Armstrong Rada 40 설치 및 유지 관리 매뉴얼 - 페이지 10

{카테고리_이름} Armstrong Rada 40에 대한 설치 및 유지 관리 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Armstrong Rada 40 12 페이지. Water temperature controls, groups of fixtures, thermostatic

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Fault Diagnosis

Symptom

1. Only hot or cold water

from outlet.

2. No flow from Mixing

Valve outlet.

3. Mixed water temperature

at TMV outlet fluctuates

and does not respond to

adjustment.

4. Hot water in cold supply

and vice-versa.

5. Mixed water temperature

too high.

6. Mixed water temperature

too low.

7. Mixed water flow rate is

reduced.

8. Water leaking from valve

body.

Cause

a. Inlet supplies reversed (i.e.: hot to cold or vice-

versa)

b. No hot water available from hot water source.

c. Screen/filters occluded or inlet supply fittings

plugged.

d. Refer to Symptom 4 below.

e. Proportioning mechanism (shuttle) trapped against

hot/cold seat.

a. Hot or Cold inlet supply failure; Thermostat holding

correct shutdown function.

b. Screens/filters blocked or inlet supply fittings

plugged.

a. Thermostat not operating correctly.

b. Mixing Valve operating below minimum required

flow rate.

c. Static inlet supply pressures beyond valves

capability to correct.

d. Inlet supply pressures fluctuating beyond valves

capability to correct.

e. Hot water supply temperature fluctuating beyond

valves capability to correct.

f. Partially occluded screens/filters or partially blocked

inlet fittings.

a. Indicates non-functioning check valve (s).

a. Mixing Valve has not been commissioned correctly

and set too high.

b. Mixing Valve has not been commissioned correctly

and was set when the hot supply temperature was

too low.

c. Hot water is migrating into cold supply.

d. Thermostat not operating correctly.

a. Mixing Valve has not been commissioned correctly

and is set too low.

b. Hot water heat is not keeping up with demand.

a. Partially occluded inlet screens/filters or partially

blocked inlet fittings.

b. Inlet supply pressure has fallen.

c. Accumulated pressure losses within the system are

too high.

a. Seals worn or damaged.

Check-Rectify. Tip: check rear of valve under

polymer mounting plate for raised "H" (hot)on

appropriate inlet. If sight evaluation is not possible

consult factory Technical Support for additional

diagnositc tips.

Check-rectify

Check-Rectify

Refer to Symptom 4 below.

Refer to Servicing/Maintenance on Pages 7-8. and

Fig. 8-1. Inspect-Rectify-Replace.

Check-Rectify.

Replace cartridge D33384.

Check that at least 1 GPM is flowing through valve.

Check-Rectify

Check by carefully sensing inlet hot supply pipe

work- rectify.

Check-Rectify.

Diagnose by turning off mixed water outlet flow and

check to see if inlet hot pipe work becomes cold

and vice-versa.

Refer to Commissioning on Page 6 - Rectify.

See Item 4 above.

Replace cartridge D33384.

Refer to Commissioning on Page 6 - Rectify.

Check-Rectify.

Refer to a trained and appropriate authority for

system sizing assistance.

Obtain Seal Pack D33387.

Action