Anticipated Failurs And Precautions; Breakdown Of Non-Return Valves For Air And Water; Residual Risk; Damaged Unit - Nilfisk-Advance Hybrid 7 BF4 Directions For Use Manual

4.5. Anticipated failurs and precautions

4.5.1. Breakdown of non-return valves for air and
water:
• Close air and water valves when not in use.
• Examine air and water non-return valves once a
year by authorized personnel.

4.6. Residual risk

4.6.1. Damaged unit:

• Do not use if isolation valves cannot be operated
or required operation cannot be selected.
• Never use the unit if it has been dislodged from
its original place of mounting.

4.6.2. Repair of unit:

• Do not attempt to repair a unit by yourself. Always
contact an authorized service company. Refer to
the back of the manual for service address.
• Block and mark any defect unit in order to avoid
unintended use.
• For safety reasons only use approved and origi-
nal spare parts.
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