to define
the components of your pump.
When you receive your pump, record the 9 character
part number found on the shipping box (e.g.,
SP3B.0014): _____________
Also record the configuration number on the pump ID
plate to assist you when ordering replacement parts:
_____________________________________
ID
NOTE: Some combinations are not possible. Please check with your local supplier.
Sample Configuration Number: 3250HS.PP01ASSASSPTPSEP21
3250 HS P P01A SSA SS PT SP EP 21
Pump
Model Wetted Section
Material
Drive Center Section and
Air Valve Material Manifolds Seats Checks Diaphragms Seals Certification
Pump Wetted Section
Material Drive Type Center Section and Air Valve Material Manifolds
3250 3A 3-A compliant P Pneumatic P01A Polypropylene SSA Stainless steel,
TriClamp, hoizontal
HS High Sanitation P02A Polypropylene, leak
detector SSB Stainless steel, DIN, horizontal
PH Pharmaceutical P03A Polypropylene, PH
PP1A Polypropylene, PS
diaphragms
PP2A Polypropylene, leak
detector, PS
diaphragms
PP3A Polypropylene, PH, PS
diaphragms
Seat Material Checks Diaphragm Material Seals Certification
SS 316stainless
steel, ball BN Buna-N BN Buna-N BN Buna-N 21 EN 10204 type 2.1
CR Polychloroprene Ball EO EPDM Overmold EP EPDM 31 EN 10204
type 3.1
EP EPDM FK FKM Fluoroelastomer FK FKM
FK FKM Fluoroelastomer
Ball PS PTFE/Santoprene
PT PTFE Ball SP Santoprene
SP Santoprene Ball

Configuration Number Matrix
6 3A6779D
Fluid Temperature Range
Approvals
Diaphragm materials coded EO, PO, or PS
combined with PT ball checks comply with:
EC 1935/2004
Diaphragm materials coded EO or PS combined
with PT ball checks comply with: Class VI
All models are approved to:
All fluid contact materials are FDA compliant and
meet the United States Code of Federal
Regulations (CFR)
NOTICE
Temperature limits are based on mechanical stress only. Certain chemicals will further limit the
fluid temperature range. Stay within the temperature range of the most-restricted wetted compo-
nent. Operating at a fluid temperature that is too high or too low for the components of your pump
may cause equipment damage.
Diaphragm/Ball/Seat Material Fluid Temperature Range
Fahrenheit Celsius
Buna-N (BN) 10° to 180°F -12° to 82°C
FKM Fluoroelastomer (FK) -40° to 275°F -40° to 135°C
Polychloroprene check balls (CR) 14° to 176°F -10° to 80°C
EPDM overmolded diaphragm (EO) -40° to 250°F -40° to 121°C
PTFE check balls (PT) 40° to 220°F 4° to 104°C
2-piece PTFE/Santoprene diaphragms (PS) -40° to 180°F -40° to 82°C
Santoprene (SP) -40° to 180°F -40° to 82°C

Configuration Number Matrix
3A6779D 7
Ordering Information
To Find Your Nearest Distributor
1. Visit www.graco.com.
2. Click on Where to Buy and use the Distributor Locator.
To Specify the Configuration of a New Pump
Please call your distributor.
OR
Use the Online Diaphragm Pump Selector at www.graco.com. Search for Selector.
To Order Replacement Parts
Please call your distributor.

Installation
8 3A6779D
Installation
General Information
• A typical installation is shown in FIG. 2. It is only a
guide for selecting and installing system
components. Contact your Graco distributor for
assistance in planning a system to suit your needs.
• Always use genuine Graco parts and accessories.
• Reference numbers and letters in parentheses refer
to the callouts in the figures.
Tighten Clamps Before First Use
After you unpack the pump, and before you use it for the
first time, check all clamps, and tighten as necessary.
Grounding
The equipment must be grounded to reduce the risk
of static sparking. Static sparking can cause fumes to
ignite or explode. Grounding provides an escape wire
for the electric current.
•Always ground the entire fluid system as
described below.
• Polypropylene pumps are not conductive and are
not for use with flammable fluids.
• Follow your local codes and regulations.
•Pump: Connect a ground wire and clamp as shown
in FIG. 1. Loosen the grounding screw (W). Insert
one end of a 1.5 mm² (12 AWG) or thicker ground
wire (X) behind the grounding screw and tighten the
screw securely. Connect the clamp end of the
ground wire to a true earth ground.
X
WTI4736A
FIG. 1: Ground Wire Connection
•Air and fluid lines: Use only conductive lines with a
maximum of 150 m (500 ft ) combined line length to
ensure grounding continuity. Check electrical
resistance of lines. If total resistance to ground
exceeds 29 megohms, replace line immediately.
•Fluid supply container: Follow the local codes and
regulations.
•Pails for solvents and sanitizing solution used when
flushing: Follow local codes and regulations. Use
only conductive metal pails, placed on a grounded
surface. Do not place the pail on a nonconductive
surface, such as paper or cardboard, which
interrupts grounding continuity.

Installation
3A6779D 9
Stand and Mounting
For pumps that are provided with a stand, the pump
must be mounted to the stand before securing the pump
to the mounting surface. Ensure that the pump is
securely mounted to the stand.
1. Ensure that the mounting surface is level and can
support the weight of the pump, lines, and
accessories, as well as the stress caused during
operation.
2. Mount the pump and stand assembly on a level
surface and secure the assembly to the mounting
surface. See Technical Specifications, page 16,
for dimensions of the mounting holes for your pump.
NOTE: For ease of operation and service, mount
the pump so the air valve cover, air inlet, and fluid
inlet and outlet ports are easily accessible.
Air Line
1. Install the air line accessories as shown in FIG. 2.
Verify that the air line supplying the accessories is
grounded.
a. Install an air regulator (C) and air pressure
gauge (V) to control the fluid pressure. The fluid
outlet pressure will be the same as the setting of
the air regulator.
b. Locate one bleed-type master air valve (B)
close to the pump and use it to relieve trapped
air. Locate the other master air valve (E)
upstream from all air line accessories and use it
to isolate them during cleaning and repair.
c. The air line filter (F) removes harmful dirt and
moisture from the compressed air supply.
2. Install a conductive, grounded, flexible air supply
line (A) between the accessories and the 3/4 npt(f)
pump air inlet (M).
The pump is very heavy (see Technical
Specifications on page 16 for specific weights). If the
pump must be moved, follow the Pressure Relief
Procedure on page 13 and have two people lift the
pump by grasping the outlet manifold securely, or use
appropriate lifting equipment. Never have one person
move or lift the pump.
A bleed-type master air valve (B) is required in the
system to relieve air trapped between this valve and
the pump. Trapped air can cause the pump to cycle
unexpectedly, which could result in serious injury,
including splashing in the eyes or on the skin. See
FIG. 2.

Installation
10 3A6779D
Fluid Suction and Outlet Lines
For best sealing results, use a standard tri-clamp or DIN
style sanitary gasket of a flexible material such as
EPDM, Buna-N, fluoroelastomer, or silicone.
NOTE: Compliance with 3-A sanitary standards requires
DIN connections to use certain gaskets. See CCE
Coordination Bulletin Number 2011-3.
1. Install flexible, conductive fluid lines (G and L).
2. Install a fluid drain valve (J) close to the pump fluid
outlet. See FIG. 2.
3. Install a fluid shutoff valve (K) in the fluid outlet line
(L) downstream from the fluid drain valve (J).
NOTE: For best results, always install the pump as
close as possible to the material source. See the
Technical Specifications, page 16, for maximum
suction lift (wet and dry).
Tips to Reduce Cavitation
Cavitation in a diaphragm pump is the formation and
collapse of bubbles in the pumped liquid. Frequent or
excessive cavitation can cause serious damage,
including pitting and early wear of fluid chambers, balls,
and seats. It may result in reduced efficiency of the
pump. Cavitation damage and reduced efficiency both
result in increased operating costs.
Cavitation depends on the vapor pressure of the
pumped liquid, the system suction pressure, and the
velocity pressure. It can be reduced by changing any of
these factors.
1. Reduce vapor pressure: Decrease the temperature
of the pumped liquid.
2. Increase suction pressure:
a. Lower the installed position of the pump relative
to the liquid level in the supply.
b. Reduce the friction length of the suction lines.
Remember that fittings add friction length to the
lines. Reduce the number of fittings to reduce
the friction length.
c. Increase the diameter of the suction lines.
d. Ensure the inlet fluid pressure does not exceed
25% of the outlet working pressure.
3. Reduce liquid velocity: Slow the cyclic rate of the
pump.
Pumped liquid viscosity is also very important but
normally is controlled by factors that are process
dependent and cannot be changed to reduce cavitation.
Viscous liquids are more difficult to pump and more
prone to cavitation.
Graco recommends taking all of the above factors into
account in system design. To maintain pump efficiency,
supply only enough air to the pump to achieve the
required flow.
Graco distributors can supply site-specific suggestions
to improve pump performance and reduce operating
costs.
A fluid drain valve (J) is required to relieve pressure in
the fluid outlet line if it is plugged. The drain valve
reduces the risk of serious injury, including splashing
in the eyes or on the skin, when relieving pressure.
NOTICE
The pump can be damaged if flexible fluid lines are
not used. If hard-plumbed fluid lines are used in the
system, use a short length of flexible, conductive fluid
line to connect to the pump.