Maintenance, Checking for leaks, Warning – Robinair AC375C Refrigerant Recovery, Recycle, Recharge Unit User Manual

Page 32

Maintenance

WARNING

Checking for Leaks

Over time, fittings can loosen as the unit is used and moved. During normal
use, inspect the unit for leaks a minimum of every three months (or as
specified by current local laws). Use the following steps to check the unit for
leaks.

NOTE: The manufacturer does not reimburse for lost refrigerant.

1. Remove the power cord from the outlet.

High voltage electricity inside the unit has a risk of electrical shock. Disconnect the
power before opening the back door or servicing the unit.

2. Remove the four screws that secure the hood.

3. Remove the hood.

4. Open the back door of the unit’s protective covering by turning the two

screws 1/4 turn counterclockwise, and lift the door off the unit.

5. Remove the five screws that secure the front section of the unit’s

protective covering, and remove the covering.

6. Use a leak detector to trace all lines and check all connections for

refrigerant leaks. Tighten any fittings or connections if a leak is indicated.

7. Replace the unit’s protective covering as follows:

a. Replace the front section, and replace the five screws that secure the

covering.

b. Replace, close, and lock the back door by turning the two screws

1/4 turn clockwise.

c. Replace the hood, and replace the four screws that secure the hood.

DO NOT use compressed air to pressure test or leak test the unit. Some mixtures of
air and refrigerant are combustible at elevated pressures. These mixtures are
potentially dangerous and may result in fire or explosion.