Ricoh Da-P1, Field Service Manual

Page: 293 / 452

• If the Sleep Mode timer is all set to the maximum value, the machine will not begin saving energy
until 60 minutes has expired after the last job. This means that after the customer has finished using
the machine for the day, energy will be consumed that could otherwise be saved.
• If you change the settings, the energy consumed can be measured using SP8-941, as explained
below.
Energy Save Effectiveness
SP 8-941 (Machine Status) keeps a record of the amount of time that the machine spends in each mode.
• SP8-941-001: Operating mode
• SP8-941-002: Standby mode
• SP8-941-003: Panel off mode (Not used in this model)
• SP8-941-004: Sleep mode (Fusing off mode)
• SP8-941-005: Off mode
With this data, and the power consumption values from the specifications, we can estimate the amount
of energy that is used by the machine.
This should only be used as a reference value, because the power consumption specifications are
measured in a controlled environment with a constant power supply.
To get an exact measurement at the customers site, a watt meter must be used to measure the actual
energy consumed.
To use SP8-941 to calculate the energy consumed:
• At the start of the measurement period, read the values of SP8-941-001 to 005.
• At the end of the measurement period, read the values of SP8-941-001 to 005 again.
• Find the amount of time spent in each mode (subtract the earlier measurement from the later
measurement).
• Multiply this by the power consumption spec for each mode.
• Convert the result to kWh (kilowatt hours)
Here is an example calculation.
Machine
Date
Power
Consumption
(W): Data: a SP8941:
Machine
Status Start Time:
(min.) Data:
b End Time:
(min.) Data:
c
Time
Differences
(Data:b -
Data: c)
(min.) Data:
d
Power
Consumptio
n (Data:a x
Data:d)
(Wmin.)
Data: e
Energy Save
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