770 - Uncategorized Dormakaba - Free user manual and instructions
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| Product Type | Concealed Door Closer |
| Brand | Dormakaba |
| Model | 770 |
| Dimensions (mm) | 300 x 45 x 30 (body only) |
| Weight (kg) | 1.5 |
| Power Supply | None (mechanical) |
| Closing Force | Adjustable EN 2-4 |
| Backcheck | Yes, adjustable |
| Delayed Action | Yes, adjustable |
| Latching Speed | Adjustable |
| Door Width Max (m) | 1.1 |
| Door Weight Max (kg) | 100 |
| Material | Steel and aluminum alloy |
| Finish | Silver anodized or powder coated |
| Mounting | Concealed in door or frame |
| Standards | EN 1154, CE marked |
| Temperature Range (°C) | -20 to +60 |
| Maintenance | Annual lubrication of pivot points |
| Spare Parts | Available through authorized dealers |
| Repairability | Field replaceable springs and valves |
Frequently Asked Questions - 770 Dormakaba
What is the Dormakaba 770 door closer?
The Dormakaba 770 is a concealed door closer designed for interior doors, offering adjustable closing force and optional functions like backcheck and delayed action.
How do I adjust the closing speed?
Use the adjustment screws on the closer body. Turn the closing speed screw (usually labeled 'SC') clockwise to slow down, counterclockwise to speed up. Refer to the manual for exact location.
What is the recommended maintenance for the 770?
Lubricate the pivot points annually with light machine oil. Check for leaks and ensure adjustment screws are not tampered with excessively.
Can the Dormakaba 770 be used on fire doors?
Yes, when installed correctly with compatible hardware, the 770 meets EN 1154 standards for fire door use. However, always verify local regulations.
What is the maximum door weight and width for the 770?
The maximum door weight is 100 kg and maximum width is 1.1 m for standard applications. Heavier doors may require a different model.
Is the closing force adjustable?
Yes, the closing force is adjustable between EN sizes 2 to 4. This is typically done by swapping the spring or using an adjustment mechanism.
What does the backcheck function do?
The backcheck cushions the door if it is opened violently, preventing damage to the closer or door. It is adjustable via a dedicated screw.
How do I know if my 770 needs repair?
Signs include slow or uneven closing, oil leaks, or excessive noise. If adjustments don't fix it, replace seals or springs using genuine Dormakaba parts.
Can the 770 be installed on left or right hand doors?
Yes, the closer is universal and can be mounted for left or right hand openings by flipping the closer body and adjusting settings.
What is the warranty period for Dormakaba 770?
The standard warranty is 2 years from the purchase date, covering manufacturing defects. Proof of purchase is required.
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USER MANUAL 770 Dormakaba
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Product information
Brand : Dormakaba
Model : 770
Category : Uncategorized