Fieldpiece MR45 Manuel utilisateur

Fieldpiece®

Refrigerant

Recovery Machine

OPERATOR'S MANUAL

Model MR45 (for models with Zero Stop)

Contents

Safety Information. . . . . . 4

Warnings

Caution

Description . . . . . . . . 8

Features

What’s included

Speciﬁcations . . . . . . . 10

Certiﬁcations . . . . . . . 11

UL Veried Performance Data

Tech Tips . . . . . . . . .12

General

Setup

Operational

Controls . . . . . . . . . 14

Display and Buttons

Status Icons and Messages

Port Routing Control

MR45 Refrigerant Flow

Dynamic Pressure Measurement

Functions . . . . . . . . . 22

Self Test

Self Purge

Purging a Recovery Cylinder

Direct Liquid/Vapor Recovery

Push/Pull Recovery

Troubleshooting . . . . . . 28

Status Messages

Other Symptoms

Maintenance. . . . . . . . 30

General

Mesh Screen Filter

Limited Warranty . . . . . . 32

Obtaining Service

Safety Information

Read, understand, and follow this entire

manual, with special attention given to Warning

and Caution statements before operating this

machine.

For use only by qualified and certified

technicians in the safe use, handling, and

transporting of refrigerants. This machine is

designed to recover most CFC, HFC, HCFC,

and some HFO refrigerants that have an A1 or

A2L flammability rating only. Please refer to

flammable refrigerant safety guides, regional

codes and legislation for more information.

WARNING

FAILURE TO HEED THESE HAZARDS AND ACTIONS CAN RESULT IN

SERIOUS INJURY OR DEATH:

• Do not operate in a wet location as electrical shock risk.

• Machine is only rated for use on 110VAC mains power

• Always use a grounded outlet

• Always wear Proper Protective Equipment (PPE), which includes gloves

and safety glasses and earplugs

• Know proper safety and handling requirements of the refrigerant in the

Safety Data Sheet (SDS)

• Avoid breathing refrigerant and oil vapors

• Handle hoses and equipment carefully as refrigerant is under high

pressure and can cause frost bite

• Do not operate in or near explosive atmospheres

• Do not use with hydrocarbons (HC)

• Perform leak detection in accordance with recommended practice to

verify working environment is free from leaking refrigerant as it can be

toxic and or ﬂammable

• Only work in well-ventilated areas (at least 4 air exchanges per hour)

• Ensure power and extension cords are in good working condition to

prevent shock and spark hazards

• Prevent motor overheating by using 14AWG minimum and 50AWG

maximum cord size

ADDITIONAL SAFETY INSTRUCTIONS FOR RECOVERING A2L

REFRIGERANTS (e.g. R-32, R-1234yf, R-1234ze):

• Adhere to local occupational safety codes and possess detailed

knowledge and skills when handling mildly ﬂammable refrigerants

• Have emergency, evacuation, and ﬁre protection plans

• Designate and monitor aTemporary Flammable Zone with a 3-meter

perimeter

• Identify and disable all possible ignition sources within this zone

• Monitor air with a ﬂammable refrigerant leak detector within this zone

• Ensure at least 5 air exchanges per hour within this zone

Intentionally Blank

• Make power connection of the recovery machine and other equipment

outside of the Temporary Flammable Zone

• Bond the recovery machine outlet port to the recovery tank’s unpainted

ﬁtting with a grounding strap to dissipate static electricity build up

during during recovery process

• Ensure area around machine is free of debris that could enter the

machine and cause accidental sparking

• Always remain in attendance and observant when the machine is

running

• Do not mix ﬂammable refrigerants with air

• Use an evacuated DOT recovery tank

• If system has a suspected leak, stop recovery at 0 psig/bar to prevent

air from entering the recovery tank

• After recovery, purge system with 100% nitrogen before opening

system for repair

CAUTION

FAILURE TO HEED THESE HAZARDS AND ACTIONS CAN CAUSE

EQUIPMENT DAMAGE:

• Ensure that recovery machine, hoses, tank and other equipment are in

good working condition

• If the power cable is damaged, it must be replaced by the

manufacturer, its service agent, or similarly qualiﬁed persons in order

to avoid a hazard

• Avoid overﬁlling recovery tanks by following refrigerant manufacturer’s

ﬁlling instructions and using a weight scale

• Avoid cross contamination (mixing) of refrigerants

• Ensure mesh screen ﬁlter is installed & clean (page 30)

• Use a ﬁlter drier on the input port and change it often to protect

machine from contaminated refrigerants

• Ensure power switch is OFF before plugging into power

• Disconnect power and allow fan to stop before opening or servicing the

recovery machine

• Perform a self test periodically (page 22)

Features

• Lightweight (22 lbs)

• Smooth and Fast Operation (1 HP DC Motor)

• Digital Display with Status Messages

• Reliable Rubberized Construction

• Easy to Access Port Design

• Hex Nut Secures Input Port During Hose Removal

• Power Cord Storage

• Ceramic Cylinders

• Class A2L Refrigerant Compatible

• Zero Stop (3 Selectable Auto-stop Levels)

• Self Purge

• Wide Operating Voltage (95 to 130 VAC)

• UL Veriﬁed to Section 608 of EPA Clean Air Act

• UL Veriﬁed to AHRI Standard 740

What’s Included

MR45 Refrigerant Recovery Machine

10 Extra Mesh Screens for Input Port

3 Extra O-ring for Input Port

Operator’s Manual

1 Year Warranty

Description

The MR45 is the rst variable speed DC motor

recovery machine with a digital display. Pump

refrigerant more easily and quietly than ever

before. Connect hoses without navigating around

dark tight spaces or picking the pump o the

ground. View status messages and pressures

directly on the big bright display.

Carry the machine to and from the job site

easily and well protected from environmental

hazards.Turn the single rubberized control valve

to route refrigerant through MR45, and use the

self-purge function to pump the last traces into

the recovery cylinder instead of being left in the

machine or released into the environment.

Class A2L compatibility for a wide range of jobs.

To resist contaminating recovered refrigerant,

MR45 automatically stops at 0 psig/bar by default.

1110

Speciﬁcations

Display: 2 x 10000 count LCD with status messages

Backlight: Blue color

Measurement rate: 3.3 times per second, nominal

Input Port Pressure Sensor Range:

-30”Hg to 600 psig (-76 cmHg to 4100 kPa)

Output Port Pressure Sensor Range:

-30”Hg to 600 psig (-76 cmHg to 4100 kPa)

High Pressure Cutoﬀ: 558 psig (3850 kPa), nominal

Resolution and Units: 1 psig (1”Hg), 0.05 bar (2 cmHg),

0.01 Mpa (2 cmHg), 5 Kpa (2 cmHg)

Pressure Sensor Accuracy:

± 0.5“ Hg, ± 1.3 cmHg (Vacuum)

± (0.6% of reading +2 psig), ± (0.6% of reading +14 kPa)

Final Recovery Vacuum: 14.9”Hg, 38 cmHg

Compressor: Twin cylinder reciprocating (oil-less)

DC Motor: 1 HP (variable smart speed)

Power Source: 120 VAC @ 60 Hz 1 phase

Nominal Current Draw: 12.0 AAC

Valve: Single dual-route ball valve

Input Port Filtration: 9 mm mesh screen, stainless

Dimensions: 14.8 inch x 9.8 inch x 13.5 inch

376 mm x 250 mm x 344 mm

Weight: 22 lbs, (10kg)

Operating Environment: 32°F to 104°F (0°C to 40°C)

Storage Environment: -4°F to 140°F (-20°C to 60°C)

Approved Refrigerants: R12, R134A, R22, R401A (MP39), R401B,

R401C, R402A, R402B, R404A, R406A, R407A, R407B, R407C,

R407D, R408A, R409A, R410A, R411A, R411B, R412A, R500, R502,

R507, R509.

US Patent: www.ﬁeldpiece.com/patents

Certiﬁcations

WEEE (Do not dispose through

typical waste streams.)

IN ACCORDANCEWITH SECTION 608 OF THE CLEAN AIR ACT:

THIS EQUIPMENT HAS BEEN CERTIFIED BY UNDERWRITERS

LABORATORIES INC. TO MEET EPA’S MINIMUM REQUIREMENTS FOR

RECOVERY EQUIPMENT INTENDED FOR USE WITH CATEGORY III, IV,

AND V REFRIGERANTS OUTLINED IN AHRI 740, TABLE 4.

UL Veriﬁed Performance Data

Refrigerant R22 R134A R407C R410A

Liquid Recovery

(kg/min) 4.7 2.9 5.1 5.6

Vapor Recovery

(kg/min) 0.28 0.28 0.33 0.33

Final Recovery Vacuum

(kPa) 50.8 50.8 50.8 50.8

Residual Trapped

Refrigerant (kg) 0.005 0.008 0.004 0.005

High Temp (104°F) Vapor

Recovery (kg/min) 0.40 - - -

1312

Tech Tips

General

1. Store in the self purge or recover position. Do not store in the

CLOSED position as trapped air and refrigerant can expand and

damage components.

2. For extended storage, purge with nitrogen, set to RECOVER, and

screw non-sealing caps onto the ports.

3. Recovery machines are not vacuum pumps and should not be

used for deep evacuations.

4. Do not run the machine without the mesh screen ﬁlter (page 30).

Doing so will void the warranty and damage the machine.

5. Understand the refrigerant safety data sheet (SDS).

Setup

1. Know the refrigerant of the system and make sure your recovery

cylinder matches that type.

2. Hoses:

Short as possible (3/8”hose with 1/4”ﬁtting).

Core depressors removed.

Ball valve shutoﬀs instead of low loss ﬁttings.

Replace if worn.

3. Manifold gauges are not necessary for recovery but can make it

more convenient and increase speed by having 2 system hook

ups.

4. Use a Schrader valve core removal tool to temporarily remove

valve cores from service valves.

5. Use the push-pull method if recovering over 30 lbs (14kg).

6. Evacuate your empty recovery cylinders to 29.6”Hg (75 cmHg)

before use.

7. Know how much refrigerant you expect to recover before

starting.

8. Ensure there’s enough room in the recovery cylinder to not

exceed 80% ﬁlled during the job, or monitor and have a second

cylinder ready.

9. Always purge hoses before recovery. If cylinder is too hot, use an

ice bath to reduce the temperature and pressure of the cylinder.

10. If cylinder pressure is higher than expected, you can purge non-

condensables into another cylinder (page 23).

Operational

1. Recover as much liquid as possible before recovering vapor.

2. Recovery is faster when the recovery cylinder is cooler.

3. You can use a heat gun to warm refrigerant lines to boil trapped

refrigerant.

4. Recover from both suction and liquid lines at the same time for

faster vapor recovery.

Port Routing Control Knob

Input Port

Mesh Screen Filter

Backlit Digital Dual Display and Buttons

Output Port

Power Cord Storage

1514

Controls

Display and Buttons

UNITS

Refrigerant Recovery Machine

MR45

START

STOP

CANCEL

ALARM

MUTE

PRESS 3 SEC

ZERO

SENSOR

PRESS 3 SEC

AUTO-STOP

LEVEL

Input Pressure Output Pressure

Status Icons and Messages

START/STOP

Start or Stop the motor.

ZERO SENSOR (press 3 seconds)

Zero pressure sensors. Ports must be open to atmosphere.

CANCEL ALARM

Cancel alarm currently sounding (temporarily mute).

MUTE (press 3 seconds)

Toggle mute for all sounds (setting is saved).

UNITS

Select pressure/vacuum units.

AUTO-STOP LEVEL (press 3 sec. to enter setup)

Once entered, press to change the pressure/vacuum level that

triggers the ﬁrst automatic stop: 0 psig (default), -10 psig, -20psig.

Wait 5 seconds to exit setup, automatically saving desired setting.

Status Icons and Messages

UNITS

Refrigerant Recovery Machine

MR45

START

STOP

CANCEL

ALARM

MUTE

PRESS 3 SEC

ZERO

SENSOR

PRESS 3 SEC

AUTO-STOP

LEVEL

The icon rotates when the motor is running.

The icon is shown when MR45 is set to MUTE.

OK TO START

Motor stopped. Temperatures, voltages, and pressures are currently

safe to start the motor again.

COMPLETE / Low Pressure Cutoﬀ

Motor stopped. Input pressure/vacuum reached one of three

auto-stop levels for 10 seconds: 0 psig, 10”Hg vac, or 20”Hg vac

(0 bar, 25 cmHg vac, or 50 cmHg vac)

Input Closed

Cannot zero pressures. Open input port.

Output Closed

Cannot zero pressures. Open output port.

High Voltage Warning

Motor stopped. Voltage was above 130 VAC.

Low Voltage Warning

Motor stopped. Voltage was below 95VAC.

High Pressure Cutoﬀ

Motor stopped. Output (cylinder) approached dangerous pressure.

Motor Fault 1

Motor stopped. Motor temp. measured above operating range.

Motor Fault 2 (“throttle” shows on display)

Motor stopped. Motor current (amps) rose above operating range.

Throttle RECOVERY to reduce cylinder pressure (page 19).

Motor Fault 3

Motor stopped for unknown reason.

1918

Port Routing Control

CLOSED

• Input and Output closed.

• Set to either closed position to close

oﬀ both ports during setup.

SELF PURGE

• Input closed, Output open.

• After recovery is complete, set

to this position to close the IN port

before you START the purge.

RECOVER

• Input and Output fully open.

• Set to this fully open position for

most of the recovery process.

RECOVER (throttled)

• Input and Output partially open.

• Rotate away from RECOVER

in either direction to reduce liquid

slugging if knocking occurs.This

slows the ﬂow of refrigerant so the

machine operates more smoothly.

• Only throttle as much as needed for

smooth operation.

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