Amana CKF60 Betriebsanleitung PDF herunterladen (Seite 4)

NOTE: Be careful not to kink or dent refrigerant lines. Kinked

or dented lines will cause poor performance or compressor

damage. Do NOT make final refrigerant line connection until

plugs are removed from refrigerant tubing.

1. The ends of the refrigerant lines must be cut square,

deburred, cleaned, and be round and free from nicks or

dents. Any other condition increases the chance of a

refrigerant leak.

2. “Sweep” the refrigerant line with nitrogen or inert gas

during brazing to prevent the formation of copper-oxide

inside the refrigerant lines. A blockage or failure of the

metering device could result if copper-oxide is flushed

into the metering device.

3. After brazing, quench the joints with water or a wet cloth

to prevent overheating of the service valve.

Co nd

Unit

Tons Suct Liq Su ct Liq Suct Liq

1 1/2 15.9 6.4 19.1 9.5 19.1 9.5

2 19.1 9.5 19.1 9.5 19.1 9.5

2 1/2 19.1 9.5 *19.1 9.5 22.2 12.7

3 19.1 9.5 22.2 9.5 22.2 12.7

3 1/2 19.1 9.5 22.2 9.5 28.6 12.7

4 22.2 9.5 28.6 9.5 28.6 12.7

5 22.2 9.5 28.6 9.5 28.6 12.7

Line Diameter OD (mm)

REFRIGERANT LINE LENGTH (METERS)

0-7.5 7.6-15.1 15.2-22.6

* - 19.1 mm REQUIRED FOR FULL RATINGS

^ - 22.2 mm REQUIRED FOR FULL RATINGS

4. Ensure the filter drier paint finish is intact after brazing. If

the paint of the steel filter drier has been burned or

chipped, repaint or treat with a rust preventative. This is

especially important on suction line filter driers which

are continually wet when the unit is operating.

NOTE: Before brazing, verify indoor piston size by checking

the piston kit chart packaged with indoor unit.

Leak Testing (Nitrogen or Nitrogen-Traced)

Pressure test the system to approximately 100 PSI with dry

nitrogen and use soapy water to locate leaks. If you wish to

use a leak detector, charge the system to 10 psi using the

appropriate refrigerant then use nitrogen to finish charging

the system to working pressure then apply the detector to

suspect areas. If leaks are found, repair them. After repair,

repeat the pressure test. If no leaks exist, proceed to system

evacuation.

System Evacuation

NOTE: Scroll compressors should never be used to evacu-

ate or pump down a heat pump or air conditioning system.

1. Connect the vacuum pump with 250 micron capability to

the service valves.

2. Evacuate the system to 250 microns or less using suction

and liquid service valves. Using both valves is necessary

as some compressors create a mechanical seal separat-

ing the sides of the system.

3. Close pump valve and hold vacuum for 10 minutes.

Typically pressure will rise during this period.

• If the pressure rises to 1000 microns or less and

remains steady the system is considered leak-free;

proceed to startup.

• If pressure rises above 1000 microns but holds steady

below 2000 microns, moisture and/or non-condensibles

may be present or the system may have a small leak.

Return to step 2: If the same result is encountered check

for leaks as previously indicated and repair as necessary

then repeat evacuation.

• If pressure rises above 2000 microns, a leak is present.

Check for leaks as previously indicated and repair as

necessary.

• If pressure rises above 2000 microns, a leak is present.

Check for leaks as previously indicated and repair as

necessary then repeat evacuation.

System Start Up

When opening valves with retainers, open each valve only

until the top of the stem is 1/8" from the retainer. To avoid loss

of refrigerant, DO NOT apply pressure to the retainer. When

opening valves without a retainer remove service valve cap

and insert a hex wrench into the valve stem and back out the

stem by turning the hex wrench counterclockwise. Open the

valve until it contacts the rolled lip of the valve body. NOTE:

These are not back-seating valves. It is not necessary to

force the stem tightly against the rolled lip. Open the suction

service valve first! If the liquid service valve is opened first, oil

from the compressor may be drawn into the indoor coil TXV,

restricting refrigerant flow and affecting operation of the

system. After the refrigerant charge has bled into the system,

open the liquid service valve. The service valve cap is the

secondary seal for the valves and must be properly tightened

to prevent leaks. Make sure cap is clean and apply refrigerant

oil to threads and sealing surface on inside of cap. Tighten

cap finger-tight and then tighten additional 1/6 of a turn (1

wrench flat), or to the following specification, to properly seat

the sealing surfaces.

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