Delta Faucet DF-745 Manual Do Utilizador
Appendix B – Hydrogen Service Safety System DF-745
91
adequate pump cooling. The purge flow rate is set to 30 scfh as indicated on a
rotometer mounted on the side of the pump enclosure. An in-line flow switch will
trip at a flow rate of less than 26 scfh assuring adequate flow. Loss of purge flow
breaks the contacts in the flow switch, which in turn trips a mercury relay that
removes power to the pump.
rotometer mounted on the side of the pump enclosure. An in-line flow switch will
trip at a flow rate of less than 26 scfh assuring adequate flow. Loss of purge flow
breaks the contacts in the flow switch, which in turn trips a mercury relay that
removes power to the pump.
To disable the Hydrogen Safety Service System, use the GSF screen to indicate that
hydrogen is not included in the process gas by entering 0%. See page 49 for
additional information on setting GSF.
hydrogen is not included in the process gas by entering 0%. See page 49 for
additional information on setting GSF.
CAUTION
The purge flow out of the pump enclosure may contain sample gas
and should be appropriately vented.
and should be appropriately vented.
CAUTION
After passing through the moisture cell and orifice, the sample is
under vacuum and any leak in the system would result in ingress of
ambient rather than release of sample gas to ambient. Accordingly,
the sample outlet should be vented appropriately to assure adequate
dilution.
under vacuum and any leak in the system would result in ingress of
ambient rather than release of sample gas to ambient. Accordingly,
the sample outlet should be vented appropriately to assure adequate
dilution.
CAUTION
The Hydrogen Service Safety System is designed to be safe as
provided by the factory when operating as described in the
Operating Instruction Manual. DO NOT make additional
penetrations in the enclosure. If there is a need to do so, please
contact the factory. Additional penetrations made in the enclosure
(or failure to properly fasten the enclosure door) will allow
additional influx of ambient oxygen and may defeat the case purge
safety mechanism. A pressure relief valve is installed to prevent
over pressurization of the enclosure.
provided by the factory when operating as described in the
Operating Instruction Manual. DO NOT make additional
penetrations in the enclosure. If there is a need to do so, please
contact the factory. Additional penetrations made in the enclosure
(or failure to properly fasten the enclosure door) will allow
additional influx of ambient oxygen and may defeat the case purge
safety mechanism. A pressure relief valve is installed to prevent
over pressurization of the enclosure.
CAUTION
Do not open the pump enclosure door unless AC power is shut off.