Graco 3A1504B, HVRh Supplemental InstructionsAdd to my manuals
For professional use only.
Not approved to European explosive atmosphere requirements.
Important Safety Instructions
Read all warnings and instructions in all supplied manuals. Save all instructions.
Flow Meter Installation
Flow Meter Installation
This system ships with the flow meters removed. The illustrations below shows what the flow meters will look like after they are installed.
3. Install the output plumbing hand-tight. The outlet plumbing includes the pressure sensor and pressure gauge.
To prevent damage, be careful when handling the pressure sensor and pressure gauge assembly because the pressure sensor cable is attached.
B (Blue) Side A (Red) Side
1. Place the flow meter in position as shown in the illustration below. The flow direction arrow is pointed up and the sensor is on the outlet side (top, as shown) of the flow meter.
B (Blue) Side
A (Red) Side
4. Align the flow meter assembly and fully tighten all fittings.
5. Connect the flow meter cable.
B (Blue) Side A (Red) Side
B (Blue) Side A (Red) Side
2. Hand tighten flow meter fittings to allow proper positioning of the entire assembly.
Ramp Up Feature
Ramp Up Feature
The ramp up feature enables the variable ratio dispensing system to maintain the dispense ratio selected by the user during the dispense operation. During a dispense operation, the B (Blue) pump will monitor the torque amount supplied to verify it does not exceed the capacity of the pump. If the high volume pump is required to dispense at a flow beyond its capacity, an off-ratio condition will occur.
Since the system typically dispenses more volume from the B (Blue) side the system needs to monitor the amount of torque applied on the high volume side. If the torque applied reaches the maximum amount for greater than 100 – 150 mS, the B (Blue) pump logic will force a ramp down of the mixed flow rate and both pumps will synchronize their efforts to reduce the flow rate out of the mixer.
The ramping logic will not be executed when the operation dispenses material out of the ratio check nozzles.
Flow meter calibration dispenses, ratio check dispenses, Learn mode dispenses, and Prime mode dispenses all operate without the ramping logic being executed. Also, the ramping logic will not be executed during a base purge operation. Because of this, when the user executes a flow meter calibration or a ratio check dispense, it is recommended to choose a rate which is known to be less than the maximum capacity of the system.
Typically the first dispense of a day will occur after the machine has been “base purged”. Hence, the mixer is completely full of the base which is thicker viscosity and harder to move material. Because of this the ramp up logic will unconditionally start the first dispense of the day at a reduced rate to get the proper ratio of materials into the mixer.
Anytime the system implements a ramp down operation, or starts a dispense at a reduced rate -- other than the first dispense of the day -- a “System Dispensing Below
Requested Set Point” message is generated and the yellow advisory lamp on the light tower is illuminated. If the system is able to ramp up to the user requested flow rate and ratio the advisory will be cleared accordingly.
The flow rate requested and the temperatures of the two components affect how long it takes to achieve the requested rate.
Dispenses Following System Idle Time
If the material in the system has been idle for a given amount of time -- currently set to 10 minutes -- the next dispense may require significantly more torque to move the material at the same rate as before. Conversely, once the material starts moving through the dispenser plumbing and the two component mixer, less torque is required. Because of this, if the ramp logic idle timer expires, the next dispense will start at a reduced rate.
The system enters Learning Mode whenever a new flow rate or ratio is selected. When a Learning Mode is entered, the “Learning New Set Point” advisory will be generated.
For instance, if the system is in Operator mode dispensing at 335 grams per second at 2.22:1 ratio, then the system is changed to Shot mode and dispenses a shot which has a 320 grams per second and 2.22:1 ratio, then a Learning mode will be entered. Changing operating modes will not affect Learning mode.
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.
Sealant and Adhesive Dispensing Equipment
For the latest information about Graco products, visit www.graco.com
For patent information, see www.graco.com/patents .
TO PLACE AN ORDER, contact your Graco distributor, go to www.graco.com
“Where to Buy” in the top blue bar, or call to find the nearest distributor.
If calling from the US: 800-746-1334
If calling from outside the US: 0-1-330-966-3000
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.
This manual contains English. MM 3A1504
Graco Headquarters: Minneapolis
International Offices: Belgium, China, Japan, Korea
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440-1441
Copyright 2011, Graco Inc. is registered to ISO 9001 www.graco.com
Revision B, February 2017
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