Nilfisk-ALTO MC 3C User manual

MC 3C - MC 4M
SERVICE MANUAL

SM MC 3C_ MC 4M Ver.1.0_March 2015
Preface
This service manual contains detailed description of the main repair work on the cold high
pressure washers MC 3C & MC 4M
Repair work requires a suitable working place with the necessary water and power supply.
If operating errors are evident, draw the customers attention to the ”Operators Manual”.
A fault in the high pressure washer can have several causes as described in the section on
troubleshooting.
Refer to the illustrated ”Spare Parts Catalogue” during repairs. It shows the assembly position
and the sequence in which the individual components should be assembled.
See ”Technical Service Bulletin” (TSB) sheets. They include information on technical
modifications that have been made after this repair manual was made.
”Technical Service Bulletin” sheets are also valid as a supplement to the spare parts list until
publication of a new edition.
”Service Manual” and ”Technical Service Bulletin” should be available at the workshop, where
the repairs are carried out.
It is not permitted to give them to third parties.
Use original Nilfisk-ALTO spare parts only.

A.
B.
C.
D.
E.
F.
G.
H.
I. Special tools 69
Wiring diagrams 66-68
Adjustment / Test 65-65
Service / Repair 42-64
Troubleshooting 40-41
Function 38-39
Construction 34-37
Technical data 5-33
Safety instructions 4

A
SM MC 3C_ MC 4M Ver.1.0_March 2015
Safety instructions
4
For your own safety
ESD measures
(electrostatic discharge)
Observe valid safety regulations
for electrical equipment. In
particular, observe the following
regulations:
IEC 60335-2-79
EN 60335-2-79
Additionally:
Also see national regulations
Before using the cleaner, always
read the ”Operators Manual” and
keep it readily available.
Only allow the high pressure
cleaner to be used by persons
who have been trained in its use
and who have been explicitly aut-
horized to use it.
Repair work should be carried
out by persons instructed in
electrical installations or by
trained electricians only.
Take the following ESD precautions before carrying out any
repairs to the electronics:
 Touch the earth conductor before repairing the cleaner
( to discharge electrostatic charge from your body ).
 Wear wrist band if necassary.
 Use a conductive floor covering or a conductive table cover.

B
Technical data
SM MC 3C_ MC 4M Ver.1.0_March 2015 5
Parentitemno:Descripon:
107146377MC3C‐130/660220/1/60/15EXPT
Service data Unit Value
Model MC 3C-130/660
Item no. 107146377
TECHNICAL DATA
PUMP:
Pressure pump head @ Qiec bar 132
Pressure pump outlet @ Qiec bar 130
Pressure gun outlet @ Qiec bar 111
Retaining pressure* bar 164
Flow. Qiec l/min 9,2
Suction height dry m 0,5
Suction height primed m 1
Pump type NA3
Number of pistons 3
Piston type Stainless Steel
Stroke mm 0
Pump oil type SAE 80W-90 API GL-5
Pump oil amount L 0,42
ELECTRIC:
Electric data
Highvoltage (HV) test voltage kV 1,5
HV Insulation resistance 1
Earth circuit resistance 0,2
Pump revolutions 3460
Electrical diagram no. 0
UNIT DATA:
Nozzle size, water NT 0400
Max. Inlet temp. (primed) °C 25 (50 max.1 hour)
Max. Inlet temp. (suction) °C 25 (50 max.1 hour)
Max. Inlet temp. (pressure fed) °C 60 (>40°C max. 1h)
Gun Type ERGO 2000 STANDARD GUN W/O HOSE SWIVEL
Primary Lance Type FLEXOPOWER PLUS 990 BEND W/O NOZZLE BLUE
Secondary Lance Type None
Hose DN6 x 10m
Guarantied sound power 91
Impactfactor calculated 2,8
Vibration ISO 5349, lance 1 / lance 2 <1,5; +/-1
Protection Class IPX5
Machine incl. standard acc. kg 36
Size - Machine alone L x W x H mm 382x382x1017

B
Technical data
SM MC 3C_ MC 4M Ver.1.0_March 2015 6
Parentitemno:Descripon:
107146373MC3C‐140/570230/1/50/13UK
Service data Unit Value
Model MC 3C-140/570
Item no. 107146373
TECHNICAL DATA
PUMP:
Pressure pump head @ Qiec bar 126
Pressure pump outlet @ Qiec bar 124
Pressure gun outlet @ Qiec bar 123
Retaining pressure* bar 172
Flow. Qiec l/min 8,4
Suction height dry m 0,5
Suction height primed m 1
Pump type NA3
Number of pistons 3
Piston type Stainless Steel
Stroke mm 0
Pump oil type SAE 80W-90 API GL-5
Pump oil amount L 0,42
ELECTRIC:
Electric data
Highvoltage (HV) test voltage kV 1,5
HV Insulation resistance 1
Earth circuit resistance 0,2
Pump revolutions 2800
Electrical diagram no. 0
UNIT DATA:
Nozzle size, water 25034
Max. Inlet temp. (primed) °C 25 (50 max.1 hour)
Max. Inlet temp. (suction) °C 25 (50 max.1 hour)
Max. Inlet temp. (pressure fed) °C 60 (>40°C max. 1h)
Gun Type ERGO 2000 STANDARD GUN W/O HOSE SWIVEL
Primary Lance Type UNIVERSAL PLUS LANCE 990 BEND
Secondary Lance Type None
Hose DN6 x 10m
Guarantied sound power 91
Impactfactor calculated 2,5
Vibration ISO 5349, lance 1 / lance 2 <1,5; +/-1
Protection Class IPX5
Machine incl. standard acc. kg 36
Size - Machine alone L x W x H mm 382x382x1017

B
Technical data
SM MC 3C_ MC 4M Ver.1.0_March 2015 7
Parentitemno:Descripon:
107146375MC3C‐140/660230/1/50/16EU
Service data Unit Value
Model MC 3C-140/660
Item no. 107146375
TECHNICAL DATA
PUMP:
Pressure pump head @ Qiec bar 132
Pressure pump outlet @ Qiec bar 131
Pressure gun outlet @ Qiec bar 129
Retaining pressure* bar 164
Flow. Qiec l/min 9,3
Suction height dry m 0,5
Suction height primed m 1
Pump type NA3
Number of pistons 3
Piston type Stainless Steel
Stroke mm 0
Pump oil type SAE 80W-90 API GL-5
Pump oil amount L 0,42
ELECTRIC:
Electric data
Highvoltage (HV) test voltage kV 1,5
HV Insulation resistance 1
Earth circuit resistance 0,2
Pump revolutions 2800
Electrical diagram no. 0
UNIT DATA:
Nozzle size, water NT 0370
Max. Inlet temp. (primed) °C 25 (50 max.1 hour)
Max. Inlet temp. (suction) °C 25 (50 max.1 hour)
Max. Inlet temp. (pressure fed) °C 60 (>40°C max. 1h)
Gun Type ERGO 2000 STANDARD GUN W/O HOSE SWIVEL
Primary Lance Type UNIVERSAL PLUS LANCE 990 BEND
Secondary Lance Type None
Hose DN6 x 10m
Guarantied sound power 91
Impactfactor calculated 2,9
Vibration ISO 5349, lance 1 / lance 2 <1,5; +/-1
Protection Class IPX5
Machine incl. standard acc. kg 36
Size - Machine alone L x W x H mm 382x382x1017

B
Technical data
SM MC 3C_ MC 4M Ver.1.0_March 2015 8
Parentitemno:Descripon:
107146371MC3C‐150/570230/1/50/13XTUK
Service data Unit Value
Model MC 3C-150/570 XT
Item no. 107146371
TECHNICAL DATA
PUMP:
Pressure pump head @ Qiec bar 129
Pressure pump outlet @ Qiec bar 126
Pressure gun outlet @ Qiec bar 123
Retaining pressure* bar 172
Flow. Qiec l/min 8,4
Suction height dry m 0,5
Suction height primed m 1
Pump type NA3
Number of pistons 3
Piston type Stainless Steel
Stroke mm 0
Pump oil type SAE 80W-90 API GL-5
Pump oil amount L 0,42
ELECTRIC:
Electric data
Highvoltage (HV) test voltage kV 1,5
HV Insulation resistance 1
Earth circuit resistance 0,2
Pump revolutions 2800
Electrical diagram no. 0
UNIT DATA:
Nozzle size, water NT 0340
Max. Inlet temp. (primed) °C 25 (50 max.1 hour)
Max. Inlet temp. (suction) °C 25 (50 max.1 hour)
Max. Inlet temp. (pressure fed) °C 60 (>40°C max. 1h)
Gun Type ERGO 2000 STANDARD GUN W/O HOSE SWIVEL
Primary Lance Type LANCE FOR 4-IN-1 880 BEND
Secondary Lance Type None
Hose DN6X15M
Guarantied sound power 91
Impactfactor calculated 2,6
Vibration ISO 5349, lance 1 / lance 2 <1,5; +/-1
Protection Class IPX5
Machine incl. standard acc. kg 38
Size - Machine alone L x W x H mm 382x382x1017

B
Technical data
SM MC 3C_ MC 4M Ver.1.0_March 2015 9
Parentitemno:Descripon:
107146376MC3C‐150/660230/1/50/16EU
Service data Unit Value
Model MC 3C-150/660
Item no. 107146376
TECHNICAL DATA
PUMP:
Pressure pump head @ Qiec bar 132
Pressure pump outlet @ Qiec bar 130
Pressure gun outlet @ Qiec bar 129
Retaining pressure* bar 164
Flow. Qiec l/min 9,3
Suction height dry m 0,5
Suction height primed m 1
Pump type NA3
Number of pistons 3
Piston type Stainless Steel
Stroke mm 0
Pump oil type SAE 80W-90 API GL-5
Pump oil amount L 0,42
ELECTRIC:
Electric data
Highvoltage (HV) test voltage kV 1,5
HV Insulation resistance 1
Earth circuit resistance 0,2
Pump revolutions 2800
Electrical diagram no. 0
UNIT DATA:
Nozzle size, water NT 0370
Max. Inlet temp. (primed) °C 25 (50 max.1 hour)
Max. Inlet temp. (suction) °C 25 (50 max.1 hour)
Max. Inlet temp. (pressure fed) °C 60 (>40°C max. 1h)
Gun Type ERGO 2000 STANDARD GUN W/O HOSE SWIVEL
Primary Lance Type FLEXOPOWER PLUS 990 BEND W/O NOZZLE BLUE
Secondary Lance Type None
Hose DN6 x 10m
Guarantied sound power 91
Impactfactor calculated 3
Vibration ISO 5349, lance 1 / lance 2 <1,5; +/-1
Protection Class IPX5
Machine incl. standard acc. kg 36
Size - Machine alone L x W x H mm 382x382x1017

B
Technical data
SM MC 3C_ MC 4M Ver.1.0_March 2015 10
Parentitemno:Descripon:
107146380MC3C‐150/660230/1/50/16XTEU
Service data Unit Value
Model MC 3C-150/660 XT
Item no. 107146380
TECHNICAL DATA
PUMP:
Pressure pump head @ Qiec bar 134
Pressure pump outlet @ Qiec bar 132
Pressure gun outlet @ Qiec bar 127
Retaining pressure* bar 164
Flow. Qiec l/min 9,2
Suction height dry m 0,5
Suction height primed m 1
Pump type NA3
Number of pistons 3
Piston type Stainless Steel
Stroke mm 0
Pump oil type SAE 80W-90 API GL-5
Pump oil amount L 0,42
ELECTRIC:
Electric data
Highvoltage (HV) test voltage kV 1,5
HV Insulation resistance 1
Earth circuit resistance 0,2
Pump revolutions 2800
Electrical diagram no. 0
UNIT DATA:
Nozzle size, water NT 0370
Max. Inlet temp. (primed) °C 25 (50 max.1 hour)
Max. Inlet temp. (suction) °C 25 (50 max.1 hour)
Max. Inlet temp. (pressure fed) °C 60 (>40°C max. 1h)
Gun Type ERGO 2000 STANDARD GUN W/O HOSE SWIVEL
Primary Lance Type LANCE FOR 4-IN-1 880 BEND
Secondary Lance Type None
Hose DN6X15M
Guarantied sound power 91
Impactfactor calculated 3
Vibration ISO 5349, lance 1 / lance 2 <1,5; +/-1
Protection Class IPX5
Machine incl. standard acc. kg 38
Size - Machine alone L x W x H mm 382x382x1017