GE Kelman Minitrans Manual

GEDE-GA_M-DLIS-TE.MA-006 Rev 2.2 5-Mar-20
GE
Grid Solutions
Kelman™ Minitrans
Operator Guide
Transformer Oil
Dissolved Gas and Moisture Monitor

MA-006 –Minitrans Operator Guide –Rev 2.2 5-Mar-20 Page 2 of 26
Contents
Page
1Introduction........................................................................................................4
1.1 Product Overview................................................................................................................................................. 4
1.2 Scope.......................................................................................................................................................................... 4
2Safety ...................................................................................................................5
2.1 Symbols..................................................................................................................................................................... 5
2.2 Safety Statements ............................................................................................................................................... 5
2.3 Hazardous Substances ...................................................................................................................................... 6
3Technical Specification ....................................................................................7
4Compliance .........................................................................................................9
5Power .................................................................................................................10
5.1 Introduction ..........................................................................................................................................................10
5.2 LED status indicators........................................................................................................................................10
5.3 Battery.....................................................................................................................................................................11
5.4 Power-down procedure...................................................................................................................................12
6LCD Display Panel............................................................................................13
6.1 LCD Information Notices.................................................................................................................................14
6.1.1 Startup....................................................................................................................................................... 14
6.1.2 Manual Measurements...................................................................................................................... 15
6.1.3 Manual Oil Sampling ........................................................................................................................... 16
6.1.4 Further System Specifications....................................................................................................... 16
6.2 Error Codes............................................................................................................................................................18
7Manual Oil Sampling .......................................................................................19
7.1 Sampling Arrangement....................................................................................................................................19
7.2 Sampling Process ...............................................................................................................................................20
8Air Filter Cleaning............................................................................................21
9Oil Filter Cleaning ............................................................................................22
10 Communications..............................................................................................23
11 Modbus Protocol .............................................................................................23
12 Service Logs ......................................................................................................23
13 Technical support............................................................................................23
Appendix A Time Sync Implementation ........................................................24
Contact & Copyright Details ...............................................................................26

MA-006 –Minitrans Operator Guide –Rev 2.2 5-Mar-20 Page 3 of 26
List of Tables and Figures
Page
Table 3-1: Technical specification...........................................................................................................................................7
Table 4-1: Type tests.....................................................................................................................................................................9
Figure 5-1: Power switch.......................................................................................................................................................... 10
Figure 5-2: Fuse holder.............................................................................................................................................................. 10
Table 5-1: External LED status indicators........................................................................................................................ 10
Figure 5-3: Coin cell battery.................................................................................................................................................... 11
Figure 6-1: Front view of the product ................................................................................................................................ 13
Figure 6-2: LCD information notice —error format (top) & example (below)................................................ 13
Figure 6-3: Boot screen............................................................................................................................................................. 14
Figure 6-4: Version screen....................................................................................................................................................... 14
Figure 6-5: Standby mode........................................................................................................................................................ 14
Figure 6-6: Scheduler disabled.............................................................................................................................................. 14
Figure 6-7: Peripheral scheduler........................................................................................................................................... 15
Figure 6-8: Start a manual measurement........................................................................................................................ 15
Figure 6-9: Stop a measurement.......................................................................................................................................... 15
Figure 6-10: Measurement data ........................................................................................................................................... 16
Figure 6-11: Standby mode..................................................................................................................................................... 16
Figure 6-12: Communication channels ............................................................................................................................. 16
Figure 6-13: Networking........................................................................................................................................................... 17
Figure 6-14: GSM / GPRS modem......................................................................................................................................... 17
Table 6-1: Error codes................................................................................................................................................................ 18
Figure 7-1: Manual sampling arrangement ..................................................................................................................... 19
Figure 7-2: Product fitted with manual sampling arrangement............................................................................ 19
Figure 7-3: PTFE tubing............................................................................................................................................................. 19
Figure 7-4: Manual oil sampling process .......................................................................................................................... 20
Figure 8-1: Air filter assembly without cover ................................................................................................................. 21
Figure 8-2: Air filter with cover.............................................................................................................................................. 21
Figure 9-1: Oil filter housing.................................................................................................................................................... 22
Figure 9-2: Oil filter ..................................................................................................................................................................... 22
Table A-1: Timing ......................................................................................................................................................................... 24
Table A-2: UNIX time registers .............................................................................................................................................. 24
Table A-3: Access flags.............................................................................................................................................................. 25
Table A-4: Modifier flags........................................................................................................................................................... 25
Related Documents
Ref#
Title
MA-005
Minitrans Installation Manual
Abbreviations & Definitions
Abbreviation
Meaning
PCB
Printed Circuit Board
PPE
Personal Protective Equipment

MA-006- Minitrans Operator Guide - Rev 2.2 5-Mar-20 Page 4 of 26
1INTRODUCTION
1.1 Product Overview
The Minitrans™ (herein referred to as the product) is an on-line DGA (Dissolved Gas
Analysis) system for transformer diagnostics. The product measures the following key
fault gases in transformer oil: hydrogen, carbon monoxide and acetylene as well as
moisture in the oil and the transformer load current. Such data provides insight on
transformer condition criteria, such as developing faults, paper degradation and
electrical arcing. Once installed, operation is straightforward. All results are stored within
the product, but can be downloaded to a PC for analysis.
The key features and characteristics are summarised as follows:
▪Utilises dynamic headspace sampling to extract target gases from the oil sample.
▪No consumables, such as carrier gases are required.
▪Accurate results are available as often as once per hour.
▪Minimal maintenance*.
▪Uses highly accurate and stable Photo-acoustic Spectrographic technology.
▪Fully embedded microprocessor with non-volatile internal memory storage for 10,000
records.
▪Stainless steel outdoor-rated IP55 enclosure connected to the transformer by robust
stainless-steel tubing.
▪All gas sensing is carried out internally –no external gas sensors.
▪Transformer load tracking is available.
▪One user-configurable relay contact based on absolute gas and moisture values.
▪Two sunlight-visible LED arrays on the exterior of the enclosure –one green for
power, one red for alarm.
▪Communication options include: Ethernet, RS-232, Cellular modem (GSM/GPRS),
PSTN modem, RS-485 and Fibre Optic. Other options may be available on request.
▪Internal USB connection provided for commissioning and service, or local data
download.
*Note: The only recommended maintenance is periodic cleaning of the air filters, in-
line oil filter and battery replacement.
1.2 Scope
This guide outlines the use of the LCD display panel, manual DGA sampling function and
general maintenance activities.

MA-006- Minitrans Operator Guide - Rev 2.2 5-Mar-20 Page 5 of 26
2SAFETY
2.1 Symbols
The meaning of symbols used on the Kelman™ Minitrans:
Refer to the Installation Manual / Operator Guide to prevent death, injury,
equipment damage or loss of data.
Electrical Hazard. Risk of electric shock.
Primary Protective Earth connection.
Hot surfaces may be present.
The meaning of symbols used in this manual:
Warning: A procedure, practice, or condition could cause death or serious
injury and/or significant equipment damage.
[Caution]: A procedure, practice, or condition could cause minor injury,
equipment damage or loss of data.
Electrical Hazard: Risk of electric shock.
Hot surfaces may be present.
2.2 Safety Statements
The following safety statements must be observed:
The minimum ambient temperature for installation and service activities is
−10 °C.
WARNING: If the equipment is installed or used in a manner not specified
by the manufacturer, the protection provided by the equipment may be
impaired.
WARNING: If working at height, third parties must have received
appropriate training for working at height prior to work commencing. This
includes, but is not limited to, ‘Working at height’ and ‘Using Mobile
Elevated Working Platforms’ training.

MA-006- Minitrans Operator Guide - Rev 2.2 5-Mar-20 Page 6 of 26
WARNING: If working at a height greater than 4 feet (1.2 metres) or at a
height greater than that stipulated by national or site regulatory
requirements, it is the responsibility of the installer to ensure that planned
work complies with those requirements.
WARNING: The user shall ensure that any third-party equipment, such as
an approved platform, scaffold or lift is suitable and safe before
commencing work. Ladders or improvised platforms do not meet GE service
engineer requirements.
Hot surfaces present on oil pipes and risk of contact with mineral oil. Use
suitable PPE.
WARNING: Once installed, this product may have more than one source of
electrical supply. Disconnect all supplies at their source before accessing
the cabinet for servicing. Follow the site lockout-tagout (LOTO) procedure.
WARNING: Disconnection from the supply is achieved through the
external circuit breaker or switch.
WARNING: Ensure all power sources, including relays, are de-energised as
stipulated by lockout-tagout (LOTO) requirements before performing any
maintenance work inside the product.
WARNING: The product is operated with the door shut under normal use.
The door shall be kept locked and should only be opened for service access
by suitably qualified and authorised service personnel. During service
access, hazardous voltages are accessible.
Only GE-trained and certified personnel may commission GE Kelman
products. Commissioning tasks include making any connections and/or
performing any work within the enclosure, or performing tasks such as
purging the oil circuit between the transformer and the product, and/or all
first start-up procedures relating to equipment or firmware/software.
The product provides IP55 water spray protection. It is possible for a water
deluge system to exceed IP55 thresholds depending on the location,
pressure and direction of the water jets. Should customers require testing a
water deluge system in the area in which the product is installed, GE
recommends powering down the product and draping it with a suitable
waterproof covering.
2.3 Hazardous Substances
The gases measured in the product are extracted from the oil and expelled to the
atmosphere via the exhaust vent on the side of the unit. The area around the exhaust
vent should be kept clear and unobstructed. All expelled gases are at concentrations
that are nonflammable, nontoxic and quickly diluted in the surrounding atmosphere. The
expelled gases are not hazardous to health or life.

MA-006- Minitrans Operator Guide - Rev 2.2 5-Mar-20 Page 7 of 26
3TECHNICAL SPECIFICATION
The product meets the following technical specification as outlined in Table 3-1.
Table 3-1: Technical specification
PARAMETER
VALUE/MEETS
GAS MEASURED *1 & 9
RANGE
ACCURACY*2 & 3
Hydrogen (H2)
5 –5,000 ppm
± 10% or ± LDL
Acetylene (C2H2)
3 –50,000 ppm
± 10% or ± LDL
Carbon Monoxide (CO)
10 –50,000 ppm
± 10% or ± LDL
Moisture (H2O)
0 –100% Relative
Saturation *4
± 3.5%
Measurement frequency
Variable –Once per hour to once every four weeks
ENVIRONMENTAL
Operating external
temperature range
−35 °C to 55 °C
Storage temperature range
0 °C to 45 °C
Oil temperature range *5
−10 °C to 100 °C
Altitude
Up to 2000 m
Atmospheric pressure
Up to 1050 mbar
Operating humidity
0 –95% RH non-condensing
Enclosure
IP55
Weight *6
30.5 kg (68 lb)
POWER REQUIREMENTS
Nominal voltage range:
115-230 V AC, 6 A max
Rated voltage range:
103-126 V AC
207-253 V AC
AC frequency range:
47-63 Hz
Single phase Alarm Relays:
NO and NC provided*7
1 A 250 V AC, 300 mA 110 V DC, 1 A 30 V DC
Fuses *8
Mains:
10 A 500 V (Cooper Bussmann BAF), 10 × 38 mm
Accessories:
2 × 2 A 250 V (Littelfuse 392 T)
Coin cells
Panasonic CR2450 3 V 620 mAh
*1 Note: Parameters specified in application with mineral oil.
*2 Note: Accuracy is quoted for the detectors under factory calibration and test levels.
Gas-in-oil measurements may be affected by sampling and/or oil type.
*3 Note: Whichever is greater.
*4 Note: Given in ppm.
*5 Note: Based on testing carried out using VOLTESSO™ 35 mineral oil over a ¼ in. pipe
run of 10 metres or less from oil supply or return valve to product connection
point, and on transformer oil supply valve volumes of 200 ml or less. For oil
temperatures colder than −10 ºC, GE recommends the use of heat trace cabling
on piping. Low oil viscosity reduces oil flow.

MA-006- Minitrans Operator Guide - Rev 2.2 5-Mar-20 Page 8 of 26
*6 Note: The weight depends on the order specification. The stated weight is for a base
product without packaging and excludes options such as a mounting stand.
Check the shipping document for the exact packaged weight.
*7 Note: Maximum DC breaking capacity for a resistive load.
*8 Note: Use only the approved and recommended fuse to ensure continued fire
protection and compliance.
*9 Note: Laboratory results can vary greatly worldwide as has been established through
many round-robin tests. Any comparison of Minitrans measurement results
against laboratory results need to be considered in this context.

MA-006- Minitrans Operator Guide - Rev 2.2 5-Mar-20 Page 9 of 26
4COMPLIANCE
The product is designed to meet the following type tests as listed in Table 4-1.
Table 4-1: Type tests
CATEGORY
STANDARD
CLASS/
LEVEL
TEST
EMC Emissions
CISPR 11 / EN55011
A
Radiated & Conducted Emissions
IEC 61000-3-2
A
Harmonic Current Emissions Limits
IEC 61000-3-3
A
Limitation of voltage changes, voltage
fluctuations and flicker in public low-
voltage supply systems, for
equipment with rated current<+ 16 A
per phase and not subject to
conditional connection
FCC Part 15
A
Radiated and Conducted Emissions
EMC Immunity
EN61326-1
General Requirements
IEC 61000-4-2
B
Electrostatic Discharge
IEC 61000-4-3
A
Electromagnetic Field Immunity
IEC 61000-4-4
B
Electrical Fast Transients
IEC 61000-4-5
B
Surge Immunity
IEC 61000-4-6
A
Conducted RF Immunity
IEC 61000-4-8
A
Magnetic Field Immunity
IEC 61000-4-11
B
Voltage Dips & Interruptions
IEC61000-4-9
Pulse Magnetic Field Immunity
IEC61000-4-10
Damped Oscillatory Magnetic Field
Immunity
IEC61000-4-13
Harmonics and Interharmonics
including mains signaling at AC Power
Port, Low Frequency Immunity
IEC61000-4-16
Test for immunity to conducted,
common mode disturbances in the
frequency range 0 Hz to 150 kHz
IEC61000-4-18
Damped oscillatory wave immunity
Environmental
IEC 60068-2-1
−35 °C
Cold
IEC 60068-2-2
55 °C
Dry Heat
EN 60529
IP55
Degree of Protection
IEC60068-2-30
Cyclical damp heat
IEC60068-2-6
Sinusoidal Vibration
IEC60068-2-27
Mechanical Shock
Safety
IEC 61010-1
Safety requirements for electrical
equipment for measurement, control
and laboratory use.
EN 61010-1
Safety requirements for electrical
equipment for measurement, control
and laboratory use.

MA-006- Minitrans Operator Guide - Rev 2.2 5-Mar-20 Page 10 of 26
5POWER
5.1 Introduction
The product is powered up by pressing the Power switch located inside the product
towards the bottom right-hand side (see Figure 5-1). The mains fuse holder for the
product is shown in Figure 5-2.
Note: The product automatically turns on the internal heaters to increase the internal
temperature to within the PGA operational temperature range before a
measurement can commence.
Figure 5-1: Power switch
Figure 5-2: Fuse holder
5.2 LED status indicators
The product has two relays —a service relay and a caution and alarm relay —and two
corresponding external sunlight-visible red and green LEDs on the front door. When the
product is connected to the mains power and is powered on, the green LED illuminates
continuously. Each LED has three states –Off (-), On or Flashing, the meaning of which is
defined in Table 5-1.
Table 5-1: External LED status indicators
Mode
Alarm (red) LED
Power (green) LED
Power Off
-
-
Normal
-
On
Alarm
On
On
Caution
Flashing
On
Service
-
Flashing
▪Relay 1 notifies the user of a service error.
The green LED flashes if internal error checking detects an error condition. If after the
next measurement run, no error conditions exist, the green LED resumes continuous
illumination.
Fuse holder for
mains input power

MA-006- Minitrans Operator Guide - Rev 2.2 5-Mar-20 Page 11 of 26
▪Relay 2 notifies the user when a user-configurable caution and/or alarm threshold is
reached.
The red LED indicates a caution and/or alarm state. Flashing denotes a caution state
whereas continuous illumination denotes an alarm state. If after the next
measurement run, no alarm or caution states exist, the red LED switches off. Use the
TransConnect software to set alarm and caution limits for many different
combinations of results. (See the TransConnect user guide for more information).
5.3 Battery
The product uses a non-rechargeable lithium coin cell battery (Panasonic CR2450 3 V
620 mAh) as shown in Figure 5-3. If the battery needs to be replaced, data from the
product must be backed up. Failure to do so may result in historical data loss.
Figure 5-3: Coin cell battery
The following steps describe how to change the battery:
1. Back up the product data –contact your GE representative.
2. Open the inner door to locate the battery on the system board (as shown in Figure
5-3).
3. Slide the battery out of its housing.
4. Replace with a new Panasonic CR2450 3 V 620 mAh coin cell.
5. Close the inner door.
There is a danger of a new battery exploding if installed incorrectly.
Dispose of the used battery in accordance with local regulations —not in a
fire or with household waste. Contact your local waste disposal agency for the
address of the nearest battery deposit site. Perchlorate material —special
handling may apply.
See: www.dtsc.ca.gov/hazardouswaste/perchlorate/

MA-006- Minitrans Operator Guide - Rev 2.2 5-Mar-20 Page 12 of 26
5.4 Power-down procedure
If the product needs to be powered down during shut down of the transformer, perform
the following steps:
1. Observe the operating mode on the LCD.
2. If the product is in Standby mode, perform the following steps:
Open the door of the product and turn the power switch to the ‘Off’ position as
shown below.
The external switch or circuit breaker shall be turned to the ‘Off’ position.
The oil valves at the transformer to the input and output of the product shall be
turned to the ‘Off’position.
3. If the product is in Operation mode, perform the following steps:
a) Use Perception or TransConnect to stop an active measurement.
b) The LCD will read OIL DRAINING. This process may take several minutes.
c) When the product returns to Standby mode, turn the power switch to the ‘Off’
position.
d) The external switch or circuit breaker shall be turned to the ‘Off’position.
e) The oil valves at the transformer to the input and output of the product shall be
turned to the ‘Off’position.
Note: To resume power, first ensure that the transformer oil valves connected to the
input and output of the product are returned to the ‘On’ position, then turn on
the external switch or circuit breaker and finally turn the product’s power
switch to the ‘On’ position. The product can now resume taking scheduled
readings.
2013-07-30 12:00:00
STANDBY
2013-07-30 11:45:00
OIL DRAINING

MA-006- Minitrans Operator Guide - Rev 2.2 5-Mar-20 Page 13 of 26
6LCD DISPLAY PANEL
The LCD display panel is visible through the door cut-out as shown in Figure 6-1.
Figure 6-1: Front view of the product
During an analysis, the display panel shows the serial number of the product and the
operational state. Automatic paging shows the last measurement results with date and
time stamps (see Section 6.1 for examples).
In the event of an error, details are shown on the LCD display panel (see Figure 6-2 for an
example) using a sequence of double-digit codes. The middle line indicates the state
within the measurement process at which the error occurred. For example, 02 indicates
an error in the oil purging state. The last line indicates the errors in that state with each
code representing a specific error. For example, 18 means that the oil pressure is too low
(see Section 6.2 for a list of error codes and their meaning). Note: The Customer Service
Centre requires both the state code and error code(s) in order to interpret any error.
Figure 6-2: LCD information notice —error format (top) & example (below)
LCD display
panel
MINITRANS
>>>> ERRORNN <<<<
NN, NN, NN, NN, NN, NN, NN
MINITRANS
>>>> ERROR02 <<<<
18
State code
Error codes

MA-006- Minitrans Operator Guide - Rev 2.2 5-Mar-20 Page 14 of 26
6.1 LCD Information Notices
The section outlines some examples of the information notices and data pages rendered
on the LCD display panel for a standard environment using factory settings. It illustrates
typical information that a user is likely to see during normal operation. This can vary
depending on the operational environment, firmware version and how the product is
configured.
6.1.1 Startup
6.1.1.1 Boot
The Boot screen displays after power up or reset and progresses through a code
checking sequence as shown in Figure 6-3. If boot problems occur, the product raises an
error. Contact the Customer Service Centre.
Figure 6-3: Boot screen
6.1.1.2 Version
If the boot sequence is successful, a Version screen reflects the product name, serial
number, firmware version and PGA version as shown in Figure 6-4. The product
automatically pages through the various information notices and data pages, including
existing measurement results.
Figure 6-4: Version screen
6.1.1.3 Standby
An information notice indicates the operational mode as shown in Figure 6-5. Standby
mode is the initial operational mode. If scheduled measurements are configured, they
will occur automatically at the scheduled time (see Section 6.1.2.3). If there are no
scheduled measurements, the notice shown in Figure 6-6 displays.
Figure 6-5: Standby mode
Figure 6-6: Scheduler disabled
6.1.1.4 Peripheral Scheduler
If the peripheral scheduler is enabled, a single analogue input is listed with a
corresponding value as shown in Figure 6-7. By default, a Minitrans has no connected
peripherals and supports only one analogue input for a load sensor.
2019-07-30 10:00:00
STANDBY
>>> OK <<<
2019-07-30 10:00:00
SCHEDULER DISABLED
DLM 1.2.0
CODE CHECKING
MINITRANS
MN1-A000000
1.14.7
PGA: 14.0.0

MA-006- Minitrans Operator Guide - Rev 2.2 5-Mar-20 Page 15 of 26
Figure 6-7: Peripheral scheduler
6.1.2 Manual Measurements
6.1.2.1 Start a Manual Measurement
Use TransConnect to start a manual measurement on the main tank. The timer
automatically counts down from 10 seconds and indicates that a manual measurement
is about to proceed. Figure 6-8 shows the relevant screens.
Figure 6-8: Start a manual measurement
6.1.2.2 Stop a Measurement
Use TransConnect to stop an active measurement. After any remaining oil in the
headspace drains, the product returns to Standby mode as shown in Figure 6-9.
Figure 6-9: Stop a measurement
6.1.2.3 Measurement Data
The product automatically pages through the screens and measurement data of the last
analysis. For example, data for the main tank is shown in Figure 6-10.
MAIN
AIN ????.?xxx
MAIN
MEASUREMENT IN
10 s
2019-07-30 11:21:00
MAIN
MEASUREMENT STARTED
2019-07-30 11:21:10
MAIN
>>> OK <<<
2019-07-30 11:45:00
OIL DRAINING
2019-07-30 12:00:00
STANDBY

MA-006- Minitrans Operator Guide - Rev 2.2 5-Mar-20 Page 16 of 26
Figure 6-10: Measurement data
6.1.3 Manual Oil Sampling
If a manual oil sampling arrangement is fitted, perform the oil sampling according to the
sampling process (see Section 7). Wait until the current measurement process is
complete or use TransConnect to stop the current measurement process (see Section
6.1.2.2). The system returns to Standby mode as shown in Figure 6-11:
Figure 6-11: Standby mode
Manual oil sampling shall be performed while the product is in Standby mode preferably
after a measurement cycle when fresh oil is at the sampling point. Note: the product
does not have an oil purging step.
6.1.4 Further System Specifications
6.1.4.1 Communications Channels
The product has two serial communications channels. For example, default configuration
details are shown in Figure 6-12, such as the interface, protocol, baud rate, Modbus
address and parity error-checking format:
Figure 6-12: Communication channels
6.1.4.2 Networking
If Ethernet is enabled and a RJ-45 connection made, relevant network details are shown.
For security reasons, all network details are hidden by default as shown in Figure 6-13,
but these can be software enabled.
MAIN
LAST MEASUREMENT
2019-07-30 12:48:10
MAIN
H2 15220.0 ppm
C2H2 2345.0 ppm
MAIN
H20 1040.0ppm
C0 222.0ppm
MAIN
AIN 1 -1.111xxx
MAIN
NEXT MEASUREMENT
2019-07-30 16:48
2019-07-30 12:00:00
STANDBY
ChA RTU 1 RS232
19200 0
ChB: ASC 1 GSMGPRS
57600 0

MA-006- Minitrans Operator Guide - Rev 2.2 5-Mar-20 Page 17 of 26
Figure 6-13: Networking
6.1.4.3 Other System Details
Additional information notices reflect the configuration of the product. For example, if a
GSM/GPRS modem is fitted, additional page(s) as shown in Figure 6-14 reflect the
communications provider, signal strength and any problems.
Figure 6-14: GSM / GPRS modem
Notes:
a) Actual product values depend on the installation at any moment in time.
b) Actual parameter format can vary e.g. H2or Hydrogen.
c) See Section 6.2 for a list of defined error codes.
d) System Failure mode limits functionality. Contact the Customer Service Centre.
IP: XXX.XXX.XXX.XXX
SUB: XXX.XXX.XXX.XXX
GW: XXX.XXX.XXX.XXX
TCP: 502
vodafone UK
MAJOR GPRS PROBLEM

MA-006- Minitrans Operator Guide - Rev 2.2 5-Mar-20 Page 18 of 26
6.2 Error Codes
The LCD panel error codes are listed in Table 6-1.
Note: Error codes are offset by 1 from the Modbus register bit numbers.
Note: This information relates to firmware version PGA 14.0.81 for Minitrans.
Table 6-1: Error codes
Code
Error
Note
PGA Connection Error
Timeout
01
PGA power supply voltage too low
02
PGA chopper frequency outside range
03
PGA IR-source outside range
04
Gas flow lower than limit
05
Background noise/vibration too high
06
Microphone test failed
07
Not level sensor 1 pulses (level)
08
Not level sensor 3 (drain)
09
Fill level shows Oil
10
Over Fill shows Oil
11
PGA Air temperature outside limits
12
Bad communication with control PCB
13
Gas leak test: Pump pressure too low
14
Gas leak test: Pressure decay too high
15
Unusual ambient gas measurements
16
Oil temperature too low
17
Oil temperature too high
18
Oil pressure too low
Check that all oil supply valves are open.
19
Oil pressure too high
Check that all oil return valves are open.
20
Oil pump tacho count too high
21
Oil pump pressure too low
22
Oil pump speed out of range
23
Manual oil sampling switch
24
Oil pump tacho count too low
25
-
Not used.
26
5 V supply below 4.5 V
27
Temperature Sensor(s) 1
disconnected
28
Temperature Sensor(s) 2
disconnected
29
Drain level shows oil

MA-006- Minitrans Operator Guide - Rev 2.2 5-Mar-20 Page 19 of 26
7MANUAL OIL SAMPLING
7.1 Sampling Arrangement
The optional oil sampling port (if fitted) can be located on the oil inlet on the base of the
product. This gives access to fresh oil via a manual sampling arrangement as shown in
Figure 7-1 to Figure 7-3.
Figure 7-1: Manual sampling
arrangement
Figure 7-2: Product fitted with manual
sampling arrangement
Figure 7-3: PTFE tubing
Before commencing work, ensure the use of suitable protective gloves, such
as nitrile rubber.
Perform the manual oil sampling according to the sampling process outlined in Figure 7-
4. GE recommends the use of a 50-ml ground glass syringe. Manual oil sampling shall be
performed while the product is in Standby mode –either wait until the product returns
to Standby mode or force the product to stop the current measurement cycle using the
TransConnect software. The optimum time to perform a manual sample is just after the
product has completed a measurement because fresh oil will be at the manual sampling
point.
Collecting a manual sample while the product is performing a measurement is
not recommended as this could potentially affect the readings.

MA-006- Minitrans Operator Guide - Rev 2.2 5-Mar-20 Page 20 of 26
7.2 Sampling Process
Observe the operating mode on the LCD display panel. Figure 7-4 and the accompanying
steps detail the process to obtain a manual oil sample.
Figure 7-4: Manual oil sampling process
1. If the product is in Standby mode,
proceed to step 3. If the product is in
Measurement mode, either wait until
the product returns to Standby
mode or use the TransConnect
software to stop the active
measurement cycle.
2. If an active measurement is aborted,
oil may remain in the headspace.
The display reads “OIL DRAINING”.
Wait several minutes for the
draining process to complete and
for the product to return to Standby
mode.
3. Once the product returns to
Standby mode, remove the plug
from the ¼ in. ball valve.
4. Take the PTFE tubing and connect it
to the ¼ in. ball valve (see Figure 7-2
to Figure 7-3).
5. Remove the Luer fitting cap from
the other end of the PTFE tubing and
attach the supplied stopcock.
6. Connect the remaining oil sampling
equipment to the stopcock e.g.
syringe and perform the oil
sampling.
7. Open the ¼ in. ball valve to allow oil
to flow to the sampling point.
8. When finished sampling, shut off the
¼ in. ball valve to stop the oil flow.
9. Disconnect the oil sampling
arrangement.
10. Replace the plug on the ¼ in. ball
valve.
See Section 6.1 for product display panel
information.
Measurement mode
Standby mode
Use TransConnect
to stop a
measurement
Oil Drains
Standby mode
Remove plug from
¼ in. ball valve
Attach PTFE tubing
to1/4 in. ball valve
Attach other end of
tubing to stopcock
Attach equipment
to stopcock e.g.
syringe
Open ¼ in. ball
valve and take oil
sample
Close ¼ in. ball
valve and remove
tubing assembly
Replace plug on ¼
in. ball valve