Ashcroft 5503 Series Manual de instrucciones de instalación y mantenimiento - Página 5
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Installation and Maintenance Instructions for
5503 Differential Pressure Gauges
7.4.3 Contact function
Function 1: Close contacts with the indication rising in a
clockwise direction.
Function 2: Open contacts with the indication rising in a clock-
wise direction.
Contact assignment:
1st contact left indicator.
2nd contact middle indicator.
3rd contact right indicator.
Please refer to the electric contacts datasheet for further
details.
7.5 Subsequent relocation of the gauge (by the customer)
Recommendation: Do not remove the pressure
gauge from one pressure monitoring location to
another, as there is a risk of the process media
being mixed, with unforeseeable chemical reactions.
8 SERVICING
The device is maintenance-free. However, to ensure reliable
operation and a long lifetime for the device, we recommend
that it is checked regularly.
8.1 Safety
When undertaking servicing work on the device, the pressure
lines must be depressurized, the electrical connections
isolated, and secured against being switched back on.
8.2 Gauge performance and recalibration
The check on function and recalibration is carried out at regular
intervals, depending on the application. The precise testing
cycles should be adjusted in line with the operating conditions
and ambient conditions. In the event of various device
components interacting, the operating instructions for all other
devices should also be taken into account.
• Check on display.
• Check on function, in conjunction with downstream components.
© Ashcroft Inc. 2019, 250 East Main Street, Stratford, CT 06614-5145, USA, Tel: 203-378-8281, Fax: 203-385-0357, www.ashcroft.com
All sales subject to standard terms and conditions of sale. 5503_gauge_i&m_RevA_07-18-19
• Check of pressurized connection pipes for seal condition.
• Check of electrical connections
8.3 Cleaning and maintenance
Cleaning is carried out using a non-aggressive cleaning agent,
with the ventilation valve closed and respecting the protection
category of the device.
FAULTS
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9.1 Safety
Defective or faulty pressure gauges put the operational safety
and process safety of the plant at risk, and can lead to a risk or
injury to persons, the environment or the plant.
9.2 In the event of failure
All defective or faulty devices must be taken out of service.
If a repair is required, the device must be sent directly to our
Repairs Department. Please contact your Ashcroft distributor or
Ashcroft directly for complete instructions.
9.3 Indications of failure
• Jerky or random movement of the pointer
• Pointer does not set to zero with pressure applied to both
sides
• Indications that the measurement system seal (diaphragm)
has been breached (discoloration to dial display or of filling
liquid)
• Bent or loose pointer
• Cracked window
• Leaks when the device is filled
• Damage to housing
In these instances, repair or replacement of the pressure gauge
is always required.
10 REMOVAL, DISPOSAL
10.1 Safety
Residues of measuring media in and on
removed gauges can constitute a risk to people,
the environment and equipment. Adequate
precautionary measures must be adopted. If
necessary, the devices must be cleaned thoroughly
(see advice in safety data sheets).
10.2 Removal
• When servicing the gauge, the pressure lines must be
depressurized, the electrical connections isolated and
secured against being switched back on.
• Dismount the gauge using a suitable tool.
10.3 Disposal
Please help to protect the environment and
dispose of or recycle the devices and components
used in accordance with the applicable
regulations.
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