CALEFFI 521367A 설치 및 시운전 매뉴얼 - 페이지 14

{카테고리_이름} CALEFFI 521367A에 대한 설치 및 시운전 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. CALEFFI 521367A 17 페이지. Scald protection 3-way thermostatic mixing valve

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Troubleshooting

Under normal operating conditions the Caleffi 5213 series thermostatic mixing valve will provide a

very high level of performance. However, in some circumstances, when the included maintenance

plan is not properly performed, the following problems may arise.

Sympton

Hot water at the cold faucets a) Inserted check

Fluctuating mixed water

temperature

Erratic flow of water from

the valve

No water flowing from the

valve

Valve does not shutoff when

tested

Cause

operation failed.

b) Check valves not

installed.

a) Erratic supply tem-

peratures at the valve

inlets.

b) Starvation of the

water supplies at the

valve inlets.

c) Incorrect commis-

sioning of the valve.

a) Insufficient water

supplies.

b) Fluctuations in

supply pressure and/

or temperatures.

c) Adverse effect cre-

ated by other draw-off

points on the sytem.

a) In-line filters

blocked.

b) Insufficient supply

pressures.

c) Debris obstructing

valve operation.

a) Installation not in

accordance with this

instruction manual.

b) Minimum tempe-

rature differentail not

achieved.

c) Internal mechanism

impaired by debris.

Corrective action

Replace faulty check valves.

Restore inlet conditions within the

limits of the valve.

Stabilize inlet supply conditions.

a) Clean filters.

b) Restore inlet supplies.

c) Clean debris or scale from valve

internals.

a) Install as outlined in these instruc-

tions.

b) Raise hot water temperature.

c) Clean debris or scal from valve.