19
VAC-SIF-05
Training & Maintenance Manual
CVX0260B
Parker Hannifin Corporation
Pneumatic Division
Richland, Michigan
www.parker.com/pneumatic
Pocket Troubleshooting Card
Parker Convum
CVX0260B Sensor
Factory Pre-set Air Economizing / Part Present Signal
Air Economizing (ON) n_1 = -18.0 inHg Can Change
Air Economizing (OFF) n_2 = -15.5 inHg Can Change
Part Present Change
P_3 = -10.0 inHg Can Change
P_4 = -9.5 inHg
Can Change
Output 1 (ou1)
NC
Locked
Output 2 (ou2)
NO
Locked
Units
inHg
Locked
To Change n_1, n_2, P_3 or P_4
Press Mode Key 1 time
Press Up or to change. to store.
Press Up or to change. to store.
Press Up or to change. to store.
Press Up or to change. to store.
To Change Other Sensor Programming (Output, Units, Mode)
Press and
HOLD
Mode , PressUp
Press Up or to change. to store.
Press Up or to change. to store.
Press Up or to change. to store.
Press Up or to change. to store.
Press Up or to change. to store.
Final Key, returns sensor to current pressure reading.
2 1
Troubleshooting
Verify ou1 is set NC.
LED 1 will be ON if <NC>
Check DIN LED for electrical connection
Use Manual Overrides to confirm
manual operation
Verify Input Power is present
Air Economizing- Vacuum <Off> at n_1.
Vacuum turns back <ON> at (H-1) minus (n_2)
Verify max.vacuum level > n_1.
Look for vacuum leaks,verify
inlet pressure to unit.
Verify power to auxiliary power valve.
The system vacuum is obtaining n_1,
but leakage is dropping vacuum pressure
below n_2 at a fast rate.Check for leakage
between cup and generator.
Part Present Signal (ou2)
Verify ou2 is set to <NO>.
LED 2 is OFF.
Vacuum pressure > P_3 to change the
state of ou2. Verify inlet pressure to unit.
System design is set so that a high side
signal is present below P_3: Change P_3
from <NC> to <NO> for a low side signal.
No Vacuum Signal
to Vacuum
Pilot Valve
Air Economozing
does not function -
Unit stays vacuum
<ON>
High Rate of Air
Economizing.
(motor boating)
No part present
(ou2) signal when
vacuum applied
Cut on dashed lines for two pocket guides
2 1
2 1
(Revised 07-23-13)
