No.
1
Problems
Pump does not operate.
Causes
Air pressure is not supplied to the
unit.
Pump operating air pressure is too
low.
2
Pump operation unstable.
Fluid output is low.
Fluid does not come out
during pump operation.
V-packing (upper, 2-45/3-46 or
lower, 2-49/3-54) is over tightened.
Parts of air motor are worn or
damage.
Parts of air motor are not
assembled correctly.
Pump frozen (supplied air contains
too much moisture).
Exhaust hole of pump is blocked.
Switch Block (2-17) is installed in
the incorrect direction.
Pump operating air pressure is too
low.
Fluid Filter (6-5/7-3), Suction
Filter (8-5) or spray gun filter is
clogged.
Suction Hose Set (E) is clogged.
V-packing (upper, 2-45/3-46 or
lower, 2-49/3-54) is worn or
damaged,
V-packing (upper, 2-45/3-46 or
lower, 2-49 / 3-54) is installed in the
incorrect direction.
V-packing (upper, 2-45/3-46) is
over tightened or loose.
V-packing (lower, 2-49/3-54) is
over tightened or loose.
Pump frozen (supplied air contains
too much moisture).
Ball (upper, 2-51/3-55 or lower,
2-57/3-60) sticks on valve.
Valve Holder Set (2-53/3-56) or
Valve Adaptor Set (2-58/3-61) is
worn or damaged or paint is built
up.
Fluid or air passage inside pump is
clogged.
Nozzle tip or filter on spray gun is
clogged.
Fluid contains air.
Air leaks from air motor of pump.
(Not exhausting air)
-1-
Solutions
Check air compressor and hoses.
Check emergency valve.
Increase supplied air pressure.
Increase air pressure at Air
Regulator (C).
Loosen Wet Cup (2-42/3-40) *1 or
Valve Holder Nut (2-47/3-50). *2
Replace parts. *2
Reassemble air motor. *2
Eliminate air moisture by using a
dryer or water trap.
Clean.
Reassemble. *2
Increase supplied air pressure.
Increase pump operating air
pressure at Air Regulator (C).
Clean or replace.
Clean or replace.
Replace. *2
Reassemble. *2
Loosen or tighten Wet Cup
(2-42/3-40). *1
Loose or tighten Valve Holder Nut
(2-47/3-50). *2
Eliminate air moisture by using a
dryer or water trap.
Clean. *2
Replace or clean. *2
Clean.
Clean or replace. See instruction
manual of spray gun.
See No.3 on next page.
See No.6 on next page.
No.
3
4
5
Problems
Paint contains air.
Pulsation or variance within
spray pattern.
Paint leaks from fluid hose or
joint.
Paint leaks from the Wet Cup
(2-42/3-40).
Paint leaks from between
Suction Body (2-40/3-47)
and the Suction Tube
(2-54/3-58).
Paint leaks from Fluid Filter
Set (I).
6
Air leaks from air hose or
joint.
Air leaks from air motor.
Causes
Air has not been released.
Suction Hose Set (E) or Valve
Adaptor Set (2-58/3-61) is loose.
Packing (lower, 2-56/3-59) is worn.
Fluid contains air by over agitating.
Fluid pressure is too low.
Fluid Filter (6-5/7-3), Suction
Filter (8-5) or spray gun filter is
clogged.
Valve Holder Set (2-53/3-56) or
Valve Adaptor Set (2-58/3-61) is
worn or damaged or paint is built
up.
V-packing (lower, 2-49/3-54) is
loose.
Exhaust hole of pump is blocked.
Nozzle tip is worn or orifice size is
too large.
Fluid or air is leaking.
Fluid hose or joint is loose or
damaged.
Paint builds up on seat of fluid joint.
Wet Cup (2-42/3-40) is loose.
V-packing (upper, 2-45/3-46) is
worn or damaged.
Suction Tube (2-54/3-58) is loose.
Packing (upper, 2-52/3-57) is worn
or damaged.
Cylinder (6-2/7-1) is loose.
Packing (6-6) or O-ring (7-5) is
worn or damaged.
Air hose or fitting is loose or
damaged.
O-ring (2-16/2-20/3-5/3-26) is worn
or damaged.
Packing (2-34/3-2) is worn or
damaged.
Pipe Nut (2-9) is loose or Sleeve
(2-10) is worn or damaged.
-2-
Remedies
Refer to 5-2. Preparing spraying
procedure on page 13.
Tighten.
Replace. *2
Adjust agitator.
Increase fluid pressure at Air
Regulator (C).
Clean or replace.
Replace or clean. *2
Tighten. *2
Clean.
Replace or choose smaller orifice
size. *3
Find leak and fix.
Tighten or replace.
Clean or replace.
Tighten. *1
Replace. *2
Tighten. *2
Replace. *2
Tighten.
Replace.
Tighten or replace.
Replace. *2
Replace. *2
Tighten or replace.
13:1. Pump Unit
1-1
1-2
1-3
1-5
MSU-114N (Wall Mount)
1-6
1-7
MSU-111N (Stand Mount)
No.
1-1
1-2
1-3
1-4
Description
Plunger pump, PP-7131N
Air regulator set
Circulation valve set
Fluid filter set (option, not shown)
MSU-113N (Cart Mount)
Qty
1
1
1
1
No.
1-5
1-6
1-7
-3-
Description
Suction hose set
Stand set
Cart set
Qty
4
4
1
17:1 Pump Unit
1-1
1-2
1-4
1-5
MSU-324N (Wall Mount)
1-7
MSU-323N (Cart Mount)
No.
1-1
1-2
1-4
1-5
1-7
Description
Plunger pump, PP-1171CNE
Air regulator set
Fluid filter set
Suction hose set
Cart set
Qty
1
1
1
1
1
-4-
Plunger pump (13:1), PP-7131N
-5-
Plunger pump (13:1), PP-7131N
■
■
■
■
■
■
No.
2-1
2-2
2-3
2-4
2-5
2-6
2-7
2-8
2-9
2-10
2-11
2-12
2-13
2-14
2-15
2-16
2-17
2-18
2-19
2-20
2-21
2-22
2-23
2-24
2-25
2-26
2-27
2-28
2-29
2-30
2-31
2-32
Description
Air cylinder
Cap nut
Piston washer
Piston packing
Washer
O-ring
Air motor rod
Air pipe joint
Pipe nut
Joint nut sleeve
Air pipe
Snap ring
Washer
Rod packing
Rod guide
O-ring
Switch block
Block guide plate
Seat block
O-ring
Elbow joint
Exhaust muffler
Muffler cover
Screw
Spring washer
Bolt
Air motor body
Split pin
Adaptor
Screw
Block holder
Interlock piece
Qty
1
1
2
1
1
1
1
1
1
1
1
2
2
2
1
1
1
1
1
2
1
1
1
1
1
4
1
1
1
2
1
2
■
▲
▲
▲
▲
▲
▲
▲
▲
▲
▲
▲
*Repair service kit of air motor section includes “■” marked parts.
*Repair service kit of suction section includes “▲” marked parts.
-6-
No.
2-33
2-34
2-35
2-36
2-37
2-38
2-39
2-40
2-41
2-42
2-43
2-44
2-45
2-46
2-47
2-48
2-49
2-50
2-51
2-52
2-53
2-54
2-55
2-56
2-57
2-58
2-59
2-60
2-61
2-62
2-63
2-64
2-65
Description
Interlock end piece
Packing
Spring
Cap nut
Connecting rod
Spring washer
Nut
Suction body
Rod
Wet cup
Sleeve
V-packing female adaptor (upper)
V-packing (upper)
V-packing male adaptor (upper)
Valve holder nut
V-packing male adaptor (lower)
V-packing (lower)
V-packing female adaptor (lower)
Ball (upper)
Packing (upper)
Valve holder set
Suction tube
Pin
Packing (lower)
Ball (lower)
Valve adaptor set
Fluid outlet joint (not shown)
Grounding wire (not shown)
Pop-off valve
Tee joint
Push-in elbow
Guard spring
Wet cup tool (not shown)
Qty
2
2
2
2
3
3
3
1
1
1
1
1
4
1
1
1
4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
10-3. Plunger pump (17:1), PP-1171CNE
-7-
10-3. Plunger pump (17:1), PP-1171CNE
■
■
■
■
■
■
■
No.
3-1
3-2
3-3
3-4
3-5
3-6
3-7
3-8
3-9
3-10
3-11
3-12
3-13
3-14
3-15
3-16
3-17
3-18
3-19
3-20
3-21
3-22
3-23
3-24
3-25
3-26
3-27
3-28
3-29
3-30
3-31
3-32
3-33
3-34
3-35
Description
Handle
Packing
Nut
Head bolt
O-ring
Air cylinder
Changeover body
Pin
Changeover pin
Spring
Spring holder
Changeover bar
Nut
Washer
Changeover rod
Piston o-ring
Exhaust packing
Air piston
Screw
Changeover bar stay
Reinforce plate
Valve shaft
Piston rod
Split pin
O-ring
O-ring
Stopper
Washer
Spring washer
Bolt
Air motor body
Baffle plate
Muffler
Tapping screw
Exhaust cover
Qty
1
1
2
1
1
1
1
2
2
2
2
1
2
1
1
1
2
1
2
2
2
2
1
1
1
1
1
4
4
4
1
1
1
6
1
*Repair service kit of air motor section includes “■” marked parts.
*Repair service kit of suction section includes “▲” marked parts.
-8-
▲
▲
▲
▲
▲
▲
▲
▲
▲
▲
▲
▲
No.
3-36
3-37
3-38
3-39
3-40
3-41
3-42
3-43
3-44
3-45
3-46
3-47
3-48
3-49
3-50
3-51
3-52
3-53
3-54
3-55
3-56
3-57
3-58
3-59
3-60
3-61
3-62
3-63
3-64
3-65
3-66
3-67
3-68
3-69
3-70
Description
Metal
Stop ring
Adaptor
Rod
Wet cup
Slide ring
V-packing female adaptor (upper)
Spacer
V-packing male adaptor (upper)
Connecting rod
V-packing (upper)
Suction body
Spring washer
Nut
Valve holder nut
V-packing male adaptor (lower)
Spacer
V-packing female adaptor (lower)
V-packing (lower)
Ball (upper)
Valve holder set
Packing (upper)
Suction tube
Packing (lower)
Ball (lower)
Valve adaptor set
Pin
Pin
Pop-off valve
Tee joint
Push-in elbow
Guard spring
Grounding wire (not shown)
Fluid outlet joint (not shown)
Wet cup tool (not shown)
Qty
1
1
1
1
1
1
1
1
1
3
4
1
3
3
1
1
1
1
4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Air regulator set
No.
4-1
4-2
4-3
4-4
4-5
4-6
4-7
4-8
4-9
4-10
4-11
4-12
Description
Pump base
Push-in elbow
3-way ball valve
Nipple
Air regulator
Tee joint
Nipple
Air filter regulator
Elbow joint
Pressure gauge
Bolt
Nut
Qty
1
1
1
1
1
2
1
1
2
2
2
2
No.
5-1
5-2
5-3
5-4
5-5
5-6
Description
Elbow joint
Tee joint
Nipple
2-way ball valve
Hose joint
Swivel joint
Qty
1
1
1
1
1
1
Circulation valve set for 13:1 pump unit
-9-
Fluid filter set for 13:1 pump unit (option)
No.
6-1
6-2
6-3
6-4
6-5
6-6
6-7
6-8
6-9
6-10
6-11
6-12
6-13
6-14
6-15
6-16
6-17
Description
Filter plug
Cylinder
Cap nut
Filter bolt
Filter 100mesh
Packing
Packing
Filter body
Swivel joint
Spring pin
Filter adaptor
Elbow joint
Nipple
Elbow joint
2-way ball valve
Hose joint
Locking nut
Qty
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
No.
7-1
7-2
7-3
7-4
7-5
7-6
7-7
7-8
7-9
7-10
7-11
Description
Cylinder
Cap nut
Filter 100mesh
Filter bolt
O-ring
Filter body
Swivel joint
Nipple
Nipple
2-way ball valve
Hose joint
Qty
1
1
1
1
1
1
1
1
1
1
1
Fluid filter set, TF-8N for 17:1 pump unit
- 10 -
Suction hose set
No.
8-1
8-2
8-3
8-4
8-5
8-6
8-7
- 11 -
Description
Suction Hose
Circulation Tube
Filter Set
Filter Cover
Filter 50mesh
Filter 100mesh (Option)
Filter Spring
Qty
1
1
1
1
1
1
1