Site Preparation and Installation

Total refrigerant = Units and Lines*

Table 11 Refrigerant charge

 

Model #

R-407C, oz (kg)

 

 

 

60Hz

 

50Hz

 

 

 

 

 

 

 

MM*60E

 

MM*59E

4 (0.11)

 

 

 

 

MM*60K

 

MM*59K

4 (0.11)

 

 

 

 

 

MC*65A

 

MC*64A

432

(12.3)

 

 

 

 

 

MC*69W

 

MC*68W

94

(2.7)

 

 

 

 

 

PFH067A-_L7

 

PFH066A-_L7

426

(12.1)

 

 

 

 

 

PFH067A-_H7

 

PFH066A-_H7

827

(23.4)

 

 

 

 

 

PFHZ67A-_L7

 

PFHZ66A-_L7

827

(23.4)

 

 

 

 

 

All evaporator units and condensing units are fully factory-charged with refrigerant. If field-supplied refrigerant piping is installed, refrigerant must be added; refer to Table 12 to determine the additional charge.

Table 12 Line charges - refrigerant per 100 ft. (30m) of Type L copper tube

Line Size,

R-407C, lb/100 ft. (kg/30m)

 

 

 

O.D., in.

Liquid Line

Suction Line

 

 

 

 

3/8

3.7

(1.7)

—

1/2

6.9

(3.1)

—

 

 

 

5/8

11.0 (5.0

0.4 (0.2)

3/4

15.7 (7.1)

0.6 (0.3)

 

 

 

 

7/8

23.0

(10.4)

1.0 (0.4)

 

 

 

1-1/8

—

1.7 (0.7)

1-3/8

—

2.7 (1.1)

 

 

 

 

Quick Connect Fittings

NOTE

When hard piping is used, complete all piping and evacuate lines before connecting quick connects.

Be especially careful when connecting the quick connect fittings. Read through the following steps before making the connections.

1.Remove protector caps and plugs.

2.Carefully wipe coupling seats and threaded surfaces with a clean cloth.

3.Lubricate the male diaphragm and synthetic rubber seal with refrigerant oil.

4.Thread the coupling halves together by hand to insure that the threads mate properly.

5.Tighten the coupling body hex nut and union nut with the proper size wrench until the coupling bodies “bottom out” or until a definite resistance is felt.

6.Using a marker or pen, make a line lengthwise from the coupling union nut to the bulkhead.

7.Tighten the nuts an additional quarter-turn; the misalignment of the lines shows how much the coupling has been tightened. This final quarter-turn is necessary to insure that the joint will not leak. Refer to Table 13 for torque requirements.

Table 13 Refrigerant quick connect sizes and torque

Size O.D.

Coupling

Torque

Cu

Size

lb-ft

 

 

 

1/2”

#10

35-45

 

 

 

1-1/8”

#12

50-65

 

 

 

21

Liebert® Mini-Mate2™

Page 26 Page 28
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Emerson MINI-MATE2 user manual Total refrigerant = Units and Lines, Quick Connect Fittings, Refrigerant charge
Page 26 Page 28

MINI-MATE2 specifications

The Emerson MINI-MATE2 is a cutting-edge temperature and pressure monitoring device specifically designed for the needs of the refrigeration and HVAC industries. Known for its reliability and user-friendly interface, this compact unit serves as a key tool for technicians and facility managers looking to optimize system performance while ensuring compliance with safety standards.

One of the main features of the MINI-MATE2 is its advanced digital display, which allows users to easily monitor and interpret temperature and pressure readings in real-time. Its highly responsive sensors ensure accurate data collection, vital for maintaining optimal operating conditions. Moreover, the device supports a wide range of refrigerants, making it versatile for different applications, from walk-in coolers to commercial refrigeration systems.

The MINI-MATE2 utilizes state-of-the-art technology to enhance efficiency and performance. Equipped with Bluetooth connectivity, it allows for wireless communication with mobile devices, enabling technicians to track readings and receive alerts remotely. This feature not only improves convenience but also helps in quick decision-making, ensuring timely interventions when anomalies are detected.

Another significant characteristic is its robust construction. Built to withstand harsh environments, the MINI-MATE2 features a durable casing that protects it from physical impacts and environmental factors. This resilience ensures longevity, making it a cost-effective investment for any facility.

In addition, the MINI-MATE2 is designed with user-friendliness in mind. Its intuitive interface means that even technicians with limited experience can easily navigate its functionalities. Quick setup and straightforward operation allow for rapid adoption and extensive use in a variety of settings.

Finally, the MINI-MATE2 also includes built-in data logging capabilities. Users can record historical data for analysis and reporting purposes, which is essential for performing trend analysis and identifying potential issues before they escalate. By providing a comprehensive overview of system performance, the MINI-MATE2 empowers users to make informed decisions that can lead to improved energy efficiency and reduced operational costs.

Overall, the Emerson MINI-MATE2 is an indispensable tool for modern refrigeration and HVAC applications, combining cutting-edge technology, user-friendly design, and essential features to support efficient system management.
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