Hawk 8H-2-10-120 Operating

Brand: Hawk

Model: 8H-2-10-120

Type: Operating

8H-2-10-120

High Pressure Cleaner

Operating Instruction

SPECIFICATIONS

8H-2-10-120

NST1012C

120 bar

10 l/min

2.2 kW

230V

1450 rpm

0.4

Do not

remove safety

devices

Gloves & protective

clothing must be

worn

Goggles & protective

masks are

mandatory

Do not

point the gun

at a person

Hawk cleaner model

Hawk pump model

Pressure of this unit

Volume of this unit

Motor

Motor Voltage

Motor speed

Nozzle size

Pump serial number

Motor serial number

Production number

SAFETY INSTRUCTIONS

The following safety instructions are listed as a guide only,

consult your local safety officer before use. Monitor

Distributors cc accepts no liability for loss or damage

caused by improper use.

HAWK pumps are designed to pump clean water. Before

using salt water or chemicals consult your distributor.

Please consult your distributor if you are not clear on any of

the following instructions.

Ensure that protective clothing is worn at all times, including

protective eye wear.

Never reach into the spray fan with your fingers or hands,

as the high pressure may cause serious injury.

Always secure the gun with the safety catch before taking

off the spray tip, or during work breaks.

Never point the gun at yourself or anyone else.

Do not under any circumstances jam or wire the trigger in

an open position.

LIMITED MANUFACTURER'S

WARRANTY

HAWK products are warranted by the manufacturer to be

free from defects in workmanship and materials of

construction for a period of one year from the date of

purchase. All products subject to this limited warranty shall

be returned, prepaid for inspection, repair or replacement to

the manufacturer's representative.

The express limited warranty set forth herein is in lieu of all

other warranties, express or implied, including, without

limitation, any warranties of merchantability or fitness for

particular purpose and all such warranties are hereby

disclaimed and excluded by the manufacturer.

Repair or replacement of defective products as provided is

the sole exclusive remedy provided hereunder and the

manufacturer shall not be liable for any further loss,

damages or expenses, including incidental and

consequential damages, directly or indirectly arising from

the sale or use of this product.

Unauthorized use of replacement parts not originally

supplied by the manufacturer automatically voids this limited

warranty.

This warranty is subject to the installation and operating

instructions as specified in this Manual.

UNIQUE GUARANTEE

Precision engineering and the use of high quality materials

have enabled Hawk in South Africa to give a comprehensive

Guarantee to cover their products. A full one year's warranty

covers the workmanship and materials against defects.

Members: GM Pote (Managing), AHM Dockrat, M Mokawem

Manufactured by

w w w . h a w k p u m p s . c o . z a

Durban (031) 274-8555 Germiston (011) 822-4038

Page 2

extension lead, or too light a cable, results in a

voltage drop and this can lead to a burned out

motor. Never share a plug with other machines.

SINGLE PHASING

When three-phase power is being used, ensure

that all three phases are functioning. If the

supply "drops a phase" the motor will almost

certainly burn out. This can be caused by a

phase becoming disconnected in the motor, the

starter, the plug or the plug switch, or even by a

corroded switch.

CLEANING

It is important to keep equipment clean. Do not

clean the machines with the high pressure

water. The motors and starters are rated to IP54

standard of sealing. This means that the

components can be accidentally splashed with

water without harm, not blasted with high

pressure water jets.

PHYSICAL PRECAUTIONS

Machines which work at high pressure cause

severe damage to persons. Never indulge in

horseplay when operating high pressure

cleaners.

DRIVES

For direct drive applications with an electric

motor, it is advisable to use proper flexible

coupling. When using pulleys, make sure that

they are properly aligned and provide for

adequate safety protection.

it is advisable to use proper flexible coupling.

When using pulleys, make sure that they are

properly aligned and provide for adequate

safety protection.

MOTOR ROTATION

Motor rotation direction is irrelevant as Hawk

units can operate in either a clockwise or

anticlockwise rotation direction.

OPERATING INSTRUCTIONS

CHECKING AND MAINTENANCE

It is always easy to blame the machine for failing

to work. However, it is most usual that poor care

results in the failure. Regular checks on the

condition of equipment pays dividends.

PUMP SPECIFICATIONS

The pump must not exceed the rated speed and

pressure for the specific model used.

OIL

The pump must be installed horizontal to its

base for it to receive optimum lubrication.

Check the oil level frequently. The first oil

change must be carried out within the first 30

hrs. of working. Change the oil every 300

working hours, thereafter, or at least once a

year. It is advisable to use Hawk non-foaming

oil.

PRECAUTIONS AGAINST FREEZING

The machine should not be stored where there

is a risk of the water in the head freezing.

Water inlet filter. The water inlet filter must be

checked and cleaned daily in order to avoid

cl og gi ng. A c le an fi lt er as su re s g oo d

performance of the machine.

NOZZLE

Nozzles make the pressure, not the pump or the

pressure regulating valve. If the orifice is too

large, the total water delivered by the pump will

pass through at a low pressure. Do not clean a

blocked nozzle with wire or sharp metal objects.

There is a special stiff-bristle brush available for

this job.

LEAKS

Any leaks in the unloader, hose or gun will

cause a repetitive pulsing of the unloader. This

causes undue wear on all the components of

the machine, and will shorten their life.

WATER DELIVERY

Do not run the pump dry. This will cause the

packings to fail prematurely and will void your

warranty. Make certain that the inlet filter is

clean.

HEADER TANKS

If the unit has been fitted with a header tank, this

is to try to prevent the pump being starved of

water and also to allow by-pass water to keep

cool. A low level float-switch can be fitted to

guard against the water reaching a dangerous

low level in the event of an insufficient source.

This switch should never be allowed to control

the starter. It is only fitted as a safety device.

PLUMBING

The INLET piping to your pump must be sized

to the pump volume. The plumbing diameter

should be greater than the size of the port of the

pump. Use as few restrictions (elbow, tees,

reducers, etc.) as possible. Any joint in the inlet

plumbing must be tightly sealed with teflon tape

or similar product to avoid air leaks and

cavitation. There should be no kinks in the inlet

hose or signs of damage. If no header tank is

fitted, water can be supplied from the mains, or

can be sucked from a container.

If air is allowed to enter the pump, or the inlet

feed water is restricted, the pump will cavitate.

Most of the problems associated with positive

displacement pumps are caused by water

starvation or entrained air. Cavitation causes

valve plugs to burst.

The OUTLET plumbing must be suitable to

withstand the working pressure of the pump.

Undersized plumbing can result in low

discharge pressure.

The BY-PASS plumbing must also not be

restricted. It can be plumbed back into the

header tank, or fed back to the head of the pump

if the supply of water is from the mains.

POWER SUPPLY

If the power supply is too low, the starter

overload protector will trip. However, it is not

advisable to rely entirely on the overload

protector. Check the temperature of the motor

regularly during operation. If it feels too hot, get

the advise of a qualified electrician. Too long an

FAILURE TO COMPLY WITH ANY

OF THE ABOVE INSTRUCTIONS

AUTOMATICALLY VOIDS ANY

WARRANTY CONSIDERATION

1. CS-0101 Standard Chassis with Starter Plate

2. - Power Supply Cable with 3pin plug

3. 5H-0203.83 VBA Unloader for NST Pumps

4 5H-2423.04 Quick Coupler Nipple

5. 9W-PVP250-Y 250mm Wheel with Plastic Centre

6. 1-MEG1504 1/4 Meg 15-04 Nozzle

7. 5C-40.2190.00 R5 900mm Lance with Hand Grip

8. 5H-2404.11 Hawk Gunjet

9. 9HP-2W-6-10 10m of 2-wire HP hose

10. 9FB-125HB-8-8 Hose Barb for Suction Hose

11. 5C-28.0300.00 F5 Intake Strainer

12. 5H-NST1012C NST1012C Pump (Hollow shaft - direct)

13. ME-2-4-2.2FF 220V, 4 Pole, 2.2kW Foot/Flanged Motor

14. EA-LE1-D183U321 Dol Starter, 12-18A, 2,2kW, 230V

BREAKDOWN OF 8H-2-10-120

2601.40 Plunger Seals dia. 18 mm 1

2601.41

Complete Seals Packing Ø18 mm

2601.42

Plunger Ø18 mm

2600.12

Complete Valve

2608.26 Plunger oil Seals

2601.43

Complete Manifold

3100.42 Connecting Rod-Plunger Rod Assy 3

2608.26 Plunger oil Seals

2601.43

Complete Manifold

3- 5- 6

11- 12- 13

37- 38- 39- 40

3- 4- 5- 6- 7

43- 44- 45- 46

3- 4- 5- 6- 7- 8

9- 10- 11- 12

13- 14- 17- 18

0700.07

BREAKDOWN OF NST1012C PUMP

Page 3

0202.34

Crankcase 1

0001.05

Plunger oil seal

0601.81

"O" Ring Ø1.78x28.03

1201.12

Pressure ring dia. 18 mm

0002.08

"V" seal, dia. 18 mm

0300.50

Support ring dia. 18 mm

0300.21

Intermediate Ring Ø18 mm

0603.07

Copper washer G1/2

1601.20

Brass plug G1/2

*10

1602.47

Manifold housing

*11

0601.61

"O" Ring Ø1.78x15.60

*12

3604.60

Valve assembly

*13

0601.06

"O" Ring Ø2.62x18.72

*14

1601.36

Valve plug

1801.39

Manifold stud bolt M6x50

1401.12

Spring washer Ø6

*17

0603.06

Copper washer G3/8

*18

1601.17

Brass plug G3/8

1503.22

Valve seat

1202.00

Valve plate

0900.30

Valve spring

0604.07

Valve cage

1501.06

Snap Ring dia. 62 mm

Sight glass

0601.83

"O" Ring Ø3.53x55.56

1500.03

Snap Ring dia. 25 mm

0213.00

Ball Bearing

0006.61

Hollow shaft dia. 28 1

0206.04

Crankshaft Key

1600.14

Oil dip stick

0601.14

"O" Ring Ø1.78x14.00

1601.69

Brass plug

0200.02

Needle Roller Bearing

0001.18

Cranckshaft seal 1

1801.26

Screw M6x22

1400.02

Washer dia. 6,5 mm

0500.66

Motor ﬂange

1400.01

Washer dia. 8,5 mm

1802.06

Hexagonal Screw M8x25

*43

1802.27

Plunger Screw Stainlees Steel

*44

1408.13

Bonded Seal

*45

1200.38

Plunger

*46

1400.27

Copper spacer

0003.04

Plunger Rod

1502.04

Connecting rod pin

0100.08

Conneting Rod

1801.32

Conneting Rod Screw

0601.46

"O" Ring Ø 2.62x101.27

52 0203.64 Crankcase cover 1

Part available in kit only

Part also available in kit

Part No.Item Description Qty Part No.Item Description Qty

Part No.Item Description Qty

Kits

Part No. Pos. Components Qty

2616.11 Repair kit (Gunjet normal) 1

4 0601.44 1

5 0009.06 2

6 0601.43 1

8 1001.02 1

9 0003.13 1

10 1601.25 1

12 0601.25 1

13 1503.07 1

14 1504.02 1

15 0900.10 1

16 0900.25 1

17 0601.27 1

Pos. Part No. Description Qty

1 1804.01 Screw 6

2 1001.01 Black dot 1

3 1507.18 Left shell 1

4 ** Plunger guide o-ring 1

5 ** Teflon ring 2

6 ** Plunger rod o-ring 1

7 1506.00 Trigger pin 1

8 ** Plunger seat 1

9 ** Plunger rod 1

10 ** Plunger guide 1

11 0204.29 Body (sst) 1

12 ** Seat o-ring 1

13 ** Seat (normal) 1

14 ** Ball 1

15 ** Shutter spring 1

16 ** Seat spring 1

17 ** Springs plug o-ring 1

18 1601.11 Cap 1

19 1507.17 Right shell 1

20 1407.05 Inlet fitting 1

21 0603.09 Copper washer 1

22 1605.00 Pipe 1

23 0802.05 Lock-off lever 1

24 0802.04 Trigger 1

25 1506.01 Lock-off pin 1

** Only available in kit.

Kits

BREAKDOWN OF HAWK GUNJET

Page 4

BREAKDOWN OF

F5 STRAINER

5C-28.0300.00

1 Cap

2 Filter mesh

3 O-ring 2x38mm

4 Body 1/2Bsp/t FM

Page 5

BREAKDOWN OF VBA UNLOADER

Kits

SETTING UNLOADER VALVES

When setting unloaders, it must be carried out with the correctly

sized, new, nozzle in the gun.

The nozzle determines the maximum pressure that may be

obtained. If the nozzle is worn or too big to start with, the unloader

can be screwed right down without the correct pressure ever

being achieved. When it has been screwed too far down, however,

and the the gun is then closed, the pressure will go very high

before the unloader valve can dump. This will damage the pump

and probably even burn out the motor.

There are limiting sleeves available for fitting to the unloader

stem. They are for predetermined pressures and should be

fitted to prevent the over tightening of the knob.

It is important to check whether the gauge reads in bar or Mpa.

1Mpa = 10bar

The correct procedure for setting an unloader is:

· Fit a gauge to the unloader port or to a tee plumbed after the

unloader valve in the hose line.

· Unscrew the unloader knob until it is loose.

· Switch on the pump motor.

· Holding the gun open (with the correct new nozzle installed),

slowly screw down the unloader knob watching the gauge the

whole time. If the pressure ceases to rise before it has reached

the correct level, it means that the pump is not delivering the

correct volume or that the nozzle is worn or too large.

· When the correct pressure is reached, or the indicated

pressure stops rising, close the gun and observe the pressure

on the gauge. It should only have risen about 10 to 20 bar

between the gun-open and gun-closed situations . If the

differential between the open and closed gun pressures is

greater than 20 bar, back off the unloader knob until the

differential is correct.

· Check the amperage being drawn by the motor, with the gun

open. Make sure it does not exceed the motor manufacturer's

recommendation, usually stated on the motor label.

· Lock the nut down on the top of the knob. Repeatedly open

and close the gun to verify that the higher and lower pressures

have the 20bar maximum differential, and that the motor is still

drawing the correct amps.

Pressure

Adjusting

Knob

Inlet from

Pump

By-pass

is internal

Outlet

to Gun

Mountings

(to pump

head)

Pos Code Description Qty

1 1206.11 Stem 1

2 0009.18 Teflon Ring 1

3 0601.70 O-ring 2

4 1407.24 Connector 1

5 0601.62 O-ring 1

6 0009.19 Teflon Ring 1

7 0101.11 Guide bushing 1

8 0601.14 O-ring 1

9 4504.00 Ball Sub-assembly 1

10 1503.16 Seat 1

11 0601.41 O-ring 1

12 1408.02 Seal Washer 3/8 2

13 1800.04 Hollow Bolt 3/8 1

14 1800.07 Hollow Bolt 1/2 1

15 1408.03 Seal Washer 1/2 2

16 0204.83 Body Valve 1

17 1102.07 Poppet 1

18 0900.04 Spring 1

19 0601.19 O-ring 1

20 1407.25 Outlet Connector 1

21 1202.07 Plate 1

22 0900.31 Spring 1

23 1803.04 Set Screw 1

24 0302.09 Nut 1

25 0905.10 Brass Handle 1

Code Inc Pos Description Qty

2628.00 O-ring Repair Kit

2 0009.18 Teflon Ring 1

3 0601.70 O-ring 2

5 0601.62 O-ring 1

6 0009.19 Teflon Ring 1

8 0601.14 O-ring 1

11 0601.41 O-ring 1

19 0601.19 O-ring 1

2628.01 Outlet Kit

17 1102.07 Poppet 1

18 0900.04 Spring 1

19 0601.19 O-ring 1

2628.02 Stem Repair Kit

1 1206.11 Stem 1

9 4504.00 Ball Sub-assembly 1

10 1503.16 Seat 1

11 0601.41 O-ring 1

21 1202.07 Plate 1

22 0900.31 Spring 1

Spares

TROUBLE SHOOTING

1. When switched on, the motor will not start

2. The motor stops suddenly

Malfunction

Probable Cause

2. Cables or sockets of extension cords

are broken

1. The electric socket Is faulty

3. Any built-in thermo safety switch has

switched off the pump

4. The motor has burned out

2. The low-level float switch in the header

tank, if fitted, has cut out the starter.

1. The thermo safety switch has switched

off the pump, due to overheating.

2. Air is sucked In the connections or in the

water feed hose.

1. The Inlet filter Is clogged

3. Unloader valve Is blocked or worn.

4. Pump valves (suction and delivery)

clogged or worn.

6. Pressure seals worn

5. Nozzle is of Incorrect size or is worn.

7. The chemical injector primary nozzle is

too small or is blocked.

2. Dirt In the suction valve.

1. Air is being sucked into the pump

3. Pressure seals worn

2. Presence of water in oil in crankcase.

1. Pressure seals worn

3. If there is a large amount of water

3. No pressure.

4. The pressure varies

5. Water leaking from the pump and

pressure drops

6. Pump noisy

2. Valves dirty or worn.

1. Air is being sucked into the pump.

3. Crank bearings worn.

4. Water temperature is too high

2. Unloader leaks from adjuster stem/shaft

1. Unloader seals are worn

3. Plumbing between unloader and nozzle

leaking

2. Seal O-rings worn.

1. Packings worn.

1. Plug O-rings worn.

1. Oil seats worn.

2. Operator has sprayed the pump with

water.

1. Condensed humidity in the oil

7. Pump pulses when gun is closed.

8. Water leaking from the pump head

9. Water leaking from the valve plugs

10. Oil leakage

11. Oil is milky / Water in the oil

Change the oil. NOTE: Water cannot enter the crankcase from

the pump. There is a gap between the pump head and the

crankcase.

Check and replace.

Repair any leaks to hose and gun. There must be no leaks if the

unloader is to perform properly

Check and replace.

Reduce temperature to below 50°C.

Check and replace.

Check and / or replace.

Check hoses and suction connections.

Stop the machine. Replace pressure seals. Replace oil seals.

Change the oil.

Change the oil - humidity and water in the surrounding air often

causes this problem.

Replace

Check the valves and clean, or, if necessary, replace.

Check and / or replace.

Check that connections and locking rings are well tightened.

Check that the water feed hose is not leaking.

Check, clean or replace with the correct primary orifice

Replace.

Check the valves and clean, or, if necessary, replace.

Loosen and retighten adjustment knob or replace unloader

valve.

Check that connections and locking rings are well tightened.

Check that the water feed hose is not leaking.

Clean the Inlet filter.

Make sure the water supply is adequate. If this problem occurs

often, the switch will burn out, and there is no guarantee cover

offered by the switch manufacturer.

Check that mains voltage corresponds to the specifications.

Switch off the machine and let the motor cool for a few minutes.

Rewind or replace the motor.

Wait until the motor cools and switch on again. Make sure the

pressure is not so excessive as to cause a high current load.

Check cables. connections and terminal boards.

Check that there is power at the plug and check the fuses.

Remedy

Page 6

Hawk 8H-2-10-120 Operating

Brand: Hawk

Model: 8H-2-10-120

Type: Operating

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Hawk 8H-2-10-120 Operating

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