GLD-280A

Two-stage / terminal only (without cord) / Without thermal protector

Features

  • The two-stage exhaust system has lower pressure (good vacuum) than the one-stage exhaust system.
  • Low noise and low vibration.
  • The backflow prevention mechanism prevents oil from flowing back to the vacuum chamber when it is stopped due to a power failure.
  • The exhaust speed is stable due to the installation of the forced oil supply mechanism.
  • Operation from atmospheric pressure is possible.
  • Easy connection by internal components knock pins and maintenance by flange motor.

Specification

Unit 50Hz 60Hz
Actual pumping speed
L/min 280 336
Ultimate pressure※1
G.V.Closed
Pa 0.67
G.V.Open
6.7
Motor※2
Three phase, 200-240V/380-460V, 750W, 4P
Full load current
A 3.6 (200V), 3.7 (220V)
4.0 (230V), 4.2 (240V)
2.1 (380V), 2.3 (400V)
2.4 (415V)
3.3 (200V), 3.2 (220V)
3.2 (230V), 3.2 (240V)
1.9 (380V), 1.9 (400V)
1.9 (440V), 2.0 (460V)
Oil capacity
mL 700~1,100
Recommended oil
R-7
Weight
kg 34.5
Inlet port diameter
mm KF-25
Ambient temperature
7~40
External dimensions
mm 181(W)×536(L)×269(H)
※1:Ultimate pressure is measured by Pirani gauge.
(In the case of measurement by McLeod gauge, the value is lower by an order of magnitude for pumps with an Ultimate pressure of 1.3 Pa or less.)
※2:Power supply plug and Power supply code are not included.