46
Component Exercise
Section 3: Maintenance
Owner and Operator Manual
January 2015
3-9008-001 Rev M
slide valve should travel freely in both directions with light resistance. Leave the slide
valve in the OPEN position.
Important
The following operation will affect the flowing differential and will be shown on any chart or
instrument, keep records of differential, unless these instruments are isolated.
4.
Rotate the Lower Plate Carrier Shaft (6), located in the Body (4), one turn to raise the
Plate Carrier (8DM or 8DMC).
5.
Rotate the Lower Plate Carrier Shaft (6) one turn in the opposite direction to lower the
Plate Carrier (8DM or 8DMC).
This operation raises and lowers the Plate Carrier (8DM or 8DMC) in and out of the flow stream.
An initially high resistance to turning will be encountered when the Orifice Plate (13) seal (see
“Senior Orifice Fitting Technical Guide: DAN-DIF-TG-11-1003") is loosened from the Senior seal
surface. Resistance to turning will also be present when the Plate Carrier (8DM or 8DMC) is
lowered into its measurement position again.
6.
Return the Plate Carrier (8DM or 8DMC) to the fully seated position in the Body (4).
7.
Close the slide valve and close the Equalizer Valve (1).
8.
Open the Bleeder Valve (10B) to vent the Top (14).
Steps 9 and 10 are ONLY required for the Seniors equipped with grease assisted, metal-to-metal
slide valves. Personnel operating the Seniors equipped with O-Ring seal “soft seat” design slide
valves, skip to step 11.
PRESSURIZED FLUID HAZARD
When opening the bleeder valve (10B) or venting the Top (14) thru the bleeder valve (10B),
direct the released pressurized fluid and/or gas to safe area away from any individual in
accordance with local environment regulations.
The bleeder valve (10B) releases pressurized fluid that may cause contamination and/or
accumulation of volatile gas mixtures. Failure to do so may cause serious injury or death.
