REFCO 4688291 REFVAC RC Wireless Digital Vacuum Gauge Instruction Manual

REFVAC-RC
REFVAC
4688291 4688541
4688442 4688540
Instruction Manual
Digital vacuum gauge

INTRODUCTION

Congratulations on your purchase of this device. The REFCO REFVAC or REFFVAC- RC is a high precision digital vacuum gauge.
The latest manual can be downloaded from www.refco.ch.

GENERAL INFORMATION

Before you start working with the REFVAC or REFVAC-RC, please read the operating instructions carefully. They contain important information for the successful operation, maintenance and disposal of the digital vacuum gauge.

Conformity

| This device complies with the relevant European directives. The Declaration of Conformity is available from the specified contact details or on the REFCO website.
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| This device complies with the applicable UK legislation. The Declaration of Conformity is available from the specified contact details or on the REFCO website.
| This device complies with Part 15 of the FCC Rules. It should be operated under the following conditions: (1) This device may not cause harmful interference, and (2) This device must be  able to withstand interference, including interference that may result in errors during  operation.
FCC ID: XPYNINAB1
IC| This device complies with Industry Canada’s licence-exempt RSS standards.
It should be operated under the following conditions:
(1) This device may not cause harmful interference, and (2) This device must be able to  withstand interference, including interference that may result in errors during operation.
IC ID: 8595A-NINAB1
**| RCM: Regulatory Compliance Mark
This device complies with the requirements of the RCM regulations.
RoHS| RoHS: Restriction of Hazardous Substances
This device meets the requirements of the RoHS EU directive.
RoHS 2011/65/EU including 2015/863/EU The device does not contain any prohibited substances above the maximum permissible values.
REACH**| In accordance with Article 33 of REACH Regulation 1907/2006, we confirm that this device  and its packaging complies with Article 57 of REACH Regulation 1907/2006.
This device and its packaging do not contain any of the SVHC specified in the current candidate list (Article 59) at concentrations above 0.1%.

Important safety instructions
Please read and follow all safety instructions carefully.
Explanation of symbols:

| Warning!
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| …indicates a possible dangerous situation that can lead to serious injury if not avoided.
Safety instructions:
| Attach the digital vacuum gauge to the system only after the refrigerant has been extracted from the  refrigeration circuit. Avoid contact with refrigerants as far as possible.
| The digital vacuum gauge may be loaded with a maximum overpressure of 30 bar.
| Do not expose the digital vacuum gauge to rain or use it in a damp or wet environment.
| Always wear protective goggles and gloves when working with the digital vacuum gauge.

| REFCO products are specifically designed and manufactured to be handled by trained refrigeration  technicians. Due to the high pressures and the chemical and physical properties of the gases used in  refrigeration systems, REFCO declines all responsibility and liability in case of accidents, injuries and death.
| REFCO expressly states that the products must only be
used by professionally trained experts. No use by children
or unqualified persons.
| The digital vacuum gauge must not be used in EX zones.

Intended use
The digital vacuum gauge is designed to measure vacuum conditions in mobile and stationary refrigeration systems and heat pumps. This REFCO product may only be used by trained refrigeration technicians. The device assists the technician during the  evacuation process of a system. Furthermore, the vacuum tightness of a system can be checked with the vacuum meter.

SPECIFICATION

±10% of reading:
From 10’000 to 30’000 micron
Indication:
From 30’000 micron to atm
Resolution| 0.1 micron (<149.9 micron)
1 micron (150 — 1’499 micron)
10 micron (1’500 — 7’490 micron)
100 micron (7’500 — 19’900 micron)
10’000 micron (20’000 — 760’000 micron)
Pressure Scale| inHg I mTorr I Torr I Pa I micron I mbar I psi
Pressure Range| atm – 0 micron
Working Pressure| 30 bar
Temperature Range| -20 °C — 50 °C
Gas Connection| 1/4″ SAE
Battery| 3xAAA I 3xLRO3
Battery-lifetime| >100h
Ingress Protection| IP42
Packaging| Blister
Material| ABS I PC I Brass I FR-4
Colour| yellow (RAL 1023)Igreen (RAL 6026)
Wireless communication| Yes
Signal range| Up to 100m

• REFVAC-RC only

PRODUCT AND PART DESCRIPTION

4.1 PRODUCT

4.2 BUTTONS AND NAVIGATION

| |
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ON/OFF Button
Switch the device on or off

| Navigation Button
Navigate through the screens, menu  items or settings|

Enter Button
Select the settings to enter the menu

TRANSPORT, PACKAGING AND STORAGE

5.1 TRANSPORT
The REFVAC is packed in a blister pack to protect the parts. Protect the device from vibration and scratching during transport. After unpacking the device from the blister casing, keep it in a tool case or tool bag. The storage conditions must also be maintained  during transport.

5.2 PACKAGING
The device is delivered in a blister pack. The REFVAC-RC has a protective textile pouch to protect the digital vacuum gauge.

5.3 STORAGE
The storage temperatures (Section 3.0) must be maintained and the plastic case must be closed.

COMMISSIONING AND FUNCTIONS

6.1 COMMISSIONING
Slide the battery cover upwards and pull out the contact break. Observe the correct polarity of the batteries. If you will not be using the REFVAC for a long period of time, remove the batteries from the battery compartment.

6.2 FUNCTIONS

Switch on / off| Pressing briefly switches the device on and pressing  longer switches it off again.
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Change rate
function| Below 75’000 micron or 100 mbar, a vacuum change rate is indicated. It can give a further indication of how tight a refrigeration circuit is.
Reference
pressure function| Press and hold  on the vacuum hold display. This sets the current pressure as the reference  pressure. The difference to the reference value is displayed. Press and hold again to remove the reference pressure.
Alarm function
| An alarm value can be set in the menu. If an alarm is set, the icon is displayed in the status bar.  If this value is exceeded or undershot, the display flashes. The alarm is acknowledged by pressing any key. With a REFVAC- RC, any alarm value can be set via the REFMESH App.
Pressure/vacuum units
| The following units can be set: mbar, micron, Torr, mTorr, psi, inHg and Pa
Automatic shut off
| If the automatic switch-off is activated, the device switches off after 30 minutes if no user interaction has taken place during this period.
Wireless connection
| If the wireless connection is switched on, the REFVAC-RC can be connected with a REFMATE  or with the REFMESH app. If the connection has not yet been established, the icon in the status  bar flashes. As soon as a connection is established, the icon is constantly displayed.
Info
| Displays the specific device information after pressing .
Exit menu
| The menu is exited by  pressing the back icon or if there has been no user interaction for 15  seconds, the menu is exited automatically.
Power supply| Instead of AAA-battery’s, an alternative power supply can be used with a USB Micro-B cable.
For long-term measurements, a power supply is recommended, for which a power bank is suitable. If the REFVAC or REFVAC-RC is powered via USB, the status bar will show USB instead of the battery symbol.
Long-term logging| A REFVAC-RC can perform a long-term measurement together with a REFMATE or REFMESH  App.
Automatic switch-off must be deactivated for the long-term measurement.
Firmware-update| By holding
and then switching on with
, a FW update can be performed using
the instructions on the REFVAC screen. The
latest firmware version is available in REFMESH
App.
Energy savingmode| After 2 minutes without user interaction, the OLED screen is switched off and then flashes briefly every 30s. The energy saving mode is ended by pressing any key. After another 3 minutes, the vacuum value is only renewed every minute. If the device is powered via USB, the REFVAC or REFVAC- RC will not go into energy saving mode.

This function is not available for the devices with the article no. 4688541 and 4688540

MAINTENANCE

The digital vacuum gauge requires maintenance when used regularly:
Replace Filter:
The sinter filter can be unscrewed with a slotted screwdriver. Replace the filter whenever it becomes visibly dirty or every 3 to 4 months, depending on use.

Cleaning:
Clean the screen and the housing surface with a cloth and cleaning agent.
Do not use corrosive cleaning agents or solvents to clean the unit. Weak household cleaners and mild detergents may be used.

Cleaning the Vacuum Sensor
It may happen that in rare cases, the vacuum sensor is contaminated with oil, and cleaning is then required.
The following cleaning process must be followed:

1. Remove battery

2. Remove sinter filter

3. Turn the unit upside down with the vacuum connector facing up.

4. Put a few drops of isopropanol into the sensor housing.

5. Place a finger over the connector and close the sensor with it.

6. Shake the instrument for a few seconds.

7. Remove finger and let alcohol out of sensor, shake.

8. Repeat steps 4 to 7 twice.

9. Allow the sensor to dry in ambient air for at least 1.5 hours or draw vacuum for more than 2 minutes.
   IMPORTANT: It is imperative that the vacuum sensor is dry!

10. Re-fit the sinter filter. It is recommended to use a new sinter filter.

11. Now the batteries can be inserted and the instrument can be switched on again

Periodic cleaning of the vacuum sensor is not recommended.

TROUBLESHOOT

| Problem| Action
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Measuring| The Display shows OOR (Out Of Range).| Reduce the pressure to the Device.

GUARANTEE

Your new REFVAC has been developed in accordance with the latest findings in occupational physiology and ergonomics. REFCO Manufacturing Ltd has been certified according to DIN EN ISO 9001:2015. Regular quality control checks as well as an accurate  manufacturing process guarantee reliable functionality and are the basis for the REFCO guarantee, in accordance with the General Terms and Conditions of Sale and Delivery applicable on the day of delivery. Excluded from the guarantee are damage caused by  obvious maltreatment and wear and tear.

RETURN DISPOSAL

The REFVAC has been developed for long-term use.
Attention was paid to energy saving and environmental compatibility at the material procurement and production stages. REFCO embraces its responsibility towards the environment, and has therefore been certified in accordance with DIN EN ISO 14001:2015.  When decommissioning the device, the user must follow local disposal regulations. The housing is made of ABS and PC.

SPARE PARTS AND ACCESSORIES

REFCO Manufacturing Ltd.
Industriestrasse 11
6285 Hitzkirch – Switzerland
+41 41 919 72 82
info@refco.ch
www.refco.ch

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