Manual operation
38
7.3.3.
Setting the pump pressure stage
The pressure of the circulation pump is adjustable in five grades.
After setting, the VFD-Info-Display indicates the corresponding
value.
Setp.: 120.00°C
Overt.:130.00°C
Subtmp:110.00°C
>St.Pump: 4
>St.Pump:
Setting the pump pressure stage
Setting in line 4.
The value previously set appears on the DIALOG-DISPLAY
(LCD).
A flashing segment indicates that a value needs to be
entered.
Use the keypad to enter the new value
(example: 4).
Press enter
to store the selected value.
Note:
The mechanical rotation of the circulation pump produces heat that is
radiated into the bath liquid. The lowest working temperature may thus only
be reached if the pump pressure is set to grade 1.
7.4. Setting the safety temperature (with shutdown function)
L
Check the safety installations at least twice a year! See page 15.
TANK 150
RES 100
°C
10
30
60
130
180
220
°C
0
40
80
160
240
320
ALARM
CODE 14
ALARM!
IntAct: xx.xx°C
ExtAct: --.--°C
Temp/level alarm
This safety feature functions independent of the regulator circuit.
When the temperature of the bath liquid has reached the safety
temperature, a complete shutdown of the heater and pump is
effected.
Safety temperature in the heat exchanger >TANK<
(excess temperature protection)
•
Press the key
to indicate the safety temperature value in
line 2 >TANK< on the VFD-Info-Display and using a screwdriver
simultaneously turn the setting screw to the desired value
(example: 150 °C).
Setting range:
0 °C to 320 °C
in 2 °C steps
The alarm is indicated by optical and audible signals (continuous
tone).
The error messages opposite appear on the DIALOG-DISPLAY
(LCD) and VFD-Info-Display.
Summary of Contents for Presto Plus LH 47
Page 20: ...Operating controls and functional elements 20 Rear...
Page 41: ...41...
