4
Fig. 5
5. Maintenance and Inspection
5.1 Troubleshooting and Corrective Measures
Symptom
Contents of inspection
Corrective measure
The pump fails to start.
- Check if the air regulator is normally operated.
- Check if the valve in the course of the pipe is not
closed.
(Remove the delivery hose at the pump-side outlet and
operate the pump.)
If the pump is operated, the delivery hose, pipe, or
outlet valve (gun) is clogged, or the operating
pressure is low.
If the pump is not operated, the pump is defective.
(Separate the lower pump and operate the pump with
only the air motor.)
If the pump is operated, the lower pump is defective.
If the pump is not operated, the air motor is defective.
Pressure check.
(0.15 to 0.7MPa)
Inspection
Repair service for
the lower pump
Repair service
The pump fails to stop.
- Check if the pump cannot be stopped when the
material outlet side remains open.
- If the outlet side is closed, check if any leak occurs at
the pipe, delivery hose, or each connecting portion.
- Check if the air bleed valve or bleeder valve remains
open.
- Check if there is no material.
Inspection
Replenishment
The pump is operated
but does not feed the
material by pressure.
- Loosen the air bleed valve to bleed the air staying
under the inductor plate and tighten the valve again.
- If the pump cannot be operated, open the bleeder
valve. When the material comes out, tighten the valve
again.
If the material is not fed, disassemble the check valve
and clean and check the ball seat surface and spring.
- The pump cannot be operated yet, the pump is
defective.
Inspection
Inspection
Disassembly and
inspection
Repair request for
the lower pump
The pump is operated
but the pressure and
flow rate are insufficient.
- Check if the supply air pressure is insufficient.
- Check if the packing of the air valve is not worn away.
Pressure check
Repair request for
the lower pump
5.2 Maintenance and Inspection
[Oiling]
For lubrication of the pump, perform oiling with a lubricant once every 10 days.
Apply the lubricant as follows.
1) Remove the air regulator.
2) As shown in the Fig. 5 at right, inject drops of lubricant (approximately 0.5mL)
into the oil cup. Use turbine oil first class ISO (VG-32) as the lubricant.
[Inspection]
The packing and parts around slide portion of the pump are worn away. Check
and replace them once a year.
[Daily check]
Before starting pump operation, retighten the bolts or connection parts of the pump. (Fig. 6)
Fig. 6
Summary of Contents for 110 Series
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