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Fault finding

Under normal operating conditions the Caleffi 5213TM series thermostatic mixing valve will
provide a very high level of performance. However, in some circumstances, where our
maintenance plan is not followed, the following problems may arise.

Symptom

Hot water at the cold taps

Fluctuating mixed water   
temperature

Erratic flow of water from 
the valve

No flow of water from the 
valve

Valve does not fail safe 
when tested

Cause

a) Operation of the insert 

check valve is hindered; 
check valve is not 
sealing correctly.

b) Check valves not fitted.

a) Erratic supply 

temperatures at the
inlets of the valve.

b) Starvation of the water 

supplies at the inlets
of the valve.

c) Incorrect commissioning 

of the valve.

a) Insufficient water 

supplies.

b) Fluctuations in supply 

pressures/temperatures.

c) Adverse effect created 

by other draw off points 
on the system.

a) In-line filters blocked.
b) Insufficient supply 

pressures.

c) Debris obstructing valve 

operation.

a) Installation not in 

accordance with our 
recommendations.

b) The minimum 

temperature differential 
not achieved.

c) Internal mechanism 

hindered by debris.

Corrective action

·

Replace faulty check 
valves 

·

Restore inlet conditions 
within the limits of the 
valve.

·

Stabilise inlet supply 
conditions.

·

Clean filters.

·

Restore inlet supplies.

·

Clean debris or scale 
from valve.

·

Install as oulined in the 
instructions.

·

Raise hot water 
temperature.

·

Clean debris or scale 
from valve.

11

F. istr. 38650_5213 9-07-2007 14:04 Pagina 11

Summary of Contents for 5213TM series

Page 1: ...ce i e within hospitals schools nursing homes etc The valve is designed to prevent the flow of water discharging from the mixed water outlet in the event of the failure of hot or cold supply The valve is complete with strainer and check valve at both hot and cold inlets Product Range Item code 521312TM with strainers and check valves at the inlets 15 mm 1 2 male compression end connection for copp...

Page 2: ... static 1400 kPa Maximum working pressure dynamic 500 kPa Minimum working pressure dynamic 20 kPa Maximum unbalanced dynamic supply hot cold or cold hot 6 1 Minimum temperature differential between hot water inlet and mixed water outlet to ensure shut off function 10 C Minimum temperature differential between mixed water outlet and cold water inlet to ensure stable operation 5 C Minimum flow rate ...

Page 3: ...lve If there are variations of temperature or pressure at the inlets the internal element automatically reacts attempting to restore the original temperature setting Thermal shut off In the event of a failure of a the hot or cold supply the piston will shut off stopping water discharging from the mixed water outlet The Caleffi valve requires a minimum temperature differential from hot inlet to mix...

Page 4: ...er bath or bidet The system must be sized taking into account the current legislation with regard to the nominal flow rate of each outlet The reference is AS NZS 3500 1 G l min 5 2 2 5 3 3 5 4 10 1 2 5 9 8 7 6 1 2 1 4 1 6 1 8 2 5 3 3 5 4 4 5 12 14 16 18 20 30 35 40 45 20 ΔP kPa 100 50 90 80 70 60 4 5 10 6 7 8 9 12 14 16 18 25 30 35 40 45 20 50 Ø 20 mm Ø 15 mm 120 140 150 15 mm Kv 1 5 m 3 h 20 mm K...

Page 5: ...2 9 10 4 6 7 5 2 3 1 VALVE BODY UNION NUT SEAL INSERT CHECK VALVE TAIL PIECE BODY INSERT STRAINER TEMPERATURE SPINDLE LOCKING NUT FLOW CONVEYOR THERMOSTATIC ELEMENT O RING SEAL UNDER SPRING UPPER BODY PROTECTIVE HEAD 5 F istr 38650_5213 9 07 2007 14 04 Pagina 5 ...

Page 6: ...m the outlet of the valve to any terminal fitting We recommend that the Caleffi 5213TM series valve is installed as close as practically possible to the outlet which it is serving The connecting hot and cold water supplies must be connected to the valve strictly in accordance with the indications on the body of the valve The inlets of the valves are clearly marked with the letters H hot and C cold...

Page 7: ...most Importance i e within hospitals schools nursing homes etc This type of valve is intended mainly for use in applications with set temperature below 45 C Thermostatic Mixing Valve Thermostatic Mixing Valve Thermostatic Mixing Valve Thermostatic Mixing Valve Pressure reducing valve if required Isolating valve Isolating valve Strainer check valve Strainer check valve T Pressure reducing valve if ...

Page 8: ...re established the valve can be commissioned Due to the unique design of the cap the temperature setting can be adjusted by removing the cap from the valve body and reversing the cap onto the temperature adjustment spindle We suggest that the following sequence is followed when commissioning the valve a Set the mixed water discharge temperature to the required temperature b Measure and record the ...

Page 9: ...Temperature adjustment Remove the cap Direction of temperature adjustment Temperature adjustment Lock adjustment spindle with locking nut 1 2 3 4 9 F istr 38650_5213 9 07 2007 14 04 Pagina 9 ...

Page 10: ...5213TM series valves can be accessed in a similar way to 1 to ensure freedom of operation and correct seating 3 In case of service work the internal components of the valve can be dis assembled for cleaning and discaling a Remove the cap of the valve 1 and the locking nut 2 b Remove the upper body 3 using a suitable spanner c Remove parts 5 7 noting the correct orientation d Remove all signs of sc...

Page 11: ...he water supplies at the inlets of the valve c Incorrect commissioning of the valve a Insufficient water supplies b Fluctuations in supply pressures temperatures c Adverse effect created by other draw off points on the system a In line filters blocked b Insufficient supply pressures c Debris obstructing valve operation a Installation not in accordance with our recommendations b The minimum tempera...

Page 12: ...ory to the requirements of AS 4032 1 2005 and it has the Licence N 2466 NSW approval The Caleffi 5213TM series thermostatic mixing valves are approved by the relevant authorities for use in health care buildings This product must be installed and commissioned in accordance with the manufacturer s instructions with the requirements of the local Water Supply Authority and with the documents followin...

Page 13: ...o be used for temperatures and pressures outside the above limits please consult the Australian Agent 3 If the cold water temperature is near freezing point refer to AS 3500 1 2 4 Temperature setting measured at outlet fixtures as required in Patient Occupied Areas of Health Care Buildings in NSW Adults 40 5 C to 43 5 C Safety cut off 46 0 C in case of Cold Water Failure Children and neonates 38 C...

Page 14: ... Pressure ratio This pressure ratio is calculated as Hot dynamic inlet pressure Cold dynamic inlet pressure or Cold dynamic inlet pressure Hot dynamic inlet pressure The maximum dynamic pressure ratio is 6 1 Pressure ratios outside the maximum allowed must be avoided because the ability of the valve to control the mixed temperature within tolerance will be affected If the requirements of the Hospl...

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Page 20: ...22 8491 R A Fax 39 322 863723 Http www caleffi com E mail info caleffi it AUSTRALIAN AGENT ALL VALVE INDUSTRIES Pty Ltd 30 205 Port Hacking Road Miranda NSW 2228 Tel 02 8543 5111 Fax 02 8543 5122 E mail info allvalve com au F istr 38650_5213 9 07 2007 14 04 Pagina 20 ...

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