Cashco 9540L P/P - Manual (Page 6)

IOM-9540L 6
Applicable Range Spring (41)
Valve Split Range Input Product
Stroke Input Signal: 3-15 psig Signals: 3-9, 9-15, 3-7, Size - Model
7-11 and 11-15 psig
P/N* Color Code P/N* Color Code
7/16" -08000- light yellow -08000- light yellow 1/2"-520 & 521 TFE's
1/2" -08000- " -08000- light yellow All sizes 987
9/16" -08000- " -08001- olive green 1" & 1-1/2" 964's
5/8" -08000- " -08001- " 1" 520 & 521 TFE's
3/4" -08000- " -08001- " 2" 2266
7/8" -08000- " -08001- " 2" 520 & 521 TFE's
1-1/8" -08001- olive green -08002- light gray 2" & 3" 964's
PART NO. COLOR COILS
light
gray
830-69-5-08002-00 7 -1/4
olive
green
830-69-5-08001-00 6 -3/4
light
yellow
830-69-5-08000-00 5 -3/4
D. Range Spring Selection:
1. Each positioner unit is supplied with a color-
coded range spring (41). Figure 8 shows the
springs; identification is by the number of
coils. The range spring (41) to be utilized is
indicated above in Table 3.
2. To remove/change the range spring (41) see
Figure 9; hold stroke factor lever (19) against
the travel stop pin (20) and simultaneously
hold the zero thumbscrew (39). Using needle
nose pliers, remove the end of the range
spring (41) hooked to the flapper; then re-
move the opposite end from the zero mecha-
nism. Reverse the procedure with the new/
different range spring (41). Always make sure
that the range spring’s (41) coils are closest
to the flapper lever (38).
3. After removal/change of the range spring
(41), recalibration is required. See Section V.
C. Action Setting:
1. Refer to Table 1 to see the graphical indicated
position of the changeover plate (15). The
indicator arrow is located on the edge of the
baseplate (BP). There are two positions for
this pneumatic switch to be in:
“N” - Direct action
“U” - Reverse action
2. The “N” and “U” are labels cast into the
surface of the changeover plate (15). If neces-
sary, to change action loosen CP screw (4) to
removal. Lift the changeover plate (15) and its
CP gasket (16) and replace them to align the
label with the arrow as desired. Replace and
retighten changeover plate screw (4).
V. CALIBRATION/ADJUSTMENTS
A. ZERO AND STROKE Settings: (See Figure 9)
1. After settings of Section IV have been com-
pleted, place separate manual loaders to sup-
ply the positioner with air (“IAS”) and develop
a variable 3-15 psig signal (“SIG”) as the
input.
2. If the positioner has an input “SIG” of 3-15, 3-
9 or 3-7 (i.e. full stroke is a 15 psig, 9 psig or
7 psig “SIG” respectively for REVERSE ac-
tion), skip Step 3 following and go to Step 4.
3. If the positioner is split ranged for 9-15 or 11-
15 psig “SIG” input (i.e. zero stroke is at a 9
psig or 11 psig “SIG” respectively for DIRECT
action; full stroke is at a 9 psig or 11 psig
“SIG” respectively for REVERSE action), then
follow this procedure:
a. Shutoff supply air (“IAS”, i.e. 0 psig).
b. Release all tension on range spring (41)
by turning zero thumbscrew (39) CCW.
c. See Figure 4; loosen screw (21) securing
the feedback lever (13) on the backside of
the unit to the main shaft (17) using the #5
(5 mm) metric Allen wrench provided.
Manually move the stroke factor lever
(19) away from the tip of the stop pin (20)
a distance of approximately 1/4” - 3/8”
using some form of spacer; i.e. folded
cardboard, etc. Retighten feedback lever
(13) to main shaft (17). Remove the tem-
porary 1/4” - 3/8” spacer.
SECTION V
TABLE 3
*Complete Part Number (P/N) is shown in Figure 8. Table 3 indicates the missing
nos. of the complete P/N. General P/N = 830-69-5-_ _ _ _ _-00.
Figure 8