Type ACE97
9
Table 2. Diagnostic Analysis Pressure Ranges
DIAGNOSTIC STATUS
Equal to inlet supply pressure
Pilot and main valves are closed.
Tank pressure is at or above set pressure.
Slightly below inlet supply pressure
Pilot valve supplies gas to tank. Tank
pressure is just below set pressure.
Well below inlet supply pressure
Pilot and main valves are both
supplying gas to the tank. Tank
pressure is below setpoint.
Shutdown
In any installation it is important to open and close
valves slowly and to close the inlet shutoff valve rst
when shutting down the system.
Maintenance
Valve parts are subject to normal wear and must be
inspected and replaced as necessary. The frequency
of inspection and replacement of parts depend on the
severity of service conditions and the requirements
of local, state, and federal regulations. Due to the
care Regulator Technologies takes in meeting all
manufacturing requirements, use only replacement parts
manufactured or furnished by Regulator Technologies.
All O-rings, gaskets, and seals should be lubricated
with a good grade of general purpose lubricant and
installed gently rather than forced into position.
Approved lubricants, sealants, thread protectors,
and adhesives are as follows:
Lubricants: Dow Corning
®
#111, Dow
Corning
®
#3452 Chemical Resistant Lubricant
Thread Protector: Anti-Seize
Sealant: Loctite
®
PST #592,
Polytetrauoroethylene (PTFE) Tape
Adhesive: Loctite
®
#222
Be certain that nameplates are updated to accurately
indicate any eld changes in equipment, materials,
service conditions, or pressure settings.
Monthly Maintenance
1. Visually inspect the unit to ensure tight
connections, tight seals, and safe operation.
2. Observe the pad and depad (tank blanketing
and vapor recovery) pressures.
3. Inspect the inlet pressure for the proper range
(stamped on the valve nameplate).
Table 3. Diagnostics Table: C
v
1 through 4, Inlet Pressure Range Spring 25 to 50 psig / 1,7 to 3,4 bar
ACTUAL INLET SUPPLY
PRESSURE TO VALVE
DIAGNOSTIC PORT PRESSURE
Pressure when Pilot Starts to Open Pressure when Main Valve Starts to Open Pressure when Main Valve is Fully Open
psig bar psig bar psig bar psig bar
25 1,7 24 1,7 9 0,62 2 0,14
30 2,1 29 2,0 13 0,90 6 0,41
35 2,4 34 2,3 16 1,1 9 0,62
40 2,8 39 2,7 20 1,4 13 0,90
45 3,1 44 3,0 24 1,7 17 1,2
50 3,4 49 3,4 28 1,9 21 1,4
Table 4. Diagnostics Table: C
v
1 through 4, Inlet Pressure Range Spring 51 to 120 psig / 3,5 to 8,3 bar
ACTUAL INLET SUPPLY
PRESSURE TO VALVE
DIAGNOSTIC PORT PRESSURE
Pressure when Pilot Starts to Open Pressure when Main Valve Starts to Open Pressure when Main Valve is Fully Open
psig bar psig bar psig bar psig bar
51 3,5 50 3,4 29 2,0 5 0,35
60 4,1 59 4,1 36 2,5 12 0,83
70 4,8 69 4,8 43 3,0 19 1,3
80 5,5 79 5,4 51 3,5 27 1,9
90 6,2 89 6,1 59 4,1 34 2,3
100 6,9 99 6,8 66 4,5 42 2,9
110 7,6 109 7,5 74 5,1 50 3,4
120 8,3 119 8,2 81 5,6 57 3,9
(20 Seiten)
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