CALEFFI
S.R. 229, n. 25 · 28010 Fontaneto d’Agogna (NO) · Italy · Tel. Int. +39 322 8491 R.A. · Fax +39 322 863723
Http://www.caleffi.com · E-mail:[email protected]
AUSTRALIAN AGENT
All Valve Industries
Unit 2, 18-28 Sir Joseph Banks Drive
Kurnell NSW 2231
Ph: (02) 8543 9811
Fax: (02) 8543 9822
Email: [email protected]
Safety
If the pressure reducing valve is not installed, commissioned and maintained properly in
accordance with the instructions contained in this manual, it may not operate correctly,
and may cause damage to objects and/or persons.
Make sure that all the connections are water-tight.
When installing the pressure reducing valve, make sure not to over-tighten the connections to the
valve as, over time, a failure can occur with subsequent water leakage causing damage.
In the case of highly aggressive water, arrangements must be made to treat the water before it enters
the pressure reducing valve, in accordance with current legislation. Otherwise, the pressure reducing
valve may be damaged and not function correctly.
Leave this operating manual with the user
2
Unscrew (anticlockwise) the setting screw to decompress the spring inside.
3
Unscrew the cover.
4
Extract the cartridge with the aid of pincers to grip the head of the screw.
5 After inspection and cleaning, refit the cartridge or, alternatively, fit a replacement cartridge.
6 Reset the valve (see
Installation
).
Trouble-shooting
1. Increased downstream pressure near a water heater
This problem is due to the water being heated by the water heater. There is no relief of the pressure
because the reducing valve is correctly closed. The solution is to install an expansion
vessel (between the heater and the reducer) to “absorb” the pressure increase.
2. The pressure reducing valve does not maintain its set pressure
In most cases this is the result of impurities that deposit on the valve seat causing leakage
with a resulting increase in pressure downstream. The solution is to fit a filter upstream from
the reducer and subsequently to maintain and clean the cartridge (see
Maintenance
).
2
3
4
