Haier HC1891VAR operation manual Evacuation, Charging the System

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1.Tubing should be cut square. Make sure it is round and free of burrs at the connecting ends. Clean the tubing to prevent contamination from entering the system.

2.Make sure that both refrigerant stop valves at the outdoor unit are closed.

3.Push the tubing into the fitting until it stops. This prevents flux from getting into the system. 4.Remove the cap and Schrader valve core from the service port to protect the valve seals. 5.Wrap a wet rag around the valve stub before brazing.

6.Braze the joints of interconnecting tubing. Flow dry nitrogen into the shutoff valve port and through the tubing while brazing.

7.After brazing quench with a wet rag to cool the joint. Reinstall the Schrader core in the valve, if removed for brazing.

8.Pressurize the lines to 150 psi maximum with dry nitrogen. Check for leaks at all joints with liquid detergent. If a leak is found, repair it after removing the nitrogen. Repeat the process and re-ckeck.

9.Do not purge the lines with refrigerant. Evacuate the lines and indoor coil.

Evacuation

All new installations must be evacuated to a deep vacuum in order that all noncondensible gases and moisture are removed prior to charging the system. Air in a system causes high condensing pressure, which increases power consumption and reduces performance. The presence of moisture in a system can render it inoperable in a very short time. Proper evacuation assures a dry, uncontaminated system. Here is the recommended evacuation procedure:

1.Connect vacuum pump to both liquid and suction valve service ports.

2.Evacuate the interconnecting tubing and indoor coil to 500 microns or less for a minimum of 30 minutes. Close the valve to the vacuum pump and wait 15 minutes. Vacuum should not rise above 800 microns. If unable to obtain 500 microns, or vacuum rises above 800 microns over 15 minutes period, discontinue evacuation, pressurize and check for leaks. Repair any leaks found and repeat the step 2.

3.Close valve to the vacuum pump and stop pump.

4.When sure of a tight, well evacuated system, charge with refrigerant.

Charging the System

(For systems with capillary tube or fixed orifice metering device)

Before checking the system charge, make sure that the outdoor unit and indoor coil must be an approved match per the unit specification. The indoor conditions should be within 2 F of the desired comfort conditions.

!WARNING - Do not vent refrigerant to the atmosphere! It is a violation of federal law to do so. If the refrigerant needs to be removed from a system to correct the charge inside, always use a recovery or recycling device.

!WARNING - To prevent personal injury, wear safety glasses and gloves when handling refrigerant.

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Contents Central Air Conditioner Message to Owner Table of Content Introduction SpecificationNomenclature for Model Number 806+ Unit Inspection InstallationEquipment Protection from Environment Unit Clearances Line Insulation Outdoor UnitVertical Separation between Indoor and Outdoor Units Refrigerant Line SizingTubing Connections Evacuation Charging the SystemSee unit wiring diagram furnished with this instruction Electrical WiringSystem charging table by superheat Copper Wire Size AWG System StartupWiring Diagram Replacement PartsTroubleshooting Guide OperationSymptom Possible Cause Remedy Air Conditioner Wiring Diagram Made in P.R.C

HC1891VAR specifications

The Haier HC1891VAR is a versatile and efficient refrigerator designed to cater to the modern household's needs. Known for its innovative technology and user-friendly features, the HC1891VAR stands out in the competitive appliance market.

One of the key features of the Haier HC1891VAR is its spacious interior, which offers ample storage options. With a total capacity of around 18 cubic feet, this refrigerator provides enough room for groceries and perishables, making it ideal for families and individuals who require extra space. The adjustable shelves allow users to customize the interior layout to accommodate various food items of different sizes. Furthermore, the door storage compartments offer convenient access to frequently used items, ensuring you're organized and efficient in the kitchen.

Another hallmark of the HC1891VAR is its advanced cooling technology. The refrigerator is equipped with a multi-flow air system, which circulates cool air evenly throughout the compartments. This feature helps maintain optimal temperature levels, ensuring that food stays fresh for longer periods. Additionally, the model employs a frost-free operation that eliminates the need for manual defrosting, saving time and effort while ensuring a hassle-free experience.

The Haier HC1891VAR also focuses on energy efficiency. It is designed to consume less energy compared to traditional refrigerators, earning it an Energy Star rating. This not only contributes to lower electricity bills but also showcases Haier's commitment to environmentally friendly practices. The eco-friendly refrigerant used in the HC1891VAR further enhances its sustainability credentials.

For convenience, the HC1891VAR boasts user-friendly temperature controls that allow for precise adjustments. The LED interior lighting illuminates the inside of the refrigerator, making it easy to find items, even in low light. The sleek design and modern finish ensure that it complements any kitchen decor, while its quiet operation guarantees minimal disruption.

In summary, the Haier HC1891VAR is a well-rounded refrigerator that combines ample storage, advanced cooling technology, energy efficiency, and user convenience. Its thoughtful design and innovative features make it a reliable choice for anyone looking to upgrade their kitchen appliances. With the HC1891VAR, Haier continues to uphold its reputation for quality and customer satisfaction in home appliances.
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