Vitals Reference Manual
198 Part No. 79-MAN-04, Rev. I E.H. Wachs
Symptom: The “No connection” message appears on
the HC-100 while operating the ERV-750.
Connection to valve operator interrupted
1. Make sure the ERV-750 is powered on.
2. Make sure the cable is connected, or that a Bluetooth
link has been established.
3. Pressing the brake button on an ERV-750 with a ver-
sion 1.01 control board will interrupt the controller
connection.
i. Tap Yes to autoconnect and re-establish the con-
nection.
ii. If the controller is connected using Bluetooth, it
may take 15-30 seconds to re-establish the link.
• Version 1.01 control boards can be updated. Contact
E.H. Wachs service for information.
Symptom: A “Transducer Error” message appears
while operating the TM-7 or ERV-750.
The transducer readings from the valve operator are out of
normal range. This indicates a problem with either the
transducers or cables.
Caution: Vitals uses transducer readings to calculate
operating torque. Operating with incorrect readings can
cause the machine to break a valve.
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