Startup And Adjustment; Maintenance - Emerson Fisher 63EGLP Instruction Manual

Type 63EGLP/63EGLP-16
NOTE: TYPE 63EGLP-16 THE SAME CONSTRUCTION WITH A SMALLER HANDLE.
Figure 7. Type 63EGLP with Dual Pilot-Valve Active Monitoring,
Center Handle Position

Startup and Adjustment

The relief valve is factory set at the set-point pressure
requested. With proper installation completed,
slowly increase pressure while using gauges to
monitor pressure.
Adjustment
Certain configurations or approvals require the pilot to
be secured from adjustment. For assemblies allowing
adjustment, key numbers are referenced in Figure 13. To
adjust relief set pressure of Type 6358EBLP relief pilot,
perform the following procedures.
1. Remove the closing cap (key 12) and loosen the
locknut (key 11).
2. Turn the adjusting screw (key 10) clockwise to
increase or counterclockwise to decrease the relief
set pressure.
3. Introduce pressure to the relief valve slightly higher
than the desired relief set pressure.
Monitor inlet pressure to the relief valve with a
pressure gauge. The relief valve should start
releasing excess pressure as soon as the inlet
pressure to the relief valve exceeds the desired relief
set pressure.
4. If the desired relief set pressure is achieved, tighten
the locknut to lock the adjusting screw and install the
closing cap.
5. Apply wire seal or other adjustment protection
if available.
8
Figure 8. Type 63EGLP 3-Way Ball Valve Stem Check
Figure 9. Type 63EGLP 3-Way Ball Valve Stem Check in
Dual-Pilot Active Monitoring
Shutdown
1. Remove all pressure from the upstream system
or tank.
2. Release all pressure from the main valve and pilot
by opening an upstream vent valve or by slightly
loosening one of the compression fittings on the pilot
supply tubing or actuator tubing until the trapped
pressure starts bleeding out.
3. Once all pressure is released, finger tighten the
compression fitting, then use appropriate wrench to
turn the nut to 1/4 turn.

Maintenance

Relief valve parts are subject to normal wear and must
be inspected and replaced as necessary. The frequency
of inspection and replacement of parts depends upon the
severity of service conditions or the requirements of local,
state and federal regulations.