4.
MAINTENANCE
The frequency of required cleaning or maintenance will depend on the quality of the gas supply and the gas
fl ow rate. However, it is recommended that the valve be serviced at least once per year.
The electronic actuator does not require any routine maintenance and should not be tampered with unless by
factory trained personnel. If you are experiencing problems with the actuator contact Hydro Instruments or
your local Hydro Instruments sales representative. If the actuator no longer is able to open the valve, then it
may require replacement.
Parts/Maintenance Kits are offered and contain the parts necessary to accomplish the recommended mainte-
nance as well as a parts diagram.
Note: Please refer to the parts diagram for those items included in the Part &Maintenance Kits.
Maximum Discharge Pressure Settings to Prevent Liquifaction
Cl
2
Service: 40 psig (275 kPa guage)
SO
2
Service: 15 psig (103 kPa guage)
NH
3
service: 40 psig (275 kPa guage)
5
