The National 71 is an electric powered carpet puller. It locks into existing direct glued-down carpet with a pull bar and gripper strips, then winds it off the floor with a low-stretch rope, and National says it works over any type of floor surface. It is built for one-person operation and runs on a 1 HP motor.
Specifications
Specs from National's product page and the 71 operating manual (402294 Rev C).
| Spec | Value |
|---|---|
| Width | 29.5" (75 cm) |
| Length | 34" (86 cm) |
| Height | 42" (107 cm) with screen; 10" (25 cm) with screen folded |
| Weight | 185 lb (83.9 kg) |
| Pull speed | 15-22 ft/min (4.6-6.7 m/min) |
| Motor | 1 HP (0.745 kW), 1,725 RPM |
| Voltage | 110 (manual); 115/230, 60 Hz only (product page) |
| Amps (full load) | 12 (manual) |
| Pull rope | National #71-P33 replacement rope only; never use cable |
Maintenance schedule
From National's 71 operating manual (402294 Rev C). The manual gives a pre-operation check, oil intervals for the gear reducer and a set of as-needed items.
| Interval | What to do |
|---|---|
| Before each use | Protective screens and rope guard in place; check pull bar welds and clamps; check pulley wheel, housing, hook and pin for loose or damaged parts; check rope for cuts or fraying; keep gripper strip pins clean (stiff wire brush, in the direction of the pin angle); check wiring and that switches return to off |
| 120 hours (new reducer) | First gear reducer oil change (based on 8 hours per day operation) |
| Every 2,000 hours or every six months | Change gear reducer oil |
| Once per year | Check gearbox oil level at the level screw on the side; top up with Mobil SHC 634 if needed |
| As needed | Inspect power cords, rope, switches and guards; replace the pull rope when it shows reduced diameter, frays or cuts (#71-P33); grease the drive shaft and pillow block bearing so the shaft engages and disengages freely; clean the pull bar clamping bar and check C-clamps; replace damaged gripper strips; cover gripper strips when transporting |
Fluids and lubricants
Lubricants National specifies in the 71 manual.
- Gearbox / gear reducer: Mobil SHC 634 or a similar synthetic gear oil, ISO viscosity grade 460 (National stock #1450-40, 1 quart)
Videos from National
National's start-up video for the 71 and the video from its product page.
Sources
Everything on this page comes from National Flooring Equipment's own published material.
