Raven AccuFlow, Руководство по установке и эксплуатации

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Manual No. 016-0171-496 Rev. C 55
Service and Maintenance
7
Relief Valve Replacement Procedure
Note:
The AccuFlow super cooler relief valve must be replaced every five years from the date of
manufacture to ensure proper operation of the valve
1.
Refer to the Discharging the AccuFlow™ System section on page 50. Ensure that all NH
3
has evaporated
and vapors have been exhausted before proceeding.
2.
Remove the relief valve assembly (P/N 334-0002-005) from the super cooler body.
Note:
The relief valve is located at the opposite end of the super cooler from the cooler inlet.
3.
Apply RectorSeal to the replacement valve threads and thread the valve into the super cooler body.
4.
Tighten the valve using a pipe wrench.
Flow Meter Maintenance and Adjustment
Refer to the following procedure when removing the flow meter for maintenance or service.
FIGURE 4.
Flow Meter Housing and Assembly
1.
To avoid introducing foreign material to the AccuFlow system, brush off the outside of the flow meter before
disassembling and removing the flow meter.
2.
Carefully remove the retaining rings.
DANGER
Anhydrous ammonia can cause severe burning,
blindness, or death. Refer to the
Discharging
the AccuFlow™ System section on page 50
and follow the procedure for bleeding the
AccuFlow system before beginning
maintenance.