A Semi-Flush Mount is a type of Lighting Fixture that is installed on the
ceiling and hangs down slightly, but not as far as a Pendant Light. It
is a popular choice for rooms with low ceilings, as it provides ample
Lighting Product without taking up too much vertical space. Semi-Flush Mount Lighting come
in a variety of styles and designs, from modern and sleek to more
traditional and ornate. Semi-Flush Light are typically easy to install and can be
used in a variety of settings, including bedrooms, living rooms, and
kitchens.
Compared with Flush Mount lamps, there are no special restrictions on the design of Semi-flush Mount due to a certain vertical space, so there will be more changes in the structure. Can be with a chain, can be used boom. In the Normal Temperature test, it is stipulated that the distance between the bulbs or lampshade area and the canopy or ceiling in Semi-flush Mount is within 4 inches, which needs to make the Normal Temperature test, and whether to post a temperature warning depends on the temperature. If the distance is greater than 4 inches, Normal Temperature test is not required.
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Pump failure causes and troubleshooting
Symptoms cause and eliminate one, no water or intermittent water or less water 1. Motor does not start 1. To eliminate the circuit failure, find out the cause of the stuck and excluded 2. Pipeline or filter plugging 2. Removal of clogging 3. Pipeline rupture 3. Repair rupture 4. Suction outlet to expose the water 4. Drop submersible pump, if still no water, may exceed the head range of the submersible pump, it is recommended to change the pump 5. Submersible pump to the contrary 5. Exchange of any cable Two joints 6. Impeller ring and seal ring wear 6. Replacement of the impeller, seal ring II, the current is too large or ammeter pointer swing 1. Flow, low lift beyond the scope of use, motor overload 1. Reduce the flow 2. Motor graphite Bearing wear, rubber bearing or bush wear 2. Replacement of new bearings or bushings 3. Thrust bearing wear, impeller under the seat 3. Replacement thrust thrust or thrust plate 4. Shaft bending, bearings are not the heart 4. Pump Shaft bending Third, the electrical insulation of the motor winding geothermal resistance of less than 0.5 Megohm 1. Magnet wire insulation aging or damage 1. Disassemble the winding, with self-adhesive tape bandage damage or rewound the new coil 2. Rubber cable is damaged 2. Find out Damage, re-bandage with self-adhesive tape 3. sealing joint failure 3. Disassemble, pick up, re-banding 4. The motor can not start and there is a buzz 1. Wire disconnection or switch disconnection (single-phase operation) 1 Repair broken wire, connect the fuse 2. Motor bearing shaft 2. Repair or replace the bearing, repair shaft 3. Impeller with foreign body and the pump stuck 3. Remove foreign matter 4. Voltage is too low 4. Adjust the voltage five, Motor vibration 1. Motor rotor imbalance 1. Rotor balancing 2. Impeller unbalance 2. Impeller for static balance 3. Pump shaft bending 3. Straightening 4. Bearing (sleeve) wear 4. Replace the bearing sleeve Sixth, the motor winding burned 1. Motor water shortage 1. Note must be filled with water 2. Single-phase operation 2. Check and adjust starting protection equipment to ensure that the motor 3. Long time overload operation 3. Buck load, the current, voltage Can not exceed the nameplate