INTRODUCTION
I-E96-322A
8 - 1
SECTION 8 - REPAIR/REPLACEMENT PROCEDURES
INTRODUCTION
Repair procedures are limited to module replacement. If the
IMHSS03 Hydraulic Servo Module fails, remove and replace it
with another. Refer to Table
for a list of spare parts and
part numbers.
MODULE REPLACEMENT
If it is determined that the hydraulic servo (HSS) module is
faulty, replace it with a new one. Do not attempt to repair the
module by replacing discrete circuit components. Replacing
components may affect the module performance and certifica-
tion. The HSS module can be removed while the turbine is
on-line provided there are other turbine speed control valves
operating that can shut down operation if necessary.
Table 8-1. Spare Parts List
Part Number/
Nomenclature
Description
IMFCS01
Frequency counter module
IMHSS03
Hydraulic servo module
IMMFP01/02/03
Multi-function processor modules
NIDI01
Digital I/O termination module (2 required for full
IMHSS03 functionality, 1 required for IMHSS02
functionality)
NKAS02/12
Termination module cable, IMHSS03 to 2 NIDI01
termination modules
NKHS03/13
Termination unit cable, IMHSS03 to NTHS03 and
IMHSS03 to NTDI01
NTDI01
Digital I/O termination unit (IMHSS02 functionality only)
NTHS03
Hydraulic servo termination unit
1946715_8
Dipshunt
1946984_1
Jumper
194776_13001
3 A, 250 V slo blo fuse (for NTDI01)
1948182_33001
3 A, 250 V slo blo fuse (for NTHS03)
435862_1
Dipshunt cutting tool (Amp Incorporated part number)
NOTE: It is impractical to specify a recommended quantity of spare parts because Bailey custom
designs every system. Contact Bailey for help determining the quantity of spare parts to keep on
hand for your particular system.
