General Maintenance; Electrical Protection; Tank Fill - Bosch ACS 753 Repair Instructions

Introduction

General Maintenance

Do not use abrasive cleaning agents, solvents
(petrol, diesel, etc.) and coarse workshop cloths
to clean the machine. Clean only using a soft
cloth and neutral cleaning agents.
NOTE: In cases of refrigerant leaks, such
as during installation, maintenance or repair
of machine, or even during normal use after
machine rest, there will be no refund by the
manufacturer.
CAUTION: Disconnect the power
supply before any maintenance.

Electrical Protection

The machine is equipped with a circuit breaker
to the side of the machine below the ON/OFF
switch. If the breaker trips, its button will pop
out. A tripped circuit breaker will cause the
machine to lose all power. Press the circuit
breaker button to reset. If the circuit breaker
does not reset or continues to trip, there is a
fault in the unit electrical system. Troubleshoot
and repair the affected component(s).

Tank Fill

This menu (available on Function menu) is
used to transfer refrigerant from a source tank
to the ISV.
1. Call up the Main Menu.
2. Select NEXT icon.
3. Select MENU icon.
4. Select TANK FILL from the Functions
Menu. The machine displays:
FILL AMOUNT: xx.xxyy
RECOVER CAPACITY: xx.xxyy
CHARGE CAPACITY: xx.xxyy
5. Enter the fill amount (at least 5 kg) to ensure
enough liquid refrigerant is available for
charging and select OK icon. Unit is set
with 2.2 kg dead space (first 2.2 kg are not
shown on display anymore). If the source
tank is empty, or has insufficient refrigerant
for transfer, tank fill will stop.
6. Connect the low pressure service hose
(blue) to the liquid connector on a full source
tank.
7. Position the source tank in such a way
that liquid refrigerant is supplied to the
connection. Open the source tank valve.
SP00D00609 2018-03-26
ACS 753, ACS 763, ACS 863 Service Manual
8. Select OK icon to start the tank fill process.
9. The machine (ACS 863 only) checks the
refrigerant in the source tank to verify it
is R1234yf and not contaminated. The
machine displays the following screens:
INITIALIZING REFRIGERANT IDENTIFIER
ANALYZING REFRIGERANT SAMPLE
REFRIGERANT PURITY PASSED
10. The machine begins filling the internal
storage vessel (ISV) and automatically
stops when the preset tank fill level is
reached. To stop the tank fill before the
preset level is reached, select PAUSE icon.
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Figure 1-3. Contaminant recovery outlet port
11. Close the liquid valve and remove the hose
from the source tank.
12. Select OK icon to return to the Function
Menu.
Operating Tips (ACS 863 only)
1. If the machine displays
REPLACE IDENTIFIER FILTER
• the refrigerant identifier filter must be
replaced. Select OK icon to confirm, and
refer to the Refrigerant Identifier chapter
of this manual for instructions.
2. If the machine displays
REFRIGERANT PURITY FAILED
RECOVER CONTAMINATED
REFRIGERANT FROM SYSTEM AND HOSES
• the refrigerant in the source tank is either
not R1234yf or it is contaminated. In either
case, it should not be added to the internal
storage vessel in the machine. The refrig-
erant purity is 95%.
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Robert Bosch GmbH