Frequently Asked Questions
1. WHY PFLOW?
The reason for choosing Pflow can be summed up easily in one word: COMMITMENT. Pflow is committed to the customer's needs and the VRC industry.
2. WHAT TYPE OF VERTICAL CONVEYING SYSTEMS DOES PFLOW OFFER?
Hydraulic and mechanical. Both straddle and cantilever are available, along with four post and modular designs.
3. WHERE WOULD A HYDRAULIC OR MECHANICAL LIFT BE USED?
The hydraulic series of lifts is the least expensive of the two to purchase and install. It can be used with loads from 1000 to 6000 lbs. It can have carriage sizes up to 10 ft. x 10 ft. and vertical lift up to 22 ft. with a maximum of two stops/level. A mechanical lift is used where larger carriages are needed, where a vertical rise is greater than 22 ft. or where 3 or more stops/levels are required. We suggest discussing your application with a Pflow representative or authorized dealer to ensure the proper lift is specified.
4. HOW IS THE LIFT SUPPORTED?
The carriage is raised between two columns. The columns need to be lagged to a ground level or surface. The columns are required to be attached at the upper level and typically attached to the floor's support structure.
5. WHAT IS THE LOWERED HEIGHT OF THE CARRIAGE?
The profile of a typical carriage is 2-1/2" to 4-1/4" when mounted on the surface. When a flush first level transition is required, the depression can range from a typical 3" - 6" and up.
6. WHAT SIZE LIFT CAN BE FIT INTO AN OPENING?
This varies by model. Please refer to CAD DRAWINGS on this site for exact dimensions.
7. HOW MUCH ROOM DOES THE POWER UNIT TAKE UP?
The motor pump for a typical hydraulic lift is 20" wide x 30" long x 20" high. It can be mounted anywhere within 15' of the lift. On a mechanical lift, the power unit is located at the top of the two guide rail columns. It requires approximately 3' of space above the carriage load height.
8. WHAT IS A MEZZANINE BACKSTOP SAFETY PANEL?
A mezzanine backstop safety panel is used on applications where there is a snap chain or drop bar, but no railing on the backside of the carriage at the upper level. The panel attaches to the guide rail columns of the lift at the upper level. Its purpose is to enclose the back of the carriage so that there is no possibility of someone walking onto the lift and falling off and to help prevent product from falling while loading at the upper level.
9. ARE SAFETY GATES AND ENCLOSURES REQUIRED?
In order to meet OSHA, ANSI and common sense standards, anywhere a person can come in contact with the lift, an 8' high enclosure is required. Where the lift is to be loaded, a gate with an interlock is required.
10. WHAT IS AN INTERLOCK?
An interlock prevents a gate from being opened unless the lift is present at that level. The interlock also prevents the lift from running when the gate or door is not closed.
11. ARE CONTROLS PROVIDED?
All electrical components needed to make the lift work are included with the lift. The standard controls are self-maintained contact controls. Constant pressure or dead-man controls are also available.
12. WHAT IS THE LEAD TIME FOR A LIFT?
Approval drawings are prepared and sent out within 2 weeks after the receipt of an order. The lift is shipped 6 to10 weeks after a signed approval drawing is returned to Pflow.
13. HOW IS THE LIFT SHIPPED?
The lift is shipped via common carrier. The components in the shipment are as follows:
b. Two guide rail columns approximately 20 ft. (depends on vertical rise and splicing).
c. 4' x 4' x 3' parts crate; for mechanical units, a drive base.
14. HOW DIFFICULT IS INSTALLATION?
The basic steps for installing a lift are as follows:
a. Columns are set in place.
b. Carriage is placed between the columns.
c. Mechanical lifts, the drive base must be raised to the top of the columns.
d. Gates and enclosures are assembled and set in place.
e. Wiring of electrical components.
15. WHAT MAINTENANCE IS REQUIRED?
To maintain peak performance of the lift:
a. Keep all moving components greased.
b. Keep all bolts tightened.
Standard preventative maintenance of the lift is well within the capabilities of a plant maintenance person.