Technical data

Owner and operator manual Section 4: Orifice plate installation and removal instructions
3-9008-001 Rev M January 2015
“Quick change” procedure 55
The following are the conditions required to start the removal procedure of the orifice plate:
• The Senior is operating at line pressure
• The Plate Carrier (8DM or 8DMC) is located in the measurement position within the
Body (4)
• The Indicator Pointer (5B) and the Indicator Plate (5A) are installed on the Senior.
• The Slide Valve Shaft (5) is in the CLOSED position
• The Equalizer Valve (1) is in the CLOSED position
• The Bleeder Valve (10B) is in the CLOSED position
• The Sealing Bar Gasket (9A, 9A-HP or 9CF), the Sealing Bar (9 or 9HP), and the Clamping
Bar (12 or 12HP) are fastened to the Top (14)
• Process temperature and ambient temperature values are within range of grease charts
Process pressure values are within the range of grease charts.
Procedure:
To remove the Orifice Plate (13) from the Senior, the operator must first balance the pressure
between the Top (14) and the Body (4).
1. Open the Equalizer Valve (1) one half to two full turns using the Operating Wrench (2).
Step 1 Step 2
FLUID EXPLOSION HAZARD
Follow the instructions below to avoid inadvertent or accidental opening of the slide valve and
the propulsion of fluid or internal components from the Top (4).
Failure to do so will result in serious injury or death.