TROUBLESHOOTING
Call 1-855-ZEVAC-GO for troubleshooting support.
If any
abnormal operating conditions exist, follow “SHUTDOWN” instructions in this manual
.
ZEVAC® WILL NOT RUN
•
Verify Valves are in correct positions.
•
Verify Air Supply is producing adequate pressure and flow.
•
Verify drawdown system pressure is above the low-pressure cutoff pressure.
•
Verify discharge system pressure is below the high-pressure cutoff pressure.
•
Manually actuate the air control valve pilot reset valves, which are located inside the
unit housing above the pressure indicators.
•
If normal operation cannot be achieved, call 1-855-ZEVAC-GO for support.
DRAWDOWN PRESSURE IS NOT REDUCING
•
Verify Valves are in correct positions and the ZEVAC intake is open to the drawdown
system.
•
Verify the drawdown system is isolated. If the drawdown system is open to any source
of flow, the ZEVAC will not be able to reduce the system pressure. This can occur in the
case of a valve leaking past its seats while in the closed position. As the ZEVAC is
evacuating gas, the valve is allowing gas to enter the drawdown system and the
pressure may not drop or may reduce more slowly than normal.
•
If the ZEVAC® seems to be operating normally, but the drawdown pressure is not
reducing, call 1-855-ZEVAC-GO for troubleshooting support.
DISCHARGE PRESSURE IS RISING
•
Turn OFF the ZEVAC (Close Air Control Valve) Immediately
•
Verify Valves are in correct positions and the ZEVAC discharge is open to the discharge
system. A closed valve in the discharge piping will cause discharge pressure to rise.
•
Verify discharge piping and connections are sized adequately, the discharge piping
should be the same size as the inlet piping.
•
Depressurize Discharge System if necessary
•
Call 1-855-ZEVAC-GO for support if the problem is unresolved
ZEVAC® IS RUNNING SLOWLY
•
ZEVAC® is not a high-speed machine. It will normally operate slowly and smoothly.
There are many situations that can cause the ZEVAC® to run slower than normal. For
example, liquids in the intake system will slow down the ZEVAC®. Also, start-up in very
cold conditions can cause slow actuation rates until the machine warms up. Also, excess
moisture in the air system can cause