7
CAUTION: When operating the swivel yoke, take
care not to catch or pinch fingers.
“E”-Block Cylinder Pressure Gauge
Replacement
Warning: High pressure (up to 2400 psi).
Turn OFF all tank valves / supply pressure.
Switch flowmeter on/off switch to the “on” position
and open both valves to vent the pressure.
1. Unscrew the pressure gauge.
2. Install new pressure gauge; verify PTFE tape is
applied to the NPT thread; tighten carefully so
as not to cross thread with the E-Block cavity.
3. Turn on tank valve slowly at location of the
open door.
4. Leak test per Initial and Monthly Check.
“E” Block Removal Instructions (Figure 8)
Warning: High pressure (up to 2400 psi). Turn
OFF all tank valves / supply pressure. Switch
flowmeter on/off switch to the “on” position and
open both valves to vent the pressure.
1. Unscrew (counter clockwise) the (2) Allen
screws that normally secures the block
assembly to the stand. (Use 1/8” Allen wrench.)
2. Unscrew knob and the screw that locks
telescoping post in position.
3. CAUTION: Do not allow post to drop into tube.
Push snap ring out of groove on telescoping
post.
4. Remove O-ring from post.
5. Lift off “E” block.
“E” Block Installation
1. Install new “E” block assembly by reversing
above removal instructions.
Figure 7 – “E” Block with Swivel Yokes
Figure 8 – “E” Block
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