Page 1
INSTALLATION, OPERATION & MAINTENANCE MANUAL (IOM)
IOM-764P / PD
MODEL 764P & 764PD
PNEUMATIC PRESSURE CONTROLLERS
SECTION I
I. DESCRIPTION AND SCOPE
The Model 764P is a pressure controller used for sensing static pressure, and outputting a pneumatic signal pro por -
tion al to the deviation from the setpoint.
The Model 764PD is a differential pressure controller used for sensing two static pressures (“HIGH” and “LOW”),
and outputting a pneumatic signal proportional to the deviation from the setpoint.
With proper materials selection, the units are suitable for gaseous, liquid or steam service. Refer to Tech ni cal Bulletin
764P-TB for design con di tions and selection rec om men da tions.
Use of oxygen gas as the IAS for a 764P or 764PD is outside the scope of this IOM, and is considered “special
construction”.
Abbreviations Utilized:
12-13
CCW – Counter Clockwise P1 – Inlet Pressure P/P – Pneu mat ic-to-Pneu mat ic
CW – Clockwise P2 – Outlet Pressure REV – Rev o lu tion or Re verse
DIR – Direct PB – Proportional Band SIG – Sig nal
EXH – Exhaust PC – Pressure Controller SRV – Safe ty Relief Valve
IAS – Instrument Air Supply PCV – Pres sure Control Valve TR – Con den sate Trap
PI – Pres sure Indicator V – Vent
SECTION II
II. INSTALLATION
1. A block valve of the globe/needle type should be
installed at the location of the pressure tapping.
Ball, butterfl y or gate valves are not rec om-
mend ed.
2. Recommended sensing tap pipe size is 1/2"
(DN15).
3. Location of pressure sensing tap should be in a
zone not subject to fl ow disturbances. Rec om-
mend a min i mum of 10 pipe diameters upstream
and 10 pipe diameters down stream from any
elbow, tee, valve, etc. that disturbs fl ow.
4. A pressure gauge is recommended at the location
of each tapping. Differential pressure designs
may in cor po rate a differential pressure gauge.
Supply @
P1
IAS @
60-100
psig
Airset
MODEL
764P
Port “A”
TR
EXH
Supply
Supply
PC
SIG
Port “B”
REV
“Output”
LOAD
PROCESS
DIR
P/P
V
PCV
Pigtail
Siphon
SRV
PI
Bypass
TR
Outlet
@ P2
5. A pigtail siphon is required for hot condensing
fl uids, such as steam, to assure a liquid trap at
the controller. The siphon should be installed as
near to the pressure connection(s) on the controller’s diaphragm hous ing as practical.
Blowdown - Drain
(Shaded portion for steam/condensate systems)
Blowdown - Drain
Figure 1: Recommended Piping Schematic for Pres sure
Reducing Control Valve with Positioner
Page 2
6. It is recommended as a good practice to locate
the controller as close as practical to the pressure
tapping and at a similar elevation. For installations
where the controller was factory mounted on a
control valve unit, the pressure tapping should
be within 6 - 10 feet (2 - 3 meters) of the control
valve. (Remember to compensate for tappings
located above the elevation of the controller for
any liquid pressure head that may occur.)
7. The controller’s pneumatic output signal (SIG)
piping or tubing should be limited in length, and
con sid er ation must be given for the ultimate
pur pose of the SIG at its fi nal destination. The
fol low ing are recommended practices:
Purpose
SIG to Positioner
SIG to Supply Booster
LOAD to Actuator
1/4" O.D.
1/4" O.D.
1/4" O.D.
Tubing
Size Max Length*
100 ft.
100ft.
10 - 12 ft.
* Contact factory for longer lengths.
8. 764P controllers may be mounted by various
meth ods:
With Option -23; Field Bracket Mounting to Structure
Figure 3
Field Pipe Nipple Mounted. Recommend pipe tap
on top or side of pipe.
Bracket Mounted. Includes a bracket with
ma chine screws to allow attachment to a fi xed
struc tur al ap pend age; requires specifying Option
-23. (This is the method utilized when the 764P/
PD is spec i fi ed to be mounted to a control valve
ac tu a tor.)
Output Pipe Nipple Mounted to Model 2266 Control Valve
Figure 4
Figure 2
Factory Bracket Mounted to Ranger QCT Control Valve
2
Field Pipe Nipple Mounted to Piping
Figure 5
IOM-764P / PD
Page 3
Panel Mounted. Not factory provided. Requires
fi eld provision of a panel opening and support
bracket per the below dimensions:
Panel
#10-32 machine
screws
PANEL CUTOUT
(Front View)
Countersink hole
for #10-32 fl at heat
machine screw.
Figure 6
Panel Mounted Assembly View
INSTALLED ASSEMBLY
(Bottom View)
#10-32 fl at head
machine screw and nut
Adjusting Screw
9. It is recommended that a 764PD be bracket or panel
mounted. A 764PD can be pipe nipple mounted
from 1/4" NPT connection.
10. Clean the piping and tubing of all foreign materials including chips, burrs, dirt, etc., prior to use.
Use care in applying thread sealant or TFE tape
to prevent excess material from entering the con nect ing pipe or tubing.
11. Controllers may be oriented in any position in doors.
Outdoors, recommended locations are with the
main lon gi tu di nal axis in a horizontal position, or
with the pneumatic sensor head directed down wards. Exhibit care to assure rainwater is pre vent ed
from entering the unused exhaust port (Port A or
Port B).
12. Connect piping/tubing per Tables 1 and 2.
13. 764P/PD’s can operate with a lubricated, nondried air supply. However, good practice and other
system com po nents (airsets, , relays, etc.) dictate
use of the highest quality air supply avail able.
If air can not be practically dried and bears oil,
coalescing fi lters should be utilized to remove as
much oil and water as possible, as well as particles
over 20 microns. Desiccant dried air is absolutely
required for outdoor installations ex posed to freezing temperatures.
14. For 764PD the system must be designed such that
the “HIGH” pressure is always at a higher value
than the “LOW” pressure is at the same time. If
the expected HIGH and LOW pressures reverse
with respect to each other, the unit will become
inoperative, and the output will increase towards full
IAS pressure of 18–20 psig (1.24–1.38 Barg).
TABLE 1
Controller
IAS to Port
A
B
Process
Pressures
Above Atm.
Pressure
Controller
IAS to Port
B
A
Vacuum
Process
Below Atm.
Pressure
NOTE: 764PD cannot be utilized in vacuum service.
Controller
IAS to Port
B *
A
B *
A
Direct
Supply
Exhaust
Increase in
pressure Increases
output signal
Increase in
differential pressure
Increases output
signal
Direct
Supply
Exhaust
Increase in
vacuum
Increases output
signal
TABLE 2
Pressure Reducing Applications
Control Valve Controller
ATO-FC
(REVERSE)
ATC-FO
(DIRECT)
Back Pressure/Relief Applications
ATC-FO
(DIRECT)
ATO-FC
(REVERSE)
* Common applications
764P
Action
Reverse
Exhaust
Supply
Increase in
pressure Decreases
output signal
764PD
Increase in
differential pressure
Decreases output
signal
764P
Action
Reverse
Exhaust
Supply
Increase in
vacuum
Decreases output
signal
Actions
ReverseIncrease in pressure
decreases output signal.
Valve "fails closed".
DirectIncrease in pressure
increases output signal.
Valve "fails open".
Actions
ReverseIncrease in pressure
decreases output signal.
Valve "fails open".
DirectIncrease in pressure
increases output signal.
Valve "fails closed".
Uncommon applications
IOM-764P / PD
3
Page 4
SECTION III
III. PRINCIPLE OF OPERATION
1. The 764 controllers employ laminar fl ow to
pro duce the 3-15 psig (nominal 0.2–1.0 Barg)
output signal. Lam i nar flow eliminates the
need for range springs, levers, pivots and
other parts that pro duce friction and lost motion.
2. The sensing diaphragm in the 764P and 764PD
has a high spring rate and any change in the
sensed pressure produces a minute diaphragm
movement which strokes the sensor plate.
The sensor plate, in turn, throttles the fl ow
of in stru ment air through the sensor to develop the 3-15 psig (0.2-1.0 Barg) output signal.
3. On direct acting 764P controllers (see Figure 7) the
supply air enters PORT A and passes through the
pro por tion al band restriction. With an increase in
the con trolled pres sure the fl ow through the sen-
sor is reduced which in creas es the output signal.
The proportional band restriction regulates the
fl ow rate of supply air into PORT A. PORT B is
the ex haust port. A 764PD op er ates the same.
5. Closing (CW rotation) the proportional band ad just ing screw re duc es the proportional band. Open ing the screw in creas es the pro por tion al band.
6. The setpoint adjustment positions the sensor so
the diaphragm must defl ect its maximum for its
highest con trolled pres sure setting and hardly
de fl ects for the lowest con trolled pressure setting.
4. On reverse acting 764P controllers (see Figure
8) the supply enters PORT B (not PORT A). With
an increase in the controlled pressure, the supply
air fl ow ing through the sensor decreases, which
re duc es the output signal. The proportional band
restriction regulates the fl ow of exhaust through
PORT A. A 764PD operates in a similar manner.
OUTPUT SIGNAL
SUPPLY AIR
EXHAUST (VENT)
LOWER SENSED PRESSURE
HIGHER SENSED PRESSURE
4
IOM-764P / PD
Page 5
IV. STARTUP
SECTION IV
1. Prior to pressurizing through the airset, dis con nect
the instrument air supply (IAS) at the airset inlet,
open the IAS block valve and blow the piping clear
of any debris. Reconnect the piping and open
the isolation valve. Set the airset to 18 psig (1.2
Barg).
2. The unit is shipped with the proportional band
(PB) set at a minimum value of approximately 3
percent. Matchmarks are factory placed on the
housing (1) and the PB needle valve (3) head
approximately perpendicular to the screw driv er
slot of the needle valve (3) head.
CAUTION
Do not rotate the needle valve (3) CW be yond this
location as the unit will be ren dered in op er a tive.
Rotate needle valve (3) CCW approximately 1/8 of
a rev o lu tion in cre ments at each adjustment. 1-1/2
rev o lu tions are the max i mum ro ta tion avail able
from the 3 per cent min i mum PB position to the
20% max i mum PB position.
3. Units are factory calibrated to ap prox i mate ly midrange; i.e. 50-150 psig (3.4-10.3 Barg) range will
have setpoint at approximately 100 psig (6.9 Barg).
It is rec om mend ed that the unit be fi eld calibrated
following in stal la tion and prior to startup. (See
Sec tion VI. CAL I BRA TION for de tailed pro ce dure.)
Adjust setpoint by rotating ad just ing screw (2.3);
turn CCW to de crease setpoint, or turn CW to
increase setpoint.
4. Start the process, observing the output gauge of
the controller and the process pressure gauge.
(For 764PD's, always pressure the HIGH pres sure
before the LOW pressure.) As sure that the out put
is chang ing (de creas ing from 18 psig (1.2 Barg)
if reverse acting, or in creas ing from 0 psig (0.0
Barg) is direct acting) as the controller ap proach es
setpoint. Con fi rm prop er action of con trol valve.
Vary the process fl ow and observe the reaction
of the controller to the dis tur banc es.
5. If the controller seems to be “hunting” with over shoot and undershoot of setpoint, ad di tion al PB
should be add ed. Rotate the nee dle valve (3) CCW
in increments of 1/8 rev o lu tion. NOTE: When PB
is adjusted, setpoint will nor mal ly re quire slight
resetting; rotate the adjusting screw (2.3) as re quired. Repeat until best stability is ob tained, or
up to the maximum of 1-1/2 rev o lu tions.
CAUTION
Always make ad just ments in small in cre ments and
wait un til reactions can be ob served be fore making
fur ther ad just ments.
6. If “hunting” persists after com ple tion of Step 5, the
controller can be slowed down by reducing airset
supply pres sure down to 16 psig (1.1 Barg) in 1 psi
(0.07 Bar) increments. If this procedure is used,
repeat Step 5.
7. If “hunting” persists after completion of Step 6, rotate the needle valve on the sensing line “to wards
closed” to provide “snub bing” action. DO NOT
FULLY CLOSE SENSING NEEDLE VALVE!
V. MAINTENANCE
A. General:
1. Refer to Figure 12 for basic pressure con trol ler. Refer to Figure 13 for differential pressure
controller.
2. Maintenance pro ce dures hereinafter are
based on removal from the process piping
system where in stalled. When removing the
tubing, put a tag on the tubing which port, “A”
or “B”, was utilized.
IOM-764P / PD
SECTION V
3. If complete overhaul is undertaken, it is rec om mend ed that the pneumatic circuit over haul be
completed prior to diaphragm re place ment.
4. Lightly grease all sensor sub-assembly (2)
O-rings (5) (6) upon re place ment with lith i um
grease; cloth wipe all excess grease.
B. Diaphragm Replacement:
1. If diaphragm (12) has cracked and leaked,
com plete unit must be overhauled including
the pneumatic circuit portion.
5
Page 6
2. Remove cap screws (19) and nuts (18). Re move
diaphragm upper case (13) and upper diaphragm
O-ring (16). Remove diaphragm (12), and SST
diaphragm cover (17) if sup plied. Remove lower
case diaphragm O-ring (16) and pusher post O-ring
(23) for 764PD. In spect for any corrosion damage
and/or per ma nent deformation of the diaphragm
(12) and diaphragm cover (17); if bent, replace.
3. For 764PD, separate at the screwed joint between
the diaphragm lower case (14) and the adapter (21)
turning the diaphragm case (14) CCW (viewed from
di a phragm case end). When separated, remove
the adapter O-ring (22) and replace. Reinstall the
adapter (21) and diaphragm lower case (14).
4. For the 764PD, replace diaphragm O-ring (16) for
the lower case (14) and the pusher post O-ring
(23).
sub-assembly (2) end plate (2.2), and pull it
outwards from the housing (1). Watch for the
sensor pin (2.4) as the sensor sub-assembly
(2) is withdrawn, as pin (2.4) easily falls out and
could be lost.
Figure 9: Sensor Sub-Assembly (2)
5. Replace diaphragm (12) and diaphragm cover(s)
(17), if supplied. Assure that the di a phragm cover
(thin SST material) (17) is placed on side(s) exposed to the process fl uid(s). (764PD requires both
sides to be cov ered, if supplied with diaphragm
covers (17).
6. Replace with new upper case diaphragm O-ring
(16), upper case (13), and cap screws with nuts
(19 and 18).
7. Recalibrate per Section VI.
C. Pneumatic Circuit Overhaul:
1. Remove output pressure gauge (11) and test
cal i bra tion. If gauge is off ± 2 psi (±0.14 Bar)
recommend replacement.
2. Remove lower diaphragm case (14) from the
pneu mat ic housing (1) at the point where screwed
to geth er. Rotate the diaphragm case (14) CCW
(viewed from di a phragm case end) to loosen. For
764PD: Remove adapter (21) together with lower
diaphragm casing (14) at the screwed joint between the pneumatic hous ing (1) and the adapter
(21). Rotate the adapt er (21) CCW (viewed from
diaphragm case end) to loosen. Once loos ened,
ori ent the unit along a hor i zon tal axis to pre vent
internal parts from fall ing from within when separated. DO NOT RE MOVE PUSHER-POST (24)
FROM 764PD.
3. Remove sensor plate (15.1) (15).
4. Remove nameplate screw (9), nameplate (10),
and four housing screws (8). Grasp the sensor
5. Remove sensor plate O-ring (6).
6. Take note of the position of the PB needle
valve (3) by rotating it CW until it seats: count
the exact amount of rotation in 1/8 rev. in cre ments; record the count in Table 3. Re move
the PB needle valve (3) with O-ring (7) by
rotating CCW. Remove O-ring (7).
TABLE 3
Part
PB Needle
Valve (3)
DESCRIPTION
OF ROTATION
No. of Revolutions rotated CW to
fully seat
NO. OF
REVOLUTIONS
7. Remove the three sensor O-rings (5) from the
sensor (2.1).
NOTE: Typically, additional dis-assembly of
the sensor sub-assembly (2) is not required.
If it is necessary to replace any of the sensor
sub-assembly parts (2.1, 2.2, 2.3, 2.4, 2.5) a
complete new sensor sub-assembly must be
installed. Contact the factory for assistance.
8. Take all the metal parts except the gauge (11)
and nameplate (10) and clean in suitable solvent.
Clean and air blow all drilled air passages.
9. Install pressure gauge (11) into the pneumatic
hous ing (1) using suitable thread sealant.
10. Install new O-rings (5) on sensor sub-assembly
(2). Check the two dimensions given in Figure 10
of the sensor sub-assembly as “fi nal set tings”.
6
IOM-764P / PD
Page 7
X
5/16”
X = 1-27/32" (46.8mm) all ranges
except 50–150 psig = 1-25/32" (45.2mm)
The rounded end of the sensor plate (15) will touch
the diaphragm (16) for the 764P, or the pusher post
(24) of the 764PD.
NOTE: The previous description is for 764PD’s and
764P’s in pressure ranges 2" - 30" Hg, 1-30 psig,
20-100 psig, 50-150 psig and 90-500 psig; it is
also for 764PD’s for differential pressure ranges
1-30, 20-100 and 50-150 psid. Refer to Figure 12
“Di a phragm Sub-Assembly for 450-2500 psig”.
Ob serve that the sensor plate (15) consists of a
four part sub-assembly as follows:
15.1 Sensor Plate
15.2 Adaptor
15.3 Retaining Ring
15.4 Spring
Figure 10
Sensor Sub-Assembly
Assemble per these Dimensions
11. Slide the sensor sub-assembly (2) back into
the hous ing (1) so as not to damage the sensor
O-rings (5). The fi nal position should have the
sensor pin (2.4) directly above the center of the
adjusting screw (2.3). Install the four end plate
screws (8). See Figure 11.
17. Re-engage the pneumatic housing (1) to the
di a phragm lower case (14) of the 764P, or
the adapter (21) of the 764PD; rotate CW.
Wrench tighten.
18. Calibrate per Section VI.
12. Install the nameplate (10) and nameplate
13. Install the PB needle valve (3) with a new
14. Place a new sensor plate O-ring (6) down into
IOM-764P / PD
Figure 11
screw (9).
O-ring (7). Screw the needle valve (3) CW
until seated, then back out to same position
re cord ed in Table 3 prior to dis as sem bly.
the housing (1) cavity next to the end of the
sensor (2.1). Slide the sensor plate (15) into
the housing (1); the fl at portion of the sensor
plate (15) should seat against the O-ring (6).
7
Page 8
VI. SHOP CALIBRATION
1. Install a 1/4" pipe plug in the “OUTPUT” port of
unit.
SECTION VI
5.1. FOR DIRECT ACTION: If the output pressure
gauge is at/near 15 psig (1.03 Barg) increase the
setpoint by rotating the adjusting screw (2.3) CW
until the output decreases to 9 psig (0.62 Barg)
2. Provide an 18 psig (1.2 Barg) IAS to the proper
port as determined by Table 1, Section II.
3. Leave PB as set in Section V.C.13. If this setting is unknown, rotate the PB needle valve (3)
CW until seated. Rotate needed valve (3) CCW
until “indented matchmarks” align; this is ap prox i mate ly1/8–1/4 of a revolution.
4.1. Provide a known pressure (compressed nitrogen,
etc.) equal to the desired setpoint to the di a phragm
“PRO CESS” connection for the 764P.
4.2. For the 764PD, place a known static pressure
equal to the desired differential pressure setpoint to
the “HIGH” process connection; leave the “LOW”
process connection vented to at mo sphere.
VII. TROUBLE SHOOTING GUIDE
1. No controller response
If the output pressure gauge is at/near 0 psig
(0.0 Barg) decrease the setpoint by rotating the
ad just ing screw (2.3) CCW until the output rises
to 9 psig (0.62 Barg).
5.2 FOR REVERSE ACTION: If the output pressure
gauge is at/near 15 psig (1.03 Barg) decrease
the setpoint by rotating the adjusting screw (2.3)
CCW until the output decreases to 9 psig (0.62
Barg).
If the output pressure gauge is at/near 0 psig
(0.0 Barg) increase the setpoint by rotating the
ad just ing screw (2.3) CW until the output rises
to 9 psig (0.62 Barg).
NOTE: If the unit cannot be shop calibrated to either
the upper or lower value of the stated range, refer
to statement in VII.7.A. for recommendation. Re peat
shop calibration.
SECTION VII
Possible Cause Remedy
A. No air supply.
B. Improper action; port "A" or "B"
connections reversed.
C. Check process isolation valve and line to
see if open and/or clear.
D. Improper pressure tap location.
E. PB needle valve is fully closed.
F. Ice formation.
G. Final element operation problem; i.e.
control valve, positioner, solenoid, etc.
2. Improper control valve action.
Possible Cause Remedy
A. Mismatch of pneumatic hardware.
B. Improper action; port "A" or "B"
connections are reversed.
A1. Check to see if air is available at airset.
A2. Check to see if airset fi lter and/or dripwell is plugged.
B. Reference Tables 1 & 2 herein for desired action and proper
port; reverse as required.
C1. Open block needle valve on process.
C2. Disconnect piping/tubing at both ends, blow to determine
if obstructed. Carefully blow needle valve to clear obstruction;
use caution commensurate with fl uid handled in accordance
with Owner's procedures.
D. For relief applications, tapping is upstream; for reducing
applications tapping is downstream of the control valve.
E. Open at east to alignment of matchmarks on valve's screw
head and housing.
F. Use dry air as an IAS medium in cold weather. Thaw as
necessary by use of air heater. Trace as necessary.
G. Reference instructions for operation of fi nal element.
A. Check bench set of actuator. Consider positioner or
booster.
B. Reference Tables 1 and 2 herin for desired action
and proper port; reverse as required.
8
IOM-764P / PD
Page 9
3. Erratic Operation; Rapid Cycling.
Possible Cause Remedy
A. Insuffi cient PB
B. Improper air supply.
C. Pulsing process sensing.
D. Non-Correctible process dynamics.
4. Sluggish operation; slow action.
Possible Cause Remedy
A. Restricted fl ow(s).
B. Insuffi cient air supply. B. Increase supply up to 18-20 psig.
C. Too much PB.
D. Improper range selection.
E. Too large actuator. E. Add an air booster or positioner at the actuator.
F. Use of alcohols, glycols in freezing
weather; dissolved lubricant on O-rings.
A. Increase PB in 1/8 rev. increments by turning the needle valve
CCW. Reset setpoint as required (Max PB at 1-1/2 revs.).
B1. Supply pressure too high. Reduce airset output supply pres
sure to 15-18 psig.
B2. Air supply unsteady. Replace airset.
C1. Snub process needle valve as far as practical without shutting
off. Observe process gauges carefully.
C2. Poor location of process pressure tap. Evaluate and consider
relocation.
D1. Bypass control valve positioner and directly load actuator.
D2. Review sizing of control valve, may be oversized. Use re
stricted trim if necessary.
D3. Consult factory
A1. Open process needle valve adequately. Disconnect tubing and
blow sensing line.
A2. Check equivalent output tubing line length against those
indicated herein in Section 11.7. Relocate controller, or
consider adding an air booster or positioner at the control
valve.
A3. Check for mashed or pinched tubing.
A4. Installation debris. Air blow line.
A5. Ice in lines. Use dry air supply.
C. Decrease PB in 1/8 rev. increments. Reset setpoint as
required.
D. Use the lowest range possible, if available to obtain the best
response.
F. Remove sensor sub-assembly and lubricate O-rings.
5. Calibration Erratic; frequent setpoint adjustments.
Possible Cause Remedy
A. Sensing diaphragm loose at screwed
connection to housing or adapter.
B. Bent sensing diaphragm.
C. Air supply debris.
6. Leakage of process fl uid.
Possible Cause Remedy
A. Sensing diaphragm O-ring failure.
B. For 764PD, pusher post O-ring failure.
C. Diaphragm failure. C. Corrosive attack. Consult factory.
IOM-764P / PD
A. Piping weight is cantilevered off of process connections or
instrument air connections causing unscrewing, and effecting
internal clearances. Change piping or add supports as required.
B. Inspect diaphragm; replace if bent. Bent diaphragm indicates an
overpressure condition; correct if necessary.
C1. Provide a cleaner air supply or piping source.
C2. Ice in lines. Correct as necessary.
A1. Improper installation causing overheating by not provifi ng a
loop seal for hot condensing fl uids; i.e. steam.
A2. Chemical attack. Consult factory.
B1. Same as A1. above.
B2. Same as A2. above.
9
Page 10
7. Cannot reach upper or lower pressure levels of stated range.
Possible Cause Remedy
A. Improper sensor sub-assembly setting. A. Remove sensor sub-assembly. Check dimension to those
indicated in Figure 10. If dimension is correct, and high setting
cannot be reached, decrease dim. "X" by rotating sensor end
plate 1/2 revolution CW; reverse for lower setting.
SECTION VIII
VIII. ORDERING INFORMATION
NEW REPLACEMENT UNIT vs PARTS "KIT" FOR FIELD REPAIR
To obtain a quotation or place an order, please retrieve the Serial Number and Product Code that was stamped
on the metal name plate and attached to the unit. This information can also be found on the Bill of Material
("BOM"), a parts list that was provided when unit was originally shipped. (Serial Number typically 6 digits).
Product Code typical format as follows: (last digit is alpha character that refl ects revision level for the product).
–
NEW REPLACEMENT UNIT:
Contact your local Cashco, Inc., Sales Rep re sen ta tive with the Serial Number and Product code.
With this information they can provide a quotation
for a new unit including a complete description,
price and availability.
CAUTION
Do not attempt to alter the original construction of any
unit without assistance and approval from the factory. All
purposed changes will require a new name plate with appropriate ratings and new product code to accommodate
the recommended part(s) changes.
–
7
PARTS "KIT" for FIELD REPAIR:
Contact your local Cashco, Inc., Sales Rep re sen ta tive with the Serial Number and Product code.
Identify the parts and the quantity required to repair
the unit from the "BOM" sheet that was provided
when unit was originally shipped.
NOTE: Those part numbers that have a quantity indicated
under "Spare Parts" in column "A” refl ect minimum
parts required for inspection and rebuild, - "Soft
Goods Kit". Those in column “B” include minimum
trim replacement parts needed plus those "Soft
Goods" parts from column "A".
If the "BOM" is not available, refer to the crosssectional drawings included in this manual for part
identifi cation and selection.
A Local Sales Representative will provide quotation
for appropriate Kit Number, Price and Availability.
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. We reserve the right to modify
or improve the designs or specifi cations of such product at any time without notice.
Cashco, Inc. does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and maintenance of any
Cashco, Inc. product remains solely with the purchaser.
10
IOM-764P / PD
Page 11
Sensor Plate
Sub-Assembly
Sensor Plate Sub-Assembly
450-2500 psig Range
Figure 12
Model 764P
Available Ranges
psig (Barg)
1-30 (0.7-2.1)
20-100 (1.4-6.9)
50-150 (3.5-10.3)
90-500 (6.2-34.5)
450-2500 (31.0-172.4)
2"-30" Hg Vac. (50-760 mm Hg Vac. )
ITEM NO. DESCRIPTION
1 Housing
2 Sensor Sub-Assembly
2.1 Sensor *
2.2 End Plate *
2.3 Adjusting Screw *
2.4 Sensor Pin *
2.5 Retsainer Clip *
3 Needle Valve
5 O-Ring - Sensor
6 O-Ring - Sensor Plate
7 O-Ring - Needle Valve
8 End Plate Screw
9 Name Plate Screw
10 Name Plate
11 Gauge
IOM-764P / PD
ITEM NO. DESCRIPTION
12 Diaphragm
13 Upper Case
14 Lower Case
15 Sensor Plate Sub-Assembly
15.1 Sensor Plate
15.2 Adaptor
15.3 Retaining Ring
15.4 Spring
16 O-ring – Diaphragm
17 Diaphragm Cover (if supplied)
18 Nut
19 Screw
20 Vent Plug
* Not Sold as individual parts.
(Purchase Sensor Sub_Assembly 2)
11
Page 12
1/4" NPT
Tap
ITEM NO. DESCRIPTION
1 Housing
2 Sensor Sub-Assembly
2.1 Sensor *
2.2 End Plate *
2.3 Adjusting Screw *
2.4 Sensor Pin *
2.5 Retainer Clip *
3 Needle Valve
5 O-Ring - Sensor
6 O-Ring - Sensor Plate
7 O-Ring - Needle Valve
8 End Plate Screw
9 Name Plate Screw
10 Name Plate
Cashco, Inc.
P.O. Box 6
Ellsworth, KS 67439-0006
PH (785) 472-4461
Fax. # (785) 472-3539
www.cashco.com
email: sales@cashco.com
Printed in U.S.A. 764P/PD-IOM
Cashco GmbH
Handwerkerstrasse 15
15366 Hoppegarten, Germany
PH +49 3342 4243135
Fax. No. +49 3342 4243136
www.cashco.com
Email: germany@cashco.com
Cashco do Brasil, Ltda.
Al.Venus, 340
Indaiatuba - Sao Paulo, Brazil
PH +55 11 99677 7177
Fax. No.
www.cashco.com
Email: brazil@cashco.com
Available Ranges
1-30 psid (.07-2.1 Bard)
20-100 psid (1.4-6.9 Bard)
50-150 psid (3.5-10.3 Bard)
Figure 13
Model 764PD
ITEM NO. DESCRIPTION
11 Gauge
12 Diaphragm
13 Upper Case
14 Lower Case
15 Sensor Plate
16 O-ring – Diaphragm
17 Diaphragm Cover (if supplied)
18 Nut
19 Screw
21 Adaptor
22 O-Ring – Adaptor
23 O-Ring – Pusher Post
24 Pusher Post
* Not Sold as individual parts.
(Purchase Sensor Sub-Assembly 2)
Loading...