INTRODUCTION
8 - 1
SECTION 8 - REPAIR AND REPLACEMENT PROCEDURES
INTRODUCTION
This section provides disassembly and assembly procedures for
replacement of the faceplate/operator interface assembly, main
board, power supply board, termination board and fuse replacement.
Also included is an assembly drawing of the controller and recom-
mended spare parts.
NOTE:
Repair/replacement personnel should be qualified techni-
cians, experienced in disassembly and assembly of electronic
equipment.
USING THE LOOP BYPASS STATION
If the operator interface board or the main board must be removed for
servicing, a Type CLB01 Loop Bypass Station is available as an
accessory. The Type CLB01 station is a maintenance tool for mainte-
nance or repair/replacement personnel. When properly installed and
adjusted, the loop bypass station overrides two analog outputs of the
Type SLC controller and permits direct manual control of the process.
Refer to the
instruction for detailed
information of operation before continuing.
The following procedures outline use of the loop bypass station.
1. Transfer control to the bypass mode from the main menu.
2. Connect the loop bypass cable to connector P3 (Fig.
) on the
controller termination unit and transfer analog output control to the
loop bypass station.
WARNING
Do not substitute components that compromise the certifica-
tions listed on the nameplate. Invalidating the certifications
can lead to unsafe conditions that can injure personnel and
damage equipment.
AVERTISSEMENT
Ne substituez pas des composantes qui pourraient annuler la
conformité aux classes figurant sur la plaque signalétique rela-
tivement aux endroits dangereux. Ceci peut entraîner des con-
ditions dangereuses qui risquent de provoquer des blessures
et des dommages matériels.