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Site Preparation and Installation
21 Liebert
®
Mini-Mate2
™
Total refrigerant = Units and Lines*
Quick Connect Fittings
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 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,
O.D., in.
R-407C, lb/100 ft. (kg/30m)
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)
NOTE
When hard piping is used, complete all piping and evacuate lines before connecting
quick connects.
Table 13 Refrigerant quick connect sizes and torque
Size O.D.
Cu
Coupling
Size
Torque
lb-ft
1/2” #10 35-45
1-1/8” #12 50-65