Graco THERM-O-FLOW EC-20 User manual

Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441
Copyright 2004, Graco Inc. is registered to I.S. EN ISO 9001
310814 Rev.A
Instructions
THERM-O-FLOW®
EC-20/40 Timer
For use with THERM-O-FLOW Hot Melt Tanks
Model 118051
EC-20 two event timer for 115 VAC and 230 VAC
Model 118052
EC-40 four event timer for 115 VAC and 230 VAC
Read warnings and instructions.
See page 2 for table of contents.

Manual Conventions
2310814A
Contents
Manual Conventions . . . . . . . . . . . . . . . . . . . . . . . . 2
Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 14
Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . 14
Manual Conventions
Note
Related Manuals
WARNING
WARNING: a potentially hazardous situation which, if
not avoided, could result in death or serious injury.
Warnings in the instructions usually include a symbol
indicating the hazard. Read the general Warnings
section for additional safety information.
CAUTION
CAUTION: a potentially hazardous situation which, if
not avoided, may result in property damage or
destruction of equipment.
Additional helpful information.
309831 THERM-O-FLOW Hot Melt Tank T5
309832 THERM-O-FLOW Hot Melt Tank T7
309833 THERM-O-FLOW Hot Melt Tank T18

Warnings
310814A 3
Warnings
The following warnings include general safety information for this equipment. More specific warnings are included in
the text where applicable.
WARNING
ELECTRIC SHOCK HAZARD
Improper grounding, setup, or usage of the system can cause electric shock.
• Turn off and disconnect power cord before servicing equipment.
• Use only grounded electrical outlets.
• Use only 3-wire extension cords.
• Ensure ground prongs are intact on sprayer and extension cords.
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
• Do not exceed the maximum working pressure or temperature rating of the lowest rated system
component. See Technical Data in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data in all
equipment manuals. Read fluid and solvent manufacturer’s warnings.
• Check equipment daily. Repair or replace worn or damaged parts immediately.
• Do not alter or modify equipment.
• For professional use only.
• Use equipment only for its intended purpose. Call your Graco distributor for information.
• Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.
• Do not use hoses to pull equipment.
• Comply with all applicable safety regulations.

Installation
4310814A
Installation
Key:
A Channel Two On/Off Switch
B Channel One On/Off Switch
C Delay Switch
D Pattern Switch
E Pattern Delay Dial
F Pattern Length Dial
G Voltage Select
H Fuses (F1 and F2) EC-20
J On/Off Power Switch EC-20
K Pattern One Delay/Length Switch
L Pattern One Delay Dial
M Channel One Stitch/Seal Switch
N Fuses EC-40 (F1 and F2)
P Channel Two Stitch/Seal Switch
Q Line Voltage Select
R Stitch/Seal Length Dial
S Stitch/Seal Gap Dial
T Pattern Two Length Dial
U Pattern Two Delay/Length Switch
V Pattern Two Delay Dial
W Pattern One Length Dial
X On/Off Power Switch EC-40
* Free replacement of worn or damaged warning labels
are available by ordering 189930.
FIG. 1: Typical Installation
EC-20 Model 118051
EC-40 Model 118052
A
B
C
D
E
F
G
H
J
K
L
M
N
XQ
P
R
T
S
U
V
W

Installation
310814A 5
Control cords used
Depending on your system setup, you will need the
appropriate control cord. Use the chart below, to order
the appropriate cord for the EC-20/40 timers
Part
number Used with Plugs into Applicators AC or DC
118242 EC-20 or EC-40 T5 or T7 1 EG, AG, or Com-pak DC
118029 EC-20 or EC-40 T7 2 EG, AG, or Com-pak DC
118243 Customer supplied
pattern control
T5 or T7 1 EG, AG, or Com-pak AC or DC
118244 EC-20 or EC-40 T5 or T7 1 EG, AG, or Com-pak AC
118245 EC-20 or EC-40 T5 or T7 1 VEA AC
118030 EC-20 or EC-40 T7 2 EG, AG, or Com-pak AC
118031 EC-20 or EC-40 T18 Up to 4 EG, AG, or Com-pak 230 VAC
118032 EC-20 or EC-40 T18 Up to 4 EG, AG, or Com-pak DC
118033 Optical or proximity
sensor
T5, T7, or
T18
10 ft (3 m) sensor extension cord n/a
118034 Customer supplied
pattern control
T5 or T7 1 EG, AG, or Com-pak AC or DC
118035 Customer supplied
pattern control
T18 Up to 4 EG, AG, or Com-pak AC or DC
118224 EC-20 or EC-40 T5, T7, or
T18
Auxiliary controller (air saver
control)
AC

Setup
6310814A
Setup
Connecting Timer
When connecting control cords to the timer, use FIG. 2.
EC-20/40
Connecting Sensor, Foot Switch, or Air
Saver Control
The sensor connection on the EC-20 and EC- 40 allows
for either a foot switch or optical sensor.
WARNING
To avoid electrical shock, disconnect all power
from the timer. See Warnings, page 3.
FIG. 2: EC-20/40 Pinout
'2.
,
,
!58 /54054 3%.3/2).
TIA
AA
BB CC DD
AA Power Connection (Attach power cord from tank)
BB Auxiliary Connection (Attach power cord from Air
Saver Control)
CC Output Connection (Attach power cord from tank)
DD Sensor In Connection (Attach power cord from
Foot Switch or Optical Sensor)
1. From the hot melt tank, remove cover on auxiliary
connector.
2. Using the appropriate control cord, plug in auxiliary
cable to the tank auxiliary connector. Properly line
up pins. See Control cords used, page 5.
3. Connect control cord to the power (AA) and output
(CC) connection on the timer box. Properly line up
pins.
1. From the foot switch or sensor, connect the control
cord auxiliary connector to the sensor in connection
(DD) on the timer. Properly align pins.
2. From the air saver control, connect the control cord
auxiliary connector to the appropriate timer to air
saver cable.
3. Connect the timer to air saver cable auxiliary con-
nection to the auxiliary connection (BB) on the
timer.

Setup
310814A 7
Setting timers and controllers
Setting both timers will take some adjusting until you get
the appropriate dispensing pattern. Using the instruc-
tions below, dispense material into a waste receptacle
until your settings are adjusted accordingly.
Setting EC-20
See FIG. 3. The EC-20 is a two event timer. Event one is
the delay or period of time when the applicator is not dis-
pensing. Event two is pattern length or period of time
when the applicator is dispensing. Both events are vari-
able but are also cumulative. For example, when you
adjust event one you must also adjust event two.
For the following instruction, use FIG. 1, page 4.
All zone heating indicators must flash green before
pump can operate.
FIG. 3: EC-20 Output timing diagram
AUX
OUTPUT
LEAD
DELAY LENGTH
LAG
SENSOR
.033 sec .033 sec
INPUT
1. Start up and adjust hot melt tank settings. See
appropriate hot melt tank manual.
T5-see manual 309831
T7-see manual 309832
T18-see manual 309833
2. Set line voltage switch (G) to appropriate voltage.
3. Turn On/Off power switch (J) ON.
4. Adjust pattern delay dial (E). Dial setting “0” is
shortest duration, dial setting “10” longest duration.
5. Turn delay switch (C) to HI or LO for shorter or
longer delay time.
6. Adjust pattern length dial (F). Dial setting “0” is
shortest duration, dial setting “10” longest duration.
7. Turn pattern switch (D) to HI or LO for shorter or
longer pattern delay time.

Setup
8310814A
Setting EC-40
See FIG. 4.The EC-40 is a four event timer. Event one
and three are the delay or periods of time when the
applicator is not dispensing. Event two and four are pat-
tern length or periods of time when the applicator is dis-
pensing. Both events are variable but are also
cumulative.
For the following instruction, use FIG. 1, page 4.
FIG. 4: EC-40 Output timing diagram
1. Start up and adjust hot melt tank settings. See
appropriate hot melt tank manual.
T5-see manual 309831
T7-see manual 309832
T18-see manual 309833
AUX
SEAL
LEAD
DELAY
LAG
SENSOR
.033 sec .033 sec
INPUT
STITCH
1
LENGTH DELAY LENGTH
122
LENGTH
GAP
PATTERN 1 PATTERN 2
2. Set line voltage switch (Q) to appropriate voltage.
3. Turn On/Off power switch (X) ON.
4. Adjust pattern one and two delay dials (L,V). Dial
setting “0” is shortest duration, dial setting “10”
longest duration.
5. Turn pattern one and two delay switches (K, U) to
HI or LO speed for shorter or longer pattern delay.
6. Adjust pattern one and two length dials (W, T). Dial
setting “0” is shortest duration, dial setting “10”
longest duration.
7. Turn pattern one and two switches (K, U) to HI or
LO speed for shorter or longer pattern length.

Setup
310814A 9
Setting stitching on EC-40
See FIG. 4, page 8. The EC-40 has the capability to
stitch or seal. Stitching is repetitive dispenses of mate-
rial. Seal is one long dispense. Adjust the length and
gap with your stitch and seal settings to meet your spe-
cific needs.
For the following instruction, use FIG. 1, page 4.
Starting up dispense
To start up your EC-20/40 settings for dispensing mate-
rial, an optical sensor or foot switch will have to be acti-
vated. Once activated, material will start dispensing
according to the specific settings on the timer units. If
the dispense pattern does not meet your specific needs,
repeat instructions for Setting EC-20 and/or Setting
EC-40.
1. After setting the delay and length, adjust the
stitch/seal switch (M, P) to STITCH or SEAL per
channel. Each channel represents each applicator.
2. If you wish to not use this function, turn the
stitch/seal switch OFF.
3. Adjust the stitch length dial (R). Dial setting “0” is
shortest duration, dial setting “10” longest duration.
4. Adjust the stitch gap dial (S). Dial setting “0” is
shortest duration, dial setting “10” longest duration.

Troubleshooting
10 310814A
Troubleshooting
Problem Cause Solution
No pilot light Not properly connected to line power. Check F1
Pilot light is dim. Aux circuit does not
work. 24 VDC outputs are 12 VDC
Line voltage switch not properly set Check line voltage switch for proper
setting.
Light on sensor works, but channel
activity indicators including aux indi-
cator show no response to sensor
input.
Sensor cable not properly connected. For proximity sensor, check F2,
check sensor cable and its connec-
tions, and check circuit board.
Light on sensor and aux indicator
work but channel activity indicators
show no response to sensor input.
Channel switches not properly set. Check channel switches on/off.
Channel activity indicators show pat-
tern in progress and auxiliary circuit
board works, but applicators don’t
respond.
Applicator voltage to output cable
incorrect.
Set applicators to proper voltage for
output cable.
Output cable and/or connection error. Check integrity of output cable and
connections.
Material not flowing to applicator. Check fluid system for blockage and
proper fluid pressure.
Applicator error. Install a known working applicator.
Relay not properly set. Check relay if applicators are line
voltage type.

Repair
310814A 11
Repair
Replacing fuses
Replace timer fuses (H) or (N) by pulling out old fuse
and inserting new fuses from fuse kit 118182. See FIG.
1, page 4.
Replacing 15 amp relay Replacing control board
WARNING
To avoid electrical shock, disconnect all power
from timer. See Warnings, page 3.
FIG. 5: Timer repair
EE FF
GG
HH
1. See FIG. 5. Remove four screws holding front panel
(EE) onto timer. Remove front panel.
2. Remove two screws (GG). Remove relay (FF).
Replace with 15 amp relay 118261.
1. See FIG. 5. Remove four screws holding front panel
(EE) onto timer. Remove front panel.
2. Pull out control board (HH) and replace. For
replacement, order repair kit 118182.

Replacement Parts
12 310814A
Replacement Parts
Dimensions
Technical Data
Part No. Description Qty.
189930 LABLES, warning 1
118182 REPAIR KIT, fuses and motor con-
trol board
1
118261 RELAY, 15 amp 1
6.75 in. (171.5 mm) 7.5 in. (190.5 mm)
6 in. (152.4 mm)
4 in. (101.6 mm) 0.5 in. (12.7 mm) diameter
Input voltage Grounded 115 or 230 VAC
Output voltage 115/230 VAC, 24 VDC
Weight 6.5 lbs (2.95 kg)

Technical Data
310814A 13

All written and visual data contained in this document reflects the latest product information available at the time of publication.
Graco reserves the right to make changes at any time without notice.
Graco Headquarters: Minneapolis
International Offices: Belgium, China, Japan, Korea
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440-1441
www.graco.com
Printed in USA 310814A
11/2004
Graco Standard Warranty
Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from defects in material
and workmanship on the date of sale to the original purchaser for use. With the exception of any special, extended, or limited warranty published by
Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by Graco to be
defective. This warranty applies only when the equipment is installed, operated and maintained in accordance with Graco’s written
recommendations.
This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by faulty
installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution of
non-Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility of Graco equipment with
structures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture, installation, operation or maintenance
of structures, accessories, equipment or materials not supplied by Graco.
This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor for verification of
the claimed defect. If the claimed defect is verified, Graco will repair or replace free of charge any defective parts. The equipment will be returned
to the original purchaser transportation prepaid. If inspection of the equipment does not disclose any defect in material or workmanship, repairs will
be made at a reasonable charge, which charges may include the costs of parts, labor, and transportation.
THIS WARRANTY IS EXCLUSIVE, AND IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
TO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.
Graco’s sole obligation and buyer’s sole remedy for any breach of warranty shall be as set forth above. The buyer agrees that no other remedy
(including, but not limited to, incidental or consequential damages for lost profits, lost sales, injury to person or property, or any other incidental or
consequential loss) shall be available. Any action for breach of warranty must be brought within two (2) years of the date of sale.
GRACO MAKES NO WARRANTY, AND DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE, IN CONNECTION WITH ACCESSORIES, EQUIPMENT, MATERIALS OR COMPONENTS SOLD BUT NOT
MANUFACTURED BY GRACO. These items sold, but not manufactured by Graco (such as electric motors, switches, hose, etc.), are subject to
the warranty, if any, of their manufacturer. Graco will provide purchaser with reasonable assistance in making any claim for breach of these
warranties.
In no event will Graco be liable for indirect, incidental, special or consequential damages resulting from Graco supplying equipment hereunder, or
the furnishing, performance, or use of any products or other goods sold hereto, whether due to a breach of contract, breach of warranty, the
negligence of Graco, or otherwise.
FOR GRACO CANADA CUSTOMERS
The Parties acknowledge that they have required that the present document, as well as all documents, notices and legal proceedings entered into,
given or instituted pursuant hereto or relating directly or indirectly hereto, be drawn up in English. Les parties reconnaissent avoir convenu que la
rédaction du présente document sera en Anglais, ainsi que tous documents, avis et procédures judiciaires exécutés, donnés ou intentés, à la suite
de ou en rapport, directement ou indirectement, avec les procédures concernées.
Graco Information
TO PLACE AN ORDER, contact your Graco distributor or call to identify the nearest distributor.
Phone: [phone] or Toll Free: 1-800-328-0211, Fax: [phone]