Do you need a technical diagram for an AC unit?

Our technical resource library is loaded with detailed diagrams to assist you in repairing, replacing, or ordering a new part to keep your AC and heating system operating effectively and efficiently. Use these diagrams with caution and at your own risk as we are not responsible for negligence as a result of use.

Is there a cycle diagram for air conditioning?

A simple air conditioning circuit and cycle diagram that you might find useful. This air conditioning circuit and cycle diagram can help you understand how hvac and refrigeration equipment works. Air Conditioning Circuit and Cycle Diagram Please feel free to copy this air conditioning circuit and cycle diagram and print it out.

What does red mean in an air conditioner cycle?

The red dots inside the piping represent discharge vapor. The solid red color represents high pressure liquid refrigerant. Most air cooled air conditioning and refrigeration systems are designed so that the refrigerant will condense at a temperature about 25 to 30 degrees above outside ambient air temperature.

Is there a line diagram for Astro van?

Or you are a trainee, or perhaps even you who simply would like to know about Chevy Astro Van Vacuum Line Diagram. Whatever you are, we try to bring the web content that matches exactly what you are searching for.

What kind of engine did Chevy Astro have?

Fig. 3: Vacuum hose routing-1985 4.3L carbureted engine (Federal) Fig. 4: Vacuum hose routing-1985 with 4.3L carbureted engine (Federal and low altitude) Fig. 5: Vacuum hose routing-1986-88 with 4.3L TBI engine Fig. 6: Vacuum hose routing-1988-91 with 4.3L TBI engine (Federal without air pump)

What kind of vacuum hose does Chevy Astro have?

Fig. 6: Vacuum hose routing-1988-91 with 4.3L TBI engine (Federal without air pump) Access our Chevy Astro and GMC Safari 1985-1996 Vacuum Diagrams Repair Guide by creating an account or signing into your AutoZone Rewards account. Once you sign in, follow these instructions to access our Repair Guides. Add your vehicle in Manage My Vehicles.

What do the hoses on an air conditioner mean?

The blue hoses, gauge, and valve knob represents the low pressure side of the air conditioning system, and red ones represent the high pressure side. The yellow hose in the center is designed for recharging the system with canned refrigerant or evacuating the system.

How can I tell if my a / C system is working?

As a recommended first step, a quick pressure test of your vehicle’s a/c system with it running will give you an idea if operating pressures are within specifications. After closing both low- and high-side valves on the manifold gauge set, connect hoses to respective low- and high-side pressure fittings on the vehicle.

Where are the vacuum lines on a corvette?

Sarge…just went through much of this in my 78 when I did a heater core replacement. I verified the operation of all systems, tested actuator doors, checked vacuum lines, tracing them all back to source. The previous contributor had it right…it’s the black line that plugs into the back of the A/C selector switch.

What does yellow and black mean on a vacuum line?

Yellow means your car is an original California car. Black means it’s a federal (some other state) car. B) This runs back to the gas tank vent. After 30 years the original vacuum lines are old, brittle and probably cracked.

Is there a vacuum diagram for the 107?

There are many variables through the lengthy 107 manufacturing run and yet no one manual offers a vacuum diagram for all of the various systems. It is only through the kindness of other 107 owners that vacuum problems seem to be resolved.

How to make a hand drawn vacuum diagram?

With that being said, why not try to pool our vacuum resources into one thread. Each post titled with the appropriate section followed by a scanned, hand drawn or pdf drawing or photos. Links to vacuum systems would be great too. Some attachments might get posted more than once due to the multiple models it covers.

How to check the temperature of a heater control valve?

Then check the temperature of the hose on the inlet and outlet sides of the heater control valve. The inlet and outlet hoses should be the same temperature. If the inlet side is warmer than the outlet side, the valve isn’t opening or opening fully. Remove the vacuum line from the vacuum motor and check for engine vacuum.

What causes a vacuum to go out on a heater?

Since a vacuum operated valve defaults to the fully open heat-on position when vacuum isn’t applied, a loss of vacuum is the first thing to suspect in a “heat always on” condition. The loss of vacuum can be caused by a break in a vacuum line or a faulty vacuum switch. To repair a faulty switch, you sometimes have to replace the heater control.

What was the engine compartment wiring diagram for a 1969 Valiant?

This is an engine compartment wiring diagram for a 1969 Valiant. B bodies had a horn relay rather than the horn button activating the horn directly. Other than that, they were very similar.

Where does the a / C line come out of?

I’m sure that the vent is supposed to be hooked to the air cleaner and I don’t see the check valve for the ball and the black 1/8″ line that’s coming out of the passengers side by the blower I believe is the A/C vacuum line. It comes out of a “spit loom” with the pressure cycling connector and the heater control valve.

Is the a / C system in my car working?

A/C works fine, and system gets hot and cold just fine. I took apart the center console and glove box and performed visual inspection of control and vacuum hoses/vacuum connectors and even removed sleeve around hose bundles to check for unseen kinks- all looked fine.

Where are the vacuum lines on my Chevy Blazer?

There is a vacuum reservoir inside the left front fender behind the ABS controller that I was going to have to access to replace some of the lines (I traded the Blazer in a week ago). Check under the hood on the firewall where the vacuum lines originate.

Where is the check valve on a vacuum line?

It must be connected directly to the vacuum plenum located next to the evaporator under the hood. The check valve on this black line is then connected to the vacuum line from the plastic manifold. That took too long. Oddly enough, I have this very same issue.

How does a corvette heater control valve work?

Of course, if you’ve been underneath your dash doing work…there are four different actuators that deliver vacuum to the plenum doors that permits hot and cold air to flow from anyone of those dozen grilles. Your 81 is similar to my 78 and I’m assuming its an air car. If you have questions…feel free to ask.

Where is the vacuum line in the cab?

It is the source vacuum for the function switch in the cab. It must be connected directly to the vacuum plenum located next to the evaporator under the hood. The check valve on this black line is then connected to the vacuum line from the plastic manifold.

Where does the Blue Line go in a vacuum?

Blue line goes to above actuator. Other wires in shot are for radio, speakers, chime box, and horn relay. Pic#3 These vacuum lines connect to the rear of the HVAC control panel. Self explanatory which goes where.

Where does the green wire go on a vacuum line?

Small plug with green, light green, red, and ground (pulled out, but there is a ground in that plug) is plugged into ac compressor harness and red wire is ran to the starter for high blower motor speed. Pic#8: Black round plug goes to AC Accumulator (silver cylindrical thing), grey plug goes to blower motor resistor for different fan speeds.

How does temperature control work in a HVAC unit?

Temperature control is automatic and is controlled by 3 temperature sensors. Once a temperature is selected it is maintained automatically by the temperature control unit repositioned dampers to control air flow through the unit. The temperature control unit determines how to position the dampers by comparing the signals from the three sensors.

What is the type of Acme water valve?

No blog entries found. 4100663 Acme Water Valve Assembly (6pin & 4pin). SCS (5pin) type Available upon request

Do you need a technical diagram for an AC unit?