Shimano GRX RX 815 Series Dealer's Manual page 20

TO ENSURE SAFETY
SM-BCR2: Battery charger/PC linkage device for SM-BTR2/BT-DN110/BT-DN110-A
• Connect the PC linkage device directly to the USB port on a PC, without using an
intermediate device such as a USB hub.
• Do not ride the bicycle while the PC linkage device and cable are still connected to it.
• Do not connect two or more of the same units to the same connection point. If this is not
done, the units may not operate correctly.
• Do not connect or disconnect the units again while unit recognition is in progress or after
recognition is complete. If this is not done, the units may not operate correctly.
Check the procedures which are given in the user's manual for the E-TUBE PROJECT when
connecting and disconnecting units.
• The tightness of the PC link cable will tend to drop after repeated connections and
disconnections. If this happens, replace the cable.
• Do not connect two or more PC linkage devices at the same time. If two or more PC
linkage device units are connected, they will not operate correctly. In addition, the PC
may need to be restarted if operating errors occur.
• PC linkage devices cannot be used while the battery charger is connected.
„ Rear derailleur
• If gear shifting operations do not feel smooth, wash the derailleur and lubricate all
moving parts.
• If the chain keeps skipping, ask the place of purchase to replace the gears and the chain.
• If there is a large gap in the pulleys which causes a lot of noise, ask the place of purchase
to replace the pulleys.
• The gears should be periodically washed with a neutral detergent. In addition, cleaning
the chain with neutral detergent and lubricating it can be an effective way of extending
the life of the gears and the chain.
• If looseness in the links is so great that gear shifting adjustments cannot be made,
replace the derailleur.
„ Hydraulic disc brake
• When the bicycle wheel has been removed, it is recommended that pad spacers are
installed. Do not depress the brake lever while the wheel is removed. If the brake lever is
depressed without the pad spacers installed, the pistons will protrude further than
normal. If that happens, consult the place of purchase.
• Use soapy water and a dry cloth when cleaning and carrying out maintenance of the
brake system. Do not use commercially available brake cleaners or silencing agents, as
they can cause damage to parts such as seals.
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