Parker V758P User manual

V758P
Instruction and Installation Sheet PXM
Introduction
Follow these instructions when installing, operating, or
servicing the product.
Installation & Operating Instructions:
The Pilot Exhaust Module (PXM) is installed between an
HA (ISO size 01) valve and a manifold segment. This
valve in conjunction with PXM controls the presence of
14 pilot control pressure in a specific pressure zone in
the manifold. This valve and PXM must be mounted in
the pressure zone.
The pressure zone begins at a segment with the left
gasket pilot ports 12 & 14 blocked. The pressure zone
ends at either the right end plate of the manifold or at the
next segment with the pilot ports 12 & 14 blocked. If a
high flow end plate is the end of the pressure zone, the
12 & 14 ports must be plugged in the end plate.
Minimum operating pressure of the HA valve on the PXM
must be present in the main pressure galley (port 1) of
the manifold segment. Valves with pilots controlled in the
pressure zone must be externally piloted to the 14 pilot
port, and 2 position single solenoid valves must have a
spring return mechanism incorporated in the 12 end
return operator. Any valve in this zone configured as
internally piloted or using sandwich regulator will NOT
have their pilot pressure controlled by the PXM.
These conditions will be seen at the externally piloted
valves with solenoids energized and PXM has exhausted
zoned pilot pressure:
•5/2 Single Solenoid valves (with mechanical
spring) will shift to the 12 position.
•5/2 Double Solenoid valves will remain in the
“last energized state".
•5/3 Double Solenoid valves will shift to the
“center position”.
Lubrication
Factory pre-lubed. If lubricating in service, use Parker
F442 oil or equivalent paraffin based mineral oil with 150
to 200 SSU viscosity @100°F.
CAUTION: Do not use oils that are synthetic,
reconstituted, have an alcohol content or a detergent
additive.
Application Limits
These products are intended for use in general purpose
compressed air systems only.
Operating Pressure Range: Maximum 145 PSIG (1000 kPa)
Ambient Temperature Range: -15°C to 49°C (5°F to 120°F
Installation:
Install Pressure
Switch
1. Remove Plug (3)
and Plug Gasket (2)
from body. Separate
the Plug Gasket (2)
from Plug (3).
Item
Description
1
ISO Pilot Exhaust
Module (PXM) Base
2
Plug Gasket
3
Plug
4
Pressure Switch

V758P
Instruction and Installation Sheet PXM
2. Install Plug Gasket (2) to Pressure Switch (4).
3. Install Pressure Switch (4).
4. Using hex wrench, tighten Pressure Switch (4) –
torque 1.5 to 1.7 Nm (13 to 15 in-lb)
Step 1: Install Tie Rods
1. Install two Tie Rods (5) to
the base, torque finger tight.
2. Adjust tie rod height to
28.5/28.0 mm
(1.12/1.10 inch) as figure
shows.
3. If finger tight height exceeds
28.5 mm (1.12 inch), use
mechanical tightening as
necessary to get the proper
height.
Step 2: Install Pilot Exhaust Module
1. Lay the PXM gasket (6) on the base. Make sure the
two rubber projections are face up and the orientation of
the gasket is correct.
2. Engage both tie rods (5) into mounting holes on PXM
body, lower the PXM body.
3. Carefully engage the electrical plug into the base.
4. Continue to lower the PXM body by carefully engaging
the two rubber projections on the gasket into the
appropriate holes on the PXM body.
5. Press the PXM body by hand firmly. To confirm the
gasket is indeed attached to the PXM body, lift the PXM
body by about one half inch. Both rubber projections
should remain in the holes.
6. Lay the PXM body back on the base.
Step 3: Install Valve
1. Locate valve gasket (7) on bottom of valve body (8).
2. Install valve onto PXM.
3. Carefully engage the valve electrical plug.
4. Using hex wrench, tighten two Screws (9) –torque 1.5
to 1.7 Nm (13 to 15 in-lb)
Step 4: Leakage Check
1. Apply pressure to base and check for audible leakage
at various joints. If any are present, do not operate the
valve, repeat the assembly procedure until satisfied.
Figure 1: ISO Pilot Exhaust Module (Valve and Base shown for
reference only)
Component List
The components listed below are for identification
purposes only. Individual components are not sold
separately.
Item
Description
1
ISO Pilot Exhaust Module (PXM) Base
5
Tie Rods
6
Pilot Exhaust Module (PXM) Gasket
7
HA Valve Gasket
8
HA Valve
9
Mounting Screws
Installation & Service Instructions
V758P
PXM, General Installation
ISSUED: November 2019
Supersedes: None
Doc. #V758P, EN# 190862, Rev -