HydroChem 918-919 Troubleshooting

Cause: No water
Solution: Open water supply

Cause: Excessive water pressure
Solution: Install regulator if water pressure exceeds 85 PSI (flowing)

Cause: Eductor clogged
Solution: Clean* or replace

* In hard water areas, scale may form inside the discharge end of the eductor, as well as in other areas of the unit that are exposed to water. This scale may be removed by soaking the eductor in a descaling solution (deliming solution). To remove an eductor located in the cabinet, firmly grasp water valve and unthread eductor. Replace in same manner. Alternatively, a scaled eductor can be cleaned (or kept from scaling) by drawing the descaling solution through the unit. Operate the unit with the suction tube in the descaling solution. Operate the unit until solution is drawn consistently, then flush the unit by drawing clear water through it for a minute. Replace concentrate container and put suction tube into concentrate.

Cause: Clogged check valve
Solution: Clean or replace

Cause: Metering tip clogged
Solution: Rinse in hot water or replace: DO NOT REAM CLEAN!

Cause: Eductor clogged
Solution: Clean or replace

Cause: Clogged water inlet
Solution: Clean screen

Cause: Clogged foot strainer
Solution: Clean or replace

Cause: Low water pressure and/or volume
Solution: Replace with full container

Cause: Check valve not screwed into eductor firmly
Solution: Tighten, but DO NOT OVERTIGHTEN!

* In hard water areas, scale may form inside the discharge end of the eductor, as well as in other areas of the unit that are exposed to water. This scale may be removed by soaking the eductor in a descaling solution (deliming solution). To remove an eductor located in the cabinet, firmly grasp water valve and unthread eductor. Replace in same manner. Alternatively, a scaled eductor can be cleaned (or kept from scaling) by drawing the descaling solution through the unit. Operate the unit with the suction tube in the descaling solution. Operate the unit until solution is drawn consistently, then flush the unit by drawing clear water through it for a minute. Replace concentrate container and put suction tube into concentrate.

Cause: Inlet screen clogged
Solution: Clean or replace

Cause: Supply source inadequate
Solution: 4 GPM flow necessary to operate unit; move unit or replumb incoming line

Cause: Scaled eductor or fittings
Solution: Clean* or replace

* In hard water areas, scale may form inside the discharge end of the eductor, as well as in other areas of the unit that are exposed to water. This scale may be removed by soaking the eductor in a descaling solution (deliming solution). To remove an eductor located in the cabinet, firmly grasp water valve and unthread eductor. Replace in same manner. Alternatively, a scaled eductor can be cleaned (or kept from scaling) by drawing the descaling solution through the unit. Operate the unit with the suction tube in the descaling solution. Operate the unit until solution is drawn consistently, then flush the unit by drawing clear water through it for a minute. Replace concentrate container and put suction tube into concentrate.

Cause: Compression nut loose
Solution: Tighten nut 1/2 turn

Cause: Metering tip not in place (or wrong metering tip)
Solution: Press correct tip firmly into barb