Cameron Barton 199 - Maintenance, Adjustment, and Calibration; Tools for Maintenance and Calibration; DPU Inspection and Cleaning

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SECTION 4 - MAINTENANCE, ADJUSTMENT, & CALIBRATION
4-1. Tools Required for Maintenance and Calibration
A calibration tool kit (P/N 0202-1005B) containing the necessary tools is avail-
able from the factory. The following tools are required for maintenance and
calibration of the DPU
:
Table 4-1. Tools
Description Purpose
Screwdriver Bracket screws
7/16" Hex wrench Housing bolts
5/8" Hex wrench Housing bolts
3/4" Hex wrench Housing bolt/stud nut (6,000 PSI units)
1/8" Allen wrench Dampener Adjustment
1/2" Open end wrench Pushrod - bellows cup connection
1/2" 12-point socket Housing bolt (6,000 PSI units)
Modied Box/Open-ended Wrench Kickoff spring lock nut
(7/16")
100 ft.-lb. Torque wrench Housing bolts
4-2. DPU Inspection and Cleaning
WARNING
(High-pressure Gas Installations
with pressures greater than 200 psig)
HIGH-PRESSURE GAS HAZARD ON DISASSEMBLY OF THE DPU.
TO PREVENT POSSIBLE SEVERE PERSONAL INJURY, DEATH,
OR SUBSTANTIAL PROPERTY DAMAGE DUE TO THE RELEASE
OF INTERNAL PRESSURE, PERFORM THE PRESSURE CHEC
K
PROCEDURE THAT FOLLOWS (Step A) BEFORE REMOVING THE
DPU HOUSING BOLTS
.
NOTICE
If accumulation of solids or semi-solids is extensive, remove the housings
carefully to prevent damaging the bellows
.
WARNING
(Housing Bolts)
DO NOT REUSE HOUSING BOLTS. IF BOLTS ARE
DISTURBED, REPLACE WITH NEW BOLTS, PER TABLE 4-2
(STANDARD) or TABLES 4-3/4-4 (NACE).
REUSE OF HOUSING BOLTS, ESPECIALLY IN CRITICAL
APPLICATIONS LIKE HYDROGEN SULFIDE AND SALT WATER
EXPOSURES, CAN RESULT IN SEVERE INJURY, DEATH
OR SUBSTANTIAL PROPERTY DAMAGE DUE TO BOLT
FAILURE.
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