OPERATOR’S
MANUAL
INCLUDING: OPERATION, INSTALLATION & MAINTENANCE
STAINLESS STEEL FLUID HEATER
651747-X-B
RELEASED: 6-28-92
REVISED: 7-16-01
(REV.
G)
READ THIS MANUAL CAREFULL
It
is the responsibility of the employer to place this information in the hands of the operator
FLUID
Models 651747ĆXĆB.........................
Wetted Parts Material Stainless Steel..............
Volts AC 651747Ć1ĆB 120............
651747Ć2ĆB 230 / 240............
651747Ć3ĆB 415 / 440............
Amperes 651747Ć1ĆB 16.6............
651747Ć2ĆB 8.3............
651747Ć3ĆB 4.5............
Watts 2000...........................
Accuracy ±3Ć1/2_ F (1.9_ C)........................
Temperature Rise Above Ambient 100_ F (38_ C).....
Recovery Rate per Hour 15 gallons (56.8 liters)............
Maximum Working Pressure 5000 p.s.i. (35 MPa).........
Maximum Temperature Range 60Ć250_ F(16Ć121_ C).......
Surface Temperature Code T3 (392_ F/200_ C)..........
Fluid Passage Diameter 0.370" (9.4 mm)............
Fluid Passage Length 91.7" (232.9 cm)..............
Fluid Passage Volume 9.86 in.3(0.162 lit.)..............
Inlet / Outlet Port Size (female) 1/2 Ć 14 N.P.T.F. Ć 1.......
Weight 18 lbs (8.2 kg)..........................
HEA
TER DA
OPERA
TA
TING OR SER
1/2 Ć 14 N.P.T.F.
Mounting holes (hidden)
Thermometer - Do not overĆ
tighten. For orientation only.
Y BEFORE INST
VICING THIS EQUIPMENT
. Keep for future reference.
DIMENSIONAL
651747ĆXĆB FLUID HEATER
7/8" (22.2 mm)
1/2 Ć 14 N.P.T.F. (Outlet)
3Ć3/4"
(95.3 mm)
ALLING,
.
DA
TA
7Ć1/2"
(190.5 mm)
4Ć3/4"
(120.7 mm)
4Ć3/16"
(105.6 mm)
16Ć1/16"
(408.0 mm)
GENERAL
The Aro stainless steel fluid heater models are wired for 120, 230 / 240
and 415 / 440 volt AC applications. The heating element is a 2000 watt
cartridge type and is thermostatically controlled. The wiring, heating
element and thermostat are protected by a preset heat limiter.
The thermostat is adjustable up to 250_ F (121_ C). The heater is off
when the thermostat knob is turned counterclockwise as far as posĆ
sible. The heater will not switch on until the knob is rotated to at least
ambient room temperature.
Fluid heaters have been tested in a water solution. Some of this fluid
may be left within the heater, therefore flush out this fluid with a solvent
compatible with the material to be pumped.
DESCRIPTION
• This unit utilizes an explosionĆproof electrical section and internally
spiraling material section. The material enters the base under line
pressure from the pump and is heated and delivered thru to the maĆ
terial outlet at the top.
• This unit is CSA certified for Class I, Division 1, Group D, HazardĆ
ous Locations, Temperature Code (identification number) T3.
• Two or more paint heaters may be coupled together by plumbing
the material outlet of the first heater to the material inlet of the next,
etc. However, the distance of piping run between the units should
be limited to no more than three feet (see figure 4, page 4).
TYPICAL INSTALLATION
The heater inlet and outlet should be plumbed (up flow) as shown (see
figure 4, page 4), to minimize chances of trapped air inside the heater.If
the inlet and outlet are reversed (down flow), the temperature rise will
be different.
8Ć13/16"
(223.8 mm)
R
OPERATING
FIGURE 1
PRECAUTIONS
1/2 Ć 14 N.P.T.F. (Inlet)
• Heed all warnings.
WARNING Do not exceed 5000 p.s.i. (35 MPa) maximum.
WARNING HIGH PRESSURE DEVICE. Improper usage of
this equipment could result in serious injury.The possibility of
injection into the flesh is a potential hazard. Never allow any
part of the human body to come in front of, or in direct contact
with, the material outlet. An injection injury can be serious. If
injection should occur, contact a qualified physician for immeĆ
diate treatment.
CAUTION Electrical supply power to the heater must be off
during flushing operation.
CAUTION Use only genuine Aro replacement parts to asĆ
sure compatible pressure rating and longest service life.
INGERSOLL-RAND COMPANY
P.O. BOX 151 D ONE ARO CENTER D BRYAN,OHIO 43506Ć0151
&
(419) 636-4242 D F
AX (419) 633-1674
E2001 D PRINTED IN U.S.A.
POWER
SUPPL
Y AND INST
ALLATION
MAINTENANCE
NOTE: The power supply cable is not furnished with the unit and must be
supplied by the customer.
Do not use neutral as earth ground. A single phase power / earth ground
is required. If this is not available, use a transformer to obtain single phase
power.
Provisions should be made for a quick disconnect or shutĆoffof all electrical
power to this unit.
All wiring must comply with all local and / or national electrical codes.
• Electrical codes that apply must be strictly adhered to. Failure to do so
may lead to shock hazard or serious injury.
• Some local electrical codes may requirethe installation of rigid conduit.
• The installer of this system assumes full responsibility for compliance
with these codes.
• Aro is not responsible for accidents resulting from improper installation
of components or hardware.
• No electrical power should be in the system at the time the cover is reĆ
moved.
AIR
AND LUBE REQUIREMENTS
Commonly used solvents and their lowest boiling points as pertains to the
Aro free flow system:
Hydrocarbons (Petroleum Naphthas)
VM & P 244 (118)
Mineral Spirits 314 (157)
Odorless Mineral Spirits 353 (178)
Aromatics (Terpenes)
Benzene 172 (78)
Toluene 230 (110)
Xylene 281 (138)
Gum Turpentine 311 (155)
Dipentene 347 (175)
Alcohols
Methanol 147 (64)
Isobutyl Alcohol 223 (106)
Nybutyl Alcohol 241 (116)
Keytones
MEK 174 (79)
Acetone 122 (50)
Diacetone 284 (140)
k International Critical Tables (ref.)
Boiling Point _ F(_ C) k
NOTE: The (22) fluid track is a cast assembly and cannot be disassembled
for cleaning. Do not allow material to solidify inside the heater.Flush the
paint heater with the proper solvent immediately following each use.
CAUTION Shut the electrical supply off and relieve all pressure
from the system before servicing any part of the fluid heater system.
CLEANING
1. When cleaning the fluid heater, use only solvents compatible with the
material being pumped.
2. The fluid heater should be flushed withsolvent when changing medias,
or when it is not being used for a period of time.
NOTE: For other maintenance problems, see ``Trouble Shooting", page 4.
DISASSEMBLY
NOTE: The following procedure is for the repair of the (24) heater cartridge asĆ
sembly, (29) thermostat or the (23) cutoff assembly.
1. Relieve all fluid pressure in the system.
2. Rotate the (17) adjusting knob counterclockwise to the ``off" position.
3. Disconnect the power supply to the fluid heater assembly.
4. Disconnect the fluid lines.
5. Remove the six (2) cap screws.
6. Remove the (20) cover.
7. Remove the two (12) machine screws and (11) lockwashers from the
(21) housing, which retain the thermostat assembly.
8. Remove (as one unit) the (10) terminal block, (29) thermostat and (13)
mounting plate by carefully lifting it out and removing the power lead
wires (1 and 3) from the first two positions on the (10) terminal block (reĆ
fer to figure 3).
9. Remove the (24) heater cartridge assembly leadsfrom the (10) terminal
block third and fourth positions.
10. Carefully finish removing the assembly by pulling the thermostat capilĆ
lary tube out of the (22) fluid track body.
NOTE: Special care must be taken not to sharply bend or kink the capillary tube
which will ruin the thermostat. Do not use pliers or other tools which may also
damage the tube.
11. Remove the (28) indicator lamp leads from the (10) terminal block third
and fourth positions.
12. Unscrew the (15) site plug to remove the (28) indicator lamp from the
assembly.
13. Remove the(23) cutoff assembly leads fromthe (10) terminal blocksecĆ
ond and fourth positions. Carefully remove the (23) cutoff assembly
from the (22) fluid track.
OPERATING INSTRUCTIONS
STARTĆUP PROCEDURE
1. Fill the system with fluid.
2. Circulate the fluid thru the system.
CAUTION Power should never be on when there is only solvent
in the system. Solvents can expand if there is no circulation, causing
excessive and hazardous pressure in the system.
3. Turn the power on.
4. Set the thermostat just below the boiling point of the lowest boiling solĆ
vent in the coating material (see table above).
5. Allow fluid to circulate thru the heater for5Ć10minutes.
6. Readjust the thermostat as necessary.
To adjust the temperature, turn the knob:
a. Clockwise - higher temperature
b. Counterclockwise - lower temperature
SHUTTING THE SYSTEM OFF
1. Allow the fluid to circulate for5Ć10minutes after shutting the heater off,
to cool the system.
2. Always leave the solvent or fluid in the heater.
PAGE 2 OF 4 651747ĆXĆB
1. Pull the (24) heater cartridge assembly from the (22) fluid track. NOTE: If the
1. Reassembly is done in the reverse order.
NOTE: Care must be taken to keep the (29) capillary tube away from the
(23) cutoff assembly.
NOTE: Whenreinstalling the (20) cover,becertain the (17)adjusting knob is
turned out. If the (18) screw is threaded in too far, it will inhibit the cover from
properly sealing flat against the housing.
2. Rotate the adjusting knob clockwise out as far as it will go and turn it
3. Apply Watt Lube to (24) heater cartridge assembly.
4. Apply Dow Corning 340 Silicone Heat Sink compound to the (29) therĆ
HEATER
(24) heater cartridge assembly does not easily come out, do the following:
a. Remove the (25) pipe plug from the bottom of the (22) fluid
track.
b. Carefully drive the (24) heater cartridge assembly out thru the
top of the heater (toward the cover).
CARTRIDGE REMOV
AL
REASSEMBLY
back in carefully to align the slots with the thermostat.
mostat probe and (23) cutoff assembly. This material increases the
overall efficiency of the devices.