Fluidwell E Series

E119-P
FW_E119-P_M_v0301-03_EN Page 57
7 MAINTENANCE
Product damage: Only trained and authorized personnel may maintain the unit. Always read and
understand this manual (especially Section 2: Safety[»5]) before proceeding.
If the E119-P is damaged or faulty, it cannot be repaired by the user and must be replaced with an
equivalent certified product. Repairs can only be carried out by the manufacturer or their authorized
agent.
The unit only requires occasional periodic maintenance unless it is used in low-temperature
applications or environments with high humidity (above 90% annual mean). It is the user’s
responsibility to take all precautions to dehumidify the internal atmosphere of the unit in such a way
that no condensation will occur, for example by placing dry silica-gel sachet in the casing.
To prolong the battery lifetime as much as possible, it is also strongly advisable to use only
necessary functions. Consult Section 5.2.4: Saving battery lifetime (type PB)[»20].
The following are suggested periodic maintenance tasks.
7.1 CHECK FOR WEAR OR DAMAGE
1. Check the unit (including cable glands and wiring) for damage or aging symptoms.
2. Check the process accuracy. If necessary, re-calibrate the flowmeter. Do not forget to re-enter
any updated K-factor values.
3. Check the battery indicator for low level; replace battery as necessary – see Section 7.3: Battery
replacement instructions[»57].
7.2 CLEAN UNIT
1. Soak a lint-free cloth with mild soap solution or fresh water.
2. Clean the complete unit (including control panel) by gently wiping with the cloth taking care that
no moisture enters the housing.
7.3 BATTERY REPLACEMENT INSTRUCTIONS
Explosion risk: never open the housing when explosive atmosphere is present.
Safety risk: do not open an installed enclosure when circuits are alive.
Pollution risk: prevent any contamination or dirt to enter the enclosure or mounting threads.
USE OF UNAPPROVED OR DAMAGED BATTERIES CAN INVALIDATE EXPLOSION SAFETY
● Handle (lithium) batteries with the utmost care to prevent a short circuit or damage. A damaged
battery is unsafe and can cause (serious) injury to persons. Do not recharge, crush,
disassemble, incinerate, heat above its rated temperature or expose contents to water.
● Only use batteries that are approved for use in hazardous area by the manufacturer.
DO NOT EXCHANGE. Using the wrong type of battery can pose a SERIOUS RISK.
Approved batteries can be ordered from your supplier.
Follow the instructions shown in Section 6.2.3: Opening, assembling and closing the unit[»42], to gain
access to the MEM and BSM/RSM.