6
EQUIPMENT AND TOOLS
A separate set of hoses and hand valves must be maintained for use with sealed systems
with R134a refrigerant. Equipment used with CFC refrigerants will contaminate R134a
(HFC) sealed systems.
EQUIPMENT DESCRIPTION
Tank of Liquid Refrigerant –
Care should be
taken to be sure the proper refrigerant is
available. (Fig. 1)
Handle the tank of liquid refrigerant
properly.
The contents of the tank are under
pressure. Observe the following precautions and
DO NOT
:
•
Drop or handle the tank roughly
•
Tamper with any installed safety relief valves
•
Store the tank in direct sunlight or in a damp
location.
•
Heat the tank above 125
°
F.
•
Refill the tank
Empty tanks should be disposed of properly.
ILLUSTRATION
Charging Scale –
An electronic or
computerized charting scale measures the
amount of liquid refrigerant charge that is
dispensed into a sealed system. (Fig. 2)
The amount of refrigerant dispensed into the
sealed system is indicated on a Liquid Crystal
Display (LCD). The LCD is calibrated in .5
ounces or .01 gram increments or smaller. The
charging scale can be used to monitor the
amount of refrigerant necessary to back flush a
system.
Charging Hose Configuration
– One hose 4 to
6 feet long should be attached to a pigtail
consisting of a ball type hand valve with a 45
°
threaded fitting. A low-loss adapter should be
connected to the 45
°
threaded fitting. (Fig. 3)
Summary of Contents for Designer DDFB304
Page 1: ...F90612...
Page 2: ...F90612 VIKING RANGE CORPORATION P O DRAWER 956 GREENWOOD MS 38930 USA...
Page 22: ...21 Wiring Schematic 30 W All Freezer...
Page 23: ...22 AF 30 LIGHT CIRCUITS...
Page 24: ...23 AF 30 120V CIRCUIT...
Page 25: ...24 AF 30 SEALED SYSTEM...
Page 26: ...25 AF 30 ICEMAKER CIRCUIT...
Page 27: ...26 Wiring Schematic 36 W All Freezer...
Page 28: ...27 AF 36 LIGHT CIRCUITS...
Page 29: ...28 AF 36 120V CIRCUIT...
Page 30: ...29 AF 36 SEALED SYSTEM...
Page 31: ...30 AF 36 ICEMAKER CIRCUIT...
Page 32: ...31 Wiring Schematic 30 W All Refrigerator...
Page 33: ...32 AR 30 120V INPUT AR 30 LIGHT CIRCUITS...
Page 34: ...33 AR 30 SEALED SYSTEM...
Page 35: ...34 Wiring Schematic 36 W All Refrigerator...
Page 36: ...35 AR 36 120V INPUT AR 36 LIGHT CIRCUITS...
Page 37: ...36 AR 36 SEALED SYSTEM...
Page 39: ...38 ALL MODELS New Control Boards with adapter functionality...
Page 40: ...39...
Page 48: ...47 SEALED SYSTEM...
