Maintenance And Service; Troubleshooting; Maintenance And Service Procedures; Panel/Chassis Removal And Installation - Condec UPC5000 Operation & Maintenance Manual

4.0

Maintenance and Service

This section outlines the mechanical and basic electrical repair procedures for the UPC5000/UPC5010.
4.1

Troubleshooting

Use Table 4-1 below for information on troubleshooting the UPC5000/UPC5010.
Symptom
No lit display
Display slowly decreases over time
Display does not respond when Vernier
knob is turned
Display increases or decreases when
COARSE (Pressure) or VENT valves are
closed
Unit will not stay in CAL; display shows
"o" and reads a high value at zero PSIG.
Low battery indicator on display
illuminates when unit is powered
No display when in battery mode after
charging
Display will not zero
Display shifts
Gas escapes when external supply
pressure is bled
4.2

Maintenance and Service Procedures

The repair procedures cover the major components and sub-assemblies which are critical to the proper
functioning of the calibrators and that need periodic maintenance over the life of the unit. Although some
mechanical sub-assemblies could be replaced without venting cylinder it is not recommended.
Only those persons who are formally trained as skilled technicians should attempt to repair these units.
Caution
! All safety precautions should be observed due to the presence of electrical components and
high-pressure cylinders. Unit must always be unplugged from power source.
4.2.1

Panel/Chassis Removal and Installation

UPC5000 Removal
Tools required: Phillips screwdriver
1. Loosen and remove the eight screws (PN 14862) that secure the panel assembly to the enclosure.
2. Lift the panel and chassis by grasping the regulator knob and test port and grasping under the panel
edges. Ensure that the wire harnesses do not catch and snag.
3. Gently set the panel/chassis assembly on a bench top. It can be rested on the panel bottom and chassis
edge with the panel tilted at an angle from its vertical.
14 UPC5000/UPC5010 Operation & Maintenance Manual
Problem
Unit will not energize
Leak in system
No Vernier control
No Pressure or Vent control
Transducer over-pressurized
Low or no battery power
Battery will not hold charge
Display will not zero
Transducer drifts or possible over
pressure
Nitrogen cylinder will not remain charged
Table 4-1. UPC5000/UPC5010 Troubleshooting
Remedy
Check fuse, check power source, check
power switch
Check all compression and pipe fittings
with snoop, bottle of liquid leak gas
detector (PN 64781)
Readjust isolation valves on Orion;
replace O-ring on Vernier piston
Replace valve seats or O-rings in valves;
check valve needles
Replace transducer
Re-charge battery, check power supply
charging voltage
Replace battery
Perform a ZERO/SPAN calibration
Replace transducer
Remove inlet check valve; clean or
replace