Maintenance And Inspection; Troubleshooting; Replacement Of Consumables And Repair - YAMADA HR Series Instruction

4. Maintenance and Inspection

4.1 Troubleshooting

Problem
Reel cannot be locked.
Supply hose doesn't recoil
even after ratchet is
disengaged.
Discharge decreases or
completely stops.
Leak occurs at joint.
4.2 Maintenance and Inspection
The following maintenance is recommended to be accomplished regularly at least once a year.
Hoses and each moving part are consumables. Inspect them periodically and if they are damaged or worn out,
contact our distributor or service shop for early replacement.
1) Check the spring function by testing if the supply hose recoils properly.
2) Check the swivel and hose couplings for leak by sight or hand. Change the gasket if necessary.
3) Check the hose for damage by sight or hand. Clean the hose if it is oiled or dirty.
4) Check the ratchet mechanism and inspect the ratchet (pawl) for damage.
5) Check the mounting of the reel on wall or ceiling.

4.3 Replacement of Consumables and Repair

Contact our distributor or service shop for replacement of consumables or repair.
To replace the supply hose, follow the following instructions.
■Preparation for Replacement
1) Turn off the supply of air/water/oil/grease/warm water. Then, remove residual pressure in the hose.
2) Wind up the hose completely onto the drum and neutralize the spring tension according to [3.3 Adjustment of
spring tension].
3) Remove the hose-stop and any other devices such as a gun from the supply hose.
■Replacement of Supply Hose
1) Let the hose end pass through the outlet and disconnect the hose from the drum swivel.
2) Pass a new supply hose through the outlet and attach it to the drum swivel.
3) Attach the hose-stop to the new hose, adjusting its position.
4) Remove the two screws securing the spring hub.
5) Insert a square wrench (13mm) into the square hole in the spring hub. (Fig.16)
6) Turn the wrench to the A direction (counterclockwise) to wind up the supply hose.
7) Once the hose is completely wound onto the drum, adjust spring tension by turning the wrench to the A direction
(counterclockwise).
8) Secure the spring hub with the two screws, holding the square drive tightly.
9) After adjustment, check that the required length of the hose can be drawn out without stretching the spring to the
limit.
<Note>
When replacing the service hose and inlet hose for air hose reels, please tighten the each hose band by 3N-m and
5N-m of torque.
Possible Cause
Hose-stop or spring is damaged.
Hose is wound unevenly and stuck somewhere.
Supply hose is clogged or damaged.
Gasket in swivel is worn out.
Contact for service.
Pull out supply hose completely and
rewind it.
Clean supply hose or replace it.
Contact for service.
6
Remedy