Groth 2000A - Manual (Page 16)

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16. If pallet assembly is high enough from the table, insert vacuum pallet-stem [23, 24, 14] assembly
from beneath. Place a short length of pipe (minimum 6” high) beneath the vacuum assembly to hold
it in place until the spring is installed.
17. Place spring [31] over the stem [14]. Use the spring button [16] to compress the spring [31]. Insert
nuts [15] and tighten. Compress the spring using the lower nut [15] until the “A” dimension is
achieved.
WARNING
Failure to properly set a spring loaded valve can result in improper valve operation and can cause a tank failure.
18. Install the ground cable [5]. Use a hex nut to hold in place. Add the screen [26]. Note: Ground cable
will run through the screen.
19. Run a nut down each weatherhood post [27] approximately 0.5” to allow thread engagement when
the weatherhood [13] and crown nuts [21] are installed.
20. Place weatherhood [13] on posts, and tighten with crown nuts [25].
21. Prior to final assembly, verify that the body seat area is free of corrosion, damage or product build-up.
The pallet seat should be cleaned carefully, if necessary. Place pallet assembly on top of body.
22. Slide hinge pin [5] through the body’s ears and the hinge. Secure with cotter pins [6].
23. The valve should be tested on a pressure test stand to verify the settings and evaluate seat tightness
follow instructions on page 19. Mount valve on tank; see Installation on page 6.