Graco Husky 715 Bedienungsanleitung
308–781
Rev. A
First
choice when
quality counts.
7323A
INSTRUCTIONS-PARTS
LIST
INSTRUCTIONS
This
manual contains important
warnings and information.
READ AND KEEP FOR REFERENCE.
Husky
715 T
exture Pump
100 psi (0.7 MPa, 7 bar) Maximum Air and Fluid Working Pressure
Model
239–421, Series A
U.S.
Patent Nos. 4,789,131 and 4,867,653
Other U.S. and Foreign Patents Pending
Table
of Contents
Warnings 2.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance 5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 6
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service
– Air V
alve 7.
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service
– Duckbill V
alves 12.
. . . . . . . . . . . . . . . . . . . . . .
Service
– Diaphragm
13.
. . . . . . . . . . . . . . . . . . . . . . . . .
Parts
List
16.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts
Drawing
17.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical
Data
19.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco
W
arranty 20.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco
Phone Number
20.
. . . . . . . . . . . . . . . . . . . . . . . . .
GRACO INC. P.O. BOX 1441
MINNEAPOLIS, MN
55440–1441
COPYRIGHT
1997, GRACO INC.
Graco
Inc. is registered to I.S. EN ISO 9001
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
instructions.
WARNING
INSTRUCTIONS
EQUIPMENT MISUSE HAZARD
Equipment
misuse can cause the equipment to rupture or malfunction and result in serious injury
.
D
This equipment is for professional use only
.
D
Read all instruction manuals, tags, and labels before operating the equipment.
D
Use the equipment only for its intended purpose. If you are not sure, call your Graco distributor
.
D
Do not expose the system to rain. Always store the system indoors.
D
Do not alter or modify this equipment.
D
Check equipment daily
. Repair or replace worn or damaged parts immediately
.
D
Do not exceed the maximum working pressure of the lowest rated component in your system. This
equipment has a
100 psi (0.7 MPa, 7 bar) maximum working pressure at 100 psi (0.7 MPa,
7 bar) maximum air pressure.
D
The system is for use only with water-based simulated acoustic and wall texture materials.
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.
D
Do not use hoses to pull equipment.
D
Route hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose
Graco hoses to temperatures above 82
_
C (180
_
F) or below –40
_
C (–40
_F).
D
Do not lift pressurized equipment.
D
Comply with all applicable local, state, and national fire, electrical, and safety regulations.
WARNING
TOXIC FLUID HAZARD
Hazardous
fluid or toxic fumes can cause serious injury or death if splashed in the eyes or on the skin,
inhaled, or swallowed.
Know the specific hazards of the fluid you are using.
Store hazardous fluid in an approved container
. Dispose of hazardous fluid according to all local,
state and national guidelines.
Always wear protective eyewear
, gloves, clothing and respirator as recommended by the fluid and
solvent manufacturer
.
Pipe and dispose of the exhaust air safely
, away from people, animals, and food handling areas. If
the diaphragm fails, the fluid is exhausted along with the air
.
FIRE AND EXPLOSION 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. See the
Grounding
section in instruction manual 308–718.237683
If there is any static sparking or you feel an electric shock while using this equipment,
stop pump-
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 pumped.
Keep the work area free of debris, including solvent, rags, and gasoline.
Electrically disconnect all equipment in the work area.
Extinguish all open flames or pilot lights in the work area.
Do not smoke in the work area.
Do not turn on or of
f any light switch in the work area while operating or if fumes are present.
Do not operate a gasoline engine in the work area.
4 308-781
Operation
See your system manual for operating instructions.
5308-781
Maintenance
WARNING
PRESSURIZED EQUIPMENT HAZARD
The equipment stays pressurized until pressure is
manually relieved. To reduce the risk of serious
injury from pressurized fluid, accidental spray from
the gun or splashing fluid, follow this procedure
whenever you
Are instructed to relieve the pressure
Stop pumping
Check or service any system equipment
Install or clean the spray nozzle
Pressure Relief Procedure
1. Shut
of
f the system.
2. T
rigger the gun.
3.
Open the gun air valve, if so equipped.
4.
Disconnect the power source.
Daily checks
Before
each use, check all hoses for wear or damage
and replace as necessary
. Be sure hose connections
are tight and leak-free.
Pump lubrication
After
every 50 hours of fluid pumped, or every month,
remove the quick-disconnect hose from the pump air
inlet (A). Add two drops of machine oil into the air inlet.
Refer to Fig. 1.
Tighten pump’s threaded
connections every six months
Remove
the pump from the cart and thoroughly check
and tighten all threaded connections.
When tightening the clamps (109), apply thread
lubricant to the bolts, and
be sure
to torque the nuts
(1
10) to 75 to 85 in-lb (8.5 to 9.6 N.m). See Fig. 1.
T
orque the manifold bolts (105) and the adaptor bolts
(59) to 3 to 6 ft-lb (4 to 8 N-m).
110
A
Key
A
Air inlet
110
Clamp nuts
109 Clamps
Add
two drops of machine
oil into air inlet every 50
hours.
109
Apply thread lubricant to
bolts, and torque the nuts
(1
10) to 75 to 85 in-lb
(8.5 to 9.6 N.m).
Fig.
1
7324A
105
Torque
to 3 to 6 ft-lb
(4 to 8 N-m).
59
6 308-781
Troubleshooting
WARNING
To
reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the
Pressure Relief Procedure
on page 5.
See the
Troubleshooting
section of instruction manual 308–718 before you proceed with the table below
. Check
all possible problems and causes before you disassemble the pump.
PROBLEM CAUSE SOLUTION
Pump will not cycle, or cycles once
and stops.
Air valve (200) is stuck or dirty.
Disassemble, clean, and lube air valve.
See page 9.
Broken or damaged springs (209, 212)
and/or valve cup (210) and plate (13).
Repair or replace components, or re
-
place complete air valve (kit 237–683).
See page 7.
W
orn or broken detent link (213).
Replace detent link and ball (207), or
complete air valve (kit 237–683).
Pump cycles at stall, or fails to hold
pressure at stall.
Leaky duckbill valves (52).
Repair or replace.
See page 12.
Excessive air leakage from exhaust
port, or air exhausts at stall.
W
orn air valve cup (210) or plate (13). Repair or replace.
See page 9.
W
orn shaft seals (30).
Repair or replace.
See page 14.
Pump operates erratically
. Sticky or leaking duckbill valves (52).
Repair or replace.
See page 12.
Air bubbles in fluid.
Suction line is loose.
Tighten.
Diaphragm (60) is ruptured.
Replace.
See page 13.
Loose manifold (102) or adapters (57)
T
ighten bolts (59, 105).
See page 5.
Manifold o-rings (50) or adapter o-rings
(53) are leaking.
Replace.
See page 12.
Loose outer diaphragm plates (1
18). T
ighten.
See page 14.
Fluid in exhaust air
.
Diaphragm (60) is ruptured, or dia
-
phragm plates (1
18, 1
16) are loose or
cracked.
Replace diaphragm and/or tighten
plates.
See page 14.
Pump exhausts air from clamps.
Clamps (109) are loose.
T
ighten clamps.
See page 5.
Pump exhausts air near air valve.
Air valve screws (10) are loose. Tighten screws.
See page 7.
Air valve o-ring (201) is damaged.
Inspect; replace.
See page 8.
Pump leaks fluid from check valves.
Adaptors (57) are loose.
T
ighten bolts (59).
See page 12.
p
W
orn or damaged o-rings (50).
Inspect; replace.
See page 12.
Pump
Repair – Air V
alve
Replacing the Air Valve
WARNING
To
reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure
on page 5.
NOTE:
Air V
alve Kit 237–683 is available. Parts
included in the kit are shown with a dagger (
) after the
Ref. No. A tube of general purpose grease is supplied
in the kit. Replace the air valve as follows:
1.
Relieve the pressure.
2.
Unscrew the six mounting screws (10), and
remove the air valve (200). See Fig. 2.
3.
Use an o-ring pick to remove the bearing (125).
Remove the lower link bearing (24). See Fig. 3.
4.
Remove the two screws (23) holding the valve
plate (13) to the pump. Use an o-ring pick to
remove the valve plate and seal (12). Clean and
inspect the parts. Replace any worn ones. See
Fig. 3.
5.
If the pilot pins (26) are accessible from the inside
of the pump housing (2), pull them out. See Fig. 3.
If not accessible, disassemble the fluid section as
explained on pages 13 to 15.
NOTE:
Inspect the pilot pin o-rings (28) and bearings
(27) in place. Removal will destroy the bearings and is
not required unless they are damaged. T
o service the
bearings, first perform steps 4 and 5 on page 13.
6.
Use a 1/8 in. EZY
-OUT to remove the bearings
(27) from the housing (2). See Fig. 10 on page 14
for an illustration of how to use an EZY
-OUT.
Remove the o-rings (28). Clean and inspect the
parts. Replace any worn parts.
7325A
Fig. 2
GREASE APPLICA
TION
201
T
orque oppositely and evenly to 20 to 25 in-lb (2.3 to 2.8 N.m).
Apply grease.
218
10
200 214
217
05524
Pump
Repair – Air V
alve
NOTE:
If the pilot pin o-rings (28) and bearings (27)
were not removed, go to step 8.
7.
Grease the o-rings (28) and install them in the
bearings (27). Press the bearings and o-rings in
place so the bearings are flush with the surface of
the housing (2). See Fig. 3.
8.
Grease the pilot pins (26), and install them from
the inside of the housing (2). See Fig. 3.
9.
Install the seal (12) in the pump housing (2). Install
the valve plate (13), and secure it with the two
screws (23). T
orque the screws to 5 to 7 in-lb (0.6
to 0.8 N.m). See Fig. 3.
10.
Apply grease to the bearings (125 and 24). Install
the bearing (125) in the pump housing (2).
Reinstall the lower bearing (24). See Fig. 3.
11.
Make certain the o-ring (201) is in good condition
and in place on the air valve cover (206).
12.
Apply grease where shown in Fig. 2.
13.
Align the new air valve assembly so the reset
screw (214) is at the bottom. Check that the pilot
pins (26) inside the pump housing (2) give
clearance for the actuator link (217). Install the six
screws (10), and torque them oppositely and
evenly to 20 to 25 in-lb (2.3 to 2.8 N.m).
CAUTION
If you are replacing the diaphragms (60), you
must
reinstall the air valve before installing the dia
-
phragms, as the diaphragms will force the pilot pins
into the air valve area.
Fig. 3
1
12
23
13
T
orque to 5 to 7 in-lb (0.6 to 0.8 N.m).
1125
24
2
2
Apply grease.
2
04233
4
Press-fit flush with surface of housing (203).
26
28
27 4
2
2
2
9308-781
Pump
Repair – Air V
alve
Disassembly
WARNING
To
reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure
on page 5.
NOTE:
Air V
alve Kit 237–683 is available. Parts
included in the kit are shown with a dagger (
) after the
Ref. No. A tube of general purpose grease is supplied
in the kit.
1.
Relieve the pressure.
2.
Remove the air valve (200) as explained on
page 7.
3.
Remove the screw (221) and the reset shaft
handle (222).
4.
Remove the screw (219) and shift saddle (218).
See Fig. 4.
5.
Disassemble the link assembly
, consisting of the
actuator link (217), spacer (220), detent link (213),
spring (212), stop (21
1), and valve cup (210).
6.
Remove the detent ball (207) and spring (209).
The detent collar (208) is a press-fit and should not
need removal; if it does require replacement, you
should also replace the cover (206).
7.
Remove the reset shaft (214), o-ring (215) and
washer (216).
8.
Clean all parts, and inspect them for wear or
damage. Replace as needed. See
Reassembly
on page 10.
Fig. 4
206
208
211
216
217
215
214
213
220
218
219
212
210
207
209
201
222
221
05525
Pump
Repair – Air V
alve
Reassembly
1.
If
the detent collar (208) was removed,
install a
new collar in a new cover (206). Using a rubber
mallet, carefully press fit the detent collar (208)
into the cover (206). See Fig. 5.
2.
Grease the detent spring (209) and place it in the
collar (208). Grease the ball (207) and set it on the
spring. See Fig. 5.
3.
Apply grease to the o-ring (215), and install it in
the hole in the air valve cover (206), as shown in
Fig. 5. Slide the washer (216) onto the blunt end of
the reset shaft (214). Insert the shaft through the
air valve cover (206) until it seats.
4.
Grease the spring (212). Place the link stop (21
1)
inside the spring. See Fig. 6.
5.
Grease the detent link (213) and link spacer (220).
Assemble the detent link, link spacer
, and actuator
link (217) as shown in Fig. 6. The raised bumps on
the links (213 and 217) must face up.
6.
Squeeze the spring (212), and install it and the
stop (21
1) in the link assembly
. See Fig. 6. The
spring tension will hold all these parts together
.
Grease the valve cup (210) and install it in the link
assembly as shown.
05526
Fig. 5
216
206
209
207
208
214
Apply grease.
Press fit.
215
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6
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1
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