Chapter 4
Visco
Twin_002 EN
Page 4-7
4.10
Quench media
The manufacturer uses only quench fluids suitable for food products (e.g. distilled water). Some
usable quench media are being shown below. Change these quench media at regular intervals.
Do not use aggressive quench fluids.
Glycerine/water mix
This mixture is used in different concentrations. Glycerine does not boil until 290 °C and
decomposes in the process. The water vaporises in continuous operation and has to be regularly
refilled particularly at higher temperatures of up to 150°C. Suitable for foodstuffs.
Glycol/water mix
This is also used in various concentrations. Glycol does not boil until 190°C. The water vaporises in
continuous operation and has to be regularly refilled particularly at higher temperatures of up to
150°C. Suitable for foodstuffs.
Distilled water
Distilled water is a poor lubricant but cools very well. The water boils at 90-100 °C. The water
vaporises in continuous operation and has to be regularly refilled particularly at higher temperatures
of up to 80°C. Suitable for foodstuffs.
The following rules have to be kept when using water as a quench fluid:
Solid particles max. 10 mg/l
Particle size max. 50
µ
m
Permanganate value max. 30 (humus-free)
Iron content max. 1 mg/l
Water hardness max. 10 ° of German hardness (dH)
Critical particle size 2-5
µ
m
Do not use any de-ionized water
Critical particles of the above-mentioned size of 2 – 5
µ
m can accumulate between the sliding
surfaces resulting in increased wear.
4.11
Quench connections
Pump type
ttypetypep
a
b
A1
A2
E1
E2
104
37°
12,5 mm
G1/4“
G1/4“
G1/4“
G1/4“
130
42°
14,4 mm
G1/4“
G1/4“
G1/4“
G1/4“
Inflow
Inflow
Outflow
Outflow
Fig. 4a
Manual ViscoTwin 104-xx 3A
