Friedrich ZoneAire Select PZH12K3SC handleiding

Niet gecategoriseerd

Friedrich

73 pagina's

PDF beschikbaar

Handleiding

R-32 SEALED SYSTEM REPAIR

Component Replacement/Brazing

• Warning: Ensure sufﬁcient ventilation at the repair place.

Warning: Presence of ﬁre extinguisher. If any hot work is to be conducted on the refrigerating equipment or any associated parts, have a ABC

class ﬁre extinguisher available to hand.

Warning: No person carrying out work in relation to a REFRIGERATING SYSTEM which involves exposing any pipe work shall use any sources of ignition in

such a manner that it may lead to the risk of ﬁre or explosion. All possible ignition sources, including cigarette smoking, should be kept sufﬁciently far away from the

site of installation, repairing, removing and disposal, during which refrigerant can possibly be released to the surrounding space. Prior to work taking place, the

area around the equipment is to be surveyed to make sure that there are no ﬂammable hazards or ignition risks.

Warning: Ensure there are no open ﬂame sources or hot surfaces that exceed 1200˚F in the work area.

NOTE: When brazing is required, the following procedures shall be carried out in the right order:

1. Install a piercing valve to remove refrigerant from the sealed system. (Piercing valve must be removed from the system before recharging.)

2. Remove and recover refrigerant, and evacuate the system. Refer to the refrigerant removal, recovery, and evacuation section of this manual.

3. Remove parts to be replaced by cutting, not by ﬂame.

4. Perform a check of the work area for the presence of ﬂammable refrigerant prior to brazing or performing any hot work. Use a non-Sparking (Not

Halide) Electronic Leak Detector rated for detecting R-32 refrigerant.

Warning: Under no circumstances shall potential sources of ignition be used in the searching for or detection of refrigerant leaks. A halide torch (or any other

detector using a naked ﬂame) shall not be used.

Ensure that the detector is not a potential source of ignition and is A2L certiﬁed leak detector.

5. Purge the braze point with nitrogen during the brazing procedure.

6. Pressurize nitrogen to 550 psi and leak test all connections with a leak detection ﬂuid. Repair any leaks found.

7. Reassemble sealed enclosures accurately. If seals are worn, replace them.

8. Install a process tube to sealed system.

9. Charge the system with the amount of refrigerant speciﬁed on the model nameplate. Refer to the refrigerant charging section of this manual for

charging procedures.

10. Check safety equipment before putting into service.

Bekijk gratis de handleiding van Friedrich ZoneAire Select PZH12K3SC, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.