Rupes CK31, Start-Up, Operating And Maintenance Instructions

Foam humidity calibration:

- The cleaning foam is obtained by mixing compressed air into the product. The ma-

chine regulates the inlet air pressure, in order to vary the type of foam generated; 

- Several tests demonstrate that optimal pressure for machine operations is approxi-

mately 3 bar when spraying (with brush valve pressed), that corresponds to appro-
ximately 4 bar without spraying (with brush valve not pressed).

Pressure lower than 3 bar may produce a watery foam, over 3 bar may produce dry

foam. If for any reason you machine's pressure adjustments vary they can be reset
by simply rotating the corresponding knob (19) clockwise to increase pressure, co-
unter-clockwise to decrease pressure. Make a few trial runs until the  3 bar condition
during spraying returns.
Pull the knob before turning and push to lock after adjustments.

Warning!

- If the machine is used as a liquid vacuum, check the level of water in the upper tank

(1), to avoid liquids from entering the vacuum motor;

- if the detergent used produces little foam, or when washing a carpet that has been

previously cleaned with shampoo, pour a small amount of non-foam liquid in the lo-
wer tank (2). Foam, if introduced in the motor, may damage it in time.

MAINTENANCE CK31 - CK31F - CK31FC

The manufacturer or an authorised representative must carry out a technical operating
inspection of the machine controls and check for any damage to the machine's filtering
system at least once a year. 

RUPES

Spa

is not liable for any direct or

indirect damages due to failure to comply with the instructions provided in this
manual.

Ordinary maintenance (by the user)

1. After use, before storing the machine, drain all water from both tanks. Pour some

clean water in the lower tank (2), only turn on the water pump using the switch (5),
and hold down the brush lever (13). The purpose of this operation is to clean the in-
side of the pump, quick couplings and nozzles.  

2. After use store the machine in a cool dry room with the lid (15) open to prevent tank

humidity from condensing within the motor, damaging it. Damages caused by hu-
midity that condenses in the motor (like damages caused by foam vacuumed in the
motor) is not covered by warranty.

3. Periodically clean (at least every 2 months) the water filter (11), removing it from the

machine and washing it under running water.

4. Routinely check and clean the motor (16) positioned between the two tanks.
5. Remove calcium that tends to deposit in the hydraulic circuit by pouring calcium re-

moval products in the lower tanks and leaving them for several hours to work. Use
the same products used for dishwashers. Drain and rinse. This operation is required
every 6-8 months.

6. Periodically drain (every 2-3 months) the air tank from condensate that may origi-

nate during the normal working. To do this, unscrew the circular cover located be-
low the machine, locked with 2 screws, and unscrew for few loops the condensate
drain cap, without removing it completely, through the hole which is normally closed
by the circular cover. Screw the cap and the circular cover again.

ATTENTION:

This operation must be done with the compressor completely empty

and with the machine switched off.

Extraordinary maintenance (by the authorised service center)

1. Excessive motor and pump brush wear may cause damages that are not covered by

warranty. Brushes must be checked about every 500 hours.

2. Periodically check power cord and plug conditions; replace if damaged or worn.
3. Compressor maintenance

PARTS OF THE TOOL

220/240 Vac - 50/60 Hz

1500 W

7 A

3000 mm/H2O

38 Kg

cm 32 x 55 x h 87

70 dB (A)

14 l

14 l

3000 l/min.

a vibrazione

70 W

4 bar 

1,5 l/min

100 mm

350 W

TECHNICAL SPECIFICATIONS

CK31F

CK31FC

OPERATING VOLTAGE

ABSORBED POWER

ABSORBED CURRENT

DEPRESSION

WEIGHT

DIMENSIONS

NOISE LEVEL

COLLECTION TANK CAPACITY

SOLUTION TANK CAPACITY

MAX AIR CAPACITY

PUMP WITH BY-PASS

POWER

MAX PRESSURE

MAX CAPACITY

CLEANING WIDTH

COMPRESSOR

220/240 Vac - 50/60 Hz

1500 W

7 A

3000 mm/H2O

20 Kg

cm 30 x 42 x h 66,5

70 dB (A)

14 l

14 l

3000 l/min.

vibration

70 W

4 bar 

1,5 l/min

100 mm

-

1 - upper tank
2 - lower tank
3 - vacuum motor
4 - Loading inlet
5 - pump switch
6 - motor switch
7 - pump outlet quick coupling
8 - vacuum inlet
9 - power cord

10 - closing hook
11 - water pump+filter
12 - nozzle
13 - foam brush 

14 - sleeve quick coupling
15 - lid
16 - motor filter
17 - quick coupling sleeve outlet
18 - pressure gauge
19 - pressure regulator
20 - pneumatic circuit supply tube 
21 - quick coupling compressed air inlet
(CK31F)
22 - cord winder
23 - sticker
24 - technical specifications label
25 - Air compressor and the compressed air

tank

OPERATING INSTRUCTIONS

a ) Lift the upper tank (1), after having freed it by opening the side hooks (10).
b ) Pour cold or room temperature water in the lower tank (2) through the load inlet

(4), adding one part SUPERFOAM  for four parts water (no more than 2 litres of
product per 8 litres water is recommended).

c ) Fasten the upper tank to the lower one.
d ) Insert the pneumatic circuit supply tube (20) in the pump outlet quick

coupling (7).  

e ) Check that the sleeve outlet quick coupling valve (17) is closed. Insert the sleeve

quick coupling (14) and open the valve (17).

f ) nsert one end of the sleeve in the machine inlet (8).
g ) Connect the nozzle (12) and the brush (13) with the sleeve quick couplings (14).
h ) Plug the power cord (9) into an electrical socket observing the prescribed safety

regulations.

i)

Insert the pneumatic supply in the quick coupling (21) (CK31F)

l)  Switch on the air compressor, putting its switch in the position “I”.
m) Adjust the pressure gauge (18) to 3,5 bar using the regulator (19)
n) Turn on the water pump using the switch (5). The machine is now ready to pro-

duce foam.

o) Turn on the vacuum motor using the switch (6) to vacuum the foam.

MACHINE USE

- Press the brush lever (12) and evenly distribute the product on the surface to be clea-

ned, keeping the nozzle 20-30 cm away from the surface; ideal foam thickness
is approximately 4-5 mm; 

- Let the detergent foam work for 20-30 seconds. For persistent stains, use the brush;
- vacuum the foam. Avoid suddenly vacuuming large quantities of foam that could be

vacuumed into the vacuum motor damaging it;

- always test the product in an area where any damages will not be visible;
- spray a sufficient quantity of foam to clean the surface remembering that the

active foam layer is the one closest to the surface, further layers of foam do not im-
prove results. If too mush foam is sprayed in too small an area, spread excess foam
in a thin layer.

Warning!

- Foam must be sprayed first and then vacuumed after  letting it work against dirt for

a suitable period of time. Do not spray foam and vacuum simultaneously as illustra-
ted on the sticker on the nozzle (23);

- in certain cases an anti-foam product may be opportune, to be poured in the collec-

tion tank to compact vacuumed foam preventing it from entering the motor.

Washing method:

- Ideally divide the surface in several parallel strips and proceed from right to left moving

backwards over the strips for a segment equal to slightly more than half the length;

- use a pace that corresponds to the level of dirt. Reverse working direction and treat

the remaining part similarly;

- let foam work longer for persistent stains.

CK31F - CK31FC