Ransburg Serial Analog Module A11012 User Manual
Page 17
LN-9258-07.2
Serial Analog Module - Installation
14
REPLACEMENT / UPGRADE OF
75118-01 ANALOG MODULE WITH
A11012-00 SERIAL ANALOG MODULE
Note: The Serial Analog Module part number A11012-00 will regulate the output pressure from 10 to 90 psi.
Operation outside of these limits is not recommended.
This procedure is only valid for systems using Watts brand pilot operated regulators (volume boosters) model
R119. It describes how to convert the pilot regulator to a non-bleed pilot, X71 model. The model number is
listed on the side label. See picture below:
PART NUMBER LABEL IN ONE OF
THESE 2 LOCATIONS
TOP DIAPHRAGM
Failure to follow the instructions below will result in fluctuating air pressure out of the Serial Analog module.
Due to a difference in regulators, the R119 pilot operated regulator either needs to be replaced with a non-
bleed X71 model, or the top diaphragm must be replaced. A new pilot operated regulator can be ordered
with the X71 suffix or the non-bleed diaphragm for the installed pilot regulator can be obtained from Parker
Pneumatics / Watts FluidAir at (269) 629-5575. For the correct part number, reference the table below:
Existing Pilot Regulator
Port Size
Diaphragm to Convert to X71
Maximum Air Flow
R119-02J
1/4"
RK118-X20Y
100
SCFM
R119-03J
3/8"
RK118-X20Y
110
SCFM
R119-04J 1/2"
RK118-X20A
150 SCFM
Diaphragm replacement procedure
1.
Remove the top screws and remove the old diaphragm. Replace with the new diaphragm and torque
screws to 25 +/- 5 in/lbs.
2.
Place Serial Analog Module switch SW4, switch 4 in the closed (opposite the open) position. This
sets the input and output voltages to 1-10 Vdc to duplicate the input voltage of the replaced Analog
module.
3.
Install the new Serial Analog Module and lock the quarter turn screws on the top and bottom of the
module.
4.
Run a ghost program to test the unit. If fluctuations in the air pressure are observed, increase the pi-
lot line length as noted below:
if using 5/32"
pilot line, increase to 35’ long
if using ¼” pilot line, increase to 14’ long
Any additional fluctuations in air pressures may be caused by air leaks between the air control mother
board and the pilot operated regulator. Inspect and eliminate any leaks found.