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Maintenance personnel should also ensure that the user's staff are aware of the
importance of reporting temperature variations and that when detected, these
should be recorded in the log.
It is recommended that the user maintains a log of the in-service tests described herein,
together with a record of any service work carried out and the replacement of critical
components. It is also recommended that any maintenance personnel sign the user
log in respect of all thermostatic mixing valves examined on each attendance at the
user's premises.
Refer to 'Recommended content of Maintenance Log' on page 31.
Thermostatic Mixing Valve Performance Records
(Log Book)
Training
Maintenance Procedures
Maintenance must be carried out in accordance with these instructions, and must
be conducted by designated, qualified and competent personnel.
This mixing valve is designed for minimal maintenance under conditions of normal
use.
External surfaces may be wiped clean with a soft cloth, and if necessary, a mild
washing-up type detergent or soap solution can be used.
Warning!
Many household and industrial cleaning products contain mild abrasives
and chemical concentrates, and should not be used on polished, chromed or
plastic surfaces.
Should an internal malfunction occur then this will probably require replacement of
parts.
Components are precision-made, so care must be taken while servicing to avoid
damage.
When ordering spare parts, please state product type, i.e. Rada 425-t3 c, and
identify part name and number (refer to
PARTS LIST
). A Seal pack is available,
containing all the seals that may be necessary for renewal during maintenance or
servicing.
Lubricant
Important!
All seals are pre-lubricated. If you need to lubricate the seals, use only
a small amount of silicone-only based lubricants on this product. Do not use oil-
based or other lubricant types as these may cause rapid deterioration of seals.
