Site Preparation and Installation
23 Liebert
®
Mini-Mate2
™
Refrigerant Charge Requirements
Total R-407C refrigerant charge will be required only if units are evacuated during installation or
maintenance. For safe and effective operation, refer to pressures in 5.5.3 - Piping Connections and
Coolant Requirements.
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 14 for torque requirements.
Table 13 Refrigerant charge
Model #
Charge R-407C
oz (kg) 60Hz 50Hz
MM*24E/K — 7 (0.198)
MM*36E/K MM*35E/K 7 (0.198)
MC*24AL_H7 — 134 (3.80)
MC*36AL_H7 MC*35AL_H7 213 (6.04)
MC*26W_H7 — 41 (1.16)
MC*38W_H7 MC*37W_H7 54 (1.54)
PFH027-_L7 — 134 (3.80)
PFH027-_H7 — 213 (6.04)
PFHZ27-_L7 — 213 (6.04)
PFH037-_L7 PFH036-_L7 213 (6.04)
PFH037-_H7 PFH036-_H7 426 (12.08)
PFHZ37-_L7 PFHZ36-_L7 426 (12.08)
NOTE
When hard piping is used, complete all piping and evacuate lines before connecting quick
connects.
Table 14 Connection sizes and torque
Size OD Cu Model Tons Coupling Size Torque Ib-ft.
3/8 2 and 3 #6 10-12
5/8 2 and 3 #11 35-45
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