Leslie Controls Pilot Controller - Manual

12501 Telecom Drive, Tampa Florida 33637
A subsidiary of International, Inc.
20/1.5.2
Rev.3
INSTALLATION, OPERATING,
AND MAINTENANCE INSTRUCTIONS
PARTS LIST
LESLIE PILOT CONTROLLERS
TABLE OF CONTENTS
ADJUSTABLE PROPORTIONAL BAND PILOT CONTROLLERS (PDAP and PRAP Types)
SECTION I — INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
SECTION II —OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
SECTION III — MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5
SECTION IV — SETTING OF ADJUSTING PIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6
STEM LENGTH AND SENSITIVITY ADJUSTMENT (PRA-1 and PRQ-1 Types)
CONSTANT PRESSURE PILOT CONTROLLERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
CONSTANT, DIFFERENTIAL PRESSURE AND RATIO PILOT CONTROLLERS
Force Balance, Fixed Band Types
SECTION I — INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
SECTION II — OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
SECTION III — MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-25
ILLUSTRATION INDEX
DRAWING, DIMENSIONS, TYPICAL INSTALLATIONS AND MISCELLANEOUS DATA
Figure 1 - Pilot Controller Piping Details - Pressure Reduction Station . . . . . . . . . . . . . . . . . .2
Figure 2 - Pilot Controller with 1:1 Volume Booster Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Figure 3 - Pilot Controller wit 1:1 Volume Booster and Reset Relay . . . . . . . . . . . . . . . . . . . . .3
Figure 4 - Pilot Controller with Positioner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Figure 5 - Pilot Controller with Inverse Derivative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Figure 6 - Type PRAP Pilot Controller (5-80 psig range) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Figure 7 - Type PDAP Pilot Body Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Figure 8 - Position of sliders for nut/blade spring adjustment . . . . . . . . . . . . . . . . . . . . . . . . .5
Figure 9 - Min./Max. Proportional Band Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Figure 10 - Adjustable Proportional Band Pilot Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Figure 11 - PRA-1, PRW-1, PRQ, Pilot Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Figure 12 - Pilot Controller piping details — Typical Installation . . . . . . . . . . . . . . . . . . . . . . . .8
Figure 13 - Drawing showing Direct Acting Type Pilot Controller (PDA-1, etc.) . . . . . . . . . . . .9
Figure 14 - Partial Drawing showing lever and lever pin, etc. . . . . . . . . . . . . . . . . . . . . . . . . . .9
Figure 15 - Diaphragm assembly for Pressure Ranges 13 PSIA - 20 PSIG to 50-125 . . . . . .11
Figure 16 - Back Pressure or Pressure Relief Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Drawing - Pilot Controllers Types PDA-1, PDQ-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Drawing - Pilot Controller Types PRA-1, PRA-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Drawing - Pilot Controller Type PDAP-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Drawing - Pilot Controller Types PRAP-1, Range 5-70 & 50-800 . . . . . . . . . . . . . . . . . . . . .20
Drawing - Differential Pilot Control Type UDDV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Drawing - Pilot Controller Type DDD, 15-75 Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24