Specifications
| Frequency | 60.0 Hz |
|---|---|
| Standby power | 20 kW |
| Standby kVA | 20 |
| Prime power | 19 kW |
| Emissions | EPA Tier 4i |
| Oil capacity | 8.1 L |
Engine
| Oil capacity | 8.1 L |
|---|---|
| Coolant capacity | 11.0 L |
| Displacement | 2.2 L |
| Aspiration | N/A |
| Rated speed | 1800 rpm |
Common questions
What size generator is the Magnum MTT20?
The Magnum MTT20 is rated 20 kW standby (20.0 kVA).
Which engine powers the Magnum MTT20?
The Magnum MTT20 is powered by the Isuzu 4LE1NYGV-03G engine.
How much oil does the Magnum MTT20 take?
The Isuzu 4LE1NYGV-03G engine in the Magnum MTT20 has an oil capacity of 8.1 liters.
What is the coolant capacity of the Magnum MTT20?
The Magnum MTT20 cooling system holds 11 liters (2.9 US gallons) for the engine, per the manufacturer specification sheet.
What is the continuous rating of the Magnum MTT20?
The Magnum MTT20 is rated 19 kW prime (19 kVA), against 20 kW standby.
Troubleshooting
6Symptoms & remedies
| Symptom | Remedy |
|---|---|
| Mast light is too hot. | Allow light to cool 10-15 minutes before restarting. |
| Faulty bulb connection. | Check that the bulb is tight in the socket. |
| Bulb broken. | Check for broken arc tube or outer bulb jacket, broken or loose components in bulb envelope or blackening/deposits inside tube. |
| Mast lights off and ballast indicators on control panel are off. | 1. Check the connections inside the control box and inside each ballast box. 2. Generator output incorrect. Check the incoming voltage to the ballast by checking the available voltage on the GFCI receptacle. Incoming voltage should be 120V +/- 5V. If voltage is incorrect, the engine speed may need to be adjusted or generator may require service. 3. Low transformer output. The voltage from the transformer should read approximately 400VAC as the light 'strikes' (induces an arc), then drop and slowly rise back up to stabilize at 240-260VAC. On quick disconnect models, measure across the junction box terminals when the light is unplugged. On hard wired models, remove the mast junction box cover and insert the wire probes into the connector blocks for the light and ground. If proper voltage is not achieved, perform capacitor check to determine if the capacitor or coil needs to be replaced. |
| Mast lights on but the light output is low. | 1. Fixture and/or lens is dirty. Clean reflective surface inside fixture and both inside and outside surface of glass lens. Use mild soap and water to clean lens. Other chemicals may have an adverse effect on the glass. 2. Bulb worn due to normal use. Replace bulb. 3. Check the mast coil cord, mast junction box and mast light connections. 4. Generator output incorrect. Check the incoming voltage to the ballast. Incoming voltage should be 120V +/- 5V. If the voltage is incorrect, the engine speed may need to be adjusted or the generator may require service. 5. Low transformer output. The voltage from the transformer should read approximately 400VAC as the light 'strikes' (induces an arc), then drop and slowly rise back up to stabilize at 240-260VAC. On quick disconnect models, measure across the junction box terminals when the light is unplugged. On hard wired models, remove the mast junction box cover and insert the wire probes into the connector blocks for the light and ground. If proper voltage is not achieved, perform capacitor check to determine if the capacitor or coil needs to be replaced. |
| LOW OIL PRESSURE SHUTDOWN | 1. Check the level of the engine oil with the dipstick. The engine controller will shut the engine down when the oil pressure is less than 20 psi (138 kPa). Add oil if required. 2. Visually inspect the engine for oil leaks. 3. If the oil level is good, restart the unit and verify the loss of oil pressure. Shut the engine down immediately if the oil pressure value does not read 5 psi (34 kPa) within five seconds. 4. Check the oil pressure sender. To identify corrective action, refer to the troubleshooting section of the engine operator’s manual provided with the unit. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing. Full Magnum MTT20 troubleshooting guide (9 entries) →
Fuel consumption
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| Prime | 100% | 6.81 | 1.8 |
| Standby | 100% | 4.92 | 1.3 |