MAHLE RTI RHS2680 User Manual

OPERATION

&

MAINTENANCE

MANUAL

RHS2680

Refrigerant Handling System

4075 East Market Street

York, Pennsylvania 17402

Phone: [phone]

Fax: [phone]

E-mail: [e-mail]

Manual P/N 035-80958-00

TABLE OF CONTENTS

Startup & Safe Operation ................... 1

Introduction to the RHS2680 ................. 2

Control Panel ............................. 3

Keypad Functions ......................... 4

Start-Up ................................. 5

Recover (Recycle) ......................... 6

Purge Air - Drain Oil ....................... 6

Vacuum ................................. 7

Charge .................................. 7

Maintenance ............................. 8

Parts Lists ............................... 9

FSC Adapter for DOT ......................11

CONGRATULATIONS

You have purchased one of the finest Recovery, Recycling,
and Charging Machines available!

Fill out and return the Warranty Card within 90 days to
activate the warranty and free lifetime technical support.

TECHNICAL SUPPORT

800-468-2321 (Ext. 259)

[e-mail]

STARTUP & SAFE OPERATION

9 Do not use a damaged unit. Check for shipping damage and place a claim with carrier if damage

is discovered.

9 Return the Warranty Card to activate technical support service and warranty coverage.

9 The RHS2680 should not be operated or serviced by any person who has not read all the

contents of this manual.

9 This manual describes normal operation and maintenance for the RHS2680. Failure to read and

comply with these instructions or any one of the limitations noted herein can result in serious
injury and/or property damage. The instructions should not be interpreted to anticipate every
possible contingency.

9 It is the responsibility of the owner/user to operate the RHS2680 in accordance with all laws and

specifications which may apply.

9 Recover (recycle) and charge only the refrigerants for which the RHS2680 is configured.

9 Avoid breathing refrigerant or lubricant vapor. Exposure may irritate eyes, nose and throat.

Ventilate work area if accidental system discharge occurs.

9 Wear safety glasses and protective gloves. Refrigerant has a very low boiling point and can

cause frostbite.

9 Follow the RHS2680 operating procedures sequentially to avoid prematurely disconnecting

hoses or opening valves which may release refrigerant to the atmosphere.

9 Do not expose the RHS2680 to moisture or operate in wet areas.

9 Use the RHS2680 in locations with ventilation that provides at least four air changes per hour.

9 Hoses must have shutoff devices within 12 inches of the connection point to the A/C to minimize

the introduction of air into the RHS2680 and the release of refrigerant when being disconnected.

9 Avoid using an extension cord with the RHS2680. If necessary use a good condition, three wire

grounded, #14 AWG or larger extension cord of the shortest possible length.

9 Disconnect power before performing any maintenance or service on the RHS2680.

9 Do not connect the red or blue hoses to the liquid port of a cylinder of refrigerant to fill the charge

cylinder. Doing so may cause the compressor to fail and void the warranty.

9 Do not connect the RHS2680 to the liquid side of any A/C with a capacity greater than 4 lbs.

Refrigerant in A/C Systems having larger capacities must be recovered from the vapor side only.

Special Considerations with R134a

R134a has been shown to be nonflammable at ambient temperature and atmospheric pressure.
However, tests under controlled conditions have indicated that at pressures above atmospheric and
with air concentrations greater than 60 percent by volume, R134a can form combustible mixtures.

While it is recognized that an ignition source is also required for combustion to occur, the presence
of combustible mixtures is a potentially dangerous situation and should be avoided.

Under no circumstances should any equipment be pressure tested or leak tested with air and R134a
mixtures. Do not use compressed air for leak detection in R134a systems.

Page 1

INTRODUCTION TO THE RHS2680

The RHS2680 is a complete refrigerant management center featuring state-of-the-art electronic
control with digital weight scale measuring of refrigerant. Operation of the RHS2680 is intuitive and
very easy to master.

Following is an overview of the operation and features of the RHS2680:

RECOVER (RECYCLE)

Refrigerant is recovered from the A/C, impurities (particulates, oil, moisture and air) are removed
and the refrigerant is stored in the internal cylinder. The recovery process stops when the
RHS2680 senses an 8 InHg vacuum at the A/C. Wait for at least two minutes and watch the
pressure gauges to determine if there is an increasing pressure. If pressure in the A/C rises
during this time period due to vaporization of residual liquid refrigerant, the RHS2680 will restart
to recover this refrigerant. When the RHS2680 stays off continually for at least two minutes, the
recovery procedure is complete.

VACUUM

A deep vacuum should be drawn on the A/C to remove air, moisture and refrigerant dissolved
in the oil. A deep vacuum is especially important if the A/C was opened for replacement of
components.

PURGE AIR - DRAIN OIL

Excess air and recovered oil must be removed from the RHS2680 after all refrigerant has been
recovered from the A/C. Temperature and pressure readings are examined and air is released
using the purge valve. Oil is drained into the oil drain cup for measuring to determine the need
to replenish the A/C.

CHARGE

Refrigerant is charged into the A/C by weight. The amount to be charged is entered and the
RHS2680 automatically charges the refrigerant into the A/C.

1 R12/R134a Selector Switch

2 Keypad

3 Function Valve

4 Purge Chart

5 Gauge Manifold

6 Tool Tray

7 Purge Gauge

8 Purge Valve

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