11
Test procedure
Double click the minus (-) button until the unit switches off. This is indicated by the LED
tachometer display no longer being illuminated = zero compressor capacity load.
• Start & run the vehicle; then increase the idling speed to (~1500 U/min).
• Proceed by clicking the plus (+) button stage by stage (allowing a 15- second
gap between each stage). This will start to load the compressor control valve
mechanical capacity. Ensure that the vehicle A/C operating low & high side pressures
are changing accordingly on your manifold gauges.
• Care should be taken, as the high side pressure can increase during testing with the
CLT1, and the Quick start-up operation of vehicle control fans will interrupt correct
testing of the A/C compressor’s control valve.
• Always observe the A/C system’s temperatures & pressures while testing with the CLT1.
• Between each increase, observe whether the compressor promotes stages accordingly.
Setting
Low Pressure
Outlet Temp.*
Maximum
1.6 +/- 0.5 bar
0°C +/- 3°
Minimum
3 +/- 0.7 bar
10°C +/-3°
* Note that the tolerances are compared against ambient temperature compressor load
conditions, and must be evaluated in minimum & maximum stages while testing the compressor.
The changes on the low pressure side should be similar to the setting changes on the CLT1.
English
11
Possible solenoid valve err
ors
LED “OC” indicates:
• Poor control valve connection
• Control valve complete interruption
• Control valve with a short circuit
(smaller than 3 ohm)
LED “OL” indicates:
• Too high power consumption
of the valve
Summary of Contents for CLT 1
Page 52: ...2 3 CLT1 4 5 6 7 8 9 10 CLTSIM 10 11 11 52...
Page 53: ...3 CLT1 CLT1 Adiator CLT1 x CLT1 CLT1 53...
Page 55: ...5 Adiator 11 15 V 10 40 C 20 50 C 3 A 3 100 600 15 V 10 40 C 55...
Page 56: ...6 1 2 3 4 5 3 2 1 5 4 56...
Page 57: ...7 1 2 12 1 2 57...
Page 58: ...8 1 CLT1 2 3 CLTUNI VAG CLTVAG VAG Denso CLTDEN BMW Mercedes Toyota 1 2 58...
Page 59: ...9 CLT1 CLTUNI CLTVAG CLTDEN CLT1 12 59...
Page 60: ...10 12 CLT1 30 31 CLTSIM CLTSIM 2 31 60...
Page 61: ...11 1500 15 CLT1 CLT1 1 6 0 5 bar 0 C 3 3 0 7 bar 10 C 3 CLT1 OC 3 OL 11 61...
