KRAL DL3 Series, Operating Instructions Manual, Page: 48 / 60

15 Accessories
15.2 Heating
Fluid heating system
Required heating-up period for temperature differences of 20 °C or 50 °C at liquid temperature of
180 °C and a pressure of the water of 15 bar:
Series Steam amount Heating-up period [min] at a temperature difference of
[kg/h] 20 °C 50 °C
DS1 5 30 100
DS3, DS4 5 40 120
Tab. 19: Heating-up period for fluid heating system
15.2.5 Storing heating elements
1. Store the heating element in an absolutely dry room or in hermetically sealed plastic bags.
2. If the heating element has absorbed humidity, dry it for eight hours in a drying furnace at 180 °C.
15.2.6 Commissioning the electrical heating system
DANGER
Risk of injury through emitted pumped liquid.
The pump housing may burst through heat expansion of the pumped liquid.
► Open all the valves during the heating process.
1. Switch on the electric heating system.
2. Take the required heating-up periods into account Ä Accessories, Page 46.
15.2.7 Commissioning the fluid heating system
DANGER
Risk of injury through emitted pumped liquid.
The pump housing may burst through heat expansion of the pumped liquid.
► Open all the valves during the heating process.
1. Take the required heating-up periods into account Ä Accessories, Page 46.
2. When setting the pressure and temperature of the heating fluid take the permissible operating
limits of the pump into account Ä Technical data, Page 8.
48 OID 06en-GB Edition 2019-11 Operating instructions