Q1: What exactly is the NL10MF compressor?
A1: Fully enclosed reciprocating (piston) single-phase AC compressor, R134a, medium-temperature application (MBP).
Q2: What are the differences between the start-up methods RSIR and CSIR?
A2: RSIR: PTC starting relay, low starting torque (LST), suitable for capillary systems and scenarios where the shutdown pressure energy is balanced.
Electromagnetic starting relay + 125 µF / 220 V starting capacitor, high starting torque (HST).
Q3: What's the internal principle of NL10MF in one sentence?
A3: The suction oil from the shell first flows through the motor to cool the windings. The POE oil is flung to the friction surface by the crankshaft, and the valve plate controls the unidirectional flow.
Q4: Can NL10MF be used as a -25 ℃ cryogenic machine?
A4: Not recommended. - At -20 ℃, the cooling capacity has dropped to over 200 watts during evaporation; for the deep freezer, an LBP machine or an R404A/R290 model should be used.
Q5: What should be noted when changing to NL10MF?
A5: Power supply 208-230 V 60 Hz
Is the starting form RSIR or CSIR (with different models of starting relay and capacitor)
Refrigerant R134a + POE oil
Suction/discharge/process pipe diameter: Suction ≈ Ø 9.7mm, discharge/process ≈ Ø 6.5mm (inner diameter of copper pipe).
Before filling, evacuate the air, check for leaks, and determine the filling amount according to the system length (not directly fill up to 600g).
Q6: Is it normal for frost to form on the suction pipe to the shell?
A6: Abnormal. For the NL10MF fully enclosed machine, liquid strike occurs when liquid R134a enters the cylinder → the valve plate, connecting rod, and gasket are damaged.
Treatment: Reduce the expansion valve opening, check the charging quantity, inspect the evaporator fan, and before shutting down, allow the compressor to run for a few more minutes to draw the refrigerant back.
