This manual describes operation, installation, and maintenance of the Ingersoll Rand 2 inch diaphragm pump.
The 666250-XXX-C is a 2‑inch pneumatic double‑diaphragm pump offered by Ingersoll Rand. It supports a wide range of fluid compatibilities and features an anti‑stall design with modular air‑motor and fluid sections.
The manual covers safety precautions, installation steps, detailed disassembly and re‑assembly procedures for both fluid and air sections, a complete parts list, lubrication guidelines, and fault diagnosis to help technicians keep the pump operating reliably. This manual is written in Chinese.
| Weight | 65.15 lb (29.55 kg) |
|---|---|
| Maximum inlet pressure | 120 psi (8.3 bar) |
| Maximum outlet pressure | 120 psi (8.3 bar) |
| Maximum flow rate (pump inlet) | 172.0 GPM (651.0 L/min) |
| Maximum particle size | 1/4" (6.4 mm) diameter |
| Noise level at 70 psi | 85.3 dB(A) |
Apply Key‑Lube grease to all O‑rings, O‑ring cups, and related components before re‑assembly.