Maintenance and Service
36 | 44 Instruction Manual VACTEST PPP 700 D_EN_en
7 Maintenance and Service
DANGER
Danger of possibly contaminated parts!
Contaminated parts can cause personal injuries.
● Inform yourself regarding possible contamination before you start working.
● Be sure to follow the relevant instructions and take care of necessary protective measures.
CAUTION
The unit is not prepared for customer repair!
Defective sensor heads can be exchanged on-site by calibrated replacement sensors.
NOTE
Malfunction of the unit which is caused by contamination or wear and tear is not covered by
warranty.
The unit requires no maintenance. External dirt and soiling can be removed by a damp cloth.
When returning the gauge for service please fill out a declaration of contamination and include it in
the shipment. This document is mandatory to protect our service staff.
7.1 Errors and Malfunctions
Problem Possible Cause Correction
High measurement error Wear and tear, contamination,
extreme temperature
Replace sensor or send unit to
repair
Pirani zero adjustment not
possible
Measurement error exceeds
adjustment range
Replace sensor or send unit to
repair
Display OR Pressure over range (Pressure is above range limit)
Display UR Pressure under range (Pressure is below range limit)
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