Graco 237282 Operation manual

Instructions – Parts List
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
Copyright 1988, Graco Inc. is registered to I.S. EN ISO 9001
17:1 RATIO, WALL MOUNT
Senator Pumps
For Airless and Air–Assisted Applications
Part No. 237282, Series B
For ambient temperature spray applications.
1700 psi (117 bar, 11.7 MPa) Maximum Fluid
Working Pressure
100 psi (7 bar, 700 kPa) Maximum Air Input Pressure
307933M
4393B
Model 237282 Shown
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
See page 2 for Table of Contents.
Parts

2 307933
Table of Contents
Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation/Maintenance 14. . . . . . . . . . . . . . . . . . . . . . . .
Parts 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mounting Hole Layout 20. . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warranty 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Information 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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.
DThis equipment is for professional use only.
DRead all instruction manuals, tags, and labels before operating the equipment.
DUse the equipment only for its intended purpose. If you are not sure, call your Graco distributor.
DDo not alter or modify this equipment.
DCheck equipment daily. Repair or replace worn or damaged parts immediately.
DDo not exceed the maximum working pressure of the lowest rated system component. Refer to the
Technical Data on page 21 for the maximum working pressure of this equipment.
DUse 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.
DDo not use hoses to pull equipment.
DRoute hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose
Graco hoses to temperatures above 180_F (82_C) or below –40_F (–40_C).
DWear hearing protection when operating this equipment.
DDo not lift pressurized equipment.
DComply with all applicable local, state, and national fire, electrical, and safety regulations.

3307933
WARNING
SKIN INJECTION HAZARD
Spray from the gun, leaks or ruptured components can inject fluid into your body and cause extremely
serious injury, including the need for amputation. Fluid splashed in the eyes or on the skin can also
cause serious injury.
DFluid injected into the skin might look like just a cut, but it is a serious injury. Get immediate surgi-
cal treatment.
DDo not point the gun at anyone or at any part of the body.
DDo not put your hand or fingers over the spray tip.
DDo not stop or deflect leaks with your hand, body, glove or rag.
DDo not “blow back” fluid; this is not an air spray system.
DAlways have the tip guard and the trigger guard on the gun when spraying.
DCheck the gun diffuser operation weekly. Refer to the gun manual.
DBe sure the gun trigger safety operates before spraying.
DLock the gun trigger safety when you stop spraying.
DFollow the Pressure Relief Procedure on page 14 if the spray tip clogs and before cleaning,
checking or servicing the equipment.
DTighten all fluid connections before operating the equipment.
DCheck the hoses, tubes, and couplings daily. Replace worn or damaged parts immediately.
Do not repair high pressure couplings; you must replace the entire hose.
DUse only Graco approved hoses. Do not remove the spring guard that is used to help protect the
hose from rupture caused by kinks or bends near the couplings.
MOVING PARTS HAZARD
Moving parts, such as the air motor piston, can pinch or amputate your fingers.
DKeep clear of all moving parts when starting or operating the pump.
DBefore servicing the equipment, follow the Pressure Relief Procedure on page 14 to prevent the
equipment from starting unexpectedly.

4 307933
WARNING
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.
DGround the equipment and the object being sprayed. Refer to Grounding on page 5.
DIf 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.
DProvide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid
being sprayed.
DKeep the spray area free of debris, including solvent, rags, and gasoline.
DElectrically disconnect all equipment in the spray area.
DExtinguish all open flames or pilot lights in the spray area.
DDo not smoke in the spray area.
DDo not turn on or off any light switch in the spray area while operating or if fumes are present.
DDo not operate a gasoline engine in the spray area.
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.
DKnow the specific hazards of the fluid you are using.
DStore hazardous fluid in an approved container. Dispose of hazardous fluid according to all local,
state and national guidelines.
DAlways wear protective eyewear, gloves, clothing and respirator as recommended by the fluid and
solvent manufacturer.

5307933
Installation
General Information
NOTE: Reference numbers and letters in parentheses
in the text refer to the callouts in the figures and the
parts drawing.
NOTE: Always use Genuine Graco Parts and Acces-
sories, available from your Graco distributor. Refer to
Product Data Sheet for your pump, Form No. 305790.
If you supply your own accessories, be sure they are
adequately sized and pressure rated for your system.
NOTE: Fig. 2 is only a guide for selecting and installing
system components and accessories. Contact your
Graco distributor for assistance in designing a system
to suit your particular needs.
Grounding
WARNING
FIRE AND EXPLOSION HAZARD
Before operating the pump, ground the
system as explained below. Also read
the section FIRE OR EXPLOSION HAZ-
ARD on page 4.
1. Pump: use a ground wire and clamp (supplied).
See Fig. 1. Loosen the grounding lug locknut (W)
and washer (X). Insert one end of a 1.5 mm@(12
ga) minimum ground wire (39) into the slot in lug
(Z) and tighten the locknut securely. Connect the
other end of the wire to a true earth ground.
Fig. 1
W
X
39
Z
0864
2. Air and fluid hoses: use only electrically conductive
hoses.
3. Heaters, if used: refer to Viscon HP Heater manu-
al, 309524.
4. Air compressor: follow manufacturer’s recommen-
dations.
5. Spray gun: ground through connection to a prop-
erly grounded fluid hose and pump.
6. Fluid supply container: follow your local code.
7. Object being sprayed: follow your local code.
8. Solvent pails used when flushing: follow your local
code. Use only metal pails, which are conductive,
placed on a grounded surface. Do not place the
pail on a nonconductive surface, such as paper or
cardboard, which interrupts the grounding continu-
ity.
9. To maintain grounding continuity when flushing or
relieving pressure, hold a metal part of the spray
gun firmly to the side of a grounded metal pail,
then trigger the gun.

6 307933
Installation
Supplied Components
Refer to Fig. 2 for a typical installation of an air-
assisted system.
WARNING
A red-handled bleed-type master air valve (42) and
a fluid drain valve (4) are supplied in your system.
These accessories help reduce the risk of serious
injury, including fluid injection and splashing of fluid
in the eyes or on the skin, and injury from moving
parts if you are adjusting or repairing the pump.
The red-handled bleed-type master air valve re-
lieves air trapped between this valve and the pump
after the air is shut off. Trapped air can cause the
pump to cycle unexpectedly. Locate the valve close
to the pump.
The fluid drain valve assists in relieving fluid pres-
sure in the displacement pump, hose, and gun.
Triggering the gun to relieve pressure may not be
sufficient.
DThe red-handled bleed-type master air valve
(42) is required in your system to relieve air trapped
between it and the air motor when the valve is
closed (see the WARNING above). Be sure the
bleed valve is easily accessible from the pump, and
is located downstream from the air regulator.
DThe air regulator (2) controls pump speed and
outlet pressure by adjusting the air pressure to the
pump. Locate the regulator close to the pump, but
upstream from the red-handled bleed-type master
air valve (42).
DThe air manifold (43) has a swivel air inlet. It
mounts to the cart, and provides ports for connect-
ing lines to air-powered accessories.
DThe fluid filter (5) includes a 60 mesh (250 mi-
cron) stainless steel element to filter particles from
the fluid as it leaves the pump.
DThe fluid drain valve (4) is required in your sys-
tem to relieve fluid pressure in the hose and gun
(see the WARNING above).
DThe suction hose (16) and tube (17) allow the
pump to draw fluid from a 200 liter (55 gallon) pail.
System Accessories
Air and Fluid Hoses
Be sure all air hoses (B, K) and fluid hoses (G) are
properly sized and pressure-rated for your system.
Use only electrically conductive hoses.
1. Connect one end of the fluid line (G) to the filter
outlet swivel. Connect a fluid hose to each gun (H).
Install a fluid shutoff valve (P) at each gun drop.
Do not install the spray tip in the gun yet.
2. Close the red-handled bleed valve (42) and air
regulator (2). Connect the air hose (B) to the
swivel inlet of the air manifold (J). In air-assisted
systems, connect an air supply line (K) with regula-
tor (L) and shutoff valve (M) to the air inlet of each
gun.
Air Line Accessories
1. Install an air line filter (A) in the main air line, to
remove harmful dirt and moisture from the com-
pressed air supply.
2. Install a second bleed valve (Q) in the main air
line, to isolate the accessories for servicing.
3. Install a drain valve (W) at the bottom of each air
line drop, to drain off moisture.
4. To provide automatic lubrication of the air motor,
install an air line lubricator (C) downstream from
the red-handled bleed-type master air valve (42).
5. Install a pump runaway valve (F). The runaway
valve will automatically shut off the air to the pump
if the pump starts running too fast. A pump that
runs too fast can be seriously damaged.

7307933
Installation
B
E
42
2
G
H
43
39
1
3
4
5
16
17
C
F
N
L
M
K
J
Fig. 2
G
G
A
A
D
DD
KEY
SUPPLIED COMPONENTS
1Pump
2Pump Air Regulator
3Pump Wall Bracket
4Fluid Drain Valve (required)
5Fluid Filter
16 Suction Hose
17 Suction Tube
39 Ground Wire (required; see page 5 for installation instructions)
42 Red Handled Bleed-Type Master Air Valve (required, for pump)
43 Air Manifold
ACCESSORIES YOU MUST SUPPLY
AElectrically Conductive Air Hose
BAir Line Filter
CBleed-Type Master Air Valve (for accessories)
DAir Line Drain Valve
EAir Line Lubricator
FPump Runaway Valve
GElectrically Conductive Fluid Line
HAir-Assisted Spray Gun
JFluid Shutoff Valve
KElectrically Conductive Gun Air Hose
LGun Air Regulator
MGun Air Shutoff Valve
NFluid Pressure Relief Valve (required in low pressure
air-assisted systems)
H
L
M
K
J
N
G
G
04396B

8 307933
Installation
Model 237282 (for Ambient Temperature
Spray Applications)
NOTE: Refer to page 9 to convert Pump Model
237282 to a heated system.
1. Mount the pump wall bracket (3) 5 ft (1.5 m) above
the floor. Be sure the wall is strong enough to
support the weight of the pump and accessories,
fluid, hoses, and stress caused during pump
operation. Refer to Mounting Hole Layout on
page 20.
2. Connect the air and fluid hoses and the spray gun
as explained on page 6.
Fig. 3
Model 237282 Shown
3
4393B

9307933
Installation
Converting to a Heated System
To convert Model 237282 to a heated circulating
system, order the following parts. The heaters are
available in three voltages. Specify which voltage you
desire.
DTwo Viscon HP Fluid Heaters
– Model 245848 (120 V, single-phase, 19.2 amp)
– Model 245863 (240 V, single-phase, 16.7 amp)
– Model 245864 (480 V, single-phase, 8.30 amp)
DPart No. 502265, Bushing, reducer, pipe; qty 1
See Fig. 4.
DDual Heater Mounting Kit 222311
DCirculating Kit 222312
WARNING
The Viscon HP Heaters must be installed by a
qualified electrician in compliance with all state and
local codes and regulations, to reduce the risk of
electric shock or other serious injury during installa-
tion or operation.
The power supply must match the heaters’ require-
ments (see above). Refer to the Viscon HP Heater
Manual, 309524, for further information.
Fig. 4
R
Viscon HP Heater Cord 110160
12 gauge, rated at 105_C.
WARNING
Do not use in hazardous areas containing flam-
mable materials or fumes.
Airless Insulated Hose Kit 222263
25 ft. (7.6 m) nylon fluid hose for use with airless
heated systems. Includes an in-line fluid filter, circulat-
ing manifold, and 3 ft. (0.9 m) whip hose.
Air-Assisted Insulated Hose Kit 222264
25 ft. (7.6 m) nylon fluid hose for use with air-assisted
heated circulating systems. Includes an in-line fluid
filter, circulating manifold, 3 ft. (0.9 m) whip hose, and
air supply hose for spray gun.
Installing Dual Heater Mounting Kit 222311
WARNING
Before installing the heaters, dual heater mounting
kit and circulating kit, follow the Pressure Relief
Procedure on page 14. Disconnect all hoses from
the pump.
NOTE: Reference numbers marked with an asterisk
(for example, 18*) are included in kit 222311.
Apply pipe sealant (28*) to all male threads except at
swivel connections.
1. Be sure the wall is strong enough to support the
weight of the heaters, hoses, fluid, and stress
caused during operation. Locate the holes for the
heater wall brackets (18*) exactly as indicated on
page 20. Note that one heater will be mounted
above and slightly to the left of the other. Use the
heater wall brackets as templates to mark the wall.
2. Attach a heater wall bracket to each heater’s
mounting posts with the M8 x 1.25 screws and
lockwashers supplied with the heater (35).
3. Use M8 or 5/16 in. bolts of the appropriate length
and lockwashers (not supplied) to fasten the
heater brackets to the wall.
4. Remove the fluid filter (5) and long nipple (7) from
the pump fluid outlet. Do not remove the bushing
(9). Discard the nipple (7). See Fig. 5.

10 307933
Installation
5. Screw the street elbow (20*) into the bushing (9) at
the pump’s fluid outlet. Assemble the 3/4 npt
nipple (19*), check valve (21*), coupling (22*), and
swivel (51*) as shown in Fig. 6. The arrow on the
check valve must point down, toward the coupling.
Connect the street elbow (20*) to the nipple (19*).
6. Screw an elbow (24*) into the lower heater’s inlet.
Attach the heater hose (23*) to the elbow. Connect
the other end of the hose to the swivel (51*) com-
ing from the pump outlet.
7. Screw an elbow (24*) into the upper heater’s inlet.
Attach the second heater hose (23*) to the elbow.
Run this hose to the left of and behind the lower
heater.
8. Install a 3/8 npt nipple (25*) in the lower heater’s
outlet. Screw the rigid end of the union (26*) onto
this nipple, and screw the swivel end of the union
onto the free end of the second heater hose (23*).
9. Screw a 3/8 npt nipple (25*) into the upper heater’s
outlet. Screw the fluid filter (5) inlet onto this
nipple. Unscrew the adapter (6) from the filter
outlet. Screw the reducing nipple (27*) into the
filter outlet, and screw the union (26*) onto the
nipple. See Fig. 6.
3
1
7
5
6
4
8
17
Model 237282 Shown
Fig. 5
14
16
9
04395B

11307933
Installation
Installing Circulating Kit 222312
WARNING
Before installing the heaters, dual heater mounting
kit and circulating kit, follow the Pressure Relief
Procedure on page 14. Disconnect all hoses from
the pump.
NOTE: Reference numbers marked with a symbol (for
example, 29{) are included in kit 222312.
Apply pipe sealant (28{) to all male threads except at
swivel connections.
1. Remove the suction tube (17), fittings (52 and 53),
hose (16), and adapter (14). See Fig. 5. Keep
these parts for use later.
2. Screw nipple (54) and then the tee (49{) into the
elbow (8) at the pump fluid inlet. Connect the
adapter (14), suction hose (16), fittings (52 and
53), and tube (17) to the tee. Screw the 1 x 3/4 npt
bushing (55) and then the 3/4 npt x 1/4 npt bush-
ing (50{) into the branch of the tee. See Fig. 6.
3. Install the CIRC end of the three-way ball valve
(32{) in the bushing (50{). Screw a bushing (31{)
onto the IN branch of the three-way valve. Con-
nect the rigid end of the 45_union (30{) to this
bushing. Screw the swivel end of the union (30{)
onto the braided hose (29{). Connect this hose to
the main fluid return line. See Fig. 6.
4. Screw another bushing (31{) onto the DRAIN end
of the three-way valve (32{). Connect the nylon
fluid hose (33{) to this bushing, and connect the
return tube (34{) to the other end of the hose.
Place the return tube in the fluid supply container.
5. Connect the air and fluid hoses and the spray gun
as explained on page 6.

12 307933
Installation
04398B
3
5
18*
18*
20* 23*
24*
24*
23*
25*
25*
26*
30{
{31
31{32{
33{
{34
9
1
Fig. 6
1
3
2
Specify desired heater voltage. See page 9.
35
35
Part of heater (35).
Arrow must point down.
1
1
2
2
3
19*
21*
*22
*51
*23
23{
26
27*
50{
17
16
49{
14
29{
4
5
Connect to the main fluid supply line to the guns.
Connect to the main fluid return line.
4
5
B
B
C
C
55
54
52
53
51*
23*
51*
51*
51*

13307933
Notes

4393B
Model 237282 Shown
Fig. 7
U
1Torque to 136–149 N.m (100–110 ft-lb).
1
14 307933
Operation/Maintenance
Pressure Relief Procedure
WARNING
SKIN INJECTION HAZARD
The system pressure must be manually
relieved to prevent the system from
starting or spraying accidentally. Fluid
under high pressure can be injected through the
skin and cause serious injury. To reduce the risk of
an injury from injection, splashing fluid, or moving
parts, follow the Pressure Relief Procedure
whenever you:
Dare instructed to relieve the pressure,
Dstop spraying,
Dcheck or service any of the system equipment,
Dor install or clean the spray tips.
1. Lock the gun trigger safety.
2. Shut off the air supply to the pump.
3. Close the bleed-type master air valve (required in
your system).
4. Unlock the gun trigger safety.
5. Hold a metal part of the gun firmly to the side of a
grounded metal pail, and trigger the gun to relieve
pressure.
6. Lock the gun trigger safety.
7. Open the drain valve (required in your system),
having a container ready to catch the drainage.
8. Leave the drain valve open until you are ready to
spray again.
If you suspect that the spray tip or hose is completely
clogged, or that pressure has not been fully relieved
after following the steps above, very slowly loosen the
tip guard retaining nut or hose end coupling and relieve
pressure gradually, then loosen completely. Now clear
the tip or hose.
Packing Nut/Wet-Cup
Before starting, fill the packing nut (U) 1/3 full with
Graco Throat Seal Liquid (TSL) or compatible solvent.
See Fig. 7.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure at left.
The packing nut is torqued at the factory and is ready
for operation. If it becomes loose and there is leaking
from the throat packings, relieve pressure, then torque
the nut to 136–149 N.m (100–110 ft-lb) using the
supplied wrench. Do this whenever necessary. Do not
overtighten the packing nut.
Flush the Pump Before First Use
Pumps are tested with lightweight oil which is left in to
protect the pump parts. To prevent contamination of
the fluid, flush the pump with a compatible solvent
before using it.

15307933
Operation/Maintenance
Starting and Adjusting the Pump
1. Be sure the air regulator and bleed-type master air
valve are closed.
NOTE: Do not install the spray tip yet!
2. Open the bleed-type master air valve.
3. Hold a metal part of the spray gun firmly to the
side of a grounded metal pail and trigger the gun.
4. Slowly open the air regulator until the pump starts.
5. Allow the pump to cycle slowly until all the air is
pushed out of the fluid lines.
6. Release the gun trigger and lock the trigger safety;
the pump will stall against the pressure.
7. With the pump and lines primed, and with ade-
quate air pressure and volume supplied, the pump
will start and stop as the spray gun is triggered and
released.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 14.
8. Relieve the pressure, then install the spray tip in
the gun.
9. Use the air regulator to control the pump speed
and fluid pressure. Always use the lowest pressure
necessary to achieve the desired results. Higher
pressures waste fluid and cause premature wear
of the pump packings and spray tip.
CAUTION
Do not allow the pump to run dry. It will quickly
accelerate to a high speed, causing damage. If your
pump is running too fast, stop it immediately and
check the fluid supply. If the container is empty and
air has been pumped into the lines, refill the con-
tainer and prime the pump and the lines, or flush and
leave it filled with a compatible solvent. Eliminate all
air from the fluid system.
Heated Circulating Systems
Operating instructions for a heated circulating system
are provided in the Viscon HP Heater manual, 309524.
Read and understand all warnings and instructions in
the heater manual before operating a heated system.
1. The three-way ball valve (32) selects either fluid
circulation or draining. To circulate fluid back to the
pump, turn the handle toward the CIRC end of the
valve.
2. To drain the fluid, turn the handle toward the
DRAIN end.

16 307933
Operation/Maintenance
Shutdown and Care of the Pump
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 14.
For overnight shutdown, stop the pump at the bottom
of its stroke to prevent fluid from drying on the ex-
posed displacement rod and damaging the throat
packings. Relieve the pressure.
Always flush the pump before the fluid dries on the
displacement rod. See Flushing below.
Flushing
WARNING
FIRE AND EXPLOSION HAZARD
Before flushing, read the section FIRE
OR EXPLOSION HAZARD on page 4.
Be sure the entire system and flushing
pails are properly grounded. Refer to
Grounding on page 5.
Flush with a fluid that is compatible with the fluid you
are pumping and with the wetted parts in your system.
Check with your fluid manufacturer or supplier for
recommended flushing fluids and flushing frequency.
Always flush the pump before fluid dries on the dis-
placement rod.
CAUTION
Never leave water or water-base fluid in the pump
overnight. If you are pumping water-base fluid, flush
with water first, then with a rust inhibitor such as
mineral spirits. Relieve the pressure, but leave the
rust inhibitor in the pump to protect the parts from
corrosion.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 14.
1. Relieve the pressure.
2. Remove the spray tip from the gun.
3. Hold a metal part of the gun firmly to the side of a
grounded metal pail.
4. Start the pump. Always use the lowest possible
fluid pressure when flushing.
5. Trigger the gun.
6. Flush the system until clear solvent flows from the
gun.
7. Relieve the pressure.

04394B
1
34
5
6
7
911
13
14
16
17
8
38
37
36
5Part of the wall bracket (3).
5
4See the Air Regulator Detail.
4
11
43
44
45
2
46
42
47
4838
AIR REGULATOR DETAIL
11
A
A
39
53
52
17307933
Parts
Model 237282, Series B
Ref
No. Part No. Description Qty
1 245166 17:1 SENATOR PUMP
See manual 309340 1
2 206197 AIR REGULATOR
See manual 308168 1
3 206294 BRACKET, wall, pump 1
4 210658 DRAIN VALVE; 3/8 npt(mbe)
See manual 306861 1
5 218029 FLUID FILTER
See manual 307273 1
6 157705 ADAPTER, 1/4 npt(m) x
3/8 npsm(f) swivel 1
7 166606 NIPPLE, reducing; 3/4 npt x 3/8 npt 1
8 116401 ELBOW, street, 90_; (f) 1 11–1/2 x 1–1/4
11–1/2 (f); zinc-plated malleable iron 1
9 158586 BUSHING, 3/4 x 1 npt 1
11 100509 PLUG, pipe, sq hd; 1/4 npt 4
13 150286 ADAPTER; 3/8 npt (m x f) 1
14 116402 ADAPTER; (f) 1 11–1/2 x 1–1/4
11–1/2(f); zinc-plated malleable iron 1
16 244516 HOSE, siphon; nylon; 3/4 in. (19 mm) ID;
3/4 npt (mbe); 6 ft (1.8 m) long 1
17 206266 SUCTION TUBE; 3/4 npt(f) 1
36 100101 SCREW, cap, hex hd;
3/8–16 x 1 in. (25 mm) long 4
37 100133 WASHER, spring lock; 3/8 in. 4
38 100131 NUT, hex; 3/8–16 5
39 237569 GROUND WIRE 1
40 206994 THROAT SEAL LIQUID
8 oz (0.5 liters); not shown 1
42 113269 BLEED VALVE, red-handled;
1/2 npt (m x f) 1
43 206205 MANIFOLD, air; 3/4 npsm(f) 1
44 100960 GAUGE, air 1
45 100840 ELBOW, street; 90_; 1/4 npt (m x f) 1
46 100403 PLUG, pipe; 1/8 npt 1
47 214952 HOSE, air; 3/4 in. (19 mm) ID; 3/4 npt x
1/2 npt (mbe); 15 in. (381 mm) long 1
48 100322 WASHER, lock; 3/8 in. 2
52 100474 COUPLING, pipe 1
53 158555 NIPPLE, reducing; 1 npt x 3/4 npt 1

18 307933
Parts
Dual Heater Mounting Kit, Part No. 222311
Circulating Kit, Part No. 222312
Ref
No. Part No. Description Qty Ref No. Part No. Description Qty
18* 183982 BRACKET, wall, heater 2
19* 175013 NIPPLE; 3/4 npt 1
20* 166590 ELBOW, 3/4npt(m) x 3/4npt(f) 1
21* 235132 CHECK VALVE; 3/4 npt(m) x 3/4 npt(f);
includes items 21a–21e 1
21a 235133 . SEAT, valve 1
21b 111691 . O-RING; fluoroelastomer 1
21c 101190 . BALL 1
21d 181492 . GUIDE, ball 3
21e 187861 . HOUSING, valve 1
22* 158556 COUPLING, hex pipe;
1/2 npt(f) x 3/4 npt(f) 1
23* H55003 HOSE, fluid; nylon; 1/2 in. (12.7 mm) ID;
1/2 npsm(fbe); 3 ft (0.9 m) long 3
24* 158683 ELBOW, 90_; 1/2 npt (m x f) 2
25* 156849 NIPPLE; 3/8 npt 2
26* 159801 UNION, adapter, 90_;
3/8 npt(f) x 1/2 npsm(f) swivel 2
27* 165198 NIPPLE, reducing, 3/8 npt x 1/4 npt 1
28*{110110 . SEALANT, pipe; sst; 6 ml (not shown) 1
29{207296 . HOSE, fluid; PTFE tube
w/braid cover; 13/32 in. ID;
cpld 3/8 npt (mbe); 31 in. (0.8 m) long 1
30{207411 UNION, adapter, 45_;
3/8 npt(f) x 3/8 npsm(f) swivel 1
31{100176 BUSHING, hex; 1/4 npt(f) x 3/8 npt(m) 2
32{214711 BALL VALVE, three-way; 1/4 npt(m);
See manual 306861 1
33{205169 HOSE, fluid; nylon; 3/8 in. ID;
3/8 npsm (fbe); 3’ (0.9 m) long 1
34{167905 TUBE, return; 3/8 npt(m) 1
49{500566 TEE; 1 in. female 1
50{100615 BUSHING; 3/4 npt(m) x 1/4 npt(f) 1
51* 158491 NIPPLE; 1/2 npt 5
54{158585 FITTING, nipple 1
55{158586 BUSHING; 1 npt(m) x 3/4 npt(f) 1
* Included in Dual Heater Mounting Kit 222311. Required to
convert Model 237282 Sprayer to a heated unit. The
heaters are not included in this kit and must be ordered
separately, by desired voltage (see page 9).
{Included in Circulating Kit 222312. Required to convert
Model 237282 Sprayer to a circulating unit.

19307933
Parts
Dual Heater Mounting Kit, Part No. 222311
Circulating Kit, Part No. 222312
4397B
18*
*19
*20
*22
*23
24*
27*
26*
24*
23*
25*
25*
30{
31{
32{
33{
34{
1See the Check Valve Detail.
*21
2Connects to the gun fluid supply line.
51*
23* (Ref)
2
1
31{
29{
3
B
B
C
C
50{
49{
*51
55{
54{
3Connects to the fluid return line.
21a
21b
21c
21d
21e
CHECK VALVE DETAIL
26*
5 (Ref)
51*
51*
23* (Ref)
51*
23*

20 307933
Mounting Hole Layout
7.375 in.
(187 mm)
12.375 in.
(314 mm) 15 in.
(381 mm)
8.5 in.
(216 mm)
6 in.
(152 mm)
5 in.
(127 mm)
7/16 in. diameter holes for pump wall
bracket (mount 5 ft [1.5 m] above floor;
refer to 306783 for instructions).
M8 or 5/16 in. diameter holes for
heater wall brackets (or use brackets
as templates to mark wall).
6 in.
(152 mm)