Temperature Control Valve for Main Engine Cooling FW, consist of:

Automatic Controller:

a. Filter Regulator for Automatic Controller
Data sheet:
- Branch : Nakakita Seisakusho
- Type : NS 770C
- Connection : PT1/4

Filter Regulator for Automatic Controller

- Inlet Press. : 10 kg/cm2( max)
- Outlet Press.: 3kg/cm2 (max)
- Inspection results:
· Normal condition. When given the pressure of 8 kg/cm2 still can be set between 0-3 kg/cm2.
· Tubing connections are still good.
b. Automatic Controller
Data sheet:
- Branch : Nakakita Seisakusho
- Type : NST 732
- Air Sup. Press.: 1,4kg/cm2

Automatic Controller 

Control Pressure : 0,2 – 1,0 kg/cm2
- Scale Range : 0 – 150kg/cm2
- Inspection Result:
· Scale pointer is not appropriate,
· Tubing connections are still good,
· Not release the pressure on the outlet when in put pressure on the inlet pressure signal up to 8 kg/cm2.

2. Control Valve:

a. Control Valve Section
Data sheet:
- Branch : Nakakita Seisakusho

Control Valve Section

Type : 855DA
- Range air sup.: 0,2 – 1,0kg/cm2
- Inspection Result :
· Linkage pointer and scale corrosion,
· Still be working at the time of the diaphragm inlet pressure in the range 0,2 - 1.0 kg/cm2,
b. Positioner Valve Section
- Branch : Nakakita Seisakusho

Positioner Valve Section 

Type : NS 737 S- D
- Supply Pressure : 1,4 kg/cm2
- Outlet Pressure: 0,2 – 1kg/cm2
- Inlet Pressure : 0,2 – 1kg/cm2 

· Supply Pressure Gauge
a) Branch : NKS
b) Range Pressure: 0 – 3kg/cm2
c) Connection Diameter: ¼”
d) Type Connection : Side Connection
e) Face Diameter : 1,5”
f) Condition: not calibrated 

· Outlet Pressure Gauge
a) Branch :NKS
b) Range Pressure: 0 – 2kg/cm2
c) Connection Diameter: ¼”
d) Type Connection: Side Connection
e) Face Connection: 1,5”
f) Condition: not calibrated 

· Inlet/ Signal Pressure gauge
a) Branch : NKS
b) Range Pressure: 0 – 2 kg/cm2
c) Connection Diameter: ¼”
d) Type Connection: Side Connection
e) Face Diameter: 1,5” Condition: not calibrated

Work has been done:

1. Function test Valve Diafragm,

Result:
- Still be working at the time of the diaphragm inlet pressure in the range 0,2 - 1.0 kg/cm2(directly, without using the automatic controller),
- Scale designation on control valve at position 0% - 100% or close and open, given the current pressure 0,2 - 1,0 kg / cm2,
- No reaction when using the automatic controller,

2. Automatic Controller Test function

Result :
- Because the scale is not appropriate designation / damaged on the Automatic Controller can not be accurately test,
- Provide input on the filter regulator air pressure and normal work,

3. Positioner Test Function

Result :
- Normal state at the time given the pressure on the supply pressure and produces a regular outlet pressure,
- Put pressure on the signal still with manual pressure regulator kompressore using filters in the range 0-1 kg / cm2,
Not to use the automatic control because it does not guarantee the accuracy of the pressure value which caused inaccuracy scale designation.

Battery Switch Board (Battery Charger & Discharger)

1. Equipment Specification:

a. Battery Switch Board (Battery Charger & Battery Discharger) 
b. Brand : UZUSHIO Electric co.,ltd. 
c. Battery 

• Capacity : 200AH
• Voltage : 24VDC
• Current : 20A 

d. Charger

1. Source : 440V
2. Frequency : 60Hz.
3. Output : DC 22- 32V
4. Charge : 30A

Repair Battery Switch Board (Battery Charger & Discharger)

2. Problems occurred ( information from the owner / user ):

1. Indicator lights to the monitoring fuse does not work, the lights remain lit fuse in an is lost. 
2. VU ( Volume Unit) to monitor resistant grounding does not show an accurate value in monitor mode and test mode. 
3. Wires inside the panel so that it takes less tidy cable track

VU Unit

3. Inspection results

1. Indicator lights to the monitoring fuse does not work, the lights remain lit fuse in an is lost.

a. Trip Circuits cut off / burned
Specification of Trip Circuit:

· Type P450 15A (P4-15 250V/15A) No brands

b. Rectifier Protect Fuse is not standard / modifications have been done
Specification of Rectifier Protect Fuse:

· Fuse 30A

Battery Switch Board

2. VU ( Volume Unit) to monitor resistant grounding does not show an accurate value in monitor mode and test mode

Possibilities occur:

a. There is a problem in the Accessories Unit

Specification of Accessories Unit:

b. VU meter unit for grounding resistance meter problem

Specification of VU meter unit:

• Brand : Toyo Keiko

• Type : NN-220A

c. Timer problem

Specification of Timer unit:

• Brand : Omron

• Type : H3B4

d. Selector switch for Monitor and Test Position problem

e. Ground Connection Lost
3. Wires inside the panel so that it takes less tidy cable track

a. Too many spare cables are not neatly.

 Load Control unit Battery Switch Board

4. Problem solving

Indicator lights to the monitoring fuse does not work, the lights remain lit fuse in an is lost.

· Replacement of trip circuit

· Note: There should be more spare ‘trip circuit’ , since the trip circuit will be cut off in the event of mains fuse broke. The possibility of breaking up the frequent occurrence of very large.

· Replacement of mains fuse with a fuse that is safe / standarad
VU ( Volume Unit) to monitor resistant grounding does not show an accurate value in monitor mode and test mode.

· Check and repair if necessary on the unit accessories, VU meter, Timer, Selector Switch, and Grounding Connection.

· Note: Possible replacement could occur in the unit VU meter, Timer, Selector Switch.

1. Wires inside the panel so that it takes less tidy cable track

Installing Cable Duct/ Cable Tracking

Pressure Gauge data and benchmarking results with a Pressure Gauge Calibrator Master

1. Filter Regulator Pressure Gauge for Automatic Level Controller

a. Brand: SMC

b. Range: 0 – 4 kg/cm2 or 0 – 1.65 psi

c. the Diameter of the face: 1.65 "

d. Connector Diameter: 0.4 "

e. Type: rear Connector

f. Results of the Comparison with a master Pressure Gauge:

Filter Regulator Pressure Gauge for Automatic Level Controller

-Master: 3, 0kg/cm2

-Filter Regulator Pressure Gauge: 3, 05kg/cm2

-Condition: Linear

2. Automatic Level Controller for Pressure Gauge

1) Supply

a. Brand: NKS

b. Range: 0 – 3 kg/cm2

c. Face Diameter: 2 "

d. Connector Diameter: 0.5 "

e. Type: rear Connector

f. Results of the Comparison with a master Pressure Gauge:

Comparison with a master Pressure Gauge Supply

-Master: 3, 0kg/cm2

-Supply Pressure Gauge: 3, 2 kg/cm2

-Condition: Linear

2) Output Signal

a. Brand: NKS

b. Range: 0 – 2 kg/cm2

c. Face Diameter: 2 "

d. Connector Diameter: 0.5 "

e. Type: rear Connector

f. Results of the Comparison with a master Pressure Gauge:

Comparison with a master Pressure Gauge Output Signal

-Master: 2, 0kg/cm2

-Output Pressure Gauge: 2, 2kg/cm2

-Condition: Linier

3. Positioner/Level Control Valve for Aux Condenser

1) Supply Pressure Gauge

a. Brand: NKS

b. Range: 0 – 3 kg/cm2

c. the Diameter of the face: 1.65 "

d. Connector Diameter: 0.25 "

e. Type: bottom/side Connector

f. Results of the Comparison with a master Pressure Gauge:

Comparison with a master Pressure Gauge Supply Pressure Gauge

-Master: 2, 0kg/cm2

-Supply Pressure Gauge: 1, 9kg/cm2

-Condition: Error/fluctuations

2) Output Pressure Gauge

a. Brand: NKS

b. Range: 0 – 2 kg/cm2

c. the Diameter of the face: 1.65 "

d. Connector Diameter: 0.25 "

e. Type: bottom/side Connector

f. Results of the Comparison with a master Pressure Gauge:

Comparison with a master Pressure Gauge Output Pressure Gauge

-Master: 2, 0kg/cm2

-Output Pressure Gauge: 1, 9kg/cm2

-Condition: Error/fluctuations

3) Signal Input Pressure Gauge

a. Brand: NKS

b. Range: 0 – 2 kg/cm2

c. the Diameter of the face: 1.65 "

d. Connector Diameter: 0.25 "

e. Type: bottom/side Connector

f. Results of the Comparison with a master Pressure Gauge:

Comparison with a master Pressure Gauge Signal Input Pressure Gauge

Master: 2, 0 kg/cm2

-Signal Input Pressure Gauge: 2, 1 kg/cm2

-Condition: Error/fluctuations