Nordson Auto-Flo II User manual

Instruction Sheet
Part 1608561-02
2019 Nordson Corporation
P/N 1608561-02
Auto-FlotII Heater Block Assemblies
Description
The Auto-FloII heater block assembly is an electrically heated manifold that
mounts to the Auto-Flo II dispense valve and heats the material. Use the following
instruction sheet to install and service the heater block assembly.
Specifications
Model: Auto-Flo II Heater Block Assembly: 120 Volt
Operating Voltage: 120 V
Power Consumption: 150 watts
Cold Resistance Reading Unannealed Heaters: 81.6 to 96.0  (ohms)
Cold Resistance Reading Annealed Heaters: 86.4 to 100.8  (ohms)
Maximum Temperature 82 C (180 F)
Model: Auto−Flo II Heater Block Assembly: 120 Volt (Low Wattage)
Operating Voltage: 120 V
Power Consumption: 43 watts
Cold Resistance Reading Unannealed Heaters: 205.2 to 239.4  (ohms)
Cold Resistance Reading Annealed Heaters: 184.7 to 251.4  (ohms)
Maximum Temperature 82 C (180 F)
Model: Auto-Flo II Heater Block Assembly: 240 Volt
Operating Voltage: 240 V
Power Consumption: 147 watts
Cold Resistance Reading Unannealed Heaters: 333.06 to 391.8  (ohms)
Cold Resistance Reading Annealed Heaters: 352.6 to 411.4  (ohms)
Maximum Temperature 82 C (180 F)
Model: Auto-Flo II Heater Block Assembly: 240 Volt (Low Wattage)
Operating Voltage: 240 V
Power Consumption: 43 watts
Cold Resistance Reading Unannealed Heaters: 286.3 to 334.0  (ohms)
Cold Resistance Reading Annealed Heaters: 1145.30 to 1336.19  (ohms)
Maximum Temperature 82 C (180 F)

Auto-Flo II Heater Block Assemblies
2
Part 1608561-02 2019 Nordson Corporation
10013624
Figure 1 Heater Block Assembly Installed on the Auto-Flo II Dispense Valve
Installation
WARNING: Allow only qualified personnel to perform the following tasks. Follow
the safety instructions in this document and all other related documentation.
WARNING: System or material pressurized. Relieve pressure. Failure to observe
this warning may result in serious injury or death.
Use the following instructions to install the heater block assembly to the Auto-Flo II
dispense valve. Refer to Standalone Dispense Valve in the Specifications section
of your Auto-Flo II system manual for mounting specifications if necessary.
1. Remove and discard the screws that come with the Auto-Flo gun.
2. See Figure 2. Insert the dowel pins (3) into the heater block (4).
3. Align insulator plate (2) over dowel pins and attach to heater block (4).
4. Align the heater block to the applicable fixture (1) using the dowel pins.
5. Hold the heater block (4) in place and mount the dispense valve (5) onto
the heater block by aligning the dowel pins.
6. Install the dispense valve (5) onto the heater block and applicable fixture by
inserting the long screws (6) provided with the heater block. Tighten the
screws to 60 in.-lb (6.7 N•m).

3
Auto-Flo II Heater Block Assemblies
Part 1608561-02
2019 Nordson Corporation
10013624
1
2
3
4
56
THIS PART IS SHIPPED LOOSE WITH THE HEATER BLOCK.
Figure 2 Heater Block Assembly Installation
1. Applicable fixture (application specific)
2. Insulator plate
3. Dowel pins
4. Heater block
5. Dispense valve
6. Socket Screw, M5 x 100,
black
Operation
Operation is dependent upon the system application requirements and the material
delivery system. Refer to the applicable System Documentation that shipped with
the system for detailed operating procedures.
Repair
WARNING: Read and understand this entire section before performing repairs.
Contact a Nordson representative regarding these procedures if necessary.
Review the following:
Allow only qualified personnel to perform the following tasks. Follow the
safety instructions in this document and all other related documentation.
High pressure fluids are extremely dangerous. Do not place any part of
your body in front of a dispensing device, drain, or leak in a high pressure
system. A jet of high fluid can cause serious injury, toxic poisoning, or
death.
Relieve system and material pressure before disconnecting hoses.

Auto-Flo II Heater Block Assemblies
4
Part 1608561-02 2019 Nordson Corporation
Heater Cartridge Replacement
1. See Figure 3. Remove the screws (8) that secure the body cover (2) to the
heater block (9).
2. Disconnect the heater cartridge wires (6) from the terminal connector (5).
3. Carefully remove the heater cartridge (6) from the heater block (9).
4. Apply heat sink compound to the replacement heater cartridge.
5. Install the replacement heater cartridge (6) into the heater block. Route the
heater wires through the heater block (9) the same way as the original.
See Figure 3 for wiring diagram.
6. Install the body cover (2) onto the heater block (9) using the screws (8).
Tighten the screws to 30 in-lbs (3.39 Nm).
7. After the assembly is complete, check the circuit resistance of the heater
cartridge through the heater cartridge cordset connector pins (12). Refer to
the Specifications table.
Cordset and RTD Sensor Replacement
NOTE: The RTD sensor is contained within the cordset of the heater block
assembly. The RTD sensor is replaced by replacing the cordset.
1. See Figure 3. Remove the screws (8) that secure the body cover (2) to the
heater block (9).
2. Disconnect the cordset (1) from the terminal connector (5).
3. Remove the screw (3) and lock washer (4) that secure the cordset (1)
ground wires to the heater block (9) and set aside.
4. Remove the nut (10) and washer (11) that secure the cordset (1) to the
heater body cover (2) and set aside.
5. Remove and discard the cordset.
6. Apply heat sink compound to the replacement cordset RTD connection (7)
and connect the replacement cordset (1) to the heater block (5) the same
way as the original. See Figure 3 for wiring diagram.
7. Reinstall the screw (3) and lock washer (4) to the terminal connector (5)
8. Secure the cordset (1) tightly to the body cover (2) with nut (10) and washer
(11).
9. Install the body cover (2) onto the heater block (9) using the screws (8).
Tighten the screws to 30 in-lbs (3.39 Nm).
10. After the assembly is complete, check the circuit resistance of the heater
cartridge through the heater cartridge cordset connector pins (12). Refer to
the Specifications table.

5
Auto-Flo II Heater Block Assemblies
Part 1608561-02
2019 Nordson Corporation
10013624
120 and 240 VOLT CIRCUIT
TERMINAL
HEATER CARTRIDGE
BLOCK
CORDSET
RTD
3
4
5
6
7
10
11
8
9
8
APPLY HEAT SINK COMPOUND
120V CORDSET CONNECTOR
12
12
GROUND
LEAD
240V CORDSET CONNECTOR
12
12
GROUND
LEAD
2
1SENSOR
LEAD
SENSOR
LEAD
SENSOR
LEAD
SENSOR
LEAD
Figure 3 Cordset and RTD Sensor Replacement.
1. Cordset
2. Body cover
3. Screw, pan head, M3 x 6
4. Lock washer
5. Terminal connector
6. Heater cartridge
7. RTD connection
8. Screw, pan head, M5 x 8
9. Heater block
10. Nut
11. Washer
12. Heater cartridge cordset
connector pins

Auto-Flo II Heater Block Assemblies
6
Part 1608561-02 2019 Nordson Corporation
Parts
To order parts, call the Nordson Customer Service Center or a local Nordson
representative.
Auto-Flo II Heater Block Assemblies
See Figure 4 and the following parts list.
10013624
1
2
3
7
8
6
4
5
13
12
9
10
11
8
AUTOFLO GUN
SHOWN FOR
REFERENCE ONLY
Figure 4 Heater Block Assembly Parts

7
Auto-Flo II Heater Block Assemblies
Part 1608561-02
2019 Nordson Corporation
Item Part Part Part Part Description Quantity
— 1606151 — — — HEATER BLOCK ASSEMBLY, Auto-Flo, 120 V 1
— — 1615107 — — HEATER BLOCK ASSEMBLY, Auto-Flo, 120 V, low
wattage
1
— — — 1606152 — HEATER BLOCK ASSEMBLY, Auto-Flo, 240 V 1
— — — — 1615108 HEATER BLOCK ASSEMBLY, Auto-Flo, 240 V, low
wattage
1
1 1608885 1608886 276957 276957 KIT, cord set, automatic gun, BM 1
2−−−−−− −−−−−− −−−−−− −−−−−− COVER, body, Auto-Flo heater, standalone 1
3−−−−−− −−−−−− −−−−−− −−−−−− SCREW, socket, M5 x 100, black, class 12.9,
per ISO 21269
2
4−−−−−− −−−−−− −−−−−− −−−−−− SCREW, pan head, recessed, M3 x 6, zinc,
class 4.8, per ISO 7045
1
5−−−−−− −−−−−− −−−−−− −−−−−− LOCK WASHER, external, M3, stainless, zinc 1
6−−−−−− −−−−−− −−−−−− −−−−−− CONNECTOR, plastic, 2-station 1
7 1608711 1608764 KIT, heater cartridge, 0.50 D 1
8−−−−−− −−−−−− −−−−−− −−−−−− SCREW, pan head, cross-rec, M5 x 8, class
4.8, per ISO 7045
2
9−−−−−− −−−−−− −−−−−− −−−−−− BODY, Auto-Flo heater, standalone 1
10 −−−−−− −−−−−− −−−−−− −−−−−− DOWEL PIN, hollow, 8mm OD x 16mm LG 2
11 −−−−−− −−−−−− −−−−−− −−−−−− INSULATOR PLATE, Auto-Flo, standalone 1
12 984155 984155 984155 984155 NUT, panel mounting 1
13 −−−−−− −−−−−− −−−−−− −−−−−− WASHER, external, ⅜-in., stainless, zinc 1

Auto-Flo II Heater Block Assemblies
8
Part 1608561-02 2019 Nordson Corporation
Auto-Flo II Heater Block Assembly: In-Line Manifold
See Figure 5 and the following parts list
10015225
5
2
12
14
13
PART OF
11
ITEM 2
BOTTOM VIEW
3
4
6
7
1
5
5
4
8
9
10
AUTOFLO GUN
SHOWN FOR
REFERENCE ONLY
3
16
15
Figure 5 In-line AF Manifold Assembly

9
Auto-Flo II Heater Block Assemblies
Part 1608561-02
2019 Nordson Corporation
Item Part Part Description Quantity Note
— 1609339 — MANIFOLD, Auto−Flo, in-line, heated, 120 V 1
— — 1611704 MANIFOLD, Auto−Flo, in-line, heated, 120 V,
low wattage
1
1 1609375 1609375 BODY, manifold, Auto−Flo, in-line,
heated 1
2 1609379 1609379 CORDSET, manifold, heated, Auto−Flo,
120 V 1 A
3 1609376 1609376 PLATE, isolator, manifold, Auto−Flo,
in-line 2
4−−−−−− −−−−−− SCREW, flat, socket, M5 x 10, black,
class 10.9 per ISO 7089 4
5−−−−−− −−−−−−
SCREW, button head, socket, M5 x 0.8 x
8.0, stainless steel, class 4.8, per ISO
21269
10
6 1609378 1609378 COVER, manifold, Auto−Flo, in-line 1
7 1609377 1609377 COVER, heater, manifold, Auto−Flo,
in-line 1
8−−−−−− −−−−−− SCREW, hex, cap, M5 x 12, zinc, class
8.8, per ISO 4017 1
9 983035 983035 WASHER, flat, m, reg, M5, steel., zinc 1
10 156208 156208 KEY, swivel, locking, H/F, 1.250 in., hex 1
11 −−−−−− WASHER, lock, ext., M3, steel, zinc 1
12 939586 939586 CONNECTOR, plastic, 2 station 1
13 −−−−−− −−−−−− SCREW, machine, pan, rec., M3 x 6,
zinc, class 4.8, per ISO 7045 1
14
938119 — HEATER CARTRIDGE, 0.375 D, 1.00 L,
65 W, 120 V 2 B
— 1612837 HEATER CARTRIDGE, 0.375 D, 1.00 L,
30 W, 120 V
2
15 900470 900470 ADHESIVE, Loctite, 272, red,
hi−temp, 50 ml.
AR
16 275386 275386 COMPOUND, joint, thermal, 0.2 oz. AR
NOTE A: Includes Loctite272adhesive, red, high temperature, 50 ml.
B: Includes thermal joint compound, 0.2 oz.
AR: As Required
NS: Not Shown
Issued 01/19
Original copyright date 2018. Nordson and the Nordson logo are registered trademarks of Nordson Corporation.
Auto-Flo is a trademark of Nordson Corporation.
All other trademarks are the property of their respective owners.

Auto-Flo II Heater Block Assemblies
10
Part 1608561-02 2019 Nordson Corporation
This page intentionally left blank.