2
2. Equipment:
This equipment has been designed and manufactured for the high pressure
washing of machinery, buildings etc.
It should not be used for washing electrical equipment, people, animals and
surfaces that are loose and easily damaged.
This manual deals with the following variants of pressure washers,
EC DECLARATION OF CONFORMITY
Dual Pumps Ltd
Unit 8, Hudson Road
Saxby Road Ind. Est.
Melton Mowbray
Leicestershire LE13 1BS
Declares that this equipment conforms to the following directives,
2006/42/EC, 2000/14/EC, 2004/108/EEC
Tom Herridge
Technical Manager
1) Index
Page
2) Equipment ........................................................................................................ 2 - 3
3) Safety ................................................................................................................ 3 - 5
4) Main Features ................................................................................................... 6 - 8
5) Installation ..............................................................................................................9
6) Operation ..............................................................................................................10
7) Lance Details ........................................................................................................10
8) Maintenance ................................................................................................. 11 - 14
9) Fault Finding .........................................................................................................15
10) Storage ...............................................................................................................15
11) Disposal ..............................................................................................................16
12) Warranty ...................................................................................................... 16 - 17
Model No
Drive
Flow
Lpm
Max
Pressure
Weight
Kg
Dimensions
L x W x H
*SPL
LwA dB
*GSPL
LwA dB
Group
**TT41200DHE
Diesel 23 hp
41
200 bar
200
1200x700x800
113
116
3-D
**TT30200DHE
Diesel 23 hp
30
200 bar
200
1200x700x800
113
116
3-D
**TT29250DHE
Diesel 23 hp
29
250 bar
200
1200x700x800
113
116
3-D
TT21350DHE
Diesel 23 hp
21
350 bar
200
1200x700x800
113
116
3-D
TT18400DHE
Diesel 23 hp
18
400 bar
200
1200x700x800
113
116
3-D
TT15500DHE
Diesel 23 hp
15
500 bar
200
1200x700x800
113
116
3-D
*
Diesel 23 hp
200
1200x700x800
113
116
3-D
*SPL = Sound Power Level on equipment representative for this type.
*GSPL = Guaranteed Sound Power Level for this equipment.
* Special Build
** Twin outlet versions
15
Symptom
Possible Cause
Remedy
Pump running normally
but pressure low.
Pressure Regulator valve
Pump sucking air.
Check and adjust
Check water supply and
possible air ingress.
Nozzle badly worn
Check and/or replace
Worn piston packing
Seek professional advice
Fluctuating pressure
Blocked water filter
Check filter, clean or
replace if necessary.
Pump sucking air
Check integrity of suction
hose and connections.
Pressure low after a long
period of normal use.
Nozzle badly worn
Check and/or replace
Pump noisy.
Pump sucking air
Check integrity of suction
hose and connections.
Excessive temperature of
Reduce temperature to
liquid in pump
below 60ºC, do not allow
pump to idle for long periods.
Blocked water filter
Check filter, clean or
replace if necessary.
Worn bearing or valves
Seek professional advice
Presence of water in oil.
Ingress through breathers
Replace oil, do not wash
engine or pump
Worn oil seals
Seek professional advice
Water dripping from under pump.
Worn piston packing
Seek professional advice
Oil dripping from
pump/gearbox/engine.
Worn oil seal
Seek professional advice
Excessive vibration in
Water supply low
Check adequacy of water
lance/delivery line.
supply. Ensure suction
filter is below water level.
Ingress of air into suction
Check integrity of suction
line
hose and connections.
Irregular functioning of
Seek professional advice
valves
Blocked water filter
Check filter, clean or
replace if necessary.
9. Fault Finding
10. Storage
Disconnect pressure hose and lance, draining water from the hose.
Disconnect water feed hose, draining water from the hose.
Wash out detergent hose with clean water, draining water from the hose.
Turn over the engine to expel water from pump.
Ensure the equipment is clean and dry before storage.
The equipment should be stored in a dry and frost proof place.
