Two-stage / with cord, and switch/with thermal protector
Features
Small size but high exhaust speed.
Compact size suitable for device integration.
The magnet coupling structure eliminates oil leakage from the shaft seal and achieves long life.
There is no oil contamination in the vacuum chamber due to the installation of the check valve directly below the intake pipe.
Low noise and low vibration.
Corresponds to diversification of power cord by power cord inlet and outlet.
The exhaust speed is stable due to the installation of the forced oil supply mechanism.
Operation from atmospheric pressure is possible.
Easy connection with flanged parts and connection by knock pins on internal parts.
Specification
| Unit | 50Hz | 60Hz |
Actual pumping speed | L/min | 30 | 36 |
Ultimate pressure※1 | Pa | 0.67 |
Motor※2 |
| Single phase, 100～120V, 100W, 2P,Capacitor run
Single phase, 200～240V, 100W, 2P,Capacitor run |
Full load current | A | 1.85 (100V), 1.80 (110V)
0.94 (200V), 0.84 (240V) | 1.89 (100V), 1.71 (120V)
1.02 (200V), 1.03 (240V) |
Oil capacity | mL | 370 |
Recommended oil |
| R-2 |
Weight | kg | 9.3 |
Inlet port diameter | mm | KF-16 |
Outlet port diameter |
| G3/4 |
Ambient temperature | ℃ | 7～40 |
External dimensions | mm | 120(W)×288.5(L)×163(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.
Corresponding certificate／Voltage
| Model | Applicable standard※ | ＣＥ
Declartion of confirmity | 1Φ
100V | 1Φ
115V | 1Φ
200V | 1Φ
220V | 1Φ
230V |
| GHD-031 | － | － | ●
（100～120V） | ●
（100～120V） | ○
（200～240V） | ○
（200～240V） | ○
（200～240V） |
| GHD-031A | TUV、cTUVus | ● | ●
（100～120V） | ●
（100～120V） | － | － | － |
| GHD-031B | TUV、cTUVus | ● | － | － | ●
（200～240V） | ●
（200～240V） | ●
（200～240V） |
●：Standard、○：Option、－：Not Available
※TUV Certification: A high-quality product that complies with European standards as assessed by an international third party that conducts product safety testing and certification.
※cTUVus Certification: A high quality product that complies with Canadian and US standards as assessed by an international third party that conducts product safety testing and certification.
Caution
１ | Oil is deteriorated with operating, and becomes the factor of performance shortage.
A decrease and the dirt of oil are confirmed, and please regularly add and replace it. |
２ | If operation is performed at high pressure, oil mist is generated at the exhaust side. |
３ | There is a risk of explosion. Never block the outlet or operate the pump with equipment mounted at the outlet side that blocks the passage of gas.
Otherwise, the internal pump pressure increases causing the pump to explode, the oil level gauge to protrude or the motor to be overloaded. |
４ | This motor houses an automatic returning thermal protector, which may be activated in case of trouble.
The motor will restart automatically when the temperature goes down.
If the thermal protector is activated, switch off the power immediately for safety reason. |
Dimension drawing
> CAD data download（DXF）
Pumping Speed Curves
Optional parts
Item | Model | Remarks |
Power cable | With 100-120V plug | Unplug preventive hardware |
Power cable | 100-120V without plug | Unplug preventive hardware |
Power cable | 200-220V without plug | Unplug preventive hardware |
Power cable | 200-220V with plug (for Europe) | Unplug preventive hardware |
Unplug preventive hardware | 100-120V | Single item |
Unplug preventive hardware | 200-240V | Single item |