Sharp R-15AT Original Instruction page 12

To change the time constant for double quantity
The time constant for double quantity is preset 1.7 times the single quantity cooking time, but you can alter this
constant to suit your needs.
Example: If you want to change the time constant to 1.67 in memory 1.
Step
Procedure
1
Press the SET key twice within 2 sec-
onds.
2
Press the DOUBLE QUANTITY key.
3
Press the NUMBER key
4
Press the SELECT TIME key.
5
Set the time constant (1.67).
6
Press the SET key twice to complete
the setting.
Note: 1. In case you want to change the time constant it must be set for each key separately.
2. The time constant can be set from 0.00 to 9.99.
3. At step 1 the audible signal will only sound on the second press of the SET key
Key Order
.
8
Display
X 2
NO. will flash on and off.
X 2
NO.
NO. X2
NO. X2
X2
X2
.