Instruction Manual Form 5200 May 1999
Type 4660
Type 4660 High-Low Pressure Pilot Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Installation
................................ 4 Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Actuator Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Panel Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Pipestand Mounting . . . . . . . . . . . . . . . . . . . . . . . . . 4 Pressure Connections . . . . . . . . . . . . . . . . . . . . . . . . 4 Supply Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Process Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Output Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Vent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
W4035/IL
Operating Information
................... 7 Pilots without Optional Set Point Indication . . . . . . 7 Preliminary Adjustments . . . . . . . . . . . . . . . . . . . . . 7 Setting the High Set Point . . . . . . . . . . . . . . . . . . . . 8 Setting the Low Set Point . . . . . . . . . . . . . . . . . . . . 8 Alternate Set Point Adjustment Procedure . . . . . . 8 Pilots with Optional Set Point Indication . . . . . . . . . 9 Setting the High and/or Low Set Point(s) . . . . . . . 9 Prestartup Checks . . . . . . . . . . . . . . . . . . . . . . . . . 10 Alignment of the Nozzle Beam . . . . . . . . . . . . . . . 10 Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Performance
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Principle of Operation
W4034/IL
. . . . . . . . . . . . . . . . . . 11 Figure 1. Type 4660 High-Low Pressure Pilot with Relay
............................. Bourdon Tube/Flapper Assembly Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . Block-and-Bleed Relay Assembly Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . Low or High Set Point Assembly Replacement . Pilots without Set Point Indication . . . . . . . . . . . Pilots with Set Point Indication . . . . . . . . . . . . . .
11
Parts Ordering . . . . . . . . . . . . . . . . . . . . . . . . . . .
13
12
Introduction Scope of Manual
12 12 12 13
Parts Kits
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Parts List
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
This instruction manual provides installation, operating, maintenance, and parts ordering information for the Type 4660 high-low pressure pilot. Refer to separate instruction manuals for information regarding the control valve actuator. Only qualified personnel should install, operate, and maintain this pilot. If there are any questions concerning these instructions, contact your Fisher sales office or sales representative before proceeding. D200163X012
Maintenance