Graco Crown Imperial Series Datasheet

308060
Rev. M
First choice when
quality counts.
Motor
Not Included
with Pump
TI0571B
INSTRUCTIONS-PARTS LIST
INSTRUCTIONS
This manual contains important
warnings and information.
READ AND KEEP FOR REFERENCE.
STAND PIPE MOUNTED; CORROSION-RESISTANT OR WATERBORNE
Crown Imperial Pumps
250 psi (1.7 MPa, 17 bar) Maximum Working Pressure
Electric, Multi-Stage, Centrifugal,
Stand Pipe Mounted Pumps for Circulating Systems with
60 in. (1.5 m) Maximum Tank Height
PUMP MODEL CHART
No. of
Stages
Corrosion Resistant
Standard size for 60 in.
(152cm) max. tank
height
Waterborne
Standard size for 60 in.
(152 cm) max. tank
height
Model No. Model No.
6 223806 223706
7 223807 223707
8 223808 223708
9 223809 223709
10 223810 223710
11 223811 223711
12 223812 223712
13 223813 223713
14 223814 223714
15 NONE 237015
STANDPIPE
66 in. (1.7 m) high. Purchase separately.
Diameter Stainless Steel
Model No. Carbon Steel Model No.
8 in.
(203 mm)
208995 214644
11 in.
(279 mm)
904628* 903683*
* Adapter plate 903688 is required with this stand.
Order separately.
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
COPYRIGHT 2019, GRACO INC.
Graco Inc. is registered to I.S. EN ISO 9001

2 308060
Table of Contents
Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lubrication 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preventive Maintenance 9. . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessories 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warranty 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Phone Numbers 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Symbols
Warning Symbol
WARNING
This symbol alerts you to the possibility of serious
injury or death if you do not follow the instructions.
Caution Symbol
CAUTION
This symbol alerts you to the possibility of damage to
or destruction of equipment if you do not follow the
corresponding instructions.

3308060
WARNING
INSTRUCTIONS
EQUIPMENT MISUSE HAZARD
Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury.
This equipment is for professional use only.
Read all instruction manuals, tags, and labels before operating the equipment.
Use the equipment only for its intended purpose. If you are not sure, call your Graco distributor.
Do not alter or modify this equipment.
Check equipment daily. Repair or replace worn or damaged parts immediately.
Do not exceed the maximum working pressure of the lowest rated system component. Refer to the
Technical Data on page 29 for the maximum working pressure of this equipment.
Use fluids and solvents which are compatible with the equipment wetted parts. Refer to the Tech-
nical Data section of all equipment manuals. Read the fluid and solvent manufacturer’s warnings.
Wear hearing protection when operating this equipment.
Comply with all applicable local, state, and national fire, electrical, and safety regulations.
FIRE, EXPLOSION, AND ELECTRIC SHOCK HAZARD
Improper grounding, poor ventilation, open flames or sparks can cause a hazardous condition and
result in a fire or explosion and serious injury.
Ground the equipment. Refer to Grounding on page 5.
If there is any static sparking or you feel an electric shock while using this equipment, stop spray-
ing immediately. Do not use the equipment until you identify and correct the problem.
Provide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid
being sprayed.
Consult the electric motor manufacturer for the proper heater-breaker requirements.
MOVING PARTS HAZARD
Moving parts in the pump housing can pinch or amputate your fingers.
Keep clear of all moving parts when starting or operating the pump.
Keep all tools, etc. away from the moving parts to reduce the risk of accidentally catching and
breaking them.
Before servicing the equipment, shut off the electric power, relieve the pressure, and drain the
pump by opening the drain valve at the pump base.
HOT SURFACE HAZARD
The pump housing and pump shaft couplers become hot during operation. To reduce the risk of
burning yourself, do not touch them until they have cooled.

4 308060
Installation
TI0572
Fig. 1
1
KEY
A Elbow
B Mix Tank
C Agitator
D Shutoff Valve, Return Line
E Return Line
F Back Pressure Valve
G Flow Meter
H Motor
J Check Valve
K Tank Shutoff Valve
L Pressure Gauge with Pulsa-
tion Dampener and Isolation
Valve
M Open to Air
N Air Blowdown Valve
O To Spray Booth
P Fluid Filter
Q Line Isolation Valve
R Filter Drain Valve
S Standby Pump/System Blow-
down Connection Valve
T To Standby Pump
U Outlet Pressure Gauge with
Drain Valve
V Standpipe
W Outlet Shutoff Valve
X Tank Drain Valve
E
D
F
G
C
B
A
W
V
H
J
KS
LMN
O
P
Q
QR
Q
T
X
U
To minimize turbulence, extend return line to bottom of tank
and use elbow to direct flow around perimeter of tank.
Q
1

5308060
Installation
Grounding
WARNING
Ground the pump in accordance with all applicable
safety codes in your area. Proper grounding re-
duces the risk of shock, fire, or explosion caused
by static sparking, which can result in serious injury
and property damage.
1. Have a licensed electrician complete the electrical
hookup and wiring.
2. Consult the electric motor manufacturer for proper
heater-breaker requirements.
3. Before coupling the pump coupler to the motor
shaft coupler, check to be sure the shaft rotates in
the proper direction. Refer to Fig. 2, page 6.
System Design
The Typical Installation shown on page 4, and the
following text, is only a guide to show the relationship
of the pump to other system components. Due to the
pressure characteristics of the pump, which vary
widely with viscosity and specific gravity, professional
systems design is essential. Contact Graco (see back
page) for further information.
Pump dimensions and the mounting hole layout are
shown on page 24. The Technical Data is given on
page 29.
Fluid Lines
Line sizes depend on the flow requirements and calcu-
lated pressure drop due to the length of the run.
The pipe, tubing and fittings must be compatible with
the fluid and solvent you plan to use.
Keep in mind that sharp corners and fittings between
lengths of pipe or tubing may cause flow restrictions
and fluid breakdown. Use the longest lengths of pipe or
tubing available to minimize couplings. Use the most
direct route to the spray stations, and whenever practi-
cal, use long sweeping bends. A “holsclaw” bender is
recommended for making bends in tubing; a common
electrician’s or plumber’s bender is not satisfactory.
Remove burrs, dirt and contaminants from the ends of
the tubes before installing the fittings.
Return Line
Install a back pressure valve (F) to maintain proper line
pressure to all outlets. Install a flow meter (G) to
visually check the fluid flow rate.
Extend the return line (E) going into the mix tank (B) to
the bottom of the tank and end it with an elbow (A).
The elbow directs fluid around the walls of the tank to
help minimize air entrainment in the fluid.
Supply Line
Install a line check valve (J) near the 2 in. npt(f) pump
outlet.
CAUTION
The line check valve (J) is required to prevent fluid
backflow into the pump in case of a power failure or
incorrect operating procedure.
Install a pressure gauge (G) at the plugged 1/2 npt(f)
port at the left of the pump outlet. Make sure the
gauge is correctly rated for the operating pressure.
Fluid Filters
Install two fluid filters (P) with line isolation valves (Q)
on each side. This allows the system to be used while
cleaning a filter.

6 308060
Installation
Mounting the Pump
Secure the pump, without the motor, in the pump
standpipe (V), using the bolts provided.
Be sure the pump inlet and the plumbing to the mix
tanks are at the same level. Install the necessary
plumbing, using shims as necessary. Then bolt the
pump standpipe and the tanks securely to the floor.
CAUTION
Do not flush the pump with any acid, caustic or
abrasive flush solution (line stripper) of any type. The
pump is designed to circulate automotive paint
coatings only.
After All Lines Are Installed
Flush all lines with a compatible solvent and blow out
with air. Then clean the elements of the filters (P).
Installing the Motor
Remove the protective cover and the shipping dowel
from the pump base (31). Remove the motor coupler
(29).
When wiring the motor, be sure the shaft rotates in the
direction shown on the pump base and in Fig. 2.
Place the motor coupler (29) on the motor shaft (A),
pushing it up, well beyond the end of the shaft. Lightly
snug the setscrew (B).
Lower the motor onto the pump base, making sure the
motor locating flange seats properly on the pump
base.
Loosen the motor coupler setscrew (B). Pull the cou-
pler (29) down to engage with the pump coupler (58)
and coupling insert (6).
Adjust the motor coupler to 0.094 in. (2.39 mm) clear-
ance. See Fig. 2. Tighten the pump coupler setscrew.
CAUTION
1. Before operating the pump, turn the motor
coupler by hand to be sure the shaft rotates
freely in the correct direction. Then recheck the
0.094 in. (2.39 mm) coupler clearance.
2. The pump is factory-set to deliver maximum
outlet pressure. Do not tamper with this adjust-
ment as it could cause damage to the impellers
and bowls and void the warranty.
3. Never leave any contaminants, nuts, bolts, rags,
etc., in the fluid tank or supply lines as they could
seriously damage the impellers or bowls.
1
2
0312203121
Fig. 2
31
33
58
6
29
0.094 in. (2.39 mm)
Outlet Pressure Gauge
A
Direction of Rotation for Motor
1
2
B
3122B

7308060
Operation
CAUTION
The pump is designed for continuous operation.
Regular shutdown at night or on weekends may
cause premature bearing wear and invalidate the
warranty.
Do not let the pump run dry. Operating the pump for
more than 10 seconds without fluid circulating
through it will overheat the pump and damage it.
Flushing and Priming System
(See the Typical Installation and Fig. 2.)
The procedure given here is for a stand-mounted
pump, two mix tank system as shown in the Typical
Installation on page 4. Some specific instructions
may not apply to other systems; consult your plant’s
flushing procedures.
Flushing is important; it cleans all equipment and lines
of impurities. Following these instructions will help
assure satisfactory operation with quality control.
CAUTION
1. Be sure the motor rotates in the correct direction
and the drive coupler clearance is set at 0.094
in. (2.39 mm). See Fig. 2.
2. If the motor labors or the pump does not run
smoothly, check the motor for high amp draw
and check the thrust bearing for overheating.
The normal operating temperature is from 120
to 150 F (49 to 65 C). If the temperature is
higher than 150 F (65 C), consult a qualified
Graco representative after a repair check of the
drive coupler clearance.
3. Be sure the circulating lines are flushed and
primed with fluid as instructed below. Do not
flush the pump with any acid, caustic or abrasive
flush solution (line stripper) of any type. The
pump is designed to circulate automotive paint
coatings only.
1. Preparing to flush the inside of the mix tanks
a. Close the outlet valves (W) of both tanks.
b. Pour about 100 gallons (380 liters) of the
appropriate solvent into each tank.
c. Open the outlet (W) and return valves (K) on
one tank only.
2. Starting the pump
(Always use this procedure to start the pump)
a. Close the isolation valves (Q) on one filter.
b. Use the valve (Q) in front of the other filter to
control the pump flow to 50 psi (3.5 bar) until
the lines are full. Then completely open the
valve.
c. Run the pump for several minutes, and then
shut off the pump.
d. Recheck the drive coupler for 0.094 in. (2.39
mm) clearance.
CAUTION
The pump coupler and bearing could move up during
shipment and then, when the pump is operated, it
could move down, leaving too much clearance. This
could damage both the coupler insert and the cou-
pler.
3. Checking the system for leaks
a. Restart the pump and check the entire system
for leaks.
b. Tighten leaking joints as necessary.
c. Periodically check for leaks during flushing.
4. Continue flushing
a. Continue circulating the solvent, changing the
solvent as needed until the system is thor-
oughly flushed.
b. When the system is clean, stop the pump.
c. Drain all filtered residue from the filters (P).
d. Reconnect the return line (E) to the back
pressure valve (F).

8 308060
Operation
e. Close the outlet (W) and return valves (K) for
the tank being used and open the outlet and
return valves for the other tank.
f. Start the pump and circulate the solvent for at
least one hour.
g. While circulating, open the spray gun at each
drop and flush the hoses with about one gallon
(4 liters) of solvent.
5. When flushing is complete
a. Stop the pump and drain all solvent from the
tanks and lines.
b. Open the filter drain valves (R) to flush out all
filtered residue.
c. Thoroughly blow out the entire system with
clean, dry compressed air, or nitrogen, to
remove all solvent from the system.
6. Pumping paint
a. Fill a tank with paint and start the agitator (C).
b. Start the pump.
c. Use the filter isolation valve (Q) to control the
pump flow to 50 psi (3.5 bar) until the lines are
full, and then open the valve completely.
d. Circulate the paint until all air is removed from
the fluid lines.
e. While the paint is circulating, check and adjust
the viscosity as necessary.
7. Filling standby tank
a. Fill the other mix tank (standby tank) with paint
and start the agitator.
b. Leave the agitator running so that paint in the
standby tank will be ready for use when need-
ed.
c. To keep air out of the system, always switch to
the standby tank before the paint supply in the
tank you have been using is completely
exhausted.
8. Flushing paint from system
Consult the paint supplier for a compatible solvent for
flushing paint from the system. Water reducible paints
should use de-ionized water and a solvent which will
keep resin in the solution. If water reducible paint has
a 20% solvent content, the flush media should also
contain approximately 20% solvent.
CAUTION
Do not flush the pump with any acid, caustic or
abrasive flush solution (line stripper) of any type. The
pump is designed to circulate automotive paint
coatings only.
CAUTION
De-ionized (D.I.) water is an agressive, corrosive
material. It can be used on the wateborne versions of
the Imperial Pumps. Exposure of all other Imperial
Pumps to D.I. water should be minimized, and the
D.I. water should be flushed from the pump with a
non-corrosive material such as alcohol.
Adjusting System Pressure
Use the back pressure valve (F) to adjust the system
pressure.
Determine the line pressure required. Then, with paint
circulating in the line loop only, set the back pressure
valve so that the pressure at the last spray gun is 10
psi (0.7 bar) greater than needed.
Refer to the Typical Installation on page 4 and the
separate back pressure valve instructions.
CAUTION
The pump is set at the factory to deliver the maxi-
mum volume and outlet pressure. The pressure
cannot be increased by any adjustment of the pump.
Refer to Pump Thrust Bearing and Seal Replace-
ment, page 12, for proper adjustments.

9308060
Lubrication
Lubricate the thrust bearing once a month if the pump
is operating continuously. To lubricate the bearing,
pump one or two shots (about 0.1 oz/2.8 grams) of
Chevron SRI/No. 2 NLGI grade grease through the
fitting on the top of the seal retainer. A 14 oz. tube of
this grease is supplied with the pump. See Fig. 3.
NOTE: Do not lubricate the bearing when you first
receive the pump as it is factory greased.
CAUTION
Use only Chevron SRI/No. 2 NLGI grade grease to
help prevent bearing overheating and premature
bearing failure. This green or brown-colored grease
is used for the factory pack and must not be mixed
with any other type of grease. The use of any other
type of grease will void the Graco Warranty.
CAUTION
Do not over grease the bearing, which may cause
the bearing to overheat. Remove any excess grease
after lubricating.
03122
Fig. 3
1
1
Grease here.
54
3122B
Thrust Bearing Temperature Monitoring
The 3/8” npt plug (54) can be removed from the pump
base to install a temperature sensor to monitor thrust
bearing temperatures. This sensor can be purchased
from an appropriate outside supplier
Preventive
Maintenance
Thrust Bearing. Once a month, lubricate the thrust
bearing if pump is run continuously. Refer to thrust
bearing Lubrication instructions on this page. It is
recommended that the Imperial pump thrust bearing
assembly be replaced at least once a year.
Pump Pressure, Flow, and Temperature. Once a
month, check the static discharge pressure, flow rate
of the pump, thrust bearing temperature, and coupler
clearance. Record them.
NOTE: If the operating temperature exceeds 150 F
(65 C) and normal maintenance, troubleshooting, and
service fails to reduce temperature, contact a qualified
Graco representative.
CAUTION
Blockage of the overflow tube and overflow chamber
on pump base will cause leakage through the shaft
seal and adjustment nut opening.

10 308060
Troubleshooting
CAUTION
When checking the pump pressure, do not leave the
check valve (J) or isolation valves (Q) closed for
more than 10 seconds while the pump is operating to
avoid overheating the pump and damaging the seals
and bearings.
NOTE: Graco offers a rebuild program on all Imperial
and Crown Imperial pumps. Contact your local sales
representative for details.
WARNING
Before removing the pump for repair, shut off the
electric power, relieve the pressure, and drain the
pump by opening the drain valve at the pump base.
This will help reduce the risk of serious injury from
electric shock, moving parts, or splashing fluid in
the eyes.
Problem Cause Solution
Pump won’t run. 1. Electric power out. 1. Check fuses; clean terminals
and connections.
2. Fuses blown. 2. Check coupler clearance, re-
place fuses, repair pump (call
Graco Detroit, see back page).
3. Motor inoperative. 3. Repair or replace motor.
Pump runs but pressure drops
slightly.
1. Clogged pump intake. 1. Remove and clean.
2. Increased flow rate. 2. Adjust back pressure valve.
3. Parts worn or damaged. 3. Repair pump.
4. Air entrained in fluid. 4. *Purge air. See Startup Proce-
dure on page 7.
Pump runs but pressure very low
or unsteady.
1. Clogged pump inlet. 1. *Clean.
2. Air entrained in fluid. 2. *Purge air. See Startup Proce-
dure on page 7.
3. Problem with electric motor. 3. Check motor for proper rotation.
Check that RPM of motor is at
least 3750 under load.
TROUBLESHOOTING CHART IS CONTINUED ON PAGE 11.
* Before removing the pump for cleaning, close the
check valve (J) or line isolation valves (Q) and note
the maximum pump pressure; the pressure should
be steady. Do not leave valves closed for more
than 10 seconds.
If pressure variations or pulsations are noted, the
problem could be 1.) a clogged intake, 2.) too low a
fluid level in the tanks, or 3.) restricted plumbing.
Correct the clogged condition to obtain steady
pressure.
Low pressure can also be caused by air entrainment in
water reducible fluids. All return lines in tanks with
water reducible fluid must be routed to the bottom of
the tank.
Be careful to avoid allowing deteriorated pieces of bag
filters into the pump which can result in serious dam-
age to the pump.