WZ-A301 - Pressure gauge Vevor - Free user manual and instructions

USER MANUAL WZ-A301 Vevor

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MANIFOLD GAUGE SET OPERATING MANUAL

MODEL: WZ-A301

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VEVOR®

MANIFOLD GAUGE SET OPERATING MANUAL

Model: WZ-A301

Open black medical or gas cylinder kit with blue, red, and yellow tubing, no visible text or symbols

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This is the original instruction, please read all manual instructions carefully before operating. VEVOR reserves clear interpretation of our user manual. The appearance of the product shall be subject to the product you received. Please forgive us that we won't inform you and there are any technology or software updates on our product.

Technical parameters

Brand	Vevor
Model	WZ-A301
Measuring range:	-30~350psi (Low Side Gauge; 0~500psi (High Side Gauge)
Refrigerants	R134A/ R22/ R12/R502
Product size (mm)	285×250×90
Product weight (kg)	2.1 (Including all accessories)

Safety Precautions

Safety & Warning

Warning:

1. Not exceed 80% of claimed range of manifolds when using.
2. Un-proper operation may lead to leakage or personal injury.
3. Please read manual & operation instruction of manifold or equipment
4. The refrigeration gauge has been calibrated at the factory; however, due to handling and shipping it may be lightly out of adjustment. To a unscrew and firmly hold center screw fixed with screwdriver and with thumb and forefinger gripping pointer near center, gently turn pointer to zero. Repeat carefully if not on zero.

IMPORTANT:

1. Gauges are available for most refrigerants in°F.
2. Please read before putting new equipment into operation. The Compound Rubber forms seals around the valve stem. Tighten the valve nut a quater to half turn to take up the set before commencing open and retighten as necessary to keep the seal tight.

NOTE: Check equipment manufactures catalogue or instruction sheets for specific recommendations on refrigerant charge, oil change and service procedures for any particular piece of equipment.

WARNING! To prevent personal injury.

Wear goggles when working with refrigerants. Contact with refrigerants may cause injury.

Wear gloves when working with refrigerants. Contact with refrigerants may cause injury.

Incorrect use or connections may cause leaks or explosions. Read and follow the instructions carefully and take precautions avoid leaks or explosions. Confirm that all associated devices grounded correctly before use.

CALIFORNIA PROPOSITION65 This product contains chemicals known to the State of California to cause cancer and birth de or other reproductive harm.

This manifold is designed for use by technically trained refrigeration and air conditioning service technicians. Due to the unusually HIGH PRESSURE AND HAZARDOUS GASES IN ALLSTSTEM is, misapplication could result in injury or death. Manufactory warns against the sale to or use of this product any other than professionally trained personnel.

Product Structure Diagram

Hanging Hook Blue Low Side Gauge Red High Side Gauge Optical Sightglass Blind Union Blue Low Side Service Valve Red High Side Service Valve Blue Hose (to low side) Red Hose (to high side) Tee Port (Schrader valve) Yellow Hose (utility)

Instruction of use

Schematic of gauge manifold installation on external drive compressor with service valves. A-Manifold Suction Valve. B-Manifold Discharge Valve C-Compressor Discharge Service Valve (DSV). D-Compressor Suction Service Valve(SSV). E-Servide Opening. 1-Purging. 2-Charging or Adding Oil. 3-Bypassing. 4-Gauge Reading. 5-Both manifold valves are turned the way in. System is pumping vapor and both low and high-side pre are being read.

5 A E B C (DSV) D(SSV)

1 LOW HIGH PURGING

2 LOW HIGH CHARGING OR ADDING OIL

VALVE MUST BE CLOSED

graph TD
    A["Low"] --> B["Switch"]
    C["High"] --> D["Switch"]
    B --> E["Inverter"]
    D --> F["Inverter"]
    E --> G["BYPASSING"]
    F --> G
    style A fill:#f9f,stroke:#333
    style C fill:#f9f,stroke:#333
    style D fill:#f9f,stroke:#333
    style G fill:#ccf,stroke:#333

4 LOW HIGH GAUGE

Lines from the manifold are attached to the SSV at D and should b one to two turns lose while the line to the DSV should be tightened open both of the manifold valves at A and B 1/4 turn to 1/2 turn a the middle opening,E.

Now turn the(DSV)Cstemin1'8 to 1/4 turn for just a moment(crack the valve).A surge of high-pressure refrigerant will then rush through the li and the manifold and purge to the atmosphere at the loose connectic D the SSv. This connection may then be tightened.Purging is necessary to remove air and moisture from the manifold and lines. NOTE: Purgi must be held to a minimum to avoid damage to the atmosphere.

Carefully test for leaks while the manifold and its lines are under hig pressure. Correct any leak immediately.

Various service and testing operations may be performed after the testing manifold has been installed:

1. Observe operating pressures by:

Closing valve A by turning all the way in.

Closing valve B by turning all the way in.

Cracking open back seat of valve C.

Cracking open back seat of valve D.

1. Charge refrigerant into system by:

Connecting refrigerant cylinder to E (vapor only).

Opening valve A.

Closing valve B.

Closing front seat of valve D slowly.

1. Purge condenser by:

Closing valve A.

Closing valve B.

Cracking open valve C.

1. Charge liquid refrigerant into high side by:

Connecting refrigerant cylinder to E.

Closing valve A.

Opening valve B.

Mid-positioning valve C.

1. Build up pressure in low side for control setting or to test for leaks

Sealing E with seal cap.

Opening valve A.

Close valve C.

PRESSURE AND COMPOUND GAUGE RECALIBRATION INSTRUCTIONS:

The refrigeration gauge has been calibrated at the factory; however, due to handling and shipping, it may be slightly out of adjustment. To adjust, unscrew the lens and firmly hold the center screw fixed with a screwdriver, and with thumb and forefinger gripping the pointer near the center, gently turn the pointer to zero. Repeat carefully if not on zero. It's unavailable for wet gauge, and the wet gauge does not require gauge zeroing.

Scope of application

For R134A/ R22/ R12/R502 Refrigerant only

Common fault analysis

fault phenomenon	failure cause	solution
Refrigeration agent leakage	The conversion joint ga is too large	Tighten the switch connector

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Made In China

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Open black medical or gas testing kit with blue and red pressure gauges and tubing (no visible text or labels)

BESOIN D'AIDE? CONTACTEZ-NOUS!

Hanging Hook Blue Low Side Gauge Red High Side Gauge Optical Sightglass Blind Union Blue Low Side Service Valve Red High Side Service Valve Blue Hose (to low side) Red Hose (to high side) Tee Port (Schrader valve) Yellow Hose (utility)

Mode d'emploi

graph TD
    A["LOW"] --> C["PURGING"]
    B["HIGH"] --> C["PURGING"]
    style A fill:#fff,stroke:#000
    style B fill:#fff,stroke:#000
    style C fill:#fff,stroke:#000

2 LOW HIGH CHARGING OR ADDING OIL

VALVE MUST BE CLOSED

3 LOW HIGH BYPASSING

4 LOW HIGH GAUGE

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Fabriqué en Chine

VEVOR®

TOUGH TOOLS, HALF PRICE

Open black medical or gas testing kit with blue and red pressure gauges and tubing (no visible text or labels)

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Hanging Hook Blue Low Side Gauge Red High Side Gauge Optical Sightglass Blind Union Blue Low Side Service Valve Red High Side Service Valve Blue Hose (to low side) Red Hose (to high side) Tee Port (Schrader valve) Yellow Hose (utility)

Gebrauchsanweisung

2 LOW HIGH CHARGING OR ADDING OIL

VALVE MUST BE CLOSED

3 LOW HIGH BYPASSING

4 LOW HIGH GAUGE

Open black medical or gas testing kit with blue, red, and yellow pressure gauges and tubing (no visible text or labels)

Hanging Hook Blue Low Side Gauge Red High Side Gauge Optical Sightglass Blind Union Blue Low Side Service Valve Red High Side Service Valve Blue Hose (to low side) Red Hose (to high side) Tee Port (Schrader valve) Yellow Hose (utility)

2 LOW HIGH CHARGING OR ADDING OIL

VALVE MUST BE CLOSED

3 LOW HIGH BYPASSING

4 LOW HIGH GAUGE

Open black medical or gas testing kit with blue and red pressure gauges and tubing (no visible text or labels)

Hanging Hook Blue Low Side Gauge Red High Side Gauge Optical Sightglass Blind Union Blue Low Side Service Valve Red High Side Service Valve Blue Hose (to low side) Red Hose (to high side) Tee Port (Schrader valve) Yellow Hose (utility)

graph TD
    A["LOW"] --> C["PURGING"]
    B["HIGH"] --> C["PURGING"]
    style A fill:#fff,stroke:#000
    style B fill:#fff,stroke:#000
    style C fill:#fff,stroke:#000

2 LOW HIGH CHARGING OR ADDING OIL

VALVE MUST BE CLOSED

3 LOW HIGH BYPASSING

4 LOW HIGH GAUGE

Open black medical or gas testing kit with blue, red, and yellow pressure gauges and tubing (no visible text or labels)

POTRZEBUJESZ POMOCY? SKONTAKTUJ SIĘ Z NAMI!

Hanging Hook Blue Low Side Gauge Red High Side Gauge Optical Sightglass Blind Union Blue Low Side Service Valve Red High Side Service Valve Blue Hose (to low side) Red Hose (to high side) Tee Port (Schrader valve) Yellow Hose (utility)

2 LOW HIGH CHARGING OR ADDING OIL

VALVE MUST BE CLOSED

3 LOW HIGH BYPASSING

4 LOW HIGH GAUGE

www.vevor.com/support

Open black medical or gas testing kit with blue and red pressure gauges and tubing (no visible text or labels)

HULP NODIG? NEEM CONTACT MET ONS OP!

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Hanging Hook Blue Low Side Gauge Red High Side Gauge Optical Sightglass Blind Union Blue Low Side Service Valve Red High Side Service Valve Blue Hose (to low side) Red Hose (to high side) Tee Port (Schrader valve) Yellow Hose (utility)

Gebruiksaanwijzing

graph TD
    A["LOW"] --> C["PURGING"]
    B["HIGH"] --> C["PURGING"]
    style A fill:#fff,stroke:#000
    style B fill:#fff,stroke:#000
    style C fill:#fff,stroke:#000

2 LOW HIGH CHARGING OR ADDING OIL

VALVE MUST BE CLOSED

3 LOW HIGH BYPASSING

4 LOW HIGH GAUGE

www.vevor.com/support

Gemaakt in China

VEVOR®

TOUGH TOOLS, HALF PRICE

Open black medical or gas testing kit with blue and red pressure gauges and tubing (no visible text or labels)

BEHÖVER HJÄLP? KONTAKTA OSS!

Hanging Hook Blue Low Side Gauge Red High Side Gauge Optical Sightglass Blind Union Blue Low Side Service Valve Red High Side Service Valve Blue Hose (to low side) Red Hose (to high side) Tee Port (Schrader valve) Yellow Hose (utility)

2 LOW HIGH CHARGING OR ADDING OIL

VALVE MUST BE CLOSED

3 LOW HIGH BYPASSING

4 LOW HIGH GAUGE

www.vevor.com/support

Tillverkad i Kina