Cla-Val 350-01/3650-01 - Manual (Page 19)

RDH011017,TB_300MultiModeControls.doc,5/5/2005
Technical Bulletin
300 Series (Multi-Mode) Electronic Actuated Pilot Controls
Introduction
CDB-30, CDHS-30, CRA-30, CRD-30, and CRL-30 are pilot controls used in Cla-Val 300 Series
Electronic Actuated Control Valves. These controls offer the same functional control of the valve as
existing pilot controls, along with additional remote electronic setpoint adjustment capabilities. The
new pilot controls consist of a modified pilot control (sub-assembly), a 130VC Electronic Actuator
and mounting components.
I. O. M. Information
A. For Installation, Operation and Maintenance information only on the 130VC Electronic Actuator
(p/n 20091401A), use data in N-130VC sheets included with this manual. This document also
includes wiring diagrams for electronic interface connections.
B. For Installation, Operation and Maintenance information only on the pilot sub-assembly use data
in the appropriate N-sheet for the manually adjusted pilot control. Since the 130VC Electronic
Actuator changes the setpoint adjustment of the control, all other service and maintenance
information remains the same for both. See table below.
Pilot
Control
Pilot Control
Drawing
Sub-Assembly
IOM (ref. only)
Sub-Assembly
Drawing
Sub-Assembly
Repair Kit
CDB-30 201936 N-CDB7 201935 9170023H
CDHS-30 201318 N-CDHS18 76832 20287401E
CRA-30 202993 N-CRA 202990 9170001D
CRD-30 200915 N-CRD 201606 9170002B
CRL-30 201284 N-CRL5A 201597 20666E
C. Additional service notes:
1. Before disassembly, first adjust pilot control electronically to minimum setting. This will retain full
adjustment range for actuator and pilot sub-assembly when reassembled.
2. Remove four screws and washers along with 130VC Actuator with coupler attached from
assembly bracket. Use care when removing or installing pilot sub-assembly and actuator to bracket.
See Pilot drawing.
3. Do not lubricate coupler slot and pilot adjusting screw connection. A small amount of grease is
only on adjusting screw of the pilot sub-assembly. See Sub-Assembly drawing.
4. After servicing the pilot sub-assembly, re-establish the initial factory default settings of actuator
and pilot assembly. Follow page two of N-130VC sheet instructions.
5. Check that both sets of coupler setscrews are tight to the two flats on output shaft of the 130VC
actuator before installing on bracket and connecting to pilot sub-assembly. A second set of
setscrews lock the first ones in place. Install pilot sub-assembly to bracket first, then line up coupler
and pilot control adjusting screw while installing actuator to bracket.