11
Technical Information
Service Manual
System leaks must be immediately repaired by authorised personnel after becoming
acquainted. If they cannot be repaired immediately, the refrigerant charge should be
removed from the system until the point at which the leak can be properly repaired.
· Removing the refrigerant from the system in order to avoid an uncontrolled
discharge.
· Examine the leak source, determining the reason for the leak and carry out the
proper course of action
· Repair properly (NO „temporary repairing”)
· Based on the results of the systems’ examination, suitable measures need to be
identied in order to avoid a recurrent appearance of the leak.
· Before embarking on the repair, ensure that the refrigerant has been removed
and the system ushed with OFDN, especially if brazing is to take place
· After each intervention into a refrigeration system (repairing leaks, replacing
components, brazing) the system must be subject to a leak test and following
strength test of the system.
Repair of Leaks
Regular
professional
brazing
experience is an
important pre-
condition for the
work with
hydrocarbon
refrigerants!
The use OFDN is
an important
precondition for
professional
leak repair!
1. System flush-
ing from HC
2. Inert gas braz-
ing
3. Leak testing
4. Strength test-
ing
5. Cleaning
(blowing)
agent
While servicing the unit it is recommended for the whole period of work — before,during
and after — to monitor the gas concentration in the air within the work environment. By
monitoring the air within the work environment the danger of a possible formation of
ammable atmosphere can be detected early.
Doing the monitoring, ensure that the gas detectors are suitable for hydrocarbon detection.
Never use open re or a device with an ignition source for the detection of gas or for leak
detection.
Gas Detection
The HC leak de-
tector is indeed
a PPE device!
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