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
