Hach 5410001, Руководство пользователя

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8.11 Replace the fuse
D A N G E R
Electrocution hazard. Remove power from the instrument before doing maintenance or
service activities.
D A N G E R
Fire hazard. Use the same type and current rating to replace fuses.
Remove the two fuses (F1 and F2) and replace them with two new fuses with the same
specifications, T, 1.25 A, 250 V. The same fuse rating is used for the 115 V and for the 230 V
operation. Refer to
Figure 10 on page 14.
Section 9 Troubleshooting
Problem Possible cause Solution
The SOFT LED light is not on
and the pump motor does not
operate. No power
• Make sure that the power switch is
set to on.
• Connect the power cord.
• Replace the fuses if necessary.
The SOFT LED light is not on
and the pump motor does
operate. Problem with the power
supply Replace the main circuit board.
Contact technical support.
The SOFT LED light is on but
the pump motor does not
operate. Operation power is low Make sure that the line voltage is
within specification.
Voltage selector setting is
not correct Set the line voltage selector switch to
the correct voltage.
Motor cable is not
connected Connect the motor cable connection.
Motor does not operate Replace the motor.
The reading is continually high.
The HARD LED is on.
• No stir bar
• LED is not connected
• No sample flow
• Out of reagents
Refer to Troubleshooting for a hard
reading on page 22. If the problem
continues, cycle power to the
instrument, examine all power
connections and fuses, replace the
circuit board or contact technical
support.
English 21