DMG-5 DIGITAL MANIFOLD

Introduction

Please read and retain these directions for use. Do not throw them away! The warranty does not cover damage caused by incorrect use of the equipment! Subject to technical modifications!

Español: ¡Por favor, lea y conserve el manual de instrucciones! ¡No lo tire! ¡En caso de daños por errores de manejo, la garantía queda sin validez! Modificaciones técnicas reservadas!

Français: Lire attentivement le mode d'emploi et le ranger à un endroit sûr! Ne pas le jeter ! La garantie est annulée lors de dommages dûs à une manipulation erronée ! Sous réserve de modifications techniques!

Manifold Diagram and Components

The DMG-5 features a digital display and various ports and controls. Key components are identified by numbers in the diagram:

• 1: Power Button
• 2: Up/Down Arrow Keys
• 3: Backlight Button
• 4: Set Button
• 5: Mode Button
• 7: Delete Key
• 8: Play Button
• 9: LED Indicator
• 10: Low Pressure Port
• 11: High Pressure Port
• 12: T1 Temperature Terminal Connector
• 13: T2 Temperature Terminal Connector
• 14: Low Pressure Port (DMG-5)
• 15: Refrigerant Tank Connection
• 16: T-Connector (for Vacuum Pump & Refrigerant Tank)
• 17: (Connection point, not explicitly detailed in text but visible in diagram)

The display shows readings such as Low/High pressure, Saturated Temperature, Ambient Temperature, Refrigerant type (e.g., 410A), and T1/T2 temperatures.

Declaration of Conformity

EC-DECLARATION OF CONFORMITY
We declare on our sole accountability that this product conforms to the standards and guidelines stated.

DECLARATION CE DE CONFORMITÉ
Nous déclarons sous notre propre responsabilité que ce produit est conforme aux normes et directives indiquées.

DECLARACION DE CONFORMIDAD CE
Declaramos, bajo nuestra responsabilidad exclusiva, que este producto cumple con las normas y directivas mencionadas.

Certifications include: 2004/108/EG, EN 55011:1998 Teil 1, Klasse B, EN 61000-6-1:2001, EN 61000-6-3:2001, EN 14624:2005.

Authorized representative signature: David Madden, JB Industries, Inc.

Marking Information

Danger: ⚠️ This sign warns against the danger of personal injuries.

Caution: ⚠️ This sign warns against the danger of property damage and damage to the environment.

Call for action: ➡️ This indicates a required action.

For EU Countries Only: Do not discard power tools with household waste! According to European Directive 2002/96/EC on discarded electrical and electronic devices, and its implementation international law, power tools that can no longer be used must be collected and handed over for environmentally sound recycling.

General Safety Instructions

• The DMG-5 must be used only by expert personnel certified according to country-specific standards.
• Before first use, read this operating manual thoroughly to prevent improper use.
• The DMG-5 must be used only with the refrigerants indicated. Other gases or fluids must never be used.
• Do not use or store the unit in environments outside the working temperature range (14°F – 122°F / -10°C – 50°C).
• Protect the DMG-5 from rain or other external liquids.
• Never exceed the manifold's maximum pressure of 870 psi (60 bar). Exceeding this limit can irreparably damage sensors and potentially cause the sight glass to break, leading to user injury.
• Always wear personal protection gear, including safety gloves and safety glasses, during operation.
• Avoid dropping the DMG-5 from significant heights.
• Do not overtighten the valves, as this permanently reduces their seal.
• Connect only original JB Industries accessories (e.g., DMG-Vac, DMG-DATA) to the DMG-5.

Technical Data

Basic Functions

1. Open the battery compartment and connect the 9V battery.
2. To turn on the DMG-5, press the power button (1) for 3 seconds. Upon startup, the DMG-5 automatically calibrates the sensors to the current zero point.
3. To turn on the backlighting, press the backlight button (3) for 3 seconds. Note: Backlighting increases current consumption.
4. To change settings, press the set button (4). Navigate the settings menu using the up/down arrow keys (2), confirm with the set button (4), and use the delete key (7) to go back. The screen returns to the overview after 5 seconds of inactivity.

From the settings menu, you can adjust:

• Refrigerants
• Pressure display
• Temperature display
• Hour and minute settings
• Month and day settings
• Year setting
• Interval of recording
• Ambient temperature display or T2-T1
• T1 / T2 or overheating / undercooling display
• Auto-Off: The device turns itself off after 10 minutes to save battery.
• Date format settings (MM.DD or DD.MM)

5. If sensors need recalibrating, hold down the Mode (5) and Play (8) keys for 10 seconds.
6. During operation, use the up and down arrow keys (2) to switch between views for ambient temperature / T1 / T2 and T2-T1 / overheating / undercooling.

Using the DMG-5

Evacuation and Filling

1. Press the start button for 3 seconds and select the desired basic settings (e.g., refrigerant).
2. Connect a refrigerant hose from the system's low-pressure port to the DMG-5's low-pressure port (14). If possible, connect the two high-pressure sides with a hose.
3. At the central T-connector (16), connect the vacuum pump and the refrigerant tank (15). JB Industries recommends using hoses with shut-off valves to prevent overpressure on the vacuum pump during filling.
4. Turn on the vacuum pump and open the connection to the system to begin evacuation.
5. When a vacuum level of -0.95 bar is reached, the green LED will blink.
6. Turn off the vacuum pump.
7. If the vacuum level is maintained below 500 microns for 30 minutes, the green LED will stay on continuously, indicating a successful leak test.
8. To start the filling process, open the connection from the refrigerant tank to the system. Ensure the path to the vacuum pump is closed off at the refrigerant hose. If the maximum allowable pressure is exceeded during filling, the red LED will blink.
9. Connect the T1 temperature terminal plug to its designated connector (12) on the DMG-5 and clamp the terminal to the system's suction line to measure superheating.
10. Connect the T2 temperature terminal plug to its designated connector (13) on the DMG-5 and clamp the terminal to the system's heating gas line to measure subcooling. If both temperature terminals are connected, superheating and subcooling are displayed simultaneously.
11. Before finishing the filling process, ensure no refrigerant remains in the DMG-5 or charging hoses.
12. If necessary, purge the DMG-5 with nitrogen and evacuate it before the next use.

Heat Pump Mode

The Heat Pump mode allows automatic switching between the low-pressure and high-pressure ports when heating with reversible units.

1. Press and hold the Up and Down arrow buttons simultaneously for 5 seconds to activate Heat Pump mode.
2. The symbol ♨️ will replace the previous symbol.

Accessories

The DMG-DATA recording device, sold separately, can be connected to the manifold to record job data.

Disposal

Parts of this device are made from recyclable materials and can be returned for reuse. Authorized and certified recycling facilities are available for this purpose. For environmentally sound disposal of non-recyclable parts (e.g., electronic waste), consult your local waste authority. Never dispose of used batteries in fire or household refuse. Your specialized dealer can offer environmentally sound disposal of used batteries.