General Description; Specifications - Aston Martin DB7 Workshop Manual

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Air Conditioning
General Description
General Description
Specifications
Refrigerant
Designation
Refrigerant R134A
(HFCUAA)
Compressor
Type & model
SD-7H15
Charge weight
1 0 5 0 g ± 5 0 g
Configuration
7 cylinder
Compressor Lubricants
Designation
Polyalkylene glycol (PAG)
Standard for Recovery, Recharge and Recycle Equipment,
System Capacity
120-150 ml
Manufacturer and Type
ICI Klea or equivalent
Manufacturer
Sanden
155 cm^ per revolution
Manufacturer and Type
Sanden SP 20
Feature
Recovery rate
Cleaning capability
Oil separator
Vacuum pump
Filter
Charge
Hoses
Charge pressure
Compressor Belt Tension
Type
Vee belt
Burroughs method
Clavis method
Requirement
0.014-0.062 mVmin. (1.36 kg in 20 minutes)
15 ppm moisture; 4000 ppm o i l ; 330 ppm non-condensable gases in air
With hermetic compressor and automatic oil return
2 stage 0.07 -0.127 mVmin.
Replaceable with moisture indicator
Selectable charge weight and automatic delivery
Dedicated Refrigerant R134A port connections.
Heating element to increase pressure
Condition and range
All figures apply to a cold belt.
New belt 578 to 623 N
If tension is below 356 N, reset at 512 to 534 N
New belt 147 to 153 Hz
If tension is below 110 Hz, reset at 132 to 138 Hz
Note: The tension is measured midway between the compressor and crankshaft pulleys. For a new belt, rotate engine three
revolutions minimum and then re-check the tension.
May 1996 8-5