Brazing; Compressor - Hoshizaki FM-150KE(-N) Service Manual

2. BRAZING

1. Refrigerant R404A/R134A itself is not flammable, explosive and poisonous.
However, when exposed to an open flame, R404A/R134A creates phosgene gas,
hazardous in large amounts.
2. Always recover the refrigerant and store it in a proper container, if required by an
applicable law. Do not discharge the refrigerant into the atmosphere.
3. Do not use silver alloy or copper alloy containing arsenic.
4. In its liquid state, the refrigerant can cause frostbite because of the low temperature.

3. COMPRESSOR

Always install a new drier every time the sealed refrigeration system is opened. Do not
replace the drier until after all other repair or replacement has been made.
1) Disconnect the power source.
2) Remove the panels.
3) Remove the terminal cover on the compressor, and disconnect the compressor wiring.
4) Recover the refrigerant and store it in a proper container, if required by an applicable law
(See "1. [b] REFRIGERANT RECOVERY").
5) Remove the discharge, suction and access pipes from the compressor using brazing
equipment.
When repairing a refrigerant system, be careful not to let the burner flame contact any
electrical wires or insulation.
6) Remove the bolts and rubber grommets.
7) Slide and remove the compressor. Unpack the new compressor package. Install the new
compressor.
8) Attach the rubber grommets of the previous compressor.
9) Clean the suction and discharge pipes with an abrasive cloth/paper.
DANGER
IMPORTANT
WARNING
50