Nilfisk-ALTO NEPTUNE 5-54 PE Service manual

NEPTUNE PE/DE

Service Manual

Jetwash Direct ltd

NEPTUNE PE-DE_en_Ver.1.0_October 2010

A. Safety instructions 5

B. Technical data 6 - 9

10 -17 C. Construction

D. Function

E. Troubleshooting

18 -37

38 -41

F. Service / Repair 42-62

G. Adjustment / Test 63-71

H. Wiring diagrams

Jetwash Direct ltd

72-92

Index

A. Safety instructions ................................................... 5

B. Technical data........................................................... 6

C. Constrution

D. Function

-Electrical.................................................................... 18

-Funktion PCB ............................................................ 24

-Pumps ....................................................................... 28

-By-pass valves & Unloader………………………….... 31

E. Troubleshooting

-Table ......................................................................... 38

F. Service / Repair

-Electrodes ................................................................. 61

-Maintenance………… ............................................... 62

G. Adjustment / Test

-NA5 ........................................................................... 63

-C3.............................................................................. 66

-NP5 ........................................................................... 67

H. Wiring diagrams


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3

Preface

This service manual contains detailed description of the main repair work on the Hot

Water High Pressure Washer, NEPTUNE PE—DE.

If operating errors are evident, refer the customer to the operating instructions.

A fault in the cleaner can have several causes as described in the section on troubleshooting.

Refer to the illustrated spare parts lists during repairs. They show the assembly position and the sequence in which the individual components should be assembled.

Repair manuals and TSB (Technical Service Bulletin) sheets should be available at the site where repairs are carried out.

It is not permitted to give them to third parties.

Use original Nilfisk-ALTO spare parts only.


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4

Safety instructions A

For your own safety

Before using the cleaner, always read the operating instructions and keep them readily available.

Repair work should be carried out by persons instructed and trained in repairing this product.

The high-pressure cleaner should only be used by authorized persons who have been instructed in its use.

Although extremely easy to operate, children should not be allowed to use the cleaner.


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5

Technical data

NEPTUNE PE

NEPTUNE 5-46PE NEPTUNE 5-54PE

Motor Manufacturer and type

Power

Fuel type

CCM

Fuel tank capacity

Motor RPM, adjusted

Pulley size

Motor oil type

Motor oil capacity

HK/RPM

Cm3

Liter

RPM mm

Liter

Honda GX 340

9,5/3600

Petrol

337

6,1

3550

SPZ 55,4/1

SAE 15/40

1,1

Type

Pump pressure

Machine outlet pressure bar bar

Water Quantity, high pressure l/min

Water Quantity, low pressure l/min

Suction capacity (feeded)

Pump inlet temperature meter

°C

Fuel pressure

Fuel consumption dt = 45 °C

CO

2

content (min.)

Soot rating

Efficiency

Onboard fuel tank

Heater rating

Delta T @ working pressure bar kg/h

%

%

Litre kW

ºC

12

3,9

10,5

0

92

57

68

75

NA5

188

167

12

13,5

3

35-40

Type

Effect

RPM @ HP and Boiler

PUlley Size

Belt dimension Motor/Gen.

Length

Width

Height

Weight

Sound power level CE, Lwa

High-pressure hose DN8

HP nozzle

W

RPM mm mm mm kg

Db m t16W-75

1000

2825

SPZ 63/1

SPZ 670

970

780

1000

208

105

15

0400

10

3,9

10,5

0

92

57

81

81 t16W-75

1000

2825

SPZ 60/1

SPZ 670

970

780

1000

208

105

15

0450

Honda GX 390

11,0/3600

Petrol

389

6,1

3400

SPZ 55,4/1

SAE 15/40

1,1

NA5

198

170

13,5

15

3

35-40

B

6


Jetwash Direct ltd

Technical data

NEPTUNE PE

NEPTUNE 7-61PE NEPTUNE 5-85PE


Power

Fuel type

CCM

Fuel tank capacity

Motor RPM, adjusted

Pulley size

Motor oil type

Motor oil capacity

HK/RPM

Cm3

Liter

RPM mm

Liter

Honda GX 390

11,0/3600

Petrol

389

6,1

3550

SPZ 55,4/1

SAE 15/40

1,1

Type

Pump pressure bar

Machine outlet pressure bar


Water Quantity, low pressure


Pump inlet temperature l/min meter

°C

Fuel pressure

Fuel consumption dt = 45°

C

CO

2

content (min.)

Soot rating

Efficiency

Onboard fuel tank

Heater rating


%

%

Litre kW

ºC

11

4,6

10,5

0

92

57

87

70

C3

202

192

16

18

3

35-40

Type

Effect

RPM @ HP and Boiler

PUlley Size


Length

Width

Height

Weight

Sound power level CE,Lwa


HP nozzle

W

RPM mm mm mm kg

Db m t16W-75

1000

2825

SPZ 63/1

SPZ 670

970

780

1000

210

105

15

0500

12

5,75

10,5

0-1

92

57

111

70 t16W-75

1000

2825

SPZ 60/1

SPZ 670

1130

910

1050

260

106

15

0650

Honda GX 630

20,8/3600

Petrol

670

20 (External tank)

3340

SPZ 80/4

SAE 15/40

1,9

NP5

210

195

20

21,5

5

35-40


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B

7

Technical data

NEPTUNE PE

NEPTUNE 5-51DE NEPTUNE 7-66DE


Power

Fuel type

CCM

Fuel tank capacity

Motor RPM, adjusted

Pulley size

Motor oil type

Motor oil capacity

HK/RPM

Cm3

Liter

RPM mm

Liter

Type

Pump pressure bar






°C

Fuel pressure

Fuel consumption dt = 45°

C

CO

2

content (min.)

Soot rating

Efficiency

Onboard fuel tank

Heater rating


%

%

Litre kW

ºC

Type

Effect

RPM @ HP and Boiler

PUlley Size


Length

Width

Height

Weight



HP nozzle

W

RPM mm mm mm kg

Db m

10

3,9

10,5

0

92

57

81

81 t16W-75

1000

2825

SPZ 63/1

SPZ 670

970

780

1000

220

110

15

0450

Yanmar

10/3600

Diesel

406

5,5

3530

SPZ 80/3

SAE 15/40

1,65

NP5

185

176

13,5

15

3

35-40

12

4,85

10,5

0-1

92

57

111

76 t16W-75

1000

2825

SPZ 60/1

SPZ 670

1130

910

1050

315

112

15

0650

Ruggerini

16/3500

Diesel

-

20 (External tank)

3500

-

SAE 15/40

1,8

C3

185

170

18,7

20

5

35-40


Jetwash Direct ltd

B

8

Technical data

NEPTUNE PE

NEPTUNE 7-72DE


Power

Fuel type

CCM

Fuel tank capacity

Motor RPM, adjusted

Pulley size

Motor oil type

Motor oil capacity

HK/RPM

Mitsubishi

16/1630

Diesel

1318 Cm3

Liter 20 (External tank)

RPM 1600 mm -

SAE 15/40

Liter 4,2

Type

Pump pressure bar






°C

Fuel pressure

Fuel consumption dt = 45°C

CO

2

content (min.)

Soot rating

Efficiency

Onboard fuel tank

Heater rating


%

%

Litre kW

ºC

12

5

10,5

0-1

92

57

111

76

C3

200

185

19,5

21,5

5

35-40

Type

Effect

RPM @ HP and Boiler

PUlley Size


Length

Width

Height

Weight



HP nozzle

W

RPM mm mm mm kg dB m t16W-75

1000

2825

SPZ 63/1

SPZ 670

1130

910

1050

510

99

15

0640


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B

9

NA5 pump

Construction C

Overview NEPTUNE 5-46PE and 5-54PE

The NEPTUNE 5-46PE is designed with a

NA5 high pressure pump, a NEPTUNE 5 boiler and a HONDA GX340 motor.

5-54PE has a Honda GX390 motor

A small special hexagon key for easy adjustment of the fuel pressure is placed in the electric box in all

NEPTUNE PE/

DE machines

Fuel pump access through the square hole on the right side of the fuel tank.

Honda motor

230V Generator

Water regulation—pump

By-Pass valve

Temperature sensor—pump

Oil container w/ oil level switch


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Temperature sensor exhaust

Temperature sensor water outlet

Flow switch 1 and 2

10

NEPTUNE 7-61PE, front side

Construction C

Overview NEPTUNE 7-61PE

The NEPTUNE 7-,61PE is designed with a C3 high pressure pump, a Honda

GX390 motor with 13 HP, control system same as on the NEPTUNE 3, and a

NEPTUNE 5 boiler


NEPTUNE PE/

DE machines

Fuel pump access through the square hole in the fuel tank.

Water outlet

Honda Motor

C3 pump

Water Break tank, OPTIONAL

Water regulator

Anti Scale container, OPTIONAL

Wheels, OPTIONAL

NEPTUNE 7-61PE, front side


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11

NEPTUNE 7-61PE, boiler top

Construction C


IN

OUT

Flow- switch

Flow- switch

Temperature

Sensor

Electrodes

Temperature sensor, boiler exhaust

Flame sensor

Fuel nozzle

12


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NEPTUNE 7-61PE, backside

Construction C


Generator, 230V Charging relay Top cover


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13

Construction C


The NEPTUNE 5-85PE is designed with a NP5 high pressure pump, a Honda GX630 motor with

20 HP, control system same as on the NEPTUNE

3, and a NEPTUNE 7 boiler



NEPTUNE PE/

DE machines

Honda motor

NP5 pump


Oil glass w/level switch

Water inlet

Unloader

Safety valve.

(This safety valve is used only on 5-

85PE and 5-

51DE, becasue the unloader does not have a safety valve).

Generator

Battery—12V


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14

Construction C

Fuel pump access through the square hole fuel tank.

Overview NEPTUNE 5-51DE

The NEPTUNE 5-51DE is designed with a NP5 high pressure pump, a Yanmar motor with 10 HP, control system same as on the NEPTUNE 3, and a NEPTUNE

5 boiler.


NEPTUNE PE/

DE machines on the right side of the

Battery 12V Generator

230V

Yanmar motor

Safety valve (only on 5-51DE & 5-85DE)

Unloader & water regulator

NP5 pump

Oil container w/level switch

Thermal dump valve



Flow switch 1 and 2

15


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Construction C


The NEPTUNE 7-66DE is designed with a

C3 high pressure pump, a Ruggerini motor with 16 HP, control system same as on the

NEPTUNE 3, and a NEPTUNE 7 boiler.



NEPTUNE PE/

DE machines

Rugerinni motor

Oil container w/level sensor

Gera box between motor and pump

C3 pump

By-pass valve W/water regulator




Flow switch 1 and 2


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16

Construction C


The NEPTUNE 7-72DE is designed with a C3 high pressure pump, a Mitsubishi motor with 15 HP, control system same as on the NEPTUNE 3, and a

NEPTUNE 7 boiler.



NEPTUNE PE/

DE machines

Mitsubishi motor

Oil container w/level sensor


By-pass valve w/ water regulator

C3 pump



Flow switch 1 and 2


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17

Function D

Functional desription of NEPTUNE 5-46PE, 5-54PE and 7-61PE

Start the motor by shortly turning the key (5) into the start position. When you let go the key, the key moves back to the ”ON” position.

When the key is turned to the start position, the start relay (13) is pulled, and the start motor is turning the motor.

In the ”ON” position the battery is continuously charged by the AC generator (9) through the rectifier

(2).

With the key in “ON” position, the hour counter will count, no matter if the motor is running or not.

18


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Function D

Functional desription of NEPTUNE 5-46PE, 5-54PE and 7-61PE

Circuit board (A2) is monitoring the thermostat on the high pressure pump (15), the motor oil switch (8) and the oil level switch in the high pressure pump.

If the thermostat on the pump or the motor oil switch is closing (failure) is respectively input 9 and input 8 connected to ground, which causes the LED to light, and at the same time output 15 is connected to ground.

If the oil level switch closes (failure) input 5 is connected to ground, output 15 is also connected to ground, which pulls the relay (6) and the motor stops. Also the LED for low oil level will light up.

On this model it is important that the jumper on A2 (2A) is NOT mounted.


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19

Function D

Functional desription of NEPTUNE 5-51DE

Start the motor by shortly turning the key (5) into the start position. When you let go the key, the key moves back to the ”ON” position.

When the key is turned to the start position, the start relay (13) is pulled, and the start motor is turning the motor.

Circuit board (A2) is monitoring the thermostat (E) on the high pressure pump, the motor oil switch

(D) and the oil level switch in the high pressure pump.

If the thermostat (E) on the pump is closing (failure) is input 8 connected to ground, which causes the LED to light, and at the same time output 15 is connected to ground.?????????????????????

If the charging generator (I) is not charging, wire (Y) in the regulator (O) is getting 12V and also the input 7 on A2 is then getting 12V, which makes the charging light lighten.

On this model it is important that the jumper on A2 (2A) is NOT mounted, for the charging system to work properly.


20

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Function D


When the key (S1) is turned to start, the start relay is pulled and the motor starts. Then let go the key, and it moves back to the ”ON” position.

The motor oil pressure switch (B10) is a normally closed switch. In closed position (motor not running) the switch is connected to ground. When the motor starts and the RPM increases the motor oil pressure increases the switch opens and there is no connection to ground anymore. When no connection to ground there is no ground on output 15, which means the motor runs.

If output 15 is connected to ground 5 sec. after the key is turned back to “ON” position, contactor K3 is pulled, and the fuel pump is disconnected for 9 sec. (done by TIM 2—Timer for motor stop) — motor stops.

If there is a failure on sensor B5, B 10 or B11, and by that output 15 is connected to ground, the fuel pump will be disconnected in 9 sec., and the motor will stop.

If the 12V charging is not functioning input 6 on A2 will be connected to ground.

IMPORTANT: JUMPER ON A2 MUST BE MOUNTED


21

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Function D


When the key (S1) is turned to the ”ON” position, the glow timer (Tim1), and the glow relay (K3) is activated, and the glow plugs (R1) are heating, and also the glow lamp on A2 is lightening. After a short while the timer runs out and the glow relay opens.

Now the key can be turned to the start position, and the starter coil (Y2—red wire), together with the holding coil (Y2—white wire) is pulled and runs the starter motor, and the motor will start.

Now release the key, so it goes back to the “ON” position, the starter coil (Y2—red wire) is no longer pulled, but the holding coil (Y2—white wire) is kept hold through the contactor (K3).

If there is a failure on B5 (oil level switch pump oil), B10 (Motor oil switch), B11 (thermo switch motor) or B12 (thermo switch high pressure pump), output 15 on A2 is connected to ground, contactor

K3 opens and the holding coil Y2 opens and the motor stops.

It is important that the jumper is mounted on the circuit board (A2). When jumper mounted there is

12VDC on output 7 on A2. Output 7 is connected to connection “R” on the generator. The generator

(G1) can only give output, if there is 12VDC present on connection “R”. If the generator is “worn/ defect” the DC voltage on connection “L” drops down to 0 VDC, and input 6 on A2 in then connected to ground, and the charging LED will light up.


22

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Function D

Functional desription of NEPTUNE 5-85PE

If there is a failure on B5 (oil level switch pump oil), B10 (motor oil switch) or B12 (thermo switch high pressure pump) is output 15 on A2 connected to ground. At the same time input “F” on the

Honda motor is connected to ground, and the Honda motor will stop.

IMPORTANT: JUMPER ON A2 MUST BE MOUNTED


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23

Function D

Functional desription of Circuit Board, A1

The circuit board used in all NEPTNE PE/DE machines is the same as used in NEPTUNE 3.

The only difference is the following bridges which are mounted on the circuit board in the NEPTUNE

PE/DE machines.

X4,5 to X5,6—oil level switch high pressure pump. Oil level switch is moved to circuit board A2

X4,1 to X4,2—Anti-stone

X3,5 to X3,6—Thermal switch in high pressure pump motor.

24


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Function D

Functional desription of Circuit Board, A1

Control Circuit Board (A1) is functioning the same way in all the NEPTUNE PE/DE models. The power supply to A1 is supplied by the 230V generator G2, which is driven by the motor. This means that the motor must be running—and running at full RPM—before the A1 is working. In cold water mode the S1 main switch can be in position ON or OFF. If S1 is turned to the temperature area (red) the hot water mode is activated.

When S1 is turned to ON power is supplied through the fuse F1 to the microprocessor. The microprocessor is starting up, and the 5 status LED’s is lightening up for 1 sec. If there is a failure during start up, the control circuit board goes into failure mode.

If the S1 main switch is turned to “hot water mode”, and the spay gun is open, and desired temperature set at S1, B1 temperature sensor is measuring lower temperature that the set point at S1, and

B9 fuel level sensor is measuring fuel in the tank, and B2 flow switch, and B4 flow switch is registering water flow, the burner motor M2 is started, and the ignition transformer T2 is started over the burner relay K3. A high voltage spark is generated between the electrodes in the burner.

The burner motor M2 is driving the burner fan, which is blowing pre-heated air into the boiler. The self-sucking fuel pump is pumping fuel pressure up to the fuel solenoid valve Y1. When the burner motor/fan has been running in 1 sec., the fuel solenoid valve Y1 opens, and the fuel is pumped under pressure to the fuel nozzle. The atomized fuel is leaving the fuel nozzle and is ignited.


25

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Function D

Functional desription of Circuit Board, A1—Continued

The flame sensor B7 is controlling if the fuel is ignited, and if it is (the flame sensor can see the flame) it “allows” the burner to burn.

If the flame sensor don’t see the flame after 4 sec. (when S1 is in hot water mode), the fuel solenoid valve will close, and the burner will be stopped.

If the display is flashing in the LED’s, it can be due to too low RPM on the motor.

If the LED’s are flashing, it means that the voltage is too low to maintain the circuit board.

The flashing LED’s means that the display is “re-starting” all the time.

26


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Function D

Functional desription of Circuit Board, A1—Continued

Circuit Board A2 (A1)

Circuit board (A2) has LED’s for the motor, e.g. water temperature, motor oil level etc.

Control Circuit Board A1

Control Circuit Board:

Pos. 1: The heating and ON/OFF switch (S1)

Pos. 2: Heating Relay (K2)

Pos. 3: LED’s

Pos. 4: Fuse—Self-resetting ”Pico fuse”

Pos. 5: Fuse

Pos. 6: Fuse

On the above picture is the correct setting of the circuit board.

Arrow 1

Setting is WITHOUT JUMPER = By-pass time active

Arrow 2:

Setting is JUMPER MOUNTED ON PIN 2 AND 3

= Flame Sensor active.

27


Jetwash Direct ltd

Function D

Cam shaft

NEPTUNE PE/DE—NP5 PUMP

The 3piston radial pump NP5 is used in the NEPTUNE 5-85PE and 5-51DE

OUT

OIL

Pressure valve

Shaft

IN

Suction valve

The three pistons are driven by the motor via a belt drive. The cam shaft transforms the rotation power into the pistons reciprocating movements.

The movement and the diameter of the pistons decide the water volume which can be sucked into the suction valves and pressed out through the pressure valves.


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28

Function D

NEPTUNE PE/DE—NA5 PUMP

The 3piston NA5 pump is used in the NEPTUNE 5-46PE and 5-54PE

Honda motor and D-bearing cover

Pistons, cylinder block,cylinder head and sealings

Water inlet

By-pass valve with water regulator

The NA5 pump is connected to the Honda motor with a direct drive.

By-pass valve function is described later in this service manual.

29


Jetwash Direct ltd

Function D

NEPTUNE PE/DE—C3 PUMP

The 4 piston C3 pump is used in the NEPTUNE 7-61PE, 7-66DE and 7-72DE

The wobble disc is mounted directly on the motor shaft.

Water is sucked through the suction valves and out through the pressure valves and the piston in the by-pass valve. The piston has two small holes where the water is running through in order to create a pressure drop, which make sure the valve cone is closed during operation.

When water flow is interrupted, the pressure rises until the safety valve opens. Because of the achieved pressure drop, the valve cone is pressed to open so the water re-circulates at a pressure < 10 bar.

Water quantity is regulated by a handle in the end of the by-pass valve. When turning the handle clockwise, the by-pass valve cone will be forced open, so some of the water is recirculating in the pump.

30


Jetwash Direct ltd

Function D

B

A

By-Pass valve function NEPTUNE 5-46PE and 5-54PE

G

F

H

E

D

I

K

J

C

Working pressure

Machine is started and the gun ”J” with correct lance/nozzle is open -

Machine runs in working pressure ”K”:

The water is pressed from the pump outlet ”A” into the by-pass housing ”C”.

The water runs through the bottom of by-pass housing ”C” and directely to the outlet ”I”.

Due to the water pressure the by-pass piston ”B” is pressed up and the seat ”E” is closed.

G

F

E

D

H

K

I J

C

B

A

By-pass pressure

Machine is started and the gun is closed - By-pass pressure:

When the gun ”J” closes, the pressure inside the by-pass housing equalizes and the by-pass piston ”B” is pressed down by the tension of it’s spring. The seat ”E” in the top of by-pass piston opens. The water runs from the pump outlet ”A” into the by-pass housing ”C”. Due to the closed gun ”J” and the opening in the by-pass seat ”E”, the water runs back into the suction side of the pump through the valve ”D”.


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Jetwash Direct ltd

Function D

By-Pass valve function NEPTUNE 5-46PE and 5-54PE

C

B

A

By-pass pressure

The by-pass pressure is determined of the spring tension in valve ”A”.

The tension is fixed and will bring out a by-pass pressure in about 30 - 35 bar.

Valve ”A” also secures the self suction ability.

The cut off pressure when the gun is released, is determined of the adjustment screw ”B”.

When the screw is tightened the cut off pressure will rice and by loosening it the pressure will fall.

The safety valve ”C” has no function under normal circumstances. The pressure of the safety valve is set to about 25 - 30 bar above the cut off pressure.

The safety valve will open if the by-pass valve is stocked and lead water to the suction side of the pump.

G

F

E

D

C

B

A

Water reduction

H

I

K

When the water regulation ”G” is turned counter clock wise, the seat ”H” opens and the water runs both to the outlet of the by-pass housing and in by-pass to the suction side of the pump.

The pressure ”K” will fall depending of the size of the opening in seat ”H”.

32


Jetwash Direct ltd

Function D

By-Pass valve function NEPTUNE 7-61PE, 7-66DE, 7-72DE

Operation:

The water from the pump is lead into the chamber ”A” in the by-pass valve.

From here the water passes through the holes “B” in the by-pass valve piston “C” and out to the high pressure nozzle. When water is pressed through holes in the piston “C”, there is a pressure drop over the piston (this means the pressure is higher on one side of the piston). This will keep the valve cone “D” closed against its seat

“E”, because the piston “C” is fixed to the valve cone.


By-Pass:

When the water consumption stops

(spray handle is released/closed), the pressure drop over piston “C” disappears, the pressure in the by-pass valve increases briefly until the safety valve “F” opens. The safety valve just opens briefly, and closes again. The safety valve opens when the pump pressure overcomes the tension of the spring in the safety valve. (The safety valve is adjusted to open 25-30 bar above normal working pressure). Now the valve cone “D” lift from its seat “E”, and water runs in by-pass.

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33

Function D

Unloader valve function NEPTUNE 5-85Pe AND 5-51DE

Unloader mounted on pump

Unloader function:

On the assumption that the black handle

(adjustment handle) on the unloader is turned all the way to max. pressure (clockwise).

When the pump is running the unloader piston (2) is pressed down it its seat (1), and all the water volume is going through the gun and out to the high pressure nozzle.

When the gun is released (no water flow out), the pressure in the unloader will rise, and the increased pressure will overcome the adjusted tension of the unloader spring (6), and the unloader piston (2) will be lifted up from its seat.

Water will now return through the seat (1) to the suction side of the pump (by-pass) mode.

Unloader disassembled


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34

Function

Flow switch function NEPTUNE PE

D

Flow switch

Plug with Shaft

Water supply connected to the machine.

Water from the pump is pressed through the high pressure hose to the first flow switch.

When water is entering the first flow switch, the piston with magnet is pressed to the top of the flow switch housing, and the reed switch is making contact and closing the circuit.

(Reed switch is a NO contact)

Water is now pressed through the second flow switch, the piston with magnet is pressed to the far end of the housing, and the reed switch is making contact and closing the circuit.

When the spray handle is released and the water flow stops, the flow switch pistons will move away from the reed switches, and the will brake off the circuit and the burner will stop.

When the water flow stops, the piston in the first flow switch will fall down and be stopped by the plug with the shaft. The plug with shaft is installed to reduce the movement of the piston.

The signals from the two flow switches must come simultaneously. (MAX. difference between the two signals are 4 seconds)

The signals from the flow switches are controlling the fuel pump solenoid valve. This to make sure that the burner is not starting if there is no flow of water through the heating coil.

35


Jetwash Direct ltd

Heat exchanger (schematic)

Fig. D.19:

1) Burner fan

2) Baffle plate

3) Fuel nozzle

4) Heating coil

5) Fuel pump

6) Fuel filter

7) Solenoid valve

8) Nozzle stock

9) Fuel return line

10) Ignition transformer

11) Ignition electrodes

12) Flame probe

13) Flue

14) Flame sheath

15) Flame funnel

16) Insulation

17) Water inlet

18) Water outlet

Function D

Heat exchanger NEPTUNE PE

The heat exchanger is the functional link between the heating subsystem and the water subsystem.

In "Hot water" mode the burner fan

(1) draws in air and conducts it laterally into the heat exchanger where it is routed upwards between the two jackets to the baffle plate

(2). This preheats the air before it mixes with the fuel spray from the fuel nozzle (3).

Cold water is fed to the inner circuit in which the temperature is highest.

This reduces in as much as possible any condensation on the surface of the heating coil (4).

At the same time fuel is drawn in from the fuel tank by the fuel pump

(5) through the filter (6). The fuel is conducted by the solenoid valve (7) to the nozzle stock (8) with the fuel nozzle (3). If no combustion is needed, the fuel goes back to the tank on the return line (9).

The ignition transformer (10) activated in "Hot water" mode generates ignition sparks across the electrodes (11) to ignite the fuel spray.

This process is monitored by the flame sensor (12).

In normal operation the hot exhaust flows downwards and upwards between the piping of the heating coil

(4) thus warming the water in the system.

The exhaust exits through the flue

(13).

36


Jetwash Direct ltd

Function D

Safety Thermal Temperature Sensor in boiler exhaust

Located in the heat exchanger outlet (flue) is a temperature-dependent resistor (Pt 100) functioning as a temperature sensor.

If the temperature in the heat exchanger outlet (actual temperature) exceeds the temperature set-point, the solenoid valve Y1 closes to interrupt the fuel feed. The temperature sensor is only activated in "Hot water" mode.

The safety thermal release mounted on the heat exchanger water inlet, is an absolute safety element on the heat exchanger.

If a fault is present, e.g. all control and safety devices fails, and hot water flows at high pressure from the heat exchanger back through the safety valve into the high pressure pump, the thermal release responds and shuts down the entire machine through the control circuit. Before restarting, the machine must cool down, the fault causing the heated water to flow in the wrong direction must be corrected, and a new thermal release fitted.

The flame sensor is a light-sensitive phototransistor.

The flame sensor checks for the presence of a flame.


Jetwash Direct ltd

37

Fault

Green LED illuminates.

⇒

Troubleshooting

Cause Remedy

Machine ready to opeate.

All LEDs flash once before the motor is turned on.

Yellow LED illuminates.

⇒ Fuel level is low.

•

Refill fuel. "Cold water" mode is possible.

Yellow LED flashes.

⇒ Alto Anti Stone level is

•

Refill Alto Anti Stone. low. "Hot water" and "Cold water" mode is possible.

Red LED illuminates.

⇒

Red LED flashes. ⇒

Pump oil level is low.

•

Refill pump oil (Chapter

F.1.3). The burner and

Jetwash Direct ltd motor are cut out. The green

hes.

LED extinguis-

Service interval: service

•

Service the machine. due in 20 hours. "Hot water" and "Cold water" mode is possible.

Red LED illuminates.

⇒


Service interval elapsed.

•

Service the machine.

"Hot water" and "Cold water" mode is possible.

E

38

Fault

Green LED flashes.

Green LED and red LED flash simultaneously.

⇒

⇒

⇒

⇒

⇒

⇒

⇒

⇒

⇒

⇒

⇒

Troubleshooting

Cause

Flow sensor fault.

Water tap closed or water flow inadequate.

Detergent tank empty.

Pressure rate control or

Vario Press set for too small amount of water.

Machine scaled up.

Remedy

•

See Chapter F.3.3,

F.3.5 and G.3.4."Cold water" mode is possible.

•

Requirements in Chapter B.

•

Refill detergent or set the SDR valve to "0".

•

Set the pressure rate control or Vario Press for a higher water flow.

•

Descale the machine.

Leakage or impermissible operating status through brief operation.

Spray pistol leaking.

HP hose, HP coupling or pipe leaking.

Detergent tank empty.

Filter clogged in water intake.

HP pump sucking in air.

•

The machine cuts out after being briefly operated three times. Reset: set the main switch to

"Off". Operate the pistol for > 3 s.

•

Check the spray pistol.

•

Tighten the screws, replace the HP hose or pipe.

•

Refill detergent.

•

Clean the filter

•

Correct leaking points.

E


Jetwash Direct ltd

39

Troubleshooting

Cause Remedy Fault

Green LED and red LED flash alternately

⇒ Motor/machine overheated (MT has triggered).

⇒ Thermal release B3 has

⇒ tripped.

⇒ 24 Vac fine-wire fuse F2 has blown.

Green LED flashes slowly & red LED flashes fast

⇒

⇒

Fault in fuel or ignition system, burner fault.

Flame probe (option) sooted up.

•

Set the main switch to

"Off". Allow the machine to cool.

•

Work without an extension cable or use an extension cable with a larger cross-section.

•

Possibly a phase failure: have the electrical connection checked.

•

Correct the cause of the fault (Chapter D.2.3.5) and replace the thermal release (Chapter F.7.4).

•

Correct the cause of the fault and replace the fine-wire fuse (Chapter

F.8.1).

•

See Chapter F.2.6 and

F.7. "Cold water" mode is possible.

•

If this option is fitted, remove it and clean it.

E

40


Jetwash Direct ltd

Fault

Green LED does not illuminate.

Pressure too low.

Machine runs jerkily.

⇒

⇒

⇒

⇒

⇒

Troubleshooting

Cause Remedy

No power to microprocessor.

•

Make sure the machine is plugged in.

•

Operate main switch S1.

•

Check the primary and secondary voltage (8

Vac) on transformer T1.

•

Pico fuse F1 has blown

(self-resetting). Wait un-

HP nozzle worn. til F1 is reset or, if the fault persists, replace electronic controller A1

(Chapter F.8.1).

•

Replace the HP nozzle.

•

Turn the pressure rate Pressure rate control or

Vario Press set for too low a pressure. control on the unloader valve in the direction

"+", or set the Vario

Press rotary knob

(accessory) on the pistol for a larger amount of water.

Flexo Power nozzle

Close the Flexo Power open. nozzle.

HP pump taking air in

•

Close the detergent dosfrom empty detergent ing valve. Take the tank spray pipe off the spray pistol. Operate the spray pistol and let the machine run until the air is expelled from the system and the pump works smoothly.

E

41


Jetwash Direct ltd

Service / Repair F

NA5 Pump


Jetwash Direct ltd

42

Valves

Service / Repair F

NA5 Pump

Fig.F.13: Valve housing

•

•

Dismount the valve housing from the cylinder block by the three M12 bolts.

Be aware of the o-rings and valve parts.

Fig.F.14: Thrust collar

•

•

Be carefull not to damage the surface inside when dismounting the thrust collar.

Inspect the thrust collar for damages before mounting.


• Carefully tip out the sleeves with an adequate screwdriver and replace them. Be careful not to scratch the surface.


•

•

Knock carefully on the back side of the valve seat to demount it or use an 8mm threaded pin and pull it out.

Replace with new parts.

43


Jetwash Direct ltd

Valves

Service / Repair F

NA5 Pump

Pic. F.17: Suction valves

• Overview of the placement of suction valve

parts.

Pic. F.18: Pressure valves

• Overview of the placement of pressure valve parts

Picture of piston guides

Fig.F.19: Pressure valves

•

•

The pressure valves can easily be taken out of the cylinder head.

Replace with new parts if necessary.

Fig.F.20: Pressure valve seat

• Take out the pressure valve seats with an adequate puller or use an 8mm

• Replace with new parts if necessary.

44


Jetwash Direct ltd

Cylinder Block

Service / Repair

NEW !

F

NA5 Pump

Fig.F.21: Cylinder block

• Overview of the placement of the parts in the cylinder block.

Fig.F.22: Oil Sleeves

• Take out the oil sleeves using an

• Be careful not to damage the surface of the cylinder block.

Oil seal and piston

Fig.F.23: Valve Kit 3~ - Exploded View

• To make replacement easier moisten the sleeves with soapy water.

• the spanner and a fiber hammer.

Fig.F.24: Pistons

•

•

Place sleeves, pistons and springs as shown.

Mount the cylinder block to the D-bearing cover by the two 6mm mounting screws.

45


Jetwash Direct ltd

Wobble disc

Service / Repair F

NA5 Pump

Fig.F.25: Pump head

• The cylinder head and the cylinder block is fastend to the D-bearing cover by two

6mm mounting bolts for the cylinder block and three 12mm bolts for the cylinder head.

Fig.F.26: D-bearing cover and wobble disc

• Overview of the parts inside the D-

Fig.F.27: Wobble disc

• The center bolt is fixing the wobble disc to the motor shaft and ensure the rotor to be kept in the right position in proportion to the stator.

Fig.F.28: Wobble disc removal

• Demount the wobble disc screwing a 1

6mm bolt into the threads. Tighten the bolt against the motorshaft and pull the wobble disc out.

46


Jetwash Direct ltd

D-bearing cover

Service / Repair F

NA5 Pump

Fig.F.29: D-bearing cover

• The D-bearing cover is mounted to the

Motor by four 6mm bolts.

• When the bearing is damaged, always replace the complete D-bearing cover.

Fig.F.30: Oil sleeve

• The oil sleeve in the D-bearing cover can be demounted carefully using a

screwdriver.

• Mount the oil sleeve by using an adequate box spanner and a fiber

hammer.


Jetwash Direct ltd

47

Service / Repair F

C3 Pump


Jetwash Direct ltd

48

Service / Repair F

C3 Pump

Mandrel no.: 1216506


Jetwash Direct ltd

49

Service / Repair F

C3 Pump

Ke n n ey

Duct

Mounting of textile sleeves by means of tool no. 1220090. It is an advantage if the sleeves havebeen in a water bath for 3-4 hours before mounting them. Do not forget to blow air through the ducts.


Jetwash Direct ltd

50

Service / Repair

Washer

O-ring

Thrust collar

Torque: 37 Nm

F

C3 Pump

Oil sleeve

Secondary sleeve

Spacer ring (Crovn)

Drain off the oil. Loosen the 8 bolts gradually (because of the spring load). Special box head no.1206762 may be used.

Mount new O-rings on studs with tool no. 1206812.

Always replace secondary sleeves when replacing pressure sleeves. Check that there is a free passage from the drain holes.

Spacer ring

Secondary sleeve

Back-up ring O-ring


Jetwash Direct ltd

51

Service / Repair F

C3 Pump

Carefully tip out the oil sleeves with an adequate screwdriver and discard them. Be careful not to scratch the surface.

Before mounting the new sleeves, it will be a good idea to moisten the sleeves with soapy water.

Mount new oil sleeves with punch no.1220429. Carefully knock or press them home.

Oil sleeve LP HP

Check the piston for wear in the pressure area and the area fPressure area

(rides on wobble disc) or oil sleeves. Check the ceramic for cracks. Remove any coating.

Pressure area, touches the bearing disk

Stainless steel


Ceramic

Jetwash Direct ltd

52

Service / Repair

Dismount locking ring on the rotor shaft.

The wobble disc is easily dismounted with puller no. 1205715 and special legs no. 1206150/1206168. Do not forget to remove the key before dismounting the

D-bearing cover.

Check bearing surfaces for wear. If in doubt, replace kit complete after approx.

2000 hours.

When mounting the D-bearing cover complete,protect the U sleeve with tool no.

1206598 which is placed on the shaft, before placing the cover.

Tool : 1206598

F

C3 Pump

Pittings

Check the bearing surfaces for wear. As long as the wear is even and shiny without pittings or grooves, the wobble disc can be

When mounting the wobble disc, lubricate the bearings with oil. The big roller bearings are identical. Do not forget to mount the circlip on the rotor shaft. Refill with 1 l oil type Castrol Alphasynt ISO 150.


Jetwash Direct ltd

53

Service / Repair F

NP5 Pump

Motor

Pump h ousing .

Valve cover & seals.

Pistons & oil seals.


Jetwash Direct ltd

54

Service / Repair F

NP5 Pump

Dismount the brass plug on the cylinder head with a 21mm fixed spanner and remove the valves.

Do not scratch the inside of the valve chamber during removal!

When you replace the valves give the o-rings an inspection for damage before mounting.


Jetwash Direct ltd

55

Service / Repair F

NP5 Pump

Be careful when you dismount thrust collar because you can easily damage the surface inside. Give the thrust collar an inspection before mounting.

When mounting the sleeves and the spacer, remember lubricating.

When dismounting the suction sleeves, use a screwdriver to tip out the sleeves.

Do not reuse the sleeves.

Clean the thrust collar and lubricate before mounting the sleeves as shown in the ilustration.

5

8

2

4

6

Inspect the the thrust collar for marks, lubricate and mount it with your fingers.


When you mount the cylinder head tighten the bolts in the shown sequence Use a 6mm hexagon wrench.

Jetwash Direct ltd

56

Service / Repair F

NP5 Pump

Piston & Oil Seal

To inspect the plunger for cracks. Spray the inside of the plunger with fast evaporating cleaner such as a brake cleansing agent. The brake cleansing agent will take a second longer to evaporate from the crack, thus making the crack visible.

Carefully inspect and replace as needed, Orings and backup rings on the plunger rod prior to reinstalling the plungers.

Backup-ring

O-ring

Copper washer

Oil seal

Brass slinger plate

T orque

106 Inch pounds

8,8 ft.lbs

13NM

Also clean the brass slinger plates before reinstalling the plungers.

Do not re-use the copper washers!

Use one drop of medium strength thread locker on each plunger rod when reinstalling plunger nut and torque to specifications.

Oil seals must be changed if there any signs of leaks or if they are removed.

The recommended way to remove the oil seals which are pressed into the pump body is to sew the seal with an awl and pry down.

When installing new seals, a light coating of lubricant on the seals may ease the installation.

Make sure it is pressed in using equal pressure around the entire circumference.


Jetwash Direct ltd

57

Service / Repair F

NP5 Pump

NP5 Unloader valve

NP5 Unloader valve

NP5 Unloader valve parts


Jetwash Direct ltd

58

Service / Repair F

Boiler

The boiler is the heat generating part of a hot water machine. It consists of a labyrinth-constructed tube coil, which encloses the combustion chamber. The tube coil is enclosed by a double container with boiler jacket, bottom, and top in a sandwich construction, between which the combustion air is routed into the combustion. An insulating material placed in the bottom of the boiler makes sure that the inner bottom, among other things, is protected from superheating.

Flame sensor Electrodes Fuel nozzle

Exhaust

Water outlet

Water inlet

Top plate

Air distributor

Flame tube top part

Burner tube

Flame tube

Air inlet Fixation spacer

Outer jacket

Inner jacket


Jetwash Direct ltd

Insolation

Mounting plate

59

Service / Repair F

Boiler

5

4

2

4

3

6

7

X

8

Check the flame tube marked with X and Y. It is important that they are solid and complete.

Y is a part of the coil

8 and cannot be separated.

Clean the coil.

Remove the outer top cover and mount the lifting tool over the two coil ends and fix it with the nuts. Dismount the 4 nuts

"Arrows"and hook up the crane and lift out the coil.

Y

10

Burner Unit.

6. Fan

1

2

3

4

5

6

7

9

Clean up deposits and change the isolation if needed.

Burner fan and fuel pump.


Jetwash Direct ltd

60

Electrodes

6mm

Service / Repair F

Burner Electrodes

5 mm

4 mm

Spring washer

The electrode is adjusted from factory.

If the distance between the legs becomes greater than 4 mm, the electrode must be changed.

The electrode 18 is self adjusting the position on the nozzle by a spring washer 19 under the fixing screw 20.

11

12

13

4

6

7

5

10 9

14

17

18

19

20

21

22


Jetwash Direct ltd

The flame sensor 9 must be fixed with 5 in the right position.

Clean the flame sensor

61

Service / Repair F

Maintenance plan

Water filters

Oil filter

Checking the pump oil quality

Changing the pump oil

Emptying the fuel oil tank

Weekly

NP 5 pump only:

After the first 50 operating hours

C3 and Na5 pump every six months or

500 operating hours

As required

Maintenance


Jetwash Direct ltd

62

Adjustment / Test G

IMPORTANT:

When torque settings are made, all parts — Pump, screws etc. must have a temperature at 20°C.

NA5 pump

Torque specifications

20 Nm

20 Nm

Fig.G.01: Wobble disc

Fig.G.02: Cylinder block

65 Nm

25 Nm

Fig.G.03: Cylinder head Fig.G.04: Venting valve

10 Nm

By hand

Fig.G.05: By-pass housing Fig.G.06: Venting valve

40 Nm

Fig.G.07: Outlet fittings


Fig.G.08: Water regulation

Jetwash Direct ltd

40 Nm

63

Adjustment / Test G

NA5 pump

Adjustment of by-pass system.

A

Fig.G.09: Pressure gauge

Dismount the test plug in the by-pass housing and mount a pressure gauge instead.

Fig.G.10: Test tap

Connect a test tap (A), hose and pressure gun to the outlet of the machine.

B

Fig.G.11: Safety valve Fig.G.12: Pressure bolt

Close the safety valve completely.


Adjust the test tap (A) and the pressure bolt

(B) so it couples 20-30 bars higher than working pressure, when the pressure gun is closed— CUT OFF PRESSURE. After the cut off pressure is reached the machine runs in by-pass untill the pressure gun is opened.

The working pressure is stated in the technical data sheets chapter B.

64

Jetwash Direct ltd

Adjustment / Test G

NA5 pump


Pressure bolt

When adjustment is done, lock the bolt with the counter nut.

Safety valve

Then let the machine run just below the cut off pressure (working + adjustment) and adjust the safety valve out until it couples out

(go into bypass). Then you adjust the adjusting “screw” a ½ turn back and lock it with the counter nut.

Finalize the adjustment with locking glue/ paint on both the bolt and the safety valve.


Jetwash Direct ltd

65

Adjustment / Test G

C3 pump


Pos. 1 Safety valve adjustment

Pos. 2 Set screw for min. Water adjustment

Pos. 3 Min. Water adjustment screw

Minimum water volume (and pressure) adjustment:

First mount test manometer with correct high pressure test nozzle.

Turn the black handle on the water regulator all the way clockwise. (Min. Water volume)

Start the motor and run at full RPM.

Test manometer must show approx. 30 bar. If this is not the case, loosen set screw (pos. 2), and then turn the min. Water adjustment screw (pos. 3) untill you reach approx. 30 bar.

Safety valve adjustment:

First mount test manometer without test nozzle—just open outlet.

Turn the black handle on the water regulator all the way counterclockwise. (Max.. Water volume)

Start the motor and run at full RPM.

Slowly close the valve on the test manometer, and read the pressure when the safety valve opens. (That will be the pressure just before the pressure drops)

The opening pressure for the safety valve must be 25-30 bar above normal working pressure.

To adjust the opening pressure, loosen the lock nut (pos. 1) with a 22 mm Open/ring spanner.

Then adjust the safety valve by turning the adjustment screw with a 6 mm. Allen Key, When turning clockwise—opening pressure increases, and counterclockwise it decreases.


Jetwash Direct ltd

66

Adjustment / Test G

NP5 pump

Adjustment of Unloader system.

Turn the black handle clockwise as far as it can.

This is max. pressure adjustment.

13 mm Box spanner

Using a screwdriver or similar tool, to remove the cap on top of the unloader.

Loosen the lock nut on the pressure adjustment bolt. Use a 13 mm. box spanner.


Adjust the pressure with a 7 mm. Hexagon

Allen Key the following way.

Start machine with correct HP nozzle.

Loosen unloader until pressure drops, then turn ½ turn clockwise, to obtain full pressure again.

67

Jetwash Direct ltd

Adjustment / Test G

NP5 pump

Adjustment of Unloader system.

When the correct pressure is adjusted, tighten the lock nut with a

13 mm. Box Spanner.

Mount the cap on top of the unloader. Now the correct adjustment of the unloader is done. By turning the handle counterclockwise, you can reduce the pump water volume and pressure.


Jetwash Direct ltd

68

Adjustment / Test G

Burner settings.

Note: Higher CO2 concentrations at different barometric pressure, altitude or temperature and poor quality of the used fuel can lead to faster soot deposition on the heating coil of the heat exchanger.

Preparation

1. Set the fuel pressure.

2. Let the machine run in "Hot water" mode for at least two minutes so that it reaches operating temperature and meaningful results can be measured.

Note: Machines that are primarily used for a brief period should run continuously for about half an hour in "Hot water" mode before an exhaust measurement.

Measurement

3. Determine the soot rating with a soot pump and soot rating reference scale. The figure should not exceed "1". Otherwise, open the air flap a little and repeat the measurement. Repeat the procedure until the specified value is obtained.

.

4. Then the CO2 content in the exhaust, the intake and exhaust temperature are determined. This can be done with conventional meters or with an electronic meter like the TESTO 325, which measures and displays all relevant data.

If the measured value is too low, close the air flap a little and check the soot rating and Co2 content again.

Repeat all settings until all specified values are obtained.

5. Finally seal the set screw (arrow A) of the air flap with varnish.

Fuel pressure setting.

• Mount pressure gauge on the fuel pump.

• Adjust the fuel pressure according to the values in Technical data chapter A.

Air flap.

• The air flap on the side of the burner fan is adjusted by a self-locking spindle on a set screw. Turning clockwise increases the air intake, turning counterclockwise reduces it.

69


Jetwash Direct ltd

Burner settings.

Adjustment / Test G

Fig.G.17: Soot raiting

Determine the soot rating with a soot pump (1) and soot rating reference scale. The figure should not exceed "1". Otherwise, open the air flap (Fig.G.07) a little and repeat the measurement. Repeat the procedure until the specified value is obtained.

Fig.G.18: Burner measurements.

The CO2 content in the exhaust, the intake and exhaust temperature are determined.

This can be done with conventional meters or, as in Fig. G.08, with an electronic meter like the TESTO 325 (4), which measures and displays all relevant data.

If the measured value is too low, close the air flap (Fig.G.06) a little and check the soot rating and Co2 content again.

1. BR1

2. BR2

3. X5—For Datalogger and Service Interval

4. ”Fuel” LED

5. ”Antistone” LED

6. ”Service” LED

7. ”Pump Oil” LED

8. ”Operation” LED

Service time setting:

Switch off machine with S1. install a jumper on X5 between pin 3 and 5. Switch on machine

(cold water mode). With the temperature setting knob it is now possible to set a new service interval. The reading is done by the LED’s (4,5,6,7 and 8), where (4) is 100 hours, 4+5 is 200 hours and so on, up to 500 hours when all LED’s are on. If setting is not changed for 3 sec., the setting is saved. This can be seen when the chosen LED’s are flashing. Machine must now be switched off, and the jumper removed from X5. Default service setting from factory is 200 hours.


70

Jetwash Direct ltd

Adjustment / Test

Boiler

G

1.

2.

3.

4.

5.

6.

Fig.F.49. Boiler top

Heating system - Overview.

1. Ignition Transformer.

2. Ignition cords.

3. Ignition electrodes

4. Flame sensor.

5. Fuel nozzle.

6. Air distributer.

4mm

5mm

5mm

Fuel nozzle. Fuel nozzle.


Jetwash Direct ltd

71

Wiring diagrams H

NEPTUNE 5-46PE 1 OF 3


Jetwash Direct ltd

72

Wiring diagrams H



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73

Wiring diagrams H



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Wiring diagrams H

NEPTUNE 5-54 AND 7-61PE 1 OF 3


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75

Wiring diagrams H



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76

Wiring diagrams H



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77

Wiring diagrams H

NEPTUNE PE 1 Cylinder Honda, Page 1 of 3


Jetwash Direct ltd

78

Wiring diagrams H



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Wiring diagrams H



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Wiring diagrams H



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81

Wiring diagrams H



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82

Wiring diagrams H



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83

Wiring diagrams H

NEPTUNE 5-51DE 1 OF 3


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84

Wiring diagrams H



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85

Wiring diagrams H



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86

Wiring diagrams H



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Wiring diagrams H



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Wiring diagrams H



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Wiring diagrams H



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Wiring diagrams H



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Wiring diagrams H



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92

Notes


Jetwash Direct ltd

93

JETWASH DIRECT LTD

www.jetwashdirect.co.uk

[email protected]

Jetwash Direct ltd

Nilfisk-ALTO NEPTUNE 5-54 PE Service manual

NEPTUNE PE/DE

Service Manual

NEPTUNE PE

Functional desription of NEPTUNE 5-46PE, 5-54PE and 7-61PE

Functional desription of NEPTUNE 5-46PE, 5-54PE and 7-61PE

Functional desription of NEPTUNE 5-51DE

Functional desription of NEPTUNE 7-66DE

Functional desription of NEPTUNE 7-72DE

Functional desription of NEPTUNE 5-85PE

Functional desription of Circuit Board, A1

Functional desription of Circuit Board, A1

Functional desription of Circuit Board, A1—Continued

Functional desription of Circuit Board, A1—Continued

NEPTUNE PE/DE—NP5 PUMP

The 3piston radial pump NP5 is used in the NEPTUNE 5-85PE and 5-51DE

NEPTUNE PE/DE—NA5 PUMP

The 3piston NA5 pump is used in the NEPTUNE 5-46PE and 5-54PE

NEPTUNE PE/DE—C3 PUMP

The 4 piston C3 pump is used in the NEPTUNE 7-61PE, 7-66DE and 7-72DE

By-Pass valve function NEPTUNE 5-46PE and 5-54PE

By-Pass valve function NEPTUNE 5-46PE and 5-54PE

By-Pass valve function NEPTUNE 7-61PE, 7-66DE, 7-72DE

Unloader valve function NEPTUNE 5-85Pe AND 5-51DE

Flow switch function NEPTUNE PE

Heat exchanger NEPTUNE PE

Safety Thermal Temperature Sensor in boiler exhaust

NA5 Pump

NA5 Pump

NA5 Pump

NEW !

NA5 Pump

NA5 Pump

NA5 Pump

C3 Pump

C3 Pump

C3 Pump

C3 Pump

C3 Pump

C3 Pump

NP5 Pump

NP5 Pump

Jetwash Direct ltd

NP5 Pump

NP5 Pump

NP5 Pump

Boiler

Boiler

Burner Electrodes

Maintenance

IMPORTANT:

When torque settings are made, all parts — Pump, screws etc. must have a temperature at 20°C.

Boiler

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