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Emerson Damcos User Manual
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Damcos LPU: Abbreviation
and Denominati
on
Service Manual
February 2017
SM 8000-100-01 Ed 04
7
Abbre
viation and Denomination
DPCV
Double Pilot Operated Check V
alve
HP
Hand Pump
ISC
Integrated Ship Co
ntrol
LPU
Local Pow
er Unit
LPU-D
LPU for doub
le-acting ac
tua
tor
LPU-S
LPU for single
-acting spring oper
ated actua
tor
LPU-Ex
LPU approv
ed for mounting in h
azardou
s area
PL
C
Programmable Logic Controlle
r
BB-VPI
Bulkhe
ad mount
ed V
alve Po
sition Ind
icat
or
VPI
V
alve P
osition Indica
tor
6
8
Table of Contents
Table of Contents
3
February 2017 SM 8000-100-01 Ed
4
Table of Contents
6
Abbreviation and Denomination
7
Safety
9
Warning Levels Used in Manuals
10
General Service Instructions for LPU
13
General Considerations
14
LPU and Optional Equipment
16
LPU-S Overview
19
Overview LPU-S
20
LPU-S-Ex Overview
23
Overview LPU-S-Ex
24
LPU-S-Ex-Ia Overview
27
Overview LPU-S-Ex-Ia
28
LPU-D Overview
31
Overview LPU-D
32
LPU-D-Ex Overview
35
Overview LPU-D-Ex
36
LPU-D-Ex-Ia Overview
39
Overview LPU-D-Ex-Ia
40
Troubleshooting Guide LPU
43
Fault Finding List LPU
45
LPU-S Frequently Restarting in Open Position
47
Motor Not Running and Is Hot
49
Motor Not Running and Is Cold
49
Motor Not Stopping
50
Pump Rendering too Low (or No) Pressure in One or both Directions
51
Solenoid Valve Not Working
52
Actuator Only Running in One Direction
53
(The Unit Can Either Only Open or Only Close)
53
Actuator Only Running in One Direction (the Unit Can Either Only Open or Only Close)
53
Noise from Pump, but Only at Low Pressure
54
Noise from Pump, but Only at High Pressure
55
Noise from Pump at both High and Low Pressure
55
Motor Running Hot, LPU Is Operating Normally
56
LPU-D Not Maintaining Pressure on Actuator
57
Spring Actuator Only Partly Closing or Not Starting to Close
58
Emergency Operation by Key Giving Oil Spillage through Breather Valve
59
Emergency Operation by Key Not Possible, Hydraulically Locked
59
Emergency Operation by Hand Pump Giving Oil Spillage through Breather Valve
59
Emergency Operation
59
Emergency Operation by Hand Pump Not Possible
60
Pump Not Rendering Sufficient Oil at High Pressure ("Valve Running too Slowly")
61
Motor Running for a Short Time and Stops
62
High Pressure on the Port to Which Oil Is Led
62
Motor Running for a Short Time and Stops High Pressure on the Port to Which Oil Is Led
62
Motor "Diving" in RPM in End Position
63
Motor "Diving" in RPM as Spring Actuator Opens
63
Oil Spillage, Generally
64
Oil in Electronic Connection Box
64
Oil Spillage from Breather Valve
64
Unit Drawing too Much Current
65
Too Little Tank Volume for Operating Actuator
66
LPU Cannot Raise Pressure after Hand Pump Operation (but no Problems after Remote Operation)
67
LPU Leaking from Bleeder Valve When Hand Pump Is Mounted
68
Spring Actuator Do Not Close by Emergency Hand Pump Operation
69
LPU-Ex Motor Do Not Run
70
Tuator
71
LPU-Ex Has to be Bulkhead Mounted Because of too Little Space or Zone 0 at Actuator
71
Position Indicator Errors
72
Operating LPU-S 2
73
Operating LPU-D 2A
75
Emergency Operation of LPU V.2
77
Speed Adjustment for Actuator on LPU (V.2)
83
Pump Pressure Adjustment for LPU
85
Refill of Oil in LPU
87
Replace Pump in LPU
93
Replace DPCV in LPU
97
Replace Release Valve in LPU
99
Setup New P-Net LPU Circuit Board
101
Setup New P-Net LPU Circuit Board in VIEW Ver. 3.16
103
Replace Printed Circuit Board
105
Replace Solenoid Valve in LPU-D
107
Replace Pressure Switch
109
LPU Technical Data
111
Technical Data
113
LPU Power Control System
119
LPU Power Control Description
121
Operation LPU-S
123
Operating LPU-D
124
LPU with LED Position Indicator
125
LPU P-NET System
129
LPU P-Net Description
131
PCB Diagram for Local Control
132
PCB Diagram for Stand Alone Unit
133
Hydraulic Hand Pump
135
Technical Data
137
Hydraulic Diagram for Direct Mounted LPU Handpump
138
Hydraulic Diagram for Bulkhead Mounted LPU Handpump
139
Index
141
4
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Emerson Damcos Specifications
General
Brand
Emerson
Model
Damcos
Category
Portable Generator
Language
English
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