1
Perform
all steps of “Check Before Operation”
Purge with system gas (if purging with inert gas, modify this procedure)
Purge should be performed with gas from inlet stem passing through inlet hose,
Zevac machine, and outlet hose, center from discharge tree
2
Verify Gas Inlet connection is open to system gas
3
Verify Gas Inlet Pressure indicator correctly indicates system gas pressure
4
Verify Gas Discharge connection is open to system gas
5
Verify Gas Discharge Pressure indicator correctly indicates system gas pressure
6
Record Starting Conditions
•
Inlet Gas Pressure
•
Discharge Gas Pressure
•
Stroke Count
7
Open Air Control Valve to Start ZEVAC® Operation
8
Verify smooth and normal ZEVAC® Operation
9
Always monitor ZEVAC® during operation
OPERATION
Step Check Description
1
Verify Gas Inlet pressure is dropping
2
Verify Gas Discharge pressure is not rising
3
Verify adequate air lubrication levels are maintained throughout operation
4
Verify stroke counters are steadily increasing
SHUTDOWN
Step Check Description
1
Close Gas Intake Isolation Valve
2
ZEVAC® low-pressure shutoff switch should automatically stop ZEVAC function
3
Close Air Control Valve
4
Close Gas Discharge Isolation Valve
5
Open Gas Discharge Vent valve to depressurize ZEVAC® and discharge piping
TRANSPORTATION AND STORAGE
DANGER
Disconnect and Follow Lock-out / Tag-out (LOTO) procedures for all process and energy connections.
WARNING
Stay Clear of Suspended Loads
Observe Accident Prevention regulations in force
Inspect the unit