Groth 1660A - Manual (Page 11)

Page 11 of 16
Replace the bushing(s) [10] and/or O-Ring
seal [67] in the spindle guide sub-assembly.
Insert the spindle tube and make sure that it
moves freely. Insert the spindle rod sub-
assembly into the tube and seat the tube
against the upper cap. Install the lower
spindle cap [25] and screw the rod into the
swivel ball on the pallet sub-assembly. Hold
the support plate [4] and tighten the swivel ball
[24] securely.
Place a gasket [20] on the actuator mounting
surface of the valve body. Turn the lower
actuator housing [14] with spindle and pallet
assembly upright. Place two temporary blocks
between the housing and the diaphragm
support plate [4]. This will hold the pallet
suspended above the body seat when it is
lowered into the body. On small valve sizes,
the spindle/seat assembly can be supported
manually.
Carefully lower the assembly into the body.
Raise the diaphragm support plate manually
and remove the wood blocks. Lower the
diaphragm support plate gently, while aligning
the diaphragm hole pattern with the body
studs, until the pallet assembly is seated in
the valve body. Install the diaphragm [15]
onto the studs.
Note: If the Model 1402A pilot is used, a
spacer gasket [58] is installed between the
lower actuator housing [14] and the
diaphragm [15]. The pilot will be connected to
a hole on the actuator mounting surface of the
valve body. In this case, the odd hole in the
body gasket [20], lower actuator housing [14]
and spacer gasket [58] must align with the
body hole.
WARNING
Failure to properly align gaskets and the
lower housing on valves equipped with the
Model 1402A pilot will prevent the valve
from opening.
2
14
15
58
20
20
Figure 8: 1402A Pilot Connection
Note: If the diaphragm is not attached to the
support plate, install the diaphragm after the
pallet assembly is in place. Lay it on top of
the support plate and align the holes with the
studs.
Install the second gasket [20], upper actuator
housing [2], lock washers [8] and hex nuts [6],
and tighten evenly in a criss-cross pattern.
Wrap the threads of the pipe nipple [1] with
Fluoropolymer tape and thread it into the
coupling in the upper actuator housing [2].
Install the pilot valve [51] and reconnect the
tubing between the body pickup fitting and the
pilot inlet port.