1. Wprowadzenie
The CMTOOL Digital HVAC Manifold Gauge Set is designed for the installation, testing, and maintenance of refrigeration equipment such as air conditioners, refrigerators, and cold storage units. This manual provides essential information for safe and effective operation.
1.1 Zawartość opakowania
- 1 x Digital Manifold Gauge Unit
- 3 x Standard Test Hoses (1.5m)
- 2 x Temperature Clamps
- 1 x Portable Toolbox
- 1 x Instrukcja obsługi

Image: Components included in the CMTOOL Digital HVAC Manifold Gauge Set.
2. Informacje dotyczące bezpieczeństwa
Aby zapobiec obrażeniom ciała lub uszkodzeniu sprzętu, należy zawsze przestrzegać następujących środków ostrożności:
- Podczas pracy z czynnikami chłodniczymi należy nosić odpowiedni sprzęt ochrony osobistej (PPE), w tym okulary ochronne i rękawice.
- Podczas pracy z czynnikami chłodniczymi należy zapewnić odpowiednią wentylację.
- Do not exceed the maximum operating pressure of the hoses (600 PSI / 4.13 MPa). The limit pressure is 3000 PSI.
- Verify that all connections are secure before applying pressure.
- Avoid direct contact with refrigerants, as they can cause frostbite.
- Trzymaj urządzenie z dala od wody i ekstremalnych temperatur.
- Ensure the temperature sensor clips are properly connected for accurate readings.
3. Funkcje produktu
The CMTOOL Digital HVAC Manifold Gauge Set offers several advanced features for HVAC professionals:
- Dual Pressure and Dual Temperature Measurement: Simultaneously measures two pressures (gauge pressure) and two temperatures.
- Automatic Unit Conversion: Supports automatic conversion for pressure (kPa, MPa, Psi, Bar, InHg) and temperature (Celsius/Fahrenheit).
- High-Precision Data Unit: Features a built-in 32-bit digital processing unit and high-precision data acquisition for stable and accurate readings.
- Refrigerant Database: Contains a built-in database of 89 refrigerants, allowing for direct reading of pressure-evaporation temperature, superheat, and subcooling.
- Vacuum Measurement: Tests the percentage of vacuum.
- Próba szczelności pod ciśnieniem: Calculates pressure difference over time to detect refrigerant leaks.
- Trwała konstrukcja: Made with high-strength engineering plastics and flexible non-slip silicone for durability and comfortable handling.
- Viewable Window and LCD Display: Allows direct observation of refrigerant charging status and features a 7.5CM×4CM LCD with backlight for clear data reading.

Obraz: Ponadview of the digital manifold gauge set's key features.

Image: Comprehensive list of 89 refrigerants supported by the device.
4. Konfiguracja
4.1 Identyfikacja komponentów

Image: Labeled diagram of the digital manifold gauge components and dimensions.
- Clamp-on Temperature Probe Socket
- Wyświetlacz LCD
- Przycisk funkcyjny
- Przycisk Uruchom/Zatrzymaj
- R+/R- Refrigerant Type Selection Buttons
- Przycisk jednostki
- Przycisk Zero
- Podświetlany przycisk
- Przycisk ° C / ° F
- Przycisk zasilania
- Zawór niskiego ciśnienia
- Refrigerant Observation Window
- 1/4 inch Low Pressure Inlet
- Zawór wysokiego ciśnienia
- Zawór upustowy ciśnienia
- 1/4 inch High Pressure Inlet
- Refrigerant Inlet / Vacuum Pump Inlet
4.2 Connecting Hoses and Clamps
- Connect the appropriate test hoses to the low pressure inlet (14), high pressure inlet (17), and refrigerant/vacuum pump inlet (18) on the manifold gauge.
- Attach the other ends of the hoses to the service ports of the HVAC system.
- Plug the temperature clamps into the Clamp-on Temperature Probe Sockets (1).
- Securely attach the temperature clamps to the refrigerant pipes to measure pipe surface temperature.
5. Instrukcja obsługi
5.1 Włączanie/wyłączanie i podświetlenie
- Naciśnij przycisk zasilania (11), aby włączyć lub wyłączyć urządzenie.
- Press the Backlit Button (9) to activate or deactivate the LCD backlight for improved visibility in low-light conditions.
5.2 Selecting Refrigerant Type
- Use the R+/R- Refrigerant Type Selection Buttons (6) to scroll through the built-in refrigerant database and select the refrigerant being used (e.g., R134A, R410A).
5.3 Pomiar ciśnienia i temperatury
The device displays dual pressure and dual temperature readings simultaneously.
- Ensure hoses and temperature clampsą prawidłowo podłączone.
- The LCD Display (2) will show T1 and T2 temperatures, along with corresponding pressures.
- Press the Unit Button (7) to cycle through different pressure units (kPa, MPa, Psi, Bar, InHg).
- Press the °C/°F Button (10) to switch between Celsius and Fahrenheit temperature units.

Image: Dual pressure and temperature measurement display.
5.4 Superheat and Subcooling Calculation
The gauge automatically calculates superheat and subcooling based on the selected refrigerant and measured values.
- After selecting the refrigerant, the display will show the calculated superheat (SH) and subcooling (SC) values.

Image: Display showing refrigerant data, superheat, and subcooling.
5.5 Próba szczelności pod ciśnieniem
To perform a pressure leak test:
- Connect the gauge to the system and pressurize it.
- Press the Function Button (3) to enter the leak test mode.
- The gauge will record the initial pressure and continuously monitor for changes.
- The display will show the leak time (HH:MM) and the pressure difference (ΔP) between the initial and instantaneous pressure values.

Image: Pressure leak test display.
5.6 Pomiar próżni
The device can measure the percentage of vacuum.
- Connect the gauge to the system and initiate the vacuum process.
- The display will show the vacuum percentage.

Image: Technician performing HVAC system service with the gauge.
6. Konserwacja
6.1 Czyszczenie
- Wipe the gauge unit with a soft, damp ściereczka. Nie należy używać środków czyszczących o właściwościach ściernych ani rozpuszczalników.
- Ensure the temperature clamps and hoses are clean and free of debris after each use.
6.2 Przechowywanie
- Store the manifold gauge set in its portable toolbox to protect it from dust and physical damage.
- Przechowuj urządzenie w suchym miejscu, z dala od bezpośredniego światła słonecznego i ekstremalnych temperatur.
7. Rozwiązywanie Problemów
7.1 Niedokładne odczyty temperatury
- Wydanie: Temperature readings appear incorrect or unstable.
- Rozwiązanie: Ensure the temperature sensor clips are properly connected to the probe sockets and securely attached to the refrigerant pipes. A poor connection can lead to inaccurate values.
7.2 No Display or Device Not Powering On
- Wydanie: The LCD display is blank or the device does not turn on.
- Rozwiązanie: Check the battery compartment for proper battery installation and charge level. Replace batteries if necessary.
7.3 Pressure Readings are Unstable or Incorrect
- Wydanie: Pressure readings fluctuate excessively or seem inaccurate.
- Rozwiązanie: Verify all hose connections are tight and free of leaks. Ensure the correct refrigerant type is selected in the device settings.
8. Specyfikacje
| Funkcja | Szczegół |
|---|---|
| Numer modelu | MD-12 |
| Wymiary produktu | 13.98 x 12.71 x 4.61 cala |
| Waga przedmiotu | 6.6 funtów |
| Tworzywo | High-strength engineering plastics, flexible non-slip silicone |
| Obsługiwane czynniki chłodnicze | 89 types (e.g., R11, R12, R22, R134A, R404A, R410A, 1234YF) |
| Ciśnienie robocze węża | Max 600 PSI (4.13 MPa) |
| Hose Limit Pressure | 3000 PSI |
| Wyświetlacz | 7.5CM×4CM LCD with backlight |
| Jednostka przetwarzania danych | 32-bit digital |
9. Gwarancja i wsparcie
CMTOOL products are manufactured to high-quality standards. For warranty information, technical support, or service inquiries, please refer to the contact information provided with your purchase or visit the official CMTOOL webStrona. Zachowaj dowód zakupu na wypadek roszczeń gwarancyjnych.