McElroy Pit Bull 250, Руководство оператора

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Hydraulic Cylinders
HIGH FORCE hydraulic carriage cylinders are painted green.
High force cylinders are used when higher interfacial pressures
are required, when handling heavy wall pipe, or when large
drag factors need to be overcome.
MEDIUM FORCE cylinders are painted orange and have
approximately half the total effective piston area as High Force
cylinders. The cylinders move faster and are normally used for
medium density pipe and when lower interfacial pressures are
used.
LOW FORCE cylinders are painted yellow. These cylinders should
be selected when fusing pipe with a very low interfacial pressure
(22 psi).
IMPORTANT: Use the correct total effective piston area to calculate the
gauge pressure.
TX01270-3-30-11
Overview
PH
02
68
2-
3-8-0
4
Hydraulic Manifold Block
Mounted on this block are a carriage directional control valve, a
pressure reducing selector valve, three pressure reducing valves,
and a 1500 psi gauge.
A)
The carriage control valve, mounted on the top of the
manifold, determines whether the carriage is moving left, right,
or is in neutral.
B) A 1500 psi gauge is mounted on top of the manifold.
C) The selector valve, mounted on the front of the manifold,
selects a reduced pressure from one of the pressure reducing
valves.
Each pressure reducing valve is labeled with a different function:
D)
The top valve adjusts facing pressure to a maximum of 400
psi.
E) The middle valve adjusts heating pressure to a maximum of
400 psi.
F) The bottom valve adjusts fusion pressure to a maximum of
1500 psi.
G) DataLogger port
TX00357-1-12-11
CD0013
8H-1-12
-11
PH00
79
7-
4-10
-9
6