Hitachi EC 129 Maintenance, Service and Repairs, Cleaning the intake filter, Draining tank

(2)If the extension cord does not conform to the specifications given on page 7 replace with an extension cord such as that shown on page 7. If the capacity of the power supply is insufficient, increase the power supply capacity to remove the cause of a flow of excessive current (over-current).

(3)Wait approximately 5 minutes, then press the reset switch of the thermal protector (Fig. 9).

(4)Open the drain cock and confirm that the pressure gauge (A) indicates 0 PSI (0 bar) (Refer to Fig. 7 and Fig. 8).

(5)Follow steps (2) to (4) in 1. Start up on page 12 and restart. If the motor still stops during operation, please contact the service center.

Reset switch of thermal protector

Fig. 9

MAINTENANCE

WARNING: Disconnect the compressor from the power source and remove the compressed air from the air tank before performing the maintenance operations. Allow the compressor to cool before performing the maintenance operations.

1. Cleaning the intake filter

Remove the intake filter (Refer to Fig. 1) every 50 hours or once a week and clean the inside of the intake filter and the filter element with compressed air (Fig. 10).

WARNING: Never clean filter element with a flammable liquid or solvent.

CAUTION : Do not operate without the intake filter.

Filter element

Intake filter

Fig. 10

English

NOTE: Replace the filter element when it becomes dirty.

2. Draining tank

Drain tank daily or after 4 hours of use. Open drain fitting and tilt compressor to empty accumulated water (Refer to Fig. 8).

3. Oil change-oil topping off

CAUTION: Overfilling with oil will cause premature compressor failure. Do not overfill.

(1)Within the first 50 hours of operation, completely replace the oil of the pumping element. Unfasten the oil drain cap on the casing cover, drain all the oil, and screw the cap back on (Refer to Fig. 1 and Fig. 11).

Drain cap

Fig. 11

Pour oil into the hole of the dipstick.

To the level indicated on the dipstick (Refer to Fig. 4).

For oil replacement, follow the table below.

OIL TYPE

SAE 5W50 SYNTHETIC OIL

For both summer and winter use

SAE 10W40 MULTI-GRADED OIL

For warm weather use only

(2)Check the oil level of the pumping element every 50 hours or once a week.

(3)Change the oil every 300 working hours or every 6 months.

SERVICE AND REPAIRS

All quality compressors will eventually require servicing or replacement of parts because of wear from normal use. To assure that only authorized replacement parts will be used, all service and repairs must be performed by a

HITACHI AUTHORIZED SERVICE CENTER, ONLY.

NOTE: Specifications are subject to change without any obligation on the part of the HITACHI.

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