IWAKI EH-E, Инструкция по эксплуатации

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1. Maintenance
Caution
Before working on the pump, disconnect the power cord,
depressurize the discharge tubing and drain or flush any residual
liquid from the pump head and valves.
2.Diaphragm Replacement
Disconnect AC power to the pump and disconnect the suction tubing and discharge
tubing. Remove the four head bolts with a 4mm hex wrench. Turn the stroke length
knob fully counter-clockwise. Unscrew the diaphragm and remove its retainer (small
disk behind the diaphragm). Install the new retainer and diaphragm on the shaft. Turn
the diaphragm clockwise until it bottoms on the shaft. Replace the pump head and
tighten the head bolts to a torque of 2.6 N.m.
3. Valve Replacement
Remove the suction and discharge tubing. Remove the suction fitting, two valve
cartridges, o-ring and gasket(s). Install the new o-ring, gasket(s) and valve cartridges.
Be sure both valve seats are in the same orientation. Refer to Figure 6, below. Tighten
the suction fitting. Similarly remove and replace the discharge valve cartridges, o-ring
and gasket(s).
4. Tubing
Check ends of tubing for splits, cracks, or thin spots. Examine the full length of tubing
for damage due to chafing, abrasion, stress cracks, excessive temperature or exposure to
ultraviolet light (direct sunlight or mercury vapor lamps). If any signs of deterioration
exist, replace the entire length of tubing. It is a good idea to replace discharge tubing on
a regular preventive maintenance schedule every 12 months.
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