The EM 4 and EM 8 are single-stage rotary vane lubricated pumps with oil recirculation.
The rotor is keyed directly onto the motor shaft.
The oil tank is provided with a system for separating the oil mists from the exhaust air.
The gas ballast, except for EM4, prevents condensation inside the pump when small quantities of steam are sucked.
The EM 4 and EM 8 pumps are suitable for the evacuation of closed systems or to operate at a constant vacuum included in the following range:
EM 4 – EM 8 from 2 to 300 mbar (absolute)
EM 4 B – EM 8 B from 20 to 850 mbar (absolute)
ACCESSORIES
The following accessories are useful for the installation and for the control of the pump operation parameters:
• External suction filter
• Vacuum gauges / Vacuum switches
• Pressure gauges / Pressure switches
| Spesifikasi | EM4 (50Hz) | EM4 (60Hz) | EM8 (50Hz) | EM8 (60Hz) |
| Pumping speed (m³/h) | 4 | 4.8 | 8 | 9.6 |
| Ultimate pressure with gas ballast (abs.) (mbar) | ≤2 (B) | ≤2 (B) | ≤2 (B) | ≤2 (B) |
| Motor power (kW) | 0.15 | 0.15 | 0.35 | 0.35 |
| Motor speed (rpm) | 3000 | 3600 | 3000 | 3600 |
| Water vapour tolerance (mbar) | – | – | 35 | 35 |
| Water vapour pumping capacity (kg/h) | – | – | 0.1 | 0.15 |
| Lubricant charge (l) | 0.25 | 0.25 | 0.4 | 0.4 |
| Sound pressure level (dB(A)) | 50 | 52 | 54 | 56 |
| Dimensions (L x B x H) (mm) | 236x104x193 | 236x104x193 | 300x164x259 | 300x164x259 |
| Weight (kg) | 8.6 | 8.6 | 11.7 | 11.7 |
| Connections* | 1/8" Gas | 1/8" Gas | 3/8" Gas | 3/8" Gas |