RKI Instruments GD-K11D - Manual (Page 24)

20 • Maintenance Model GD-K11D Operator’s Manual
4. Use the ZERO potentiometer to adjust the display reading to zero.
5. Press the MODE button.
The ZERO light turns off, and 3. appears on the display screen.
6. Press the MODE button for approximately 3 seconds to exit maintenance mode and
return to the normal screen (measuring mode).
7. Rotate the housing cover up to its original position, then tighten the thumbscrew at
the top of the housing to secure the cover to the housing.
Replacing the pump
1. Loosen the thumbscrew at the top of the housing.
2. Rotate the housing cover toward the bottom of the housing to gain access to the
interior of the Model GD-K11D.
3. Place the power switch in the OFF position.
4. Disconnect the pump connector from the socket on the amplifier circuit board. The
socket is marked PUMP and is to the right of the fuses.
5. Loosen the captive screw at the bottom of the pump cover, then rotate the cover
toward the top of the housing.
6. Remove the pump.
7. Place the replacement pump in the same position as the original pump.
8. Rotate the pump cover down to its original position, then secure the cover with the
captive screw.
9. Connect the pump connector to the socket marked PUMP on the amplifier circuit
board.
10. Place the power switch in the ON position.
11. Rotate the housing cover up to its normal position, then secure the cover to the
housing with the thumbscrew.
Replacing the fuses
1. Loosen the thumbscrew at the top of the housing.
2. Rotate the housing cover toward the bottom of the housing to gain access to the
interior of the Model GD-K11D.
3. Place the power switch in the OFF position.
4. Use a screwdriver to slightly push the fuse holder down, then rotate the holder to the
left.
5. Remove the fuse holder from the Model GD-K11D, then remove the fuse from the
holder.
6. Install the replacement fuse in the fuse holder, then insert the fuse holder into its
original position.
7. Use a screwdriver to slightly push the fuse holder down, then rotate the holder to the
right.
8. Place the power switch in the ON position.
9. Rotate the housing cover up to its normal position, then secure the cover to the
housing with the thumbscrew.