Graco InvisiPac Tank-Free HM25 User Manual (English)

Questions and Answers:

S
Shannon WillisAug 22, 2025
Why does my Graco Industrial Equipment InvisiPac system take so long to refill adhesive?
- N
  Nicole MitchellAug 22, 2025
  To address the issue of the Graco Industrial Equipment InvisiPac system taking a long time to refill adhesive, first, check the hopper for adequate material and any blockages. Next, verify the vacuum transfer system air pressure is between 40-80 psi (60 psi is recommended) and ensure air is flowing to the feed wand during refill attempts. Also, examine the funnel filter for any blockages.
P
portermarkAug 25, 2025
What to do if my Graco InvisiPac Tank-Free HM25 Industrial Equipment pump is running away?
- G
  George AndersonAug 25, 2025
  If the Graco Industrial Equipment pump is running away, it could be due to several reasons. First, check if the storage bin is out of adhesive and refill if necessary. Also, ensure the melter temperature is set correctly, according to the manufacturer's recommendations. Additionally, inspect the vacuum transfer hose or funnel for any blockages and clear them. Finally, examine the pump seals for wear or damage and repair them if needed.
J
jlongAug 25, 2025
What causes pump diving in Graco InvisiPac Tank-Free HM25 and how to fix it?
- J
  James HendricksAug 26, 2025
  If the Graco Industrial Equipment pump is diving, it may be due to the storage bin being out of adhesive pellets; refill the bin. Also, the melter might be at an incorrect temperature, too low, so check the temperature setting and adjust it to the manufacturer's recommendation. A plugged vacuum transfer hose or funnel can also cause this, so clear any blockages. Additionally, check if the feed rate for dispensing is too high. Lastly, inspect the pump seals for wear or damage, and repair if necessary.
J
Jennifer HenryAug 27, 2025
How to troubleshoot vacuum transfer not working in Graco InvisiPac Tank-Free HM25 Industrial Equipment?
- A
  Alison BrownAug 27, 2025
  If the vacuum transfer is not working on your Graco Industrial Equipment, first verify the vacuum transfer system air pressure is within 40-80 psi (60 psi recommended). Next, check that the air line is connected and not pinched, if air is at the system air gauge but not to the air shaker. If air is at the shaker but there is no feed, a plugged shaker unit may be the cause. Remove the shaker from the system and remove the plug.
R
Ricardo HughesAug 27, 2025
What causes no current to the melter in Graco InvisiPac Tank-Free HM25?
- M
  Michael BakerAug 27, 2025
  If there's no current to the melter in your Graco Industrial Equipment, check fuses F1 and F2 on the MZLP with the daughter board. Also, ensure that J1 is plugged into the MZLP with the daughter board. The system also requires a hose connected to Channel 1 or the use of the optional Overtemperature Jumper, 16Y727.
T
Tracy WatkinsAug 28, 2025
How to fix no current to hose X on Graco Industrial Equipment?
- J
  Joseph MartinezAug 28, 2025
  If there is no current to hose X on your Graco Industrial Equipment, start by checking fuses F5 and F6 or F9 and F10 on the MZLP that the error hose is connected to. Then, verify that the electrical connector on the heated hose is properly plugged into the MZLP. Check continuity of pins C and D on the electrical connector at the MZLP end of the heated hose. If the system uses only one hose and gun, ensure the heated hose electrical connector is plugged into channel 1 of the MZLP.
A
Alexander ShepherdAug 29, 2025
How do I troubleshoot no current to gun X on Graco InvisiPac Tank-Free HM25?
- S
  Samantha BennettAug 29, 2025
  If there is no current to gun X on your Graco Industrial Equipment, check fuses F3 and F4 or F7 and F8 on the MZLP that controls the error channel. Ensure that the electrical plug on the hose is plugged into the back of the MZLP. Check the continuity of hose pin A (gun end) to J on the MZLP connector end of the hose, and pin C (gun end) to pin A on the MZLP end of the hose; the reading should be 0-1 ohm. If the system uses only one hose and gun, the electrical connector of the heated hose must be plugged into channel 1 of the MZLP.
T
teresasanchezAug 31, 2025
Why is my Graco InvisiPac Tank-Free HM25 gun not heating up?
- H
  Heather MurrayAug 31, 2025
  If the Graco Industrial Equipment gun will not heat, check the resistance on the heater rods; repair the manifold if heater rods measure open. Check for loose cable connections at the system or manifold. Also check the resistance on the RTD, and replace the RTD if it is out of the normal range. Ensure the correct RTD value is set in the AMD setup screen, consulting the manufacturer for the correct RTD value. Measure the resistance of the thermal cutoff; if it is open, replace it.
J
josephperrySep 1, 2025
What causes unexpected current in Graco InvisiPac Tank-Free HM25 Industrial Equipment?
- W
  Wayne SmithSep 1, 2025
  If you are seeing unexpected current in your Graco Industrial Equipment, it could be due to unexpected current flow to the melter. Replace the MZLP. Also, check heater resistance and resistance to ground, and replace the heaters if necessary.
M
mccluredebraSep 2, 2025
What should I do if there's unexpected current in gun X of my Graco InvisiPac Tank-Free HM25 Industrial Equipment?
- A
  Alyssa ReedSep 2, 2025
  If you are seeing unexpected current to gun X on your Graco Industrial Equipment, it could be due to unexpected current flow to gun X. Replace the MZLP. Also, check heater resistance and resistance to ground, and replace the heater if necessary.

Graco InvisiPac Tank-Free HM25 Specifications

General

Model	InvisiPac Tank-Free HM25
Category	Industrial Equipment
Output Rate	25 lb/hr (11.3 kg/hr)
Number of Guns Supported	Up to 2
Power Supply	200-240 VAC, 50/60 Hz, 1 Phase
Viscosity Range	Up to 20, 000 cP
Weight	85 lb (38.6 kg)

Summary

Related Manuals

Required Tools

Models

Warnings

Component Identification

Setup

Grounding

Ensures proper electrical connection to reduce shock hazard.

Location

Specifies ambient temperature and placement requirements for system components.

Attach Components

Details steps for connecting hoses, funnels, and other system parts.

Recommended Air Setup

Connect Electrical Cord

Select ADM Settings

480V Electrical Circuits

Guidelines for installing a transformer for 480V supply and sizing calculations.

208V Electrical Circuits

Recommendations for installing a transformer for 208V supply.

Operation

Overview

Describes the system's function of pulling, melting, pumping, and dispensing adhesive.

Initial Startup and Prime

Steps to prepare the system for its first use, including filling and powering on.

Manual Refill

Automatic Refill

Dispense

Shutdown

Schedule

Pressure Relief Procedure

Drain the System

Flush

Maintenance

Replace Outlet Filter

Steps to inspect and replace the filter preventing contaminants from entering hoses and guns.

Replace Inlet Filter

Procedure for replacing the filter that prevents large items from entering the system.

Replace Funnel Filter

Filter Maintenance Guidelines

Troubleshooting

ADM Error Code Table

Lists ADM error codes, their meaning, and potential causes and solutions.

Repair

Pump

Detailed procedures for replacing seals, bearings, and rod in the pump assembly.

Melter

Multi-Zone Low Power Temperature Control Module (MZLP)

Replace MZLP Fuse

Steps for identifying and replacing fuses on the MZLP module.

Replace MZLP Daughter Card

Air Controls

Replace Air Control Solenoids

Steps to remove and replace the solenoids in the air control assembly.

Replace Air Control Gauge

Instructions for removing and installing the air control gauge.

Replace Pilot Valve

Replace Air Valve

Remove Air Motor

Replace Air Motor Piston O-Ring

Replace Air Motor Throat Seals

Software Update Procedure

Electrical Schematics

Incoming Power and Terminal Jumpers

Details on connecting incoming power and setting terminal jumpers based on phase and voltage.

Systems with One MZLP Module

Systems with Two MZLP Modules

Systems with Three MZLP Modules

Typical Hose Applicator Wiring

Parts

System Parts, Page 1 of 3

List of parts for the InvisiPac system, covering the first part of the assembly.

System Parts, Page 2 of 3

System Parts, Page 3 of 3

System Parts

Electrical Enclosure

Melter and Pump Assembly, 24R375

Air Motor, 24R025

Feed System Shaker and Tube, 24T812

Air Controls Assembly

Pressure Relief Valve, 24P856

Feed Inlet Funnel, 17F461

Inlet Funnel Filter Kit, 24U701

Accessories

Special Tools

Tools designed for system repairs to prevent part damage.

Preventive Maintenance Kit

Complete Maintenance Kit

Non-Graco Gun Adapter Cables

Air Adjustment Lock, 24R084

System Stand, 24R088

System Stand Installation

Steps to place and secure the system on the stand.

Caster for Stand, 120302

Adapter Plate, 24R083

Adapter Plate Installation

Instructions for installing the adapter plate to replace existing applicator systems.

30 Gallon Vibrating Hopper, 24R136

Light Tower Kit, 24R226

Light Tower Kit Installation

Air Reservoir Kit, 16W366

4 Channel Upgrade Kit, 24R237

4 Channel Upgrade Kit Installation

6 Channel Upgrade Kit, 24U575

6 Channel Upgrade Kit Installation

Single-Phase 480V to 240V Transformer, 24U169

InvisiPac ADM Simulator Kit, 24R323

Overtemperature Jumper, 16Y727

Installation

How to install the jumper to run the melter without a hose/gun.

Strain Relief Bushing Kit, 24X190

Installation

Steps to install a strain relief bushing for smaller diameter power cords.

Filter Rebuild Kit, 24W595

Air Metric Fitting Kit, 24W637

Material Tracking Kit, 24Y162

Appendix A - ADM

General Operation

Explains ADM power, screen navigation, and enabling/disabling the heating system.

Icon Identification

Identifies icons used in Operation, Setup, and Schedule screens for user interaction.

Operation Screens

Home

Shows actual temperatures of the system melter and each gun and hose.

Targets

Allows editing temperature settings for the system melter, guns, and hoses.

Events

Explains the Events screen for viewing system logs and error codes.

Errors

Diagnostic

Setup Screens

Maintenance

Schedule

How to set automatic ON/OFF times for heating and pump operation.

Advanced 1

Settings for language, date, time, password, and screen saver.

Advanced 2

Settings for temperature, mass, and distance units.

Advanced 3

Advanced 4

Appendix B - USB Downloading, Uploading

Download Procedure

Steps to download system settings, logs, and language files via USB.

Upload Procedure

Procedure for installing system configuration or custom language files via USB.

USB Logs

System Settings File

System Language File

Technical Data

Dimensions

System Dimensions

Overall physical dimensions of the InvisiPac system.

Mounting Hole Dimensions

Specifications for mounting the system to a wall.

System with Stand and Vacuum Feed Dimensions

Graco Extended Warranty

Graco Information

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Graco InvisiPac Tank-Free HM25 User Manual

Table of Contents

Questions and Answers:

Graco InvisiPac Tank-Free HM25 Specifications

Summary

Related Manuals

Required Tools

Models

Warnings

Component Identification

Setup

Grounding

Location

Attach Components

Recommended Air Setup

Connect Electrical Cord

Select ADM Settings

480V Electrical Circuits

208V Electrical Circuits

Operation

Overview

Initial Startup and Prime

Manual Refill

Automatic Refill

Dispense

Shutdown

Schedule

Pressure Relief Procedure

Drain the System

Flush

Maintenance

Replace Outlet Filter

Replace Inlet Filter

Replace Funnel Filter

Filter Maintenance Guidelines

Troubleshooting

ADM Error Code Table

Repair

Pump

Melter

Multi-Zone Low Power Temperature Control Module (MZLP)

Replace MZLP Fuse

Replace MZLP Daughter Card

Air Controls

Replace Air Control Solenoids

Replace Air Control Gauge

Replace Pilot Valve

Replace Air Valve

Remove Air Motor

Replace Air Motor Piston O-Ring

Replace Air Motor Throat Seals

Software Update Procedure

Electrical Schematics

Incoming Power and Terminal Jumpers

Systems with One MZLP Module

Systems with Two MZLP Modules

Systems with Three MZLP Modules

Typical Hose Applicator Wiring

Parts

System Parts, Page 1 of 3

System Parts, Page 2 of 3

System Parts, Page 3 of 3

System Parts

Electrical Enclosure

Melter and Pump Assembly, 24R375

Air Motor, 24R025

Feed System Shaker and Tube, 24T812

Air Controls Assembly

Pressure Relief Valve, 24P856

Feed Inlet Funnel, 17F461

Inlet Funnel Filter Kit, 24U701

Accessories

Special Tools

Preventive Maintenance Kit

Complete Maintenance Kit

Non-Graco Gun Adapter Cables

Air Adjustment Lock, 24R084

System Stand, 24R088

System Stand Installation

Caster for Stand, 120302